CN106346587A - Method for producing cabinet board with anti-insect and anti-mold composite urea-formaldehyde resin - Google Patents

Method for producing cabinet board with anti-insect and anti-mold composite urea-formaldehyde resin Download PDF

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Publication number
CN106346587A
CN106346587A CN201610752568.8A CN201610752568A CN106346587A CN 106346587 A CN106346587 A CN 106346587A CN 201610752568 A CN201610752568 A CN 201610752568A CN 106346587 A CN106346587 A CN 106346587A
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China
Prior art keywords
proof
vermins
formaldehyde resin
veneer
wood shavings
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CN201610752568.8A
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Chinese (zh)
Inventor
王飞虎
胡海强
唐贤明
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Nanning Chuang Chuang Plywood Co Ltd
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Nanning Chuang Chuang Plywood Co Ltd
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Priority to CN201610752568.8A priority Critical patent/CN106346587A/en
Publication of CN106346587A publication Critical patent/CN106346587A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/18—Manufacture or reconditioning of specific semi-finished or finished articles of furniture or of doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/16—Transporting the material from mat moulding stations to presses; Apparatus specially adapted for transporting the material or component parts therefor, e.g. cauls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention relates to a home building material, especially a method for producing cabinet board with anti-insect and anti-mold composite urea-formaldehyde resin. The cabinet board comprises from top to bottom: decorative paper, cunninghamia lanceolata veneer, particleboard and backboard; besides, the cabinet board is surrounded by aluminum alloy trim. The contact surface between the cunninghamia lanceolata veneer and particle board is coated with anti-insect and anti-mold composite urea-formaldehyde resin adhesives, which are also applied to the contact surface between the particleboard and backboard as well as the particleboard in the cabinet board. The cabinet board manufactured according to the invention has strong water resistance, high bonding strength, littleformaldehyde residue as well as anti-insect and anti-mold functions. Raw materials used for production of the particleboard in the cabinet board are the waste and scrap materials which cannot be used for production of the multi-layer eucalyptus board after peeling the eucalyptus wood, and the home building material utilizes the scraps to save wood and reduce productioncosts of the enterprises.

Description

The method that cupboard board is produced using Vermins-proof mildew-proof composite urea formaldehyde resin
Technical field
The present invention relates to a kind of household building materials, more particularly, to one kind produce cupboard board using Vermins-proof mildew-proof composite urea formaldehyde resin Method.
Background technology
As the saying goes " the ratio hall thoroughly, richness is than kitchen ".And cupboard board is even more as " apt word added to clinch the point " people that kitchen is fitted up and closes It is marked with and add.Cupboard board in the market is also adopted by particieboard as central layer, and particieboard is an important board kind in wood-based plate, Compared with other plate kinds, its investment of production is relatively fewer, energy consumption is little, low cost, and the requirement to raw materials quality is not also high, and three remain Thing, fast growing wood, recovery waste and old wood and some non-wooden materials can serve as the raw material of particieboard, therefore deficient in timber resources Weary Chinese development particieboard industry has its unique advantage.For intersecting the graininess of structure straggly, each portion side inside particieboard To performance essentially identical, horizontal bearing capacity is good；Surface of chipboard is smooth, and texture is true to nature, and uniformly, thickness error is little, resistance to for unit weight Pollution, ageing-resistant, attractive in appearance, various veneers can be carried out；In process of production, glue consumption is less for particieboard, and environmental protection coefficient is relatively High.Because particieboard volume is larger, use its Hepplewhite, for other sheet materials, also heavier.Because particieboard just like This is many a little, therefore it is widely used in the inside fitting of Furniture manufacture, building, packaging, vehicle and ship and household electrical appliance Housing making etc., also can make facing particieboard through secondary operations.But because particieboard is wooden product, rainy day such as Fruit keeps ventilation not in time it is easy to deform because of air humidity, or even has that mouldy, the situation such as addle, and leads to indoor stale Taste is serious, and particieboard majority is to be formed by adhesive bonding by Eucalyptus monolithic, can be because producing expansive force after long-time moisture absorption Difference and make bow warping deform.Therefore, improve the Vermins-proof mildew-proof performance of Lauxite, reduce residual formaldehyde, improve weather-proof Performance, becomes the primary problem solving of particieboard industry development.Particieboard is applied in cupboard board the present invention, bears a heavy burden and raw material Cheaply, Financial cost is cheap, and the cupboard board of the present invention also has the performance of low aldehyde and Vermins-proof mildew-proof.
Retrieve the patent below in relation to cupboard board aspect:
Chinese patent, application number: 201510143432.2；Applicant: Guangxi Binyang County Rong Liang new material Science and Technology Ltd.；Send out Bright title: a kind of cupboard board and its manufacture method；Summary: the present invention relates to a kind of household building materials, more particularly, to a kind of cupboard board And its manufacture method.A kind of its structure of cupboard board includes from top to bottom successively: facing paper, moist-proof board, particieboard；Surrounding aluminum Alloy fringing；Fire-retardant low formaldehyde emission uf resin adhesive is coated, the particieboard in cupboard board is also adopted by this between moist-proof board, particieboard Adhesive.The cupboard board of manufacture of the present invention possess high bonding strength, burst size of methanal low while, also have fire resistance and Environmental-protecting performance.The raw material major part that the present invention adopts is the remaining waste material of timber, low price, and Financial cost is low, belongs to regeneration The recycling of resource.
In above-mentioned patent, the adhesive adopting in cupboard board production process is water-repellent modified urea-formaldehyde resin adhesive (its Purpose is to reduce content of formaldehyde) modified urea-formaldehyde resin adhesive, and add polyvinyl acetate emulsion, what it reached is waterproof Moisture effect, not Vermins-proof mildew-proof effect.
Content of the invention
It is an object of the present invention to provide a kind of method that employing Vermins-proof mildew-proof composite urea formaldehyde resin produces cupboard board, principal character It is that particieboard is produced for raw material hot pressing using unavailable waste material in fast-growing eucalyptus plate production process, and in this particieboard Surface and bottom surface paste Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and Eucalyptus veneer respectively, and facing paper is sticked on the top layer then at Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, prepared cupboard board, And the surrounding in cupboard board tumbles in aluminium alloy side, pasting and prepare the glue that particieboard is related to is that Vermins-proof mildew-proof is combined ureaformaldehyde tree Fat, so resistance to water is strong, adhesion strength is high, residual formaldehyde amount is low possessing to be prepared by the method for the present invention the cupboard board obtaining Meanwhile, also there is Vermins-proof mildew-proof function.
The technical scheme is that and be achieved in that:
The method producing cupboard board using Vermins-proof mildew-proof composite urea formaldehyde resin, this cupboard board structure from top to bottom is followed successively by: dress Decorations paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, backboard；The surrounding of cupboard board aluminium alloy fringing；Coat anti-between Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and particieboard Worm mould proof composite urea formaldehyde resin adhesive, coats Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, cabinet between particieboard and backboard Particieboard in plate is also adopted by Vermins-proof mildew-proof composite urea formaldehyde resin adhesive；Concrete steps include: the preparation of particieboard, Lignum seu Ramulus Cunninghamiae Lanceolatae list Gluing pastes particieboard, decoration process respectively for plate and backboard.
The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is delivered in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are combined Urea-formaldehyde resin adhesive, under being sufficiently stirred for of watch core layer glue mixer, reaches the uniform effect mixing abundant applying glue, wood shavings particle Account for the 85-90% of sheet material dry weight, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.8～0.9mpa, time 5～8min；Finally carry out heat Pressure, hot pressing pressure 2.5～3mpa, temperature is 200～210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to Quenched, prepared particieboard in balance storehouse.
Described additive is any one in titanium dioxide, Pulvis Talci and white carbon.
Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: will be dried and moisture content is little In or be equal to 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard coat Vermins-proof mildew-proof composite urea formaldehyde resin adhesive respectively, single spreading amount is 200～230g/m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press and carry out hot-forming, hot pressing pressure Power is 2.5～3.0mpa, and hot pressing temperature is 130～135 DEG C, and hot pressing time is 10～15min；Described backboard is Eucalyptus list Plate.
The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, uses hot blast by multilamellar wood single-plate stoving rack Stove dries up and is less than or equal to 10% to the moisture content of veneer.
Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stacking hinges It is connected on support, the upper and lower surface of spacing reticulum is fitted with spacing net, spacing reticulum bottom is provided with cushion block, cushion block will be up and down Two spacing reticulums separate, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
Described decoration process is: facing paper is soaked in melamine solution, then is covered on Chinese fir board through hot pressing Top layer, obtain slab, slab carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, last cupboard board Surrounding aluminium alloy fringing, is obtained the cupboard board with Vermins-proof mildew-proof performance.
Described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, is made up of the raw material of following parts by weight:
50～100 parts of cyanurotriamide modified urea resin；
20～30 parts of Oxytarch；
1～3 part of polyvinyl alcohol；
3～8 parts of hydrogenated rosin；
2～3 parts of propanediol polyoxypropylene polyvinylether；
4～6 parts of polyisocyanate；
0.5～5 part of isobutyl triethoxy silane；
5～10 parts of phenolate lignin；
100～200 parts of clear water；
2.1～4.9 parts of Vermins-proof mildew-proof agent.
Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1.
300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.Activated carbon powder and the ratio of bamboo charcoal powder Surface area is big, has superpower moisture effect, with the moisture in absorption air, it is to avoid timber main body has that mouldy, the situation such as addle. Main component garlicin in Bulbus Allii have sterilization, parasite killing, removing toxic substances, anti-corrosion the effects such as；And the main component capsaicin in Fructus Capsici To the action of contace poison of insect substantially, after insect contact with capsaicin i.e. performance benumb (inertia, do not take food), paralyse finally dead The phenomenon died.Activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are added to composite urea formaldehyde resin of the present invention as Vermins-proof mildew-proof agent In adhesive, vermins-proof effect persistently, does not affect the bonding strength of adhesive, is uniformly dispersed in adhesive, can be with glue to wood Material internal penetration, make product reach long-acting insect protected function it is often more important that, all safe and efficient low toxicity of this several material, have Certain antiseptic property.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat arrives 80-100 DEG C, and the hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene that are subsequently adding parts by weight gather Vinyl Ether, stirs 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add The cyanurotriamide modified urea resin of parts by weight, Oxytarch and Vermins-proof mildew-proof agent, keep 80-90 DEG C of stirring reaction 2-5 little When, 10-20 minute adds the polyisocyanate of parts by weight before use, and mixing and stirring can use.
Cyanurotriamide modified urea resin of the present invention adopts Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd. to study Cyanurotriamide modified urea resin, number of patent application: cn 201310353442.x；The applying date: 2013.08.14；Open (public Accuse) number: cn 103408711a；Application (patent right) people: Guangxi Nanning Green Park Beilin Wood Industry Co., Ltd., this tripolycyanamide changes Property Lauxite primary raw material be formaldehyde, tripolycyanamide and carbamide, add formaldehyde using disposable, add several times carbamide and The method of tripolycyanamide, controls reaction rate, it is to avoid the generation of gelatin phenomenon, promotes the reaction completely of formaldehyde.Repeatedly add urine Element, the carbamide adding every time is all different with the polymerization rate of formaldehyde and condition, after being divided into prepolymerization, polymerization and polymerization Phase three phases, the amount of each stage addition carbamide is different, and reaction temperature is also different, by this technique, it is to avoid The generation of polymerization process gelatin phenomenon, the Lauxite narrow molecular weight distribution of gained, residual formaldehyde is low, artificial for producing Plate, it is possible to decrease the burst size of methanal of wood-based plate.
Above-described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, the function of each raw material is as follows:
Cyanurotriamide modified urea resin, is adhesive major ingredient.Urea-formaldehyde resin adhesive is a kind of thermosetting polymer adhesive. Due to its process is simple, raw material is cheap, and adhesive strength is high, the advantages of water white transparency, be widely used in plywood, particieboard, The industries such as medium density fibre board (MDF), the production of artificial board and interior decoration, can buy in Market of Adhesives.Band ring molecule Tripolycyanamide be introduced in Lauxite, formed tridimensional network, enclose many hydrophilic groups, change resin matrix knot Structure, promotes resin crosslinks, thus having reached the purpose of the adhesion strength, resistance to water and ageing resistance improving resin, again simultaneously Avoid the relatively costly shortcoming of simple melamine resin.
Oxytarch is that starch is acted on oxidant in acid, alkali, neutral medium, makes a kind of obtained from starch oxidation change Property starch.Oxytarch product colour is pure white, pastes transparent, good film-forming property, and freeze-thaw resistance is good, is the thickening of low viscosity high concentration Agent, is widely used in weaving, papermaking, food and Fine Chemical.Oxytarch carries more aldehyde radical and carboxyl, can be multiple During closing Lauxite polymer reaction, generate acetal and hemiacetal structure, thus improving the ageing-resistant performance of Lauxite； Simultaneous oxidation starch can be combined with the free formaldehyde in cyanurotriamide modified urea resin, can reduce free formaldehyde content；Oxidation On the other hand starch, can reduce cyanurotriamide modified urea resin addition as viscosity complexing agent again, reduce and produce Cost.
Polyvinyl alcohol, is toughener so that the cupboard board intensity produced increases.
Hydrogenated rosin, is antioxidant so that the cupboard board produced does not allow perishable, prolongation life-span, anti-aging.
Propanediol polyoxypropylene polyvinylether, is defoamer, prevents adhesive from having bubble cavity to produce during using.
Polyisocyanate is firming agent, is characterized in thering is very high wearability, and stable chemical nature, and intensity is high, The crosslinked action itself having, can improve heat-resisting, water, the plasticizer of adhesive and the performance of solvent.
Bridging agent, from isobutyl triethoxy silane, its one end can be combined with Lauxite carbonyl, and the other end can be with The hydroxy combining of starch, strengthens its plank intensity.
Lignin molecular mass after phenolate reaction reduces, and increases reaction active groups, can eliminate part free formaldehyde. The preparation method of phenolate lignin is: will be placed in separation container using the black liquid of alkaline boiling method slurrying, is removed with screen cloth Undissolved float, settles 4 hours after stirring, discharge lower floor silt, takes upper strata to contain the black liquor vacuum drying of alkali lignin Machine carries out vacuum spray drying process, obtains powdery alkali lignin；Take powdery alkali lignin to put in acidifier, add 70wt% sulphuric acid, after stirring, is warming up to 140-160 DEG C, sulfonating reaction 1-2 hour；Through standard vertical-tubes evaporation Device, circulation rate is 0.4m/s-0.5m/s, and control discharging moisture is 30wt%, precipitation, through filtering, being dried to water content For 15wt%；By lignin: phenol weight than for 1:1 add phenol, control temperature 85-95 DEG C, insulation reaction 1 hour, Finally adjust ph to 6.5-7.0 with 30wt% sodium hydroxide and obtain final product phenolate lignin.
Bulbus Allii, [Classification system] allium sativum l., [another name] Bulbus Allii, Bulbus Allii, DUSUAN, giant garlic.[function cures mainly] Removing toxic substances parasite killing, reducing swelling and alleviating pain, antidiarrheal dysentery relieving, control lung, anthelmintic, in addition with warming the spleen warming the stomach.Control swollen ulcer drug, white bald tinea skin ulcer, dysentery Disease is had loose bowels, pulmonary tuberculosis pertussis, ascarid pinworm, eating accumulation, coldness and pain in the epigastrium, oedema turgor.The complete intracellular presence of Bulbus Allii is a kind of Colourless, odorless and water miscible spice precursor alliin, are contacted with a kind of allinase after cell damage, are transformed into sulfur-bearing Product garlicin.Garlicin has strong antibacterial and anti-inflammation functions, all has suppression to multiple coccuses, bacillus, funguses and virus etc. System and killing action, are antibacterial action one kind the strongest in the current natural plants finding.In addition, garlicin is in cultivation aquaculture In have been developed that utilization, in feedstuff, garlicin can be used as antibacterial, agrochemical.Garlicin has sterilization, parasite killing, removing toxic substances, prevents Rotten the effects such as.
Fructus Capsici, [Classification system] capsicum annuum, [another name] spicy, caynne pepper, Capsicum frutescens L．Var．1o m Bail, Red sea green pepper, capsicum annum fasciculatum； Capsaicin is that it is a kind of pungent Rhizoma et radix valerianae amide alkaloid of extreme mainly in peppery material in pepper fruit, its chemistry knot Structure is entitled: [(4- hydroxy 3-methoxybenzene base)-methyl] -8- methyl-(anti-) -6- nonenamide.Capsaicin is to waxy brood cell Bacillus and bacillus subtilis significantly inhibit effect, but invalid to staphylococcus aureuses and escherichia coli.Its branch, leaf have no antibacterial Tubercule bacillus are only had very slight suppression by effect.10-20% Fructus Capsici decocts chaste tree to be had functions that to kill Cimex bedbug.Capsaicin is to insect Action of contace poison substantially, insect contact with capsaicin after i.e. performance paralysis (inertia, do not take food), the showing of finally death of paralysing As；It also has stomach poison function to insect, after pests, then suppresses Chlorogenic Acid, impact is digested and assimilated, disturbed breathing generation Thank, cause insect to be led to physiology pathological changes because normal physiological activity is obstructed, so that growth promoter is suppressed and dead.
The preparation of described Oxytarch:
(1), select glass apparatus and assemble synthesizer:
Jj600 electronic balance；Digital display thermostat water bath；Digital display constant speed stirrer；There-necked flask；Electric heating constant-temperature blowing drying box； Ndj-79 Rotary Viscosimeter.
(2) reagent chemicals:
Raw material: tapioca (moisture 13.8%)；
Reagent: hydrogen peroxide (30%), Copper hydrate, copper sulfate, sodium sulfite (being ar).
(3) preparation principle:
Starch oxidant effect under, the hydroxyl on glucose unit oxidable become carboxyl (- cooh), it makes binding agent Stability be improved significantly.Oxidation decreases the quantity of hydroxyl in starch molecule, so that molecular association is obstructed, thus subtracting The weak binding ability of intermolecular hydrogen chain.Meanwhile, glucosides chain break, makes macromolecules degradation, and starch molecule amount reduces, thus increasing Dissolubility, mobility and caking property are added.In the presence of liquid caustic soda, with not oxidized hydroxy combining in starch, destroy part hydrogen Key, makes declines between macromole, thus easily swelling gelatinizing, give its caking property.
Preparation process is as follows:
Weigh 200g tapioca in 1000ml there-necked flask, add water and be tuned into the starch milk of 18～21 ° of b é, stir, slowly The sodium hydroxide solution of slow a certain amount of 5%～7% concentration of Deca.After water-bath rises to design temperature, add 0.01% copper sulfate.So After add a certain amount of hydrogen peroxide, after isothermal reaction certain time, add 0.4g sodium sulfite, stir 10min terminating reaction. After reaction terminates, it is 5.5～6.0 with dilute hydrochloric acid neutralization reaction liquid ph value.Sucking filtration is dehydrated, washes clean, places 40-50 in baking oven Dry at DEG C, pulverize, screening obtains final product product.The Oxytarch of above-mentioned use can be produced with jumbo reactor.
Compared with prior art, the positive effect of the present invention is:
1st, adopt unavailable waste material during rotary-cut Eucalyptus plate multilamellar Eucalyptus plate --- i.e. the leftover pieces hot pressing life of Eucalyptus Produce particieboard, because Eucalyptus is a kind of fast growing wood, after felling, be peeled into plate, after being dried, with adhesive, plate be bonded into this again Kind of multi-layer sheet is also referred to as solid wood board, can as the multiple use of the office appliance of high-quality, timber floor, furniture and building-supporting plate, but It is that multiple-plate production process produces in a large number either in cut-out, rotary-cut or adhesion process, all can produce many particles, these are many Laminate factory, particle is burnt only as fuel, causes the great wasting of resources, and leftover pieces are used by the present invention, Be a kind of make full use of resource, save timber direction.
2nd, the present invention adopts cyanurotriamide modified urea resin as adhesive master according to the characteristic of Eucalyptus plate, Chinese fir board Material, has process is simple, and raw material is cheap, and adhesive strength is high, the advantages of water white transparency, and the release of low formaldehyde gases, it is a kind of Environmental type resin, can improve the resistance to water (thus increasing the waterproof and dampproof performance of cupboard board) of Lauxite, and prevent glue Layer shrinks and reduces internal stress, improves ageing-resistant performance, increases glue solid content, viscosity and tack, extends working life.And adopt hydrogen Changing Colophonium is antioxidant so that the cupboard board produced does not allow perishable, prolongation life-span, anti-aging；Using polyvinyl alcohol For toughener so that the cupboard board intensity produced increases；Using propanediol polyoxypropylene polyvinylether, it is defoamer, prevent Only adhesive has bubble cavity to produce during using；It is firming agent using polyisocyanate；From isobutyl ethyl triethoxy silicane Alkane can be combined with Lauxite carbonyl as bridging agent, its one end, and the other end can strengthen its plank strong with the hydroxy combining of starch Degree；Contain a large amount of active groups in phenolate lignin, as formaldehyde catching agent, part free formaldehyde can be eliminated；Using oxidation Starch, as viscosity complexing agent, can reduce cyanurotriamide modified urea resin addition, cost-effective；Activated carbon powder, bamboo charcoal Powder, Bulbus Allii powder and Fructus Capsici powder are added in composite urea formaldehyde resin adhesive of the present invention as Vermins-proof mildew-proof agent, and vermins-proof effect is lasting, Do not affect the bonding strength of adhesive, be uniformly dispersed in adhesive, can permeate to wood internal with glue, make product reach length The function of effect insect protected.
3rd, the present invention adopts Vermins-proof mildew-proof composite urea formaldehyde resin to produce in the method for cupboard board, its Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard Veneer drying is a spotlight, is characterized in that Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted multilamellar wood single-plate dries Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, is dried up to both not with air stove by frame The moisture content of identical veneer is less than or equal to 10%；Understand from description, be not during Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and Eucalyptus veneer drying Applying external force in sheet material, simply as thermal source, veneer being simply dried with air stove, exactly because and employing so Drying mode, solve current plank processing enterprise and contraction, plate be easily deformed using the sheet material that drying machine dried single board exists Material out-of-flatness and the problem of easy warping and cracking.
4th, the rail mounted multilamellar wood single-plate stoving rack that the present invention adopts, including support and spacing reticulum, multiple spacing nets Seat stacking is hinged on support, and frame bottom is provided with pulley；The upper and lower surface of spacing reticulum is fitted with spacing net, spacing net Seat bottom cushion block is installed, upper and lower two spacing reticulums are separated by cushion block, wood single-plate be placed on upper and lower two spacing reticulums it Between, spacing net is only spacing to wood single-plate, will not extrude wood single-plate, hot blast passes through between spacing net and spacing net, to wood Material veneer is heated so that wood single-plate will not produce flexural deformation.Rail mounted multilamellar wood single-plate using the present invention dries Quarrel more than 30 yuan of the low cost cost of one cubic metre wood single-plate being dried than one cubic metre of wood single-plate of drum-type drying, greatly The drying cost of the big wood single-plate reducing.
5th, in the present invention, finally additionally use aluminium alloy fringing in cupboard board it is therefore an objective to increase overall aesthetic property Meanwhile, also there is the effect of fixing cupboard board, further increase the waterproof and dampproof performance of cupboard board.
6th, in the present invention, activated carbon powder and the fine and closely woven porous of bamboo charcoal powder, has superpower moisture protection, in energy absorption air Moisture, it is to avoid timber main body has that mouldy, the phenomenon such as addle；Also have and decompose the function that abnormal flavour removes U.S. sterilization, if absorbing wood The harmful gass such as formaldehyde, benzene, dimethylbenzene, hydrogen in matter product.Main component garlicin in Bulbus Allii has sterilization, parasite killing, solution Malicious, anti-corrosion the effects such as；And the main component capsaicin in Fructus Capsici is obvious to the action of contace poison of insect, after insect is contacted with capsaicin The i.e. finally dead phenomenon of performance paralysis (inertia, do not take food), paralysis.Activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder It is added in composite urea formaldehyde resin adhesive of the present invention as Vermins-proof mildew-proof agent, vermins-proof effect persistently, does not affect the glue of adhesive Close intensity, be uniformly dispersed in adhesive, can permeate to wood internal with glue, make product reach the function of long-acting insect protected, more Importantly, all safe and efficient low toxicity of this several material, there is certain antiseptic property.
7th, in the present invention, the active component in Vermins-proof mildew-proof agent can be by glue scattering and permeating to veneer fibrous tissue In, multiple aspergillosis, Trichoderma spp. and the penicillium sp producing inside wood-based plate can not only be prevented, and can quickly eliminate veneer inside because a large amount of The active polypide that produced using filler and carry out thalline interference so as to cannot hatch without the worm's ovum of hatching in veneer.This The Vermins-proof mildew-proof agent of invention belongs to the strong osmosis type of interior suction, has stronger suppression to make growing of the aspergillosis of wood-based plate, Trichoderma spp. and penicillium sp With moth-eaten to Chinese powder, Japanese powder is moth-eaten, and power and long-acting preventive effect are knocked down in the killing that armful flat powder moth has moment.
Specific embodiment
Embodiment 1
The method producing cupboard board using Vermins-proof mildew-proof composite urea formaldehyde resin, this cupboard board structure from top to bottom is followed successively by: dress Decorations paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, backboard；The surrounding of cupboard board aluminium alloy fringing；Coat anti-between Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and particieboard Worm mould proof composite urea formaldehyde resin adhesive, coats Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, cabinet between particieboard and backboard Particieboard in plate is also adopted by Vermins-proof mildew-proof composite urea formaldehyde resin adhesive；Concrete steps include: the preparation of particieboard, Lignum seu Ramulus Cunninghamiae Lanceolatae list Gluing pastes particieboard, decoration process respectively for plate and backboard.
The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is delivered in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are combined Urea-formaldehyde resin adhesive, under being sufficiently stirred for of watch core layer glue mixer, reaches the uniform effect mixing abundant applying glue, wood shavings particle Account for the 85-90% of sheet material dry weight, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.8mpa, time 8min；Finally carry out hot pressing, hot pressing pressure Power 2.5mpa, temperature is 200 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, is obtained Particieboard.
Described additive is titanium dioxide.
Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: will be dried and moisture content is little In or be equal to 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard coat Vermins-proof mildew-proof composite urea formaldehyde resin adhesive respectively, single spreading amount is 200g/m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press and carry out hot-forming, hot pressing pressure is 2.5mpa, hot pressing temperature is 130 DEG C, and hot pressing time is 15min；Described backboard is Eucalyptus veneer.
The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, uses hot blast by multilamellar wood single-plate stoving rack Stove dries up and is less than or equal to 10% to the moisture content of veneer.
Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stacking hinges It is connected on support, the upper and lower surface of spacing reticulum is fitted with spacing net, spacing reticulum bottom is provided with cushion block, cushion block will be up and down Two spacing reticulums separate, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
Described decoration process is: facing paper is soaked in melamine solution, then is covered on Chinese fir board through hot pressing Top layer, obtain slab, slab carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, last cupboard board Surrounding aluminium alloy fringing, is obtained the cupboard board with Vermins-proof mildew-proof performance.
Described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, is made up of the raw material of following parts by weight:
50 parts of cyanurotriamide modified urea resin；
20 parts of Oxytarch；
1 part of polyvinyl alcohol；
3 parts of hydrogenated rosin；
2 parts of propanediol polyoxypropylene polyvinylether；
4 parts of polyisocyanate；
0.5 part of isobutyl triethoxy silane；
5 parts of phenolate lignin；
100 parts of clear water；
2.1 parts of Vermins-proof mildew-proof agent.
Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein activated carbon powder 0.6 weight portion, bamboo charcoal powder 0.9 weight portion, Bulbus Allii powder and Fructus Capsici powder are 0.3 weight Part.300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 80 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 80 DEG C of stirring reactions 5 Hour, the polyisocyanate adding parts by weight in 20 minutes before use, mixing and stirring can use.
Embodiment 2
The method producing cupboard board using Vermins-proof mildew-proof composite urea formaldehyde resin, this cupboard board structure from top to bottom is followed successively by: dress Decorations paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, backboard；The surrounding of cupboard board aluminium alloy fringing；Coat anti-between Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and particieboard Worm mould proof composite urea formaldehyde resin adhesive, coats Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, cabinet between particieboard and backboard Particieboard in plate is also adopted by Vermins-proof mildew-proof composite urea formaldehyde resin adhesive；Concrete steps include: the preparation of particieboard, Lignum seu Ramulus Cunninghamiae Lanceolatae list Gluing pastes particieboard, decoration process respectively for plate and backboard.
The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is delivered in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are combined Urea-formaldehyde resin adhesive, under being sufficiently stirred for of watch core layer glue mixer, reaches the uniform effect mixing abundant applying glue, wood shavings particle Account for the 85-90% of sheet material dry weight, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.8mpa, time 7min；Finally carry out hot pressing, hot pressing pressure Power 2.8mpa, temperature is 205 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, is obtained Particieboard.
Described additive is Pulvis Talci.
Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: will be dried and moisture content is little In or be equal to 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard coat Vermins-proof mildew-proof composite urea formaldehyde resin adhesive respectively, single spreading amount is 220g/m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press and carry out hot-forming, hot pressing pressure is 2.8mpa, hot pressing temperature is 133 DEG C, and hot pressing time is 13min；Described backboard is Eucalyptus veneer.
The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, uses hot blast by multilamellar wood single-plate stoving rack Stove dries up and is less than or equal to 10% to the moisture content of veneer.
Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stacking hinges It is connected on support, the upper and lower surface of spacing reticulum is fitted with spacing net, spacing reticulum bottom is provided with cushion block, cushion block will be up and down Two spacing reticulums separate, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
Described decoration process is: facing paper is soaked in melamine solution, then is covered on Chinese fir board through hot pressing Top layer, obtain slab, slab carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, last cupboard board Surrounding aluminium alloy fringing, is obtained the cupboard board with Vermins-proof mildew-proof performance.
Described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, is made up of the raw material of following parts by weight:
80 parts of cyanurotriamide modified urea resin；
25 parts of Oxytarch；
2 parts of polyvinyl alcohol；
6 parts of hydrogenated rosin；
2.5 parts of propanediol polyoxypropylene polyvinylether；
5 parts of polyisocyanate；
3 parts of isobutyl triethoxy silane；
8 parts of phenolate lignin；
150 parts of clear water；
3.5 parts of Vermins-proof mildew-proof agent.
Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein 1 part of activated carbon powder, 1.5 parts of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder are 0.5 part.Described activated carbon 300 mesh sieves all crossed by powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 90 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 20 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 85 DEG C of stirring reactions 4 Hour, the polyisocyanate adding parts by weight in 15 minutes before use, mixing and stirring can use.
Embodiment 3
The method producing cupboard board using Vermins-proof mildew-proof composite urea formaldehyde resin, this cupboard board structure from top to bottom is followed successively by: dress Decorations paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, backboard；The surrounding of cupboard board aluminium alloy fringing；Coat anti-between Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and particieboard Worm mould proof composite urea formaldehyde resin adhesive, coats Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, cabinet between particieboard and backboard Particieboard in plate is also adopted by Vermins-proof mildew-proof composite urea formaldehyde resin adhesive；Concrete steps include: the preparation of particieboard, Lignum seu Ramulus Cunninghamiae Lanceolatae list Gluing pastes particieboard, decoration process respectively for plate and backboard.
The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is delivered in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are combined Urea-formaldehyde resin adhesive, under being sufficiently stirred for of watch core layer glue mixer, reaches the uniform effect mixing abundant applying glue, wood shavings particle Account for the 85-90% of sheet material dry weight, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.9mpa, time 5min；Finally carry out hot pressing, hot pressing pressure Power 3mpa, temperature is 210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, plane is obtained Card.
Described additive is white carbon.
Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: will be dried and moisture content is little In or be equal to 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard coat Vermins-proof mildew-proof composite urea formaldehyde resin adhesive respectively, single spreading amount is 230g/m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press and carry out hot-forming, hot pressing pressure is 3.0mpa, hot pressing temperature is 135 DEG C, and hot pressing time is 10min；Described backboard is Eucalyptus veneer.
The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, uses hot blast by multilamellar wood single-plate stoving rack Stove dries up and is less than or equal to 10% to the moisture content of veneer.
Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stacking hinges It is connected on support, the upper and lower surface of spacing reticulum is fitted with spacing net, spacing reticulum bottom is provided with cushion block, cushion block will be up and down Two spacing reticulums separate, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
Described decoration process is: facing paper is soaked in melamine solution, then is covered on Chinese fir board through hot pressing Top layer, obtain slab, slab carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, last cupboard board Surrounding aluminium alloy fringing, is obtained the cupboard board with Vermins-proof mildew-proof performance.
Described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, is made up of the raw material of following parts by weight:
100 parts of cyanurotriamide modified urea resin；
30 parts of Oxytarch；
3 parts of polyvinyl alcohol；
8 parts of hydrogenated rosin；
3 parts of propanediol polyoxypropylene polyvinylether；
6 parts of polyisocyanate；
5 parts of isobutyl triethoxy silane；
10 parts of phenolate lignin；
200 parts of clear water；
4.9 parts of Vermins-proof mildew-proof agent.
Described Vermins-proof mildew-proof agent be activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, its part by weight according to Secondary for 2:3:1:1, wherein activated carbon powder 1.4 weight portion, bamboo charcoal powder 2.1 weight portion, Bulbus Allii powder and Fructus Capsici powder are 0.7 weight Part.300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder.
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, plus Heat, to 100 DEG C, is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 10 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add the three of parts by weight Poly cyanamid modified urea-formaldehyde resin, Oxytarch, activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, keep 90 DEG C of stirring reactions 2 Hour, 10-20 minute adds the polyisocyanate of parts by weight before use, and mixing and stirring can use.
Comparative example 3
The method producing cupboard board, this cupboard board structure from top to bottom is followed successively by: facing paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, the back of the body Plate；The surrounding of cupboard board aluminium alloy fringing；Between Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and particieboard, coating urea-formaldehyde resin adhesive is (gloomy viscous purchased from Zibo China Mixture company limited), coating urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen binding agent company limited), cabinet between particieboard and backboard Particieboard in plate is also adopted by urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen binding agent company limited)；Concrete steps include: particieboard Preparation, gluing pastes particieboard, decoration process respectively for Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard.
The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen binding agent company limited) required by technique is delivered in glue mixer by glue workshop section, wood shavings and Urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen binding agent company limited), under being sufficiently stirred for of watch core layer glue mixer, reaches uniform mixing The effect of abundant applying glue, wood shavings particle accounts for the 85-90% of sheet material dry weight, and urea-formaldehyde resin adhesive is (purchased from the limited public affairs of the gloomy binding agent of Zibo China Department) and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.9mpa, time 5min；Finally carry out hot pressing, hot pressing pressure Power 3mpa, temperature is 210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to quenched in balance storehouse, plane is obtained Card.
Described additive is white carbon.
Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: will be dried and moisture content is little In or be equal to 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and urea-formaldehyde resin adhesive (purchased from Zibo Hua Sen binding agent company limited) coated respectively by backboard, single Face glue-spread is 230g/m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press carry out hot-forming, Hot pressing pressure is 3.0mpa, and hot pressing temperature is 135 DEG C, and hot pressing time is 10min；Described backboard is Eucalyptus veneer.
The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space, uses hot blast by multilamellar wood single-plate stoving rack Stove dries up and is less than or equal to 10% to the moisture content of veneer.
Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stacking hinges It is connected on support, the upper and lower surface of spacing reticulum is fitted with spacing net, spacing reticulum bottom is provided with cushion block, cushion block will be up and down Two spacing reticulums separate, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
Described decoration process is: facing paper is soaked in melamine solution, then is covered on Chinese fir board through hot pressing Top layer, obtain slab, slab carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, last cupboard board Surrounding aluminium alloy fringing, prepared cupboard board.
According to gb/t15036.2-2001 " inspection of solid wooden floor board plate and test method " in embodiment and comparative example The burst size of methanal of products obtained therefrom and bonding strength are measured；Wood-based plate rise drum phenomenon mensure adopt water-boiling method, that is, Wood-based plate is cut out as 80cm(length) × 30cm(width) specification, first boil in 100 DEG C of water 3 hours, indeformable, do not ftracture, Dry at 60-70 DEG C again, record wood-based plate plays the time used by drum, the time is longer, illustrates that the quality of wood-based plate is better, normal condition Under use, it has been more difficult to rouse.Wood-based plate is cut out as 80cm(length) × 30cm(width) specification, put into the low-temperature test of 25 DEG C of constant temperature 1h is placed in room, lowers the temperature to afterwards low-temperature test room, near -10 DEG C in 2 minutes, keeps -10 DEG C of 30min, low temperature is surveyed afterwards Examination room is brought rapidly up checking the cracking situation of artificial flaggy and interlayer to 25 DEG C, and whether wood-based plate deforms, according to cracking Deformation draws the anti-freezing property of wood-based plate.It is 15 DEG C, in the environment of relative humidity >=85%, records it and go mouldy in temperature Time and mould varying index, additionally, the full Eucalyptus solid wooden compound floor being obtained is taken size identical sample sizes to put into respectively Culture has in the culture dish of equal number Coptotermes formosanus Shtrari., the survival number of Coptotermes formosanus Shtrari. calculate Coptotermes formosanus Shtrari. in detection culture dish after culture 24 hours Mortality rate.Each Product checking three times, data is averaged, and every testing result is as shown in the table:
Find out from upper table, during producing cupboard board by the method for the present invention, it can be seen from the table, the insect protected of the present invention is prevented The cupboard board that mould composite urea formaldehyde resin production cupboard board is prepared with respect to urea-formaldehyde resin adhesive has the advantages that prominent, main table Present: the present invention has preferable glue performance, have the advantages that Vermins-proof mildew-proof effect is good, to aspergillosis, Trichoderma spp. and penicillium sp simultaneously Grow and have stronger inhibitory action, power and long-acting preventive effect are knocked down in the killing having moment to plank powder moth, have relatively Good application and popularization value.
Veneer drying Application Example
1st, Nanning wood industry company, original use manually utilizes sun hanger plate, is affected by weather, shines plate efficiency pole Low；In order to allow wood single-plate drying not receive weather restriction, the said firm employs traditional drum-type wood single-plate drying device pair Wood single-plate is dried, drum-type wood single-plate drying device complex structure, and drive disk assembly is many, and maintenance efficiency is high, and power consumption is big, The veneer drying out is easily deformed contraction and warping and cracking；In order to overcome above-mentioned shortcoming, the said firm uses the list of the present invention Plate drying mode, process is simple, low cost of manufacture, the cost that one cubic metre wood single-plate is dried is than one cubic metre of drum-type drying More than 30 yuan of the low cost of wood single-plate, the drying cost of the wood single-plate substantially reducing, is outside not applying in its dry run Power, in sheet material, is simply simply dried to veneer as thermal source with air stove, exactly because and employing such drying Mode, solves current plank processing enterprise and is easily deformed contraction, sheet material injustice using the sheet material that drying machine dried single board exists The problem of whole and easy warping and cracking.

Claims (8)

1. adopt Vermins-proof mildew-proof composite urea formaldehyde resin produce cupboard board method it is characterised in that: this cupboard board is from top to bottom Structure is followed successively by: facing paper, Lignum seu Ramulus Cunninghamiae Lanceolatae veneer, particieboard, backboard；The surrounding of cupboard board aluminium alloy fringing；Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and plane Vermins-proof mildew-proof composite urea formaldehyde resin adhesive is coated, between particieboard and backboard, coating Vermins-proof mildew-proof is combined ureaformaldehyde tree between card Fat adhesive, the particieboard in cupboard board is also adopted by Vermins-proof mildew-proof composite urea formaldehyde resin adhesive；Concrete steps include: particieboard Preparation, gluing pastes particieboard, decoration process respectively for Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard.
2. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 1 produce cupboard board method it is characterised in that: The preparation process of described particieboard is:
1) unavailable waste material during multilamellar Eucalyptus plate processed after rotary-cut Eucalyptus plate is sent with transporter after simple screening Carry out wood shavings in chipper, then deliver in wet wood shavings feed bin through transporter and carry out transition storage；The water content percentage of wet wood shavings Weight should be maintained at less than 20%；
2) wet wood shavings are delivered in roller drier through transporter and are dried, and the water content percent by weight making wood shavings is below 10%；
3) by dried wood shavings with isolating veneer；Separate metal and sandstone；
4) pass through screening through dry wood shavings and sort, the dry wood shavings of watch core layer below 2 centimetres for the length are sent through transporter Toward the storage of watch core layer dry wood shavings material transitional storehouse, the wood shavings more than 2 centimetres are sent to watch core layer dry wood shavings material mistake after smashing again Cross storage to deposit；
5) the qualified dry wood shavings of watch core layer transport through transporter, deliver in glue mixer, adjust simultaneously and mix after the metering of chip metering feed bin Vermins-proof mildew-proof composite urea formaldehyde resin adhesive required by technique is delivered in glue mixer by glue workshop section, and wood shavings and Vermins-proof mildew-proof are combined Urea-formaldehyde resin adhesive, under being sufficiently stirred for of watch core layer glue mixer, reaches the uniform effect mixing abundant applying glue, wood shavings particle Account for the 85-90% of sheet material dry weight, Vermins-proof mildew-proof composite urea formaldehyde resin adhesive and additive account for 10-15%；
6) wood shavings after applying glue deliver to mechanical classification spreading machine through belt conveyer, mat formation uniformly by mechanical classification unit of mating formation Smooth particle mat, determines particle mat size specification according to hot press size；
7) particle mat is carried out precompressed, the pressure of precompressed is 0.8～0.9mpa, time 5～8min；Finally carry out heat Pressure, hot pressing pressure 2.5～3mpa, temperature is 200～210 DEG C, and hot pressing time is every millimeter of thickness of slab 80s～85s, then delivers to Quenched, prepared particieboard in balance storehouse.
3. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 1 produce cupboard board method it is characterised in that: Described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and the backboard process that gluing pastes particieboard respectively are: dried and moisture content are less than or equal to Vermins-proof mildew-proof composite urea formaldehyde resin adhesive coated respectively by 10% Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard, and single spreading amount is 200～230g/ m2, after being then covered on surface and the bottom surface of particieboard respectively, enter hot press carry out hot-forming, hot pressing pressure be 2.5～ 3.0mpa, hot pressing temperature is 130～135 DEG C, and hot pressing time is 10～15min；Described backboard is Eucalyptus veneer.
4. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 3 produce cupboard board method it is characterised in that: The drying steps of described Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are: first Lignum seu Ramulus Cunninghamiae Lanceolatae veneer and backboard are respectively placed in rail mounted multilamellar timber Then rail mounted multilamellar wood single-plate stoving rack is positioned over an airtight space by veneer stoving rack, with air stove dry up to The moisture content of veneer is less than or equal to 10%.
5. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 4 produce cupboard board method it is characterised in that: Described rail mounted multilamellar wood single-plate stoving rack, including support and spacing reticulum, multiple spacing reticulum stackings are hinged on support On, the upper and lower surface of spacing reticulum is fitted with spacing net, and spacing reticulum bottom is provided with cushion block, and cushion block is spacing by upper and lower two Reticulum separates, and wood single-plate is placed between upper and lower two spacing reticulums, and frame bottom is provided with pulley.
6. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 2 produce cupboard board method it is characterised in that: Described additive is any one in titanium dioxide, Pulvis Talci and white carbon.
7. employing Vermins-proof mildew-proof composite urea formaldehyde resin according to claim 1 produce cupboard board method it is characterised in that: Described decoration process is: facing paper is soaked in melamine solution, then is covered on the top layer of Chinese fir board through hot pressing, obtain Slab, slab is carried out cutting edge, then sanding, then above-mentioned slab is carried out health preserving process, the surrounding aluminum of last cupboard board Alloy fringing, is obtained the cupboard board with Vermins-proof mildew-proof performance.
8. the method that the employing Vermins-proof mildew-proof composite urea formaldehyde resin according to any one of claim 1-3 produces cupboard board, its It is characterised by: described Vermins-proof mildew-proof composite urea formaldehyde resin adhesive, it is made up of the raw material of following parts by weight:
50～100 parts of cyanurotriamide modified urea resin；
20～30 parts of Oxytarch；
1～3 part of polyvinyl alcohol；
3～8 parts of hydrogenated rosin；
2～3 parts of propanediol polyoxypropylene polyvinylether；
4～6 parts of polyisocyanate；
0.5～5 part of isobutyl triethoxy silane；
5～10 parts of phenolate lignin；
100～200 parts of clear water；
2.1～4.9 parts of Vermins-proof mildew-proof agent；
Described Vermins-proof mildew-proof agent is activated carbon powder, the mixture of bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder, and its part by weight is followed successively by 2:3:1:1；300 mesh sieves all crossed by described activated carbon powder, bamboo charcoal powder, Bulbus Allii powder and Fructus Capsici powder；
The production method of above-mentioned Vermins-proof mildew-proof composite urea formaldehyde resin: first the clear water of parts by weight is put in reactor, is heated to 80-100 DEG C, it is subsequently adding hydrogenated rosin, isobutyl triethoxy silane and the propanediol polyoxypropylene polyethylene of parts by weight Ether, stirs 10 minutes to 30 minutes, adds polyvinyl alcohol, the phenolate lignin of parts by weight, be allowed to dissolve, add weight The cyanurotriamide modified urea resin of number, Oxytarch and Vermins-proof mildew-proof agent, keep 80-90 DEG C of stirring reaction 2-5 hour, Add the polyisocyanate of parts by weight using front 10-20 minute, mixing and stirring can use.
CN201610752568.8A 2016-08-29 2016-08-29 Method for producing cabinet board with anti-insect and anti-mold composite urea-formaldehyde resin Pending CN106346587A (en)

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Application publication date: 20170125