CN114012858B - Production process of light high-strength PB plate - Google Patents
Production process of light high-strength PB plate Download PDFInfo
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- CN114012858B CN114012858B CN202111312748.1A CN202111312748A CN114012858B CN 114012858 B CN114012858 B CN 114012858B CN 202111312748 A CN202111312748 A CN 202111312748A CN 114012858 B CN114012858 B CN 114012858B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000002023 wood Substances 0.000 claims abstract description 91
- 238000010411 cooking Methods 0.000 claims abstract description 59
- 238000002156 mixing Methods 0.000 claims abstract description 51
- 239000000853 adhesive Substances 0.000 claims abstract description 37
- 230000001070 adhesive effect Effects 0.000 claims abstract description 37
- 238000005520 cutting process Methods 0.000 claims abstract description 33
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 26
- 239000004088 foaming agent Substances 0.000 claims abstract description 26
- 239000002667 nucleating agent Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 49
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 239000011259 mixed solution Substances 0.000 claims description 22
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 15
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 15
- 229920001938 Vegetable gum Polymers 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 15
- 229920001083 polybutene Polymers 0.000 claims description 15
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 11
- XMHIUKTWLZUKEX-UHFFFAOYSA-N hexacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O XMHIUKTWLZUKEX-UHFFFAOYSA-N 0.000 claims description 10
- ICGLPKIVTVWCFT-UHFFFAOYSA-N 4-methylbenzenesulfonohydrazide Chemical compound CC1=CC=C(S(=O)(=O)NN)C=C1 ICGLPKIVTVWCFT-UHFFFAOYSA-N 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- FEPBITJSIHRMRT-UHFFFAOYSA-N 4-hydroxybenzenesulfonic acid Chemical compound OC1=CC=C(S(O)(=O)=O)C=C1 FEPBITJSIHRMRT-UHFFFAOYSA-N 0.000 claims description 8
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
- 239000004113 Sepiolite Substances 0.000 claims description 7
- 229910021538 borax Inorganic materials 0.000 claims description 7
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 229910052624 sepiolite Inorganic materials 0.000 claims description 7
- 235000019355 sepiolite Nutrition 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 2
- 239000004604 Blowing Agent Substances 0.000 claims 1
- 210000002268 wool Anatomy 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012792 core layer Substances 0.000 description 4
- 241000218645 Cedrus Species 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 244000062720 Pennisetum compressum Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000012804 iterative process Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C
-
- 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
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
-
- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/20—Removing fungi, molds or insects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention belongs to the technical field of artificial board production, in particular to a light high-strength PB board production process, which solves the problems that in the prior art, a shaving board has high density and relatively high cost in the processing, transportation and use processes, and the application requirements of the high-performance light shaving board cannot be met due to poor strength of the light shaving board prepared from fast-growing wood and other low-density wood or non-wood raw materials, wherein the preparation method of the light high-strength PB board production process comprises the following steps: cutting and cooking fir wood to prepare wood shavings; and mixing the wood shavings with an adhesive nucleating agent, a curing agent and a foaming agent, paving, prepressing, hot-pressing, cooling, cutting edges, sanding, and drying to obtain the required PB plate. The preparation method is simple, the preparation cost is low, the obtained PB plate structure has small and uniform inner pore diameter, stable comprehensive performance and density as low as 389kg/m 3 It can be widely used in furniture and building industry and train and automobile carriage manufacturing industry.
Description
Technical Field
The invention relates to the technical field of artificial board production, in particular to a production process of a light high-strength PB board.
Background
The PB board is an artificial board, called as shaving board, particle board, bagasse board, etc., which is made by cutting a main raw material into pieces of a certain specification, drying, mixing with a sizing material, a hardening agent, a waterproofing agent, etc., and pressing at a certain temperature and pressure. The PB plate is mainly used for furniture and building industry, train and automobile carriage manufacturing and the like.
The production of Chinese PB boards has gone through an iterative process from the 20 th century rise in the 80 s, to the 90 s fall and again from the 2000 s rise. The quality of the PB board is obviously improved after the PB board is abandoned by the market due to poor quality and other reasons, many PB board enterprises absorb teaching and training, the quality of the Chinese PB board is obviously improved after foreign advanced production lines are introduced and the process level is improved, the PB board is accepted by the market again, many furniture production enterprises select the PB board as the raw material again, and the oriented PB board is accepted by consumers gradually, so the demand of the Chinese PB board is increased year by year in recent years. With the increasing demand of PB boards at home and abroad and the promotion of preferential policies of China, the development of the artificial board industry is encouraged, and excellent conditions are created for the development of the PB board industry.
The density of the prior furniture shaving board products for production and sale in China is mostly 620-720kg/m 3 Chipboards in this density range are relatively costly to process, transport and use due to their high density. Along with the shortage of wood resources and the increase of the demand of artificial boards on raw materials, the weight reduction gradually becomes a development trend. The light shaving board is used for replacing a common shaving board as non-structural furniture and a decorative board, so that the wood resource is saved, and the processing energy consumption and the transportation cost can be reduced. In the prior art, the method comprises the steps of adopting fast-growing wood and other low-density wood or non-wood raw materials, foaming the adhesive, introducing light filler, designing a slab structure and the like to realize the lightening of the shaving board. The Chinese invention patent CN107671979 discloses a production method of a lightweight particle board, and specifically discloses the following steps: A. preparing wood shavings: the surface layer is common wood fine wood shavings, and the core layer shavings are corn straw shavings and pennisetum alopecuroides straw shavings; B. and (3) drying: drying the wood shaving material until the water content is 1.5-2.5%; C. glue mixing: applying MUF resin with 8-10% of oven-dried wood shavings mass, emulsified paraffin with 53-55% of solid content and 1-1.5% of solid content to dried surface layer wood shavings, applying MUF resin with 0-3% of oven-dried core layer wood shavings mass, MDI resin with 62-65% of solid content and 2-5% of molten paraffin and 0.3% of curing agent to dried core layer wood shavings; D. paving and prepressing: paving the glued material into a plate blank with uniform thickness according to the surface-core-surface and then prepressing the plate blank; E. hot pressing: and hot-pressing the pre-pressed plate blank at the temperature of 170-190 ℃ and the pressure of 2.5-3.5MPa for 3-6min to obtain the light shaving board. The method changes the core layer wood shavings from common wood shavings into dense wood shavings based on the existing shaving board production processThe performance of the board is improved only by adding MDI resin, and the obtained shaving board cannot meet the application requirement of the high-performance light shaving board. Based on the statement, the invention provides a production process of a light high-strength PB plate.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the cost of a shaving board in the processing, transportation and use processes is relatively high due to high density, and the light-weight shaving board prepared from fast-growing wood and other low-density wood or non-wood raw materials has poor strength and cannot meet the application requirement of a high-performance light-weight shaving board.
A production process of a light high-strength PB plate comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 1-100cm, soaking the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 113-118 ℃, the cooking time is 1-2 hours, and the cooking material is obtained after the cooking is finished;
drying the cooking material until the water content is 15-35%, then feeding the dried cooking material into a wood shaving machine, controlling the length-width ratio to be 5-9:1 and the length-thickness ratio to be 14-18, preparing wood shavings with the length of 4-12mm, and drying the wood shavings until the water content is 3-6%;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 50-80r/min, wherein the mixing temperature is 50-80 ℃, and the mixing time is 2-4 hours, so as to obtain a mixture;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, cutting edges and sanding the plate blank, and drying until the water content is 5-9% to obtain the required PB plate.
Preferably, the cooking liquor in step S1 is prepared by the following method: (1) Heating glycerol to 88-108 ℃, keeping the temperature, adding cerotic acid, stirring and dissolving to obtain a mixed solution I; (2) Heating an acetic acid solution with the concentration of 18-35% to 45-65 ℃, preserving heat, adding magnesium oxide, stirring and dissolving to obtain a mixed solution II; (3) And mixing the mixed liquor I and the mixed liquor II, and uniformly stirring and dispersing to obtain the required cooking liquor.
Preferably, the mass ratio of the glycerol to the wax acid in the step (1) is 4-7:1-3.
Preferably, the mass ratio of the acetic acid solution to the magnesium oxide in the step (2) is 5-12.
Preferably, the mass ratio of the mixed liquor I to the mixed liquor II in the step (3) is 2-5:1-2.
Preferably, the mass ratio of the rosin resin, the polybutene, the diethyl ether and the vegetable gum in the step S2 is 1-2:3-5:8-12.
Preferably, the mass ratio of the wood shavings, the adhesive, the nucleating agent, the curing agent and the foaming agent in the step S3 is 160-180.
Preferably, the nucleating agent in the step S3 is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 1-10.
Preferably, the curing agent in the step S3 is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3-4:1-1.8.
Preferably, the foaming agent in the step S3 is p-toluenesulfonyl hydrazide with the mass ratio of 0.8-1.2 and an aqueous solution of sodium hydroxide with the concentration of 10-15%.
The production process of the light high-strength PB plate provided by the invention has the following beneficial effects:
1. the invention selects light and low-density fir as main raw material, cooks the fir to prepare wood shavings, then mixes the wood shavings with adhesive nucleating agent, curing agent and foaming agent, paves, prepresses, hot presses, cools, cuts edges, polishes and dries to obtain the required light and high-strength PB board(ii) a The preparation method is simple, the preparation cost is low, the prepared PB plate structure has small and uniform inner pore diameter, stable comprehensive performance and density as low as 389kg/m 3 It can be widely used in furniture and building industry and train and automobile carriage manufacturing industry.
2. Dissolving cerotic acid by using glycerol in advance to obtain a mixed solution I; dissolving magnesium oxide with acetic acid solution to obtain mixed solution II; finally, mixing the mixed solution I and the mixed solution II to prepare the required cooking liquor; the cedar wood is subjected to cooking treatment by using the cooking liquor, so that the strength, toughness and plasticity of the cedar wood can be effectively improved, and meanwhile, the fire resistance, corrosion resistance, antibacterial property and mildew resistance of the cedar wood can be improved; the natural luster and the natural fragrance of the wood are kept.
3. Adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the adhesive prepared by the invention is safe, nontoxic, formaldehyde-free, strong in viscosity, good in stability and high in peel strength, can be used for the gluing production of the PB board, can effectively prevent the PB board from cracking due to glue failure, improves the strength of the PB board, and is excellent in comprehensive performance, safe, environment-friendly and worthy of popularization.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 1cm, immersing the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 113 ℃, the cooking time is 1h, and obtaining a cooking material after cooking;
the cooking liquor is prepared by the following method: (1) Heating glycerol to 88 ℃ according to the mass ratio of 4:1, preserving heat, adding cerotic acid, stirring and dissolving to obtain a mixed solution I; (2) Heating an acetic acid solution with the concentration of 18% to 45 ℃ according to the mass ratio of 5:1, preserving heat, adding magnesium oxide, stirring and dissolving to obtain a mixed solution II; (3) Mixing the mixed liquor I and the mixed liquor II according to the mass ratio of 2:1, and uniformly stirring and dispersing to obtain the required cooking liquor;
drying the cooked material until the water content is 15%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 5:1 and the length-thickness ratio to be 14, preparing wood shavings with the length of 4mm, and drying the wood shavings until the water content is 3%;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the mass ratio of the rosin resin, the polybutene, the diethyl ether and the vegetable gum is (1);
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 50r/min, wherein the mixing temperature is 50 ℃, and the mixing time is 2 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the nucleating agent to the curing agent to the foaming agent is 160; the nucleating agent is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 1; the curing agent is a compound of p-hydroxyphenylsulfonic acid, glutaraldehyde and water in a mass ratio of 3; the foaming agent is p-toluenesulfonyl hydrazide with the mass ratio of 0.8 and a sodium hydroxide aqueous solution with the concentration of 10 percent;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat slab, pre-pressing, hot-pressing, cooling, cutting edges and sanding the slab, and drying until the water content is 5% to obtain the required PB plate.
Example two
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 50cm, immersing the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 115 ℃, the cooking time is 1.5 hours, and obtaining a cooking material after cooking;
the cooking liquor is prepared by the following method: (1) Heating glycerol to 98 ℃ according to a mass ratio of 5.5; (2) Heating an acetic acid solution with the concentration of 18-35% to 55 ℃ according to the mass ratio of 8:1, preserving heat, adding magnesium oxide, and stirring for dissolving to obtain a mixed solution II; (3) Mixing the mixed solution I and the mixed solution II according to the mass ratio of 3.5;
drying the cooked material until the water content is 25%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 7:1 and the length-thickness ratio to be 146 1, preparing wood shavings with the length of 8mm, and drying the wood shavings until the water content is 4.5%;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the mass ratio of the rosin resin to the polybutene to the ether to the vegetable gum is 1.5;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 65r/min, wherein the mixing temperature is 65 ℃, and the mixing time is 3 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the nucleating agent to the curing agent to the foaming agent is 170; the nucleating agent is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 5; the curing agent is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3.5; the foaming agent is p-toluenesulfonyl hydrazide with the mass ratio of 1:1 and an aqueous solution of sodium hydroxide with the concentration of 12.5 percent;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, cutting edges and sanding the plate blank, and drying until the water content is 7% to obtain the required PB plate.
EXAMPLE III
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 100cm, immersing the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 118 ℃, the cooking time is 2 hours, and obtaining a cooking material after cooking;
the cooking liquor is prepared by the following method: (1) Heating glycerol to 108 ℃ according to the mass ratio of 7:3, preserving heat, adding cerotic acid, stirring and dissolving to obtain a mixed solution I; (2) Heating an acetic acid solution with the concentration of 35% to 65 ℃ according to the mass ratio of 12; (3) Mixing the mixed liquor I and the mixed liquor II according to the mass ratio of 5:2, and uniformly stirring and dispersing to obtain the required cooking liquor;
drying the cooked material until the water content is 35%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 9:1 and the length-thickness ratio to be 18;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the mass ratio of the rosin resin to the polybutene to the ether to the vegetable gum is 2;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 80r/min, wherein the mixing temperature is 80 ℃, and the mixing time is 4 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the nucleating agent to the curing agent to the foaming agent is 180; the nucleating agent is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 10; the curing agent is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 4; the foaming agent comprises p-toluenesulfonyl hydrazide with the mass ratio of 1.2 and a sodium hydroxide aqueous solution with the concentration of 15 percent, wherein the p-toluenesulfonyl hydrazide and the sodium hydroxide aqueous solution are mixed in the foaming agent in a ratio of 1.2;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, cutting edges and sanding the plate blank, and drying until the water content is 9% to obtain the required PB plate.
Comparative example 1
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, and cutting the fir wood to obtain a cutting material with the size of 50 cm;
drying the cutting material until the water content is 25%, then feeding the dried and cooked material into a wood shaving machine, controlling the length-width ratio to be 7:1 and the length-thickness ratio to be 146 1, preparing wood shavings with the length of 8mm, and drying the wood shavings until the water content is 4.5%;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the mass ratio of the rosin resin to the polybutene to the ether to the vegetable gum is 1.5;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 65r/min, wherein the mixing temperature is 65 ℃, and the mixing time is 3 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the nucleating agent to the curing agent to the foaming agent is 170; the nucleating agent is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 5; the curing agent is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3.5; the foaming agent is p-toluenesulfonyl hydrazide with the mass ratio of 1:1 and an aqueous solution of sodium hydroxide with the concentration of 12.5 percent;
s4, forming:
sending the mixture prepared in the step S3 into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, edge cutting and sanding the plate blank, and drying until the water content is 7% to obtain the required PB plate
Comparative example No. two
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 50cm, immersing the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 115 ℃, the cooking time is 1.5 hours, and obtaining a cooking material after cooking;
the cooking liquor is prepared by the following method: (1) Heating glycerol to 98 ℃ according to a mass ratio of 5.5; (2) Heating an acetic acid solution with the concentration of 18-35% to 55 ℃ according to the mass ratio of 8:1, preserving heat, adding magnesium oxide, and stirring for dissolving to obtain a mixed solution II; (3) Mixing the mixed solution I and the mixed solution II according to the mass ratio of 3.5;
drying the cooked material until the water content is 25%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 7:1 and the length-thickness ratio to be 146 1, preparing wood shavings with the length of 8mm, and drying the wood shavings until the water content is 4.5%;
s2, preparing an adhesive:
preparing formaldehyde-based adhesive;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 65r/min, wherein the mixing temperature is 65 ℃, and the mixing time is 3 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the nucleating agent to the curing agent to the foaming agent is 170.5; the nucleating agent is a compound of silicon dioxide, sepiolite fibers and sodium tetraborate in a mass ratio of 5; the curing agent is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3.5; the foaming agent is p-toluenesulfonyl hydrazide with the mass ratio of 1:1 and an aqueous solution of sodium hydroxide with the concentration of 12.5 percent;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, cutting edges and sanding the plate blank, and drying until the water content is 7% to obtain the required PB plate.
Comparative example No. three
The invention provides a production process of a light high-strength PB plate, which comprises the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cut material with the size of 50cm, immersing the cut material into cooking liquor for cooking treatment, wherein the cooking temperature is 115 ℃, the cooking time is 1.5h, and obtaining the cooking material after cooking;
the cooking liquor is prepared by the following method: (1) Heating glycerol to 98 ℃ according to a mass ratio of 5.5; (2) Heating an acetic acid solution with the concentration of 18-35% to 55 ℃ according to the mass ratio of 8:1, preserving heat, adding magnesium oxide, and stirring for dissolving to obtain a mixed solution II; (3) Mixing the mixed solution I and the mixed solution II according to the mass ratio of 3.5;
drying the cooked material until the water content is 25%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 7:1 and the length-thickness ratio to be 146 1, preparing wood shavings with the length of 8mm, and drying the wood shavings until the water content is 4.5%;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive; the mass ratio of the rosin resin to the polybutene to the ether to the vegetable gum is 1.5;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 65r/min, wherein the mixing temperature is 65 ℃, and the mixing time is 3 hours, so as to obtain a mixture; the mass ratio of the wood shavings to the adhesive to the curing agent to the foaming agent is 170.5; the curing agent is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3.5; the foaming agent is p-toluenesulfonyl hydrazide with the mass ratio of 1:1 and an aqueous solution of sodium hydroxide with the concentration of 12.5 percent;
s4, forming:
and (4) delivering the mixture prepared in the step (S3) into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, cutting edges and sanding the plate blank, and drying until the water content is 7% to obtain the required PB plate.
The performances of the PB sheets prepared in examples one to three of the present invention and comparative examples one to three were respectively tested according to the standard GB/T17657-2013, with the results as follows:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. The production process of the light high-strength PB plate is characterized by comprising the following steps:
s1, preparing wood shavings:
selecting fir wood, cutting the fir wood to obtain a cutting material with the size of 1-100cm, immersing the cutting material into cooking liquor for cooking treatment, wherein the cooking temperature is 113-118 ℃, the cooking time is 1-2h, and obtaining a cooking material after cooking;
drying the cooked material until the water content is 15-35%, then feeding the dried cooked material into a wood shaving machine, controlling the length-width ratio to be 5-9:1 and the length-thickness ratio to be 14-18;
s2, preparing an adhesive:
adding rosin resin and polybutene into ether together, stirring, dispersing and dissolving, adding vegetable gum, grinding and mixing uniformly to obtain an adhesive;
s3, mixing materials:
adding the dried wood shavings obtained in the step S1 and the adhesive obtained in the step S2 into a stirrer together, adding a nucleating agent, a curing agent and a foaming agent, uniformly stirring and mixing at a low speed and a same direction at a rotating speed of 50-80r/min, wherein the mixing temperature is 50-80 ℃, and the mixing time is 2-4 hours, so as to obtain a mixture;
s4, forming:
sending the mixture prepared in the step S3 into a paving machine for paving to form a flat plate blank, pre-pressing, hot-pressing, cooling, edge cutting and sanding the plate blank, and drying until the water content is 5-9% to obtain the required PB plate;
the cooking liquor in the step S1 is prepared by the following method: (1) Heating glycerol to 88-108 ℃, keeping the temperature, adding cerotic acid, stirring and dissolving to obtain a mixed solution I; (2) Heating 18-35% acetic acid solution to 45-65 deg.C, maintaining the temperature, adding magnesium oxide, stirring, and dissolving to obtain mixed solution II; (3) And mixing the mixed liquor I and the mixed liquor II, and uniformly stirring and dispersing to obtain the required cooking liquor.
2. The process for producing a lightweight high-strength PB plate as in claim 1, wherein the mass ratio of glycerol to wax acid in step (1) is 4-7:1-3.
3. The process for producing a lightweight high-strength PB plate as claimed in claim 1, wherein the mass ratio of the acetic acid solution to the magnesium oxide in step (2) is 5-12.
4. The process for producing a lightweight high-strength PB plate as in claim 1, wherein the mass ratio of the mixed solution I to the mixed solution II in step (3) is 2-5:1-2.
5. The production process of the light high-strength PB plate as claimed in claim 1, wherein the mass ratio of the rosin resin, the polybutene, the diethyl ether and the vegetable gum in the step S2 is 1-2:3-5:8-12.
6. The process for producing a lightweight high-strength PB plate as claimed in claim 1, wherein the mass ratio of wood wool, adhesive, nucleating agent, curing agent and foaming agent in step S3 is 160-180.
7. The production process of the light high-strength PB plate as in claim 1, wherein the nucleating agent in the step S3 is a compound of silica, sepiolite fibers and sodium tetraborate in a mass ratio of 1-10.
8. The production process of the light high-strength PB plate as in claim 1, wherein the curing agent in the step S3 is a compound of p-hydroxybenzene sulfonic acid, glutaraldehyde and water in a mass ratio of 3-4:1-1.8.
9. The process for producing a light-weight, high-strength PB plate according to claim 1, wherein the blowing agent in step S3 is p-toluenesulfonyl hydrazide in a mass ratio of 0.8 to 1.2 and an aqueous solution of sodium hydroxide in a concentration of 10 to 15%.
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Denomination of invention: A production process for lightweight and high-strength PB board Effective date of registration: 20231212 Granted publication date: 20221011 Pledgee: Zhongyuan Bank Co.,Ltd. Zhumadian Branch Pledgor: Jianowei Group (Henan) Technology Co.,Ltd. Registration number: Y2023980070985 |