CN110039613A - A kind of production method of the vertical glued board of resist delamination water-impervious - Google Patents
A kind of production method of the vertical glued board of resist delamination water-impervious Download PDFInfo
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- CN110039613A CN110039613A CN201910240857.3A CN201910240857A CN110039613A CN 110039613 A CN110039613 A CN 110039613A CN 201910240857 A CN201910240857 A CN 201910240857A CN 110039613 A CN110039613 A CN 110039613A
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- glued board
- added
- impervious
- resist delamination
- production method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of production methods of vertical glued board of resist delamination water-impervious, it include: that aminated lignin is dissolved in DMF, after adding PEG200, neopentyl glycol stirring and dissolving, isophorone diisocyanate is added to stir evenly, then lauric acid bismuth is added dropwise thereto, reaction obtains first material；Chitosan is dissolved in hydrochloric acid, 3,4-Dihydroxyphenylacetic acid is added and obtains mixed solution；Then EDC/NHS is dissolved in ethanol water, then is added dropwise in mixed solution and reacts, be subsequently placed in the hydrochloric acid that pH is 5 and dialyse, freeze-drying obtains second material；Sesame protein is added in aqueous solution of urea and is stirred, zinc oxide is then added and stirs to get third material；First material and second material are added in third material and are uniformly mixed, strong oxidizer is subsequently added into and is uniformly mixed, be coated in veneer surface, then adjacent veneer gluing, superposition, multilayer assembly, hot pressing obtain the vertical glued board of resist delamination water-impervious.
Description
Technical field
The present invention relates to board technology field more particularly to a kind of production methods of the vertical glued board of resist delamination water-impervious.
Background technique
Glued board is an important board kind in wood-based plate, and since glued board has, deformation is small, breadth is big, construction is inconvenient, no
Easy warpage, the features such as tensile strength perpendicular to grain is big, obtain extensively in furniture, compartment, shipbuilding, military project, packaging and other industrial departments
Using.
Glued board be suppressed by multilayer single plate by glue, therefore contain a large amount of glue, cause heat-resisting, waterproofness compared with
Difference, glued board will lead to its layering and even rot after making moist, so that plate be caused not to be available, existing market has using in its table
The technology of underwater paint is smeared in face, and for improving waterproofness, but after a period of time, plate still will appear the dampness problems such as infiltration, can not
Thoroughly solve.
Contain formaldehyde in glue used in glued board simultaneously, to thoroughly solve the problems, such as that free formaldehyde pollutes, must just grind
System exploitation formaldehyde binder.In recent years developmental research it is more be biological adhesive, i.e., using animal protein or vegetable protein as base
The adhesive of body, but the glue-line after often solidifying is harder, and water resistance is poor, has off-odor, and easily go mouldy.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of resist delamination water-impervious proposed is perpendicular
To the production method of glued board, the vertical glued board bonding strength of gained resist delamination water-impervious, water resistance, mould proof rate performance are excellent
Show, and environmental protection.
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1, aminated lignin is dissolved in n,N-Dimethylformamide, adds polyethylene glycol 200, neopentyl glycol stirs
It after mixing dissolution, is subsequently added into isophorone diisocyanate and stirs evenly, lauric acid bismuth is then added dropwise thereto, reaction obtains the
One material；
S2, chitosan is dissolved in hydrochloric acid, adjusts pH value to 5, adds 3,4-Dihydroxyphenylacetic acid and obtain mixed solution；
Then 1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and n-hydroxysuccinimide are dissolved in ethanol water
In, then be added dropwise in mixed solution and react, it is 4.5-5.0 that pH value is maintained in reaction process, is subsequently placed in the hydrochloric acid that pH is 5
Middle dialysis, freeze-drying obtain second material；
S3, sesame protein is added in aqueous solution of urea and is stirred, defoaming agent is added in whipping process, zinc oxide is then added
Stir to get third material；
S4, it will be uniformly mixed in first material and second material addition third material, it is equal to be subsequently added into strong oxidizer mixing
It is even, it is coated in veneer surface, then adjacent veneer is glued, is superimposed, multilayer assembly, and it is vertically glued that hot pressing obtains resist delamination water-impervious
Plate.
The preparation process of above-mentioned aminated lignin is as follows:
10-15 parts of alkali lignins are dissolved in sodium hydroxide solution by weight, add 0.1-0.15 parts of iron hydroxides
It is uniformly dispersed, is subsequently added into the hydrogenperoxide steam generator that 40-60 parts of mass fractions are 28-30%, 55-65 DEG C of water-bath keeps the temperature 0.5-
1.5h is filtered to remove iron hydroxide residue, and the salt acid for adjusting pH value for being 12% with mass fraction is to 2.0, extremely by sediment undergoes washing
It is in neutrality, 75-85 DEG C of drying, grinding obtains hydroxylating lignin；
It by weight disperses 10-15 parts of hydroxylating lignin in deionized water, adjusting pH value is 11.5, to be dissolved complete
9-13 parts of diethylenetriamines are added in 70-78 DEG C of water-bath insulating process, stir evenly by Quan Hou, 40-50 DEG C of stirring 5-10min, then
6-9 parts of formaldehyde return stirrings are added and react 3-4h, then is placed in excessive isopropanol and precipitates, filters, cleans precipitating with isopropanol
Object is colourless to filtrate, and 50 DEG C of vacuum drying, grinding obtains aminated lignin.
Above-mentioned alkali lignin by concentrated caustic liquid thermophilic digestion, filter out remaining black liquid spray drying after cellulose,
It is refining to obtain.
It is above-mentioned that alkali lignin is modified using hydrogen peroxide and iron hydroxide system.Hydrogen peroxide is in ferric ion
Under the action of generate hydroxyl radical free radical and hydroperoxyl radical, and then lignin structure is attacked, so that the ether in lignin structure
Key fracture is then modified hydroxylating lignin using Mannich reaction, introduces amido to generate new hydroxyl.
It is above-mentioned that continuous hydroxylating and amination modifying are carried out to lignin, the content of hydroxyl in raising lignin, and
Primary amine groups are introduced in lignin, these are all conducive to application of the aminated lignin in polyurethane synthesis.
Preferably, in S1, aminated lignin, polyethylene glycol 200, neopentyl glycol, isoflurane chalcone diisocyanate, lauric acid
The mass ratio of bismuth is 60-70:0.5-1.5:0.5-1.5:10-20:0.6-1.
Preferably, in S1, reaction temperature is 40-50 DEG C, reaction time 60-90min.
Preferably, in S2, chitosan, 3,4-Dihydroxyphenylacetic acid, 1- (3- dimethylamino-propyl) -3- ethyl carbodiimide
The mass ratio of hydrochloride and n-hydroxysuccinimide is 0.5-0.6:2-3:1.5-2:1-1.4.
Preferably, in S2, it is in 0.08-0.12mol/L hydrochloric acid that chitosan, which is dissolved in concentration,.
Preferably, in S2, the volume fraction of ethanol water is 50%.
Preferably, in S2, reaction temperature is 40-50 DEG C, reaction time 9-12h.
Preferably, in S2, dialysis time is 3-4d in hydrochloric acid.
Preferably, in S3, sesame protein, aqueous solution of urea, zinc oxide mass ratio be 10-20:80-100:0.8-1.6,
Concentration of aqueous solution of urea is 2.7-3.3mol/L.
Preferably, in S4, first material, second material, third material, strong oxidizer mass ratio be 20-30:10-20:
50-70:1-2.
Preferably, in S4, strong oxidizer is sodium metaperiodate, potassium permanganate, potassium bichromate, sodium hypochlorite, chlorine dioxide, mistake
At least one of sulfate, peroxide, preferably sodium metaperiodate.
Preferably, in S4, glue-spread 200-220g/m2, hot pressing temperature is 130-140 DEG C, hot pressing time 14-
16min, hot pressing pressure are 1.3-1.5Mpa.
In S1 of the present invention, uses above-mentioned aminated lignin substitution polyalcohol with synthesis of polyurethane, reduce the synthesis of polyurethane
Cost also significantly improves the performance of polyurethane material.Due in aminated lignin contain a large amount of primary amine groups, primary amine groups with it is different
Cyanate can react generation urea groups, and the mechanical performance of urea groups is much better than the mechanical performance of conventional polyurethanes, while different Fo Er
Ketone diisocyanate has backbone, and above-mentioned aminated lignin is rich in hydroxyl as hard section, improves soft in polyurethane material
Hard section ratio forms firm network structure, effectively improves its elongation rate of tensile failure, to promote glued between plate.
Chitosan has excellent antibiotic property, nontoxic, good biocompatibility and biodegradability, while having solely
Special bioactivity and physicochemical property in weaving and is printed and dyed, the application prospect that papermaking and chemical industry, medicine and other fields are open, is caused
The extensive attention of people.However chitosan mainly passes through charge interaction and is adhered with plate, the ability of being adhered is limited
's.
In S2 of the present invention, catechol group is grafted by coupling reaction in chitosan molecule structure and forms second material,
It is bionical to the progress of mussel byssus, to further promote glued between plate.
In S3 of the present invention, the chondritic of sesame protein is destroyed using urea, the structure of sesame protein is unfolded, formed small
The chain albumen of molecule, exposes more active groups, such as amino and carboxyl, then using zinc oxide and above-mentioned chain albumen into
Row chelating, the complete structure of formation rule, later period can form network-like cross-linked structure, can be with coarse wood surface structure phase
In conjunction with, while the hole on its surface is fewer and fewer, effectively prevents the infiltration of moisture, improves water resistance.
In S4 of the present invention, it is mutually mixed uniformly using first material, second material, third material, strong oxidizer is added, promoted
The catechol group in second material is set to be oxidized to form adjacent benzene diquinone, quinonyl has irreversible with formation such as sulfydryl and amino
The ability of covalent bond, raising reacts to form covalent bond with the groups such as amino, sulfydryl in wood tissue, while first material, second
Material, third material form the grid type cross-linked structure of interpenetrating, i.e. first material grid, second material under oxidant effect
Grid, third material grid mutually locking, improve adjacent veneer bonding strength, effectively prevent delamination, then under hot pressing condition into
Row solidification, keeps the gap between adjacent veneer few, effectively prevents the infiltration of moisture, while rich in amido and the in first material
Chitosan in two materials cooperates, and improves anti-microbial property, prevents glued board from going mouldy.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment 1
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1,60g aminated lignin is dissolved in n,N-Dimethylformamide, adds 1.5g polyethylene glycol 200,0.5g
It after neopentyl glycol stirring and dissolving, is subsequently added into 20g isophorone diisocyanate and stirs evenly, 1g laurel is then added dropwise thereto
Sour bismuth, 40 DEG C of reaction 90min, obtains first material；
S2,0.5g chitosan is dissolved in concentration in 0.12mol/L hydrochloric acid, to adjust pH value to 5, adds 2g3,4- dihydroxy
Base phenylacetic acid obtains mixed solution；Then by 2g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and 1gN- hydroxyl
Base succinimide is dissolved in ethanol water, then is added dropwise in mixed solution, 50 DEG C of reaction 12h, is tieed up in reaction process
Holding pH value is 4.5-5.0, is subsequently placed in the hydrochloric acid that pH is 5 3d that dialyses, and freeze-drying obtains second material；
S3,20g sesame protein is added in the aqueous solution of urea that 80g concentration is 3.3mol/L and stirs 30min, whipping process
Then middle addition defoaming agent is added 1.6g zinc oxide and stirs 210min, obtains third material；
S4, it will be uniformly mixed in 30g first material and 10g second material addition 70g third material, be subsequently added into 1g Gao Meng
Sour potassium is uniformly mixed, and is coated in veneer surface, glue-spread 220g/m2, then adjacent veneer is glued, is superimposed, multilayer assembly, heat
Pressure obtains the vertical glued board of resist delamination water-impervious, and hot pressing temperature is 130 DEG C, hot pressing time 16min, and hot pressing pressure is
1.3Mpa。
Embodiment 2
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1,70g aminated lignin is dissolved in n,N-Dimethylformamide, adds 0.5g polyethylene glycol 200,1.5g
It after neopentyl glycol stirring and dissolving, is subsequently added into 10g isophorone diisocyanate and stirs evenly, 1g laurel is then added dropwise thereto
Sour bismuth, 50 DEG C of reaction 60min, obtains first material；
S2,0.6g chitosan is dissolved in concentration in 0.08mol/L hydrochloric acid, to adjust pH value to 5, adds 3g3,4- dihydroxy
Base phenylacetic acid obtains mixed solution；Then by 1.5g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and
1.4gN- HOSu NHS is dissolved in ethanol water, then is added dropwise in mixed solution, and 40 DEG C of reaction 9h reacted
It is 4.5-5.0 that pH value is maintained in journey, is subsequently placed in the hydrochloric acid that pH is 5 4d that dialyses, and freeze-drying obtains second material；
S3,10g sesame protein is added in the aqueous solution of urea that 100g concentration is 2.7mol/L and stirs 50min, it is stirred
Defoaming agent is added in journey, 0.8g zinc oxide is then added and stirs 240min, obtains third material；
S4, it will be uniformly mixed in 20g first material and 20g second material addition 50g third material, be subsequently added into 2g dioxy
Change chlorine to be uniformly mixed, is coated in veneer surface, glue-spread 200g/m2, then adjacent veneer is glued, is superimposed, multilayer assembly, heat
Pressure obtains the vertical glued board of resist delamination water-impervious, and hot pressing temperature is 140 DEG C, hot pressing time 14min, and hot pressing pressure is
1.5Mpa。
Embodiment 3
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1,63g aminated lignin is dissolved in n,N-Dimethylformamide, adds 1.2g polyethylene glycol 200,0.7g
It after neopentyl glycol stirring and dissolving, is subsequently added into 17g isophorone diisocyanate and stirs evenly, the 0.7g month is then added dropwise thereto
Cinnamic acid bismuth, 47 DEG C of reaction 70min, obtains first material；
S2,0.58g chitosan is dissolved in concentration in 0.09mol/L hydrochloric acid, to adjust pH value to 5, adds 2.7g3,4-
Dihydroxyphenyl acetic acid obtains mixed solution；Then by 1.6g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and
1.3gN- HOSu NHS is dissolved in ethanol water, then is added dropwise in mixed solution, 42 DEG C of reaction 11h, reaction
Maintaining pH value in the process is 4.5-5.0, is subsequently placed in the hydrochloric acid that pH is 5 3d that dialyses, and freeze-drying obtains second material；
S3,18g sesame protein is added in the aqueous solution of urea that 85g concentration is 3.2mol/L and stirs 35min, whipping process
Then middle addition defoaming agent is added 1.4g zinc oxide and stirs 220min, obtains third material；
S4, it will be uniformly mixed in 28g first material and 13g second material addition 65g third material, be subsequently added into 1.3g mistake
Sodium sulphate is uniformly mixed, and is coated in veneer surface, glue-spread 215g/m2, then adjacent veneer is glued, is superimposed, multilayer assembly,
Hot pressing obtains the vertical glued board of resist delamination water-impervious, and hot pressing temperature is 133 DEG C, hot pressing time 15.5min, and hot pressing pressure is
1.35Mpa。
Embodiment 4
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1,67g aminated lignin is dissolved in n,N-Dimethylformamide, adds 0.8g polyethylene glycol 200,1.3g
It after neopentyl glycol stirring and dissolving, is subsequently added into 13g isophorone diisocyanate and stirs evenly, the 0.9g month is then added dropwise thereto
Cinnamic acid bismuth, 43 DEG C of reaction 80min, obtains first material；
S2,0.52g chitosan is dissolved in concentration in 0.11mol/L hydrochloric acid, to adjust pH value to 5, adds 2.3g3,4-
Dihydroxyphenyl acetic acid obtains mixed solution；Then by 1.8g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and
1.1gN- HOSu NHS is dissolved in ethanol water, then is added dropwise in mixed solution, 48 DEG C of reaction 10h, reaction
Maintaining pH value in the process is 4.5-5.0, is subsequently placed in the hydrochloric acid that pH is 5 4d that dialyses, and freeze-drying obtains second material；
S3,14g sesame protein is added in the aqueous solution of urea that 95g concentration is 2.8mol/L and stirs 45min, whipping process
Then middle addition defoaming agent is added 1g zinc oxide and stirs 230min, obtains third material；
S4, it will be uniformly mixed, be subsequently added into 1.7g times in 22g first material and 17g second material addition 55g third material
Sodium chlorate is uniformly mixed, and is coated in veneer surface, glue-spread 205g/m2, then adjacent veneer is glued, is superimposed, multilayer assembly,
Hot pressing obtains the vertical glued board of resist delamination water-impervious, and hot pressing temperature is 137 DEG C, hot pressing time 14.5min, and hot pressing pressure is
1.45Mpa。
Embodiment 5
A kind of production method of vertical glued board of resist delamination water-impervious proposed by the present invention, comprising the following steps:
S1,65g aminated lignin is dissolved in n,N-Dimethylformamide, adds 1g polyethylene glycol 200,1g new penta
It after glycol stirring and dissolving, is subsequently added into 15g isophorone diisocyanate and stirs evenly, 0.8g lauric acid is then added dropwise thereto
Bismuth, 45 DEG C of reaction 75min, obtains first material；
S2,0.55g chitosan is dissolved in concentration in 0.1mol/L hydrochloric acid, to adjust pH value to 5, adds 2.5g3,4- bis-
Hydroxyl phenylacetic acid obtains mixed solution；Then by 1.7g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and
1.2gN- HOSu NHS is dissolved in ethanol water, then is added dropwise in mixed solution, 45 DEG C of reaction 10.5h, instead
Should maintain pH value in the process is 4.5-5.0, is subsequently placed in the hydrochloric acid that pH is 5 3.5d that dialyses, and freeze-drying obtains second material；
S3,16g sesame protein is added in the aqueous solution of urea that 90g concentration is 3mol/L and stirs 40min, in whipping process
Defoaming agent is added, 1.2g zinc oxide is then added and stirs 225min, obtains third material；
S4, it will be uniformly mixed in 25g first material and 15g second material addition 60g third material, be subsequently added into 1.5g high
Sodium iodate is uniformly mixed, and is coated in veneer surface, glue-spread 210g/m2, then adjacent veneer is glued, is superimposed, multilayer assembly,
Hot pressing obtains the vertical glued board of resist delamination water-impervious, and hot pressing temperature is 135 DEG C, hot pressing time 15min, and hot pressing pressure is
1.4Mpa。
Comparative example 1
It is only that the aminated lignin of S1 is changed to alkali lignin with the difference of embodiment 5.
Comparative example 2
It is only that S2 is deleted with the difference of embodiment 5, second material is changed to chitosan.
Comparative example 3
Non-oxidation zinc in S3 is only that with the difference of embodiment 5.
Comparative example 4
It is only that in S4 with the difference of embodiment 5 without sodium metaperiodate.
Comparative example 5
A kind of production method of glued board, comprising the following steps:
S1,65g aminated lignin is dissolved in n,N-Dimethylformamide, adds 1g polyethylene glycol 200,1g new penta
It after glycol stirring and dissolving, is subsequently added into 15g isophorone diisocyanate and stirs evenly, 0.8g lauric acid is then added dropwise thereto
Bismuth, 45 DEG C of reaction 75min, obtains first material；
S2,25g first material is uniformly mixed, is coated in veneer surface, glue-spread 210g/m2, then adjacent veneer
Glued, superposition, multilayer assembly, hot pressing obtain glued board, and hot pressing temperature is 135 DEG C, hot pressing time 15min, and hot pressing pressure is
1.4Mpa。
Comparative example 6
A kind of production method of glued board, comprising the following steps:
S1,0.55g chitosan is dissolved in concentration in 0.1mol/L hydrochloric acid, to adjust pH value to 5, adds 2.5g3,4- bis-
Hydroxyl phenylacetic acid obtains mixed solution；Then by 1.7g1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and
1.2gN- HOSu NHS is dissolved in ethanol water, then is added dropwise in mixed solution, 45 DEG C of reaction 10.5h, instead
Should maintain pH value in the process is 4.5-5.0, is subsequently placed in the hydrochloric acid that pH is 5 3.5d that dialyses, and freeze-drying obtains second material；
S2,15g second material addition 1.5g sodium metaperiodate is uniformly mixed, is coated in veneer surface, glue-spread 210g/
m2, then adjacent veneer is glued, is superimposed, multilayer assembly, and hot pressing obtains glued board, and hot pressing temperature is 135 DEG C, and hot pressing time is
15min, hot pressing pressure are 1.4Mpa.
Comparative example 7
A kind of production method of glued board, comprising the following steps:
S1,16g sesame protein is added in the aqueous solution of urea that 90g concentration is 3mol/L and stirs 40min, in whipping process
Defoaming agent is added, 1.2g zinc oxide is then added and stirs 225min, obtains third material；
S2,60g third material addition 1.5g sodium metaperiodate is uniformly mixed, is coated in veneer surface, glue-spread 210g/
m2, then adjacent veneer is glued, is superimposed, multilayer assembly, and hot pressing obtains glued board, and hot pressing temperature is 135 DEG C, and hot pressing time is
15min, hot pressing pressure are 1.4Mpa.
Glued board obtained by the vertical glued board of 5 gained resist delamination water-impervious of embodiment, comparative example 1-7 is subjected to glue performance survey
Examination, the glued board after hot pressing place 12h or more under room temperature environment, carry out appearance detection:
Embodiment 5 and comparative example 1, comparative example 3-5, comparative example 7 go out without bubbling without layering, comparative example 2 and 6 part of comparative example
It is now bubbled, no layering.
Referring next to A type sample dimensions in GB/T9846.7-2004 requirement (length × width be 100mm × 25mm) to three layers
Glued board carries out saw system.
Dry glue intensity is tested using omnipotent mechanics machine, and test specimen is sandwiched in two floating holders, is allowed to protect
Straight line is held, test specimen center passes through the axis of testing machine floating holder.Retained part should be in 5mm range at a distance from test specimen slot
It is interior.At the uniform velocity to test specimen load lotus to destroying, adding load rate is 5.0mm/min.
Wet bonding strength is referring in GB/T17657-2013 " test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels " II
The requirement of class glued board is tested, and test specimen is immersed in 3h in 63 DEG C of water, then cools down 10min at room temperature, is carried out wet
Bonding strength test.
Its result is as follows:
Glued board obtained by the vertical glued board of 5 gained resist delamination water-impervious of embodiment, comparative example 1-7 is tested into mildew resistance respectively
Energy and burst size of methanal: it is inoculated with mould to each face veneer, detects mould proof rate；With reference to GB/T17657-2013, using drying
The burst size of methanal of device method measurement glued board.Its result is as follows:
| Mould proof rate, % | Burst size of methanal, mg/L | |
| Embodiment 5 | 98.2 | 0.048 |
| Comparative example 1 | 96.9 | 0.060 |
| Comparative example 2 | 97.5 | 0.071 |
| Comparative example 3 | 92.7 | 0.084 |
| Comparative example 4 | 96.3 | 0.092 |
| Comparative example 5 | 89.8 | 0.126 |
| Comparative example 6 | 95.4 | 0.042 |
| Comparative example 7 | 82.6 | 0.035 |
Glued board obtained by the vertical glued board of 5 gained resist delamination water-impervious of embodiment, comparative example 1-7 is met into GB/
The plate requirement of (≤0.5mg/L) E0 grades in T9846-2004, and far below the minimum limitation in national standard.And the formaldehyde
Burst size may be since timber is by Form aldehyde release caused by hot pressing, be not what adhesive itself discharged.
The above results confirm: the present invention gained vertical glued board of resist delamination water-impervious, bonding strength, water resistance, mould proof
Rate excellent performance is free of formaldehyde.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of production method of the vertical glued board of resist delamination water-impervious, which comprises the following steps:
S1, aminated lignin is dissolved in n,N-Dimethylformamide, add polyethylene glycol 200, neopentyl glycol stirring it is molten
Xie Hou is subsequently added into isophorone diisocyanate and stirs evenly, and lauric acid bismuth is then added dropwise thereto, and reaction obtains the first object
Material；
S2, chitosan is dissolved in hydrochloric acid, adjusts pH value to 5, adds 3,4-Dihydroxyphenylacetic acid and obtain mixed solution；Then
1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and n-hydroxysuccinimide are dissolved in ethanol water,
It is added dropwise in mixed solution and reacts again, it is 4.5-5.0 that pH value is maintained in reaction process, is subsequently placed in the hydrochloric acid that pH is 5
Dialysis, freeze-drying obtain second material；
S3, sesame protein is added in aqueous solution of urea and is stirred, defoaming agent is added in whipping process, zinc oxide stirring is then added
Obtain third material；
S4, it will be uniformly mixed in first material and second material addition third material, be subsequently added into strong oxidizer and be uniformly mixed, apply
Veneer surface is overlayed on, then adjacent veneer is glued, is superimposed, multilayer assembly, and hot pressing obtains the vertical glued board of resist delamination water-impervious.
2. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S1, amine
Change lignin, polyethylene glycol 200, neopentyl glycol, isoflurane chalcone diisocyanate, lauric acid bismuth mass ratio be 60-70:0.5-
1.5:0.5-1.5:10-20:0.6-1.
3. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S1, instead
Answering temperature is 40-50 DEG C, reaction time 60-90min.
4. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S2, shell
Glycan, 3,4- dihydroxyphenyl acetic acid, 1- (3- dimethylamino-propyl) -3- ethyl-carbodiimide hydrochloride and N- hydroxysuccinimidyl acyl are sub-
The mass ratio of amine is 0.5-0.6:2-3:1.5-2:1-1.4.
5. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S2, shell
It is in 0.08-0.12mol/L hydrochloric acid that glycan, which is dissolved in concentration,.
6. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S2, second
The volume fraction of alcohol solution is 50%.
7. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S2, instead
Answering temperature is 40-50 DEG C, reaction time 9-12h.
8. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S2, salt
Dialysis time is 3-4d in acid.
9. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S3, sesame
Numb albumen, aqueous solution of urea, zinc oxide mass ratio be 10-20:80-100:0.8-1.6, concentration of aqueous solution of urea 2.7-
3.3mol/L。
10. the production method of the vertical glued board of resist delamination water-impervious according to claim 1, which is characterized in that in S4, the
One material, second material, third material, strong oxidizer mass ratio be 20-30:10-20:50-70:1-2.
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| CN111072892A (en) * | 2019-11-28 | 2020-04-28 | 梅亚萍 | Polyurethane foam filling material for sound-insulation heat-insulation aluminum door |
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