CN107446523A - A kind of glued board adhesive - Google Patents
A kind of glued board adhesive Download PDFInfo
- Publication number
- CN107446523A CN107446523A CN201710761634.2A CN201710761634A CN107446523A CN 107446523 A CN107446523 A CN 107446523A CN 201710761634 A CN201710761634 A CN 201710761634A CN 107446523 A CN107446523 A CN 107446523A
- Authority
- CN
- China
- Prior art keywords
- glued board
- water
- board adhesive
- adhesive according
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 49
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229920001661 Chitosan Polymers 0.000 claims abstract description 27
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 24
- 229920002752 Konjac Polymers 0.000 claims abstract description 23
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 18
- 235000013312 flour Nutrition 0.000 claims abstract description 18
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 11
- 229960000583 acetic acid Drugs 0.000 claims abstract description 6
- 239000012362 glacial acetic acid Substances 0.000 claims abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical class CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 20
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 17
- 229940068984 polyvinyl alcohol Drugs 0.000 claims description 17
- 239000000440 bentonite Substances 0.000 claims description 16
- 229910000278 bentonite Inorganic materials 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 10
- 230000001476 alcoholic effect Effects 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 claims description 5
- 229920002581 Glucomannan Polymers 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229940046240 glucomannan Drugs 0.000 claims description 5
- 239000008236 heating water Substances 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
- 235000019394 potassium persulphate Nutrition 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000002525 ultrasonication Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims 1
- 235000009499 Vanilla fragrans Nutrition 0.000 claims 1
- 244000263375 Vanilla tahitensis Species 0.000 claims 1
- 235000012036 Vanilla tahitensis Nutrition 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 150000001299 aldehydes Chemical class 0.000 claims 1
- 229920003020 cross-linked polyethylene Polymers 0.000 claims 1
- 239000004703 cross-linked polyethylene Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 3
- 239000011120 plywood Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 10
- 239000002023 wood Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 150000005846 sugar alcohols Chemical class 0.000 description 4
- 241000219000 Populus Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004836 Glue Stick Substances 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003364 biologic glue Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- 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
- C09J105/00—Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00
- C09J105/02—Dextran; Derivatives thereof
-
- 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
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of glued board adhesive, it is related to technical field of plywood preparation, is made up of following component：It is made up of following component：Konjaku flour, vanillic aldehyde grafted chitosan, acrylate cross linked polyvinyl alcohol, glacial acetic acid, filler, water；A kind of glued board adhesive provided by the invention, not only with good bonding strength, while it is ageing-resistant, water resistance is good, can effectively extend its service life.
Description
Technical field
The invention belongs to technical field of plywood preparation, and in particular to a kind of glued board adhesive.
Background technology
Glued board is an important board kind in wood-based plate, and because 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, obtained extensively in furniture, compartment, shipbuilding, military project, packaging and other industrial departments
Using glued board is that wood single-plate is bonded together by adhesive, is then made by cold moudling, it is seen then that adhesive
There can be strong influence to the adhesion strength, service life, resistance to ag(e)ing of glued board, and existing glued board adhesive pair
The adhesion strength of wood single-plate is general, and ageing-resistant performance is poor, greatly reduces the service life of glued board.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of glued board adhesive.
The present invention is achieved by the following technical solutions：
A kind of glued board adhesive, is made up of following component by weight：Konjaku flour 60-80, vanillic aldehyde grafted chitosan
15-20, acrylate cross linked polyvinyl alcohol 25-35, glacial acetic acid 0.5-0.7, filler 12-15, water 55-60；The glued board is used
When prepared by adhesive, the mixed on low speed under low-temperature zone, ultrasonication is then carried out, subsequently the high-speed stirred under high temperature section,
The low-temperature zone is no more than 10 DEG C, and the low rotation speed is no more than 150r/min, and the high temperature section is not less than 90 DEG C, the high speed
Rotating speed is not less than 2500r/min.
Further, the konjaku flour is to purify konjaku powder, and Glucomannan content is more than 82% in konjaku flour, granularity
For 500 mesh.
Further, the vanillic aldehyde grafted chitosan preparation method is：3g chitosans and 100mL isopropanols is mutually mixed
Close, at 50 DEG C, soak 2 hours, obtain chitosan alcoholic solution, then again by 6g vanillic aldehyde be dissolved in 80mL isopropanol with
In alcohol mixed solution, stir, obtain mixed solution a, the isopropanol is 2 with ethanol mixing quality ratio:1, shell is gathered
Sugar alcohol solution presses 1 with mixed solution a:0.8 mass ratio is uniformly admixed together, and heating water bath is to 80 DEG C, then with 500r/
Min rotating speeds stir 40min, then naturally cool to room temperature, then filtered, cleaned using ethanol, then using go from
Sub- water is cleaned, and then, drying, is produced.
Further, the acrylate cross linked polyvinyl alcohol preparation method is：It is 10% by acrylate and mass fraction
Poly-vinyl alcohol solution press 1:15 mass ratios are uniformly mixed, and under 80 DEG C of water-baths, 30min is stirred with 200r/min rotating speeds, then
The potassium peroxydisulfate of acrylate quality 2% is added, 30min is stirred with 350r/min rotating speeds under 95 DEG C of water-baths, then stood
10min, it is dried, produces.
Further, the water is deionized water.
Further, the filler is nano-bentonite, and the nano-bentonite passes through the hydroxyl second that mass fraction is 10%
Acid solution, which soaks 2 hours, to be handled, and the nano-bentonite granularity is 80nm.
Further, the low-temperature zone is 6-8 DEG C, 92-95 DEG C of high temperature section.
Further, the low rotation speed is 100-120r/min, and high speed rotating speed is 2800-3000r/min.
Further, the glued board with adhesive before use, carry out suffocating treatment 30min to timber using vapor,
Then be dried to moisture content to 15%, then be coated adhesive, the temperature of the vapor is 115-120 DEG C.
The present invention has advantages below compared with prior art：The present invention has good film forming, coagulated by using konjaku flour
The characteristics such as glue, sizing, thickening, blending, its Aqueous Solution Viscosity is big, has typical pseudoplastic behavior, adhesion strength is compared with other biological glue
Glutinous agent is high, but water resistance need further to improve, and therefore, the present invention adds system in glued board is prepared with adhesive
Standby vanillic aldehyde grafted chitosan, because it has multiple active groups, a variety of chemical reactions can be carried out, can effectively be carried
Ductility of the high adhesive on wood surface, and bonding strength can be significantly improved, due to vanillic aldehyde grafted chitosan point
The presence of sub- surface active groups, enable to adhesive that there is good caking property to materials such as inorganic oxide, celluloses,
It is especially more preferable to the caking property of wood surface, meanwhile, the acrylate cross linked polyvinyl alcohol prepared by adding the present invention
Synergy, the hydrophily of common polythene alcohol can be effectively reduced, improve the water resistance of adhesive, meanwhile, it is added to
After in adhesive, hydrophilic radical can be protected well, meanwhile, hydrophobic group is exposed, vanillic aldehyde grafted chitosan
Acted synergistically with acrylate cross linked polyvinyl alcohol, the monomer shielded one by one can be formed, hydrophilic radical can be isolated, together
When cause adhesive system it is scattered more uniformly, its active group preferably can be combined with wood surface, so as to not only
Water resistance is improved, while improves bonding strength, by the addition of nano-bentonite, adhesive can be improved to a certain extent
Increasing and performance, promote adhesive solidification and improve the network structure performance that cured glue sticks agent, further, it is possible to effectively improve glue
The ageing-resistant performance of glutinous agent, so as to improve the combination property of glued board, and then improves the service life of glued board.
Embodiment
Embodiment 1
A kind of glued board adhesive, is made up of following component by weight：Konjaku flour 60, vanillic aldehyde grafted chitosan 15,
Acrylate cross linked polyvinyl alcohol 25, glacial acetic acid 0.5, filler 12, water 55；When the glued board is prepared with adhesive, in low temperature
The lower mixed on low speed of section, then carries out ultrasonication, subsequently the high-speed stirred under high temperature section, the low-temperature zone is no more than 10
DEG C, the low rotation speed is no more than 150r/min, and the high temperature section is not less than 90 DEG C, and the high speed rotating speed is not less than 2500r/
min。
Further, the konjaku flour is to purify konjaku powder, and Glucomannan content is more than 82% in konjaku flour, granularity
For 500 mesh.
Further, the vanillic aldehyde grafted chitosan preparation method is：3g chitosans and 100mL isopropanols is mutually mixed
Close, at 50 DEG C, soak 2 hours, obtain chitosan alcoholic solution, then again by 6g vanillic aldehyde be dissolved in 80mL isopropanol with
In alcohol mixed solution, stir, obtain mixed solution a, the isopropanol is 2 with ethanol mixing quality ratio:1, shell is gathered
Sugar alcohol solution presses 1 with mixed solution a:0.8 mass ratio is uniformly admixed together, and heating water bath is to 80 DEG C, then with 500r/
Min rotating speeds stir 40min, then naturally cool to room temperature, then filtered, cleaned using ethanol, then using go from
Sub- water is cleaned, and then, drying, is produced.
Further, the acrylate cross linked polyvinyl alcohol preparation method is：It is 10% by acrylate and mass fraction
Poly-vinyl alcohol solution press 1:15 mass ratios are uniformly mixed, and under 80 DEG C of water-baths, 30min is stirred with 200r/min rotating speeds, then
The potassium peroxydisulfate of acrylate quality 2% is added, 30min is stirred with 350r/min rotating speeds under 95 DEG C of water-baths, then stood
10min, it is dried, produces.
Further, the water is deionized water.
Further, the filler is nano-bentonite, and the nano-bentonite passes through the hydroxyl second that mass fraction is 10%
Acid solution, which soaks 2 hours, to be handled, and the nano-bentonite granularity is 80nm.
Further, the low-temperature zone is 6 DEG C, 92 DEG C of high temperature section.
Further, the low rotation speed is 100r/min, and high speed rotating speed is 2800r/min.
Further, the glued board with adhesive before use, carry out suffocating treatment 30min to timber using vapor,
Then be dried to moisture content to 15%, then be coated adhesive, the temperature of the vapor is 115 DEG C.
Embodiment 2
A kind of glued board adhesive, is made up of following component by weight：Konjaku flour 80, vanillic aldehyde grafted chitosan 20,
Acrylate cross linked polyvinyl alcohol 35, glacial acetic acid 0.7, filler 15, water 60；When the glued board is prepared with adhesive, in low temperature
The lower mixed on low speed of section, then carries out ultrasonication, subsequently the high-speed stirred under high temperature section, the low-temperature zone is no more than 10
DEG C, the low rotation speed is no more than 150r/min, and the high temperature section is not less than 90 DEG C, and the high speed rotating speed is not less than 2500r/
min。
Further, the konjaku flour is to purify konjaku powder, and Glucomannan content is more than 82% in konjaku flour, granularity
For 500 mesh.
Further, the vanillic aldehyde grafted chitosan preparation method is：3g chitosans and 100mL isopropanols is mutually mixed
Close, at 50 DEG C, soak 2 hours, obtain chitosan alcoholic solution, then again by 6g vanillic aldehyde be dissolved in 80mL isopropanol with
In alcohol mixed solution, stir, obtain mixed solution a, the isopropanol is 2 with ethanol mixing quality ratio:1, shell is gathered
Sugar alcohol solution presses 1 with mixed solution a:0.8 mass ratio is uniformly admixed together, and heating water bath is to 80 DEG C, then with 500r/
Min rotating speeds stir 40min, then naturally cool to room temperature, then filtered, cleaned using ethanol, then using go from
Sub- water is cleaned, and then, drying, is produced.
Further, the acrylate cross linked polyvinyl alcohol preparation method is：It is 10% by acrylate and mass fraction
Poly-vinyl alcohol solution press 1:15 mass ratios are uniformly mixed, and under 80 DEG C of water-baths, 30min is stirred with 200r/min rotating speeds, then
The potassium peroxydisulfate of acrylate quality 2% is added, 30min is stirred with 350r/min rotating speeds under 95 DEG C of water-baths, then stood
10min, it is dried, produces.
Further, the water is deionized water.
Further, the filler is nano-bentonite, and the nano-bentonite passes through the hydroxyl second that mass fraction is 10%
Acid solution, which soaks 2 hours, to be handled, and the nano-bentonite granularity is 80nm.
Further, the low-temperature zone is 8 DEG C, 95 DEG C of high temperature section.
Further, the low rotation speed is 120r/min, and high speed rotating speed is 3000r/min.
Further, the glued board with adhesive before use, carry out suffocating treatment 30min to timber using vapor,
Then be dried to moisture content to 15%, then be coated adhesive, the temperature of the vapor is 120 DEG C.
Embodiment 3
A kind of glued board adhesive, is made up of following component by weight：Konjaku flour 70, vanillic aldehyde grafted chitosan 18,
Acrylate cross linked polyvinyl alcohol 30, glacial acetic acid 0.6, filler 13, water 58；When the glued board is prepared with adhesive, in low temperature
The lower mixed on low speed of section, then carries out ultrasonication, subsequently the high-speed stirred under high temperature section, the low-temperature zone is no more than 10
DEG C, the low rotation speed is no more than 150r/min, and the high temperature section is not less than 90 DEG C, and the high speed rotating speed is not less than 2500r/
min。
Further, the konjaku flour is to purify konjaku powder, and Glucomannan content is more than 82% in konjaku flour, granularity
For 500 mesh.
Further, the vanillic aldehyde grafted chitosan preparation method is：3g chitosans and 100mL isopropanols is mutually mixed
Close, at 50 DEG C, soak 2 hours, obtain chitosan alcoholic solution, then again by 6g vanillic aldehyde be dissolved in 80mL isopropanol with
In alcohol mixed solution, stir, obtain mixed solution a, the isopropanol is 2 with ethanol mixing quality ratio:1, shell is gathered
Sugar alcohol solution presses 1 with mixed solution a:0.8 mass ratio is uniformly admixed together, and heating water bath is to 80 DEG C, then with 500r/
Min rotating speeds stir 40min, then naturally cool to room temperature, then filtered, cleaned using ethanol, then using go from
Sub- water is cleaned, and then, drying, is produced.
Further, the acrylate cross linked polyvinyl alcohol preparation method is：It is 10% by acrylate and mass fraction
Poly-vinyl alcohol solution press 1:15 mass ratios are uniformly mixed, and under 80 DEG C of water-baths, 30min is stirred with 200r/min rotating speeds, then
The potassium peroxydisulfate of acrylate quality 2% is added, 30min is stirred with 350r/min rotating speeds under 95 DEG C of water-baths, then stood
10min, it is dried, produces.
Further, the water is deionized water.
Further, the filler is nano-bentonite, and the nano-bentonite passes through the hydroxyl second that mass fraction is 10%
Acid solution, which soaks 2 hours, to be handled, and the nano-bentonite granularity is 80nm.
Further, the low-temperature zone is 7 DEG C, 93 DEG C of high temperature section.
Further, the low rotation speed is 110r/min, and high speed rotating speed is 2900r/min.
Further, the glued board with adhesive before use, carry out suffocating treatment 30min to timber using vapor,
Then be dried to moisture content to 15%, then be coated adhesive, the temperature of the vapor is 118 DEG C.
Comparative example 1：Differed only in embodiment 1 and konjaku flour is replaced with into soybean starch.
Comparative example 2：Differed only in embodiment 1 and vanillic aldehyde grafted chitosan is replaced with into common chitosan.
Comparative example 3：Differed only in embodiment 1 and acrylate cross linked polyvinyl alcohol is replaced with into common polythene alcohol.
Comparative example 4：Glued board adhesive is differed only in embodiment 1 before use, not entering water-filling steaming to wood surface
Gas suffocating treatment.
Experiment
It is prepared by glued board
Test specimen is made according to the standards of GB/T 9846.7-2004, test specimen veneer, sheeting process parameter are prepared with poplar:Test specimen
The mm of the mm of the mm of specification 300 × 300 × 9, poplar list is spread evenly across by the way of manual brushing by the adhesive of above-mentioned modulation
Plate, using the vertical texture mode assembly of routine into 5 layers of glued board, resin added 350-400 g/m2, using cold pressing forming process,
Pressure 1.0-1.5MPa, unload plate after the h of pressurize 12 at room temperature；The adhesive that embodiment is prepared with comparative example is respectively adopted to be tried
Test, before brushing adhesive, embodiment is carried out to board using poplar board and handled with method in comparative example；
Performance test is with characterizing
Water resistance test is entered according to the 24 h water absorption rates and water resisting time of 9846-2004 pairs of glued boards of national standard GB/T
Row test, when wherein water resisting time is tested, test specimen leaching is placed in the warm water of (60 ± 3) DEG C, record test specimen is from being immersed in the water
Start to the time needed for glue-line cracking；
Table 1
| Bonding strength MPa | Water resisting time d | 24h absorptivities % | |
| Embodiment 1 | 0.98 | 32.0 | 6.2 |
| Embodiment 2 | 0.96 | 31.9 | 6.5 |
| Embodiment 3 | 0.97 | 31.8 | 6.4 |
| Comparative example 1 | 0.92 | 26 | 8.8 |
| Comparative example 2 | 0.73 | 19.0 | 13.8 |
| Comparative example 3 | 0.75 | 23.2 | 10.8 |
| Comparative example 4 | 0.86 | 32.0 | 6.2 |
As can be seen from Table 1, the glued board that prepared by the present invention not only has good bonding strength with adhesive, while also has
Good water resistance.
Claims (9)
1. a kind of glued board adhesive, it is characterised in that be made up by weight of following component：Konjaku flour 60-80, vanilla
Aldehyde grafted chitosan 15-20, acrylate cross linked polyvinyl alcohol 25-35, glacial acetic acid 0.5-0.7, filler 12-15, water 55-60；
When the glued board is prepared with adhesive, the mixed on low speed under low-temperature zone, ultrasonication is then carried out, subsequently in high temperature section
Lower high-speed stirred, the low-temperature zone are no more than 10 DEG C, and the low rotation speed is no more than 150r/min, and the high temperature section is not less than 90
DEG C, the high speed rotating speed is not less than 2500r/min.
2. a kind of glued board adhesive according to claim 1, it is characterised in that the konjaku flour is purifying konjaku essence
Powder, for Glucomannan content more than 82%, granularity is 500 mesh in konjaku flour.
A kind of 3. glued board adhesive according to claim 1, it is characterised in that the vanillic aldehyde grafted chitosan system
Preparation Method is：3g chitosans and 100mL isopropanols are mutually mixed, at 50 DEG C, soaks 2 hours, obtains chitosan alcoholic solution,
Then 6g vanillic aldehyde is dissolved in 80mL isopropanol and alcohol mixed solution again, stirred, obtain mixed solution a,
The isopropanol is 2 with ethanol mixing quality ratio:1, chitosan alcoholic solution and mixed solution a are pressed 1:0.8 mass ratio is uniform
Admixed together, then heating water bath stirs 40min with 500r/min rotating speeds, then naturally cools to room temperature, then to 80 DEG C
Filtered, cleaned using ethanol, then cleaned using deionized water, then, drying, produced.
A kind of 4. glued board adhesive according to claim 1, it is characterised in that the acrylate cross linked polyethylene
Alcohol preparation method is：Acrylate and mass fraction are pressed 1 for 10% poly-vinyl alcohol solution:15 mass ratios uniformly mix,
Under 80 DEG C of water-baths, 30min is stirred with 200r/min rotating speeds, then adds the potassium peroxydisulfate of acrylate quality 2%, in 95 DEG C of water-baths
Under with 350r/min rotating speeds stir 30min, then stand 10min, be dried, produce.
5. a kind of glued board adhesive according to claim 1, it is characterised in that the water is deionized water.
A kind of 6. glued board adhesive according to claim 1, it is characterised in that the filler is nano-bentonite,
The nano-bentonite soaks 2 hours by the hydroxyacetic acid solution that mass fraction is 10% to be handled, the nano-bentonite granularity
For 80nm.
7. a kind of glued board adhesive according to claim 1, it is characterised in that the low-temperature zone is 6-8 DEG C, high temperature
92-95 DEG C of section.
8. a kind of glued board adhesive according to claim 1, it is characterised in that the low rotation speed is 100-
120r/min, high speed rotating speed are 2800-3000r/min.
9. a kind of glued board adhesive according to claim 1, it is characterised in that the glued board is used with adhesive
Before, suffocating treatment 30min is carried out to timber using vapor, then be dried to moisture content to 15%, then be coated gluing
Agent, the temperature of the vapor is 115-120 DEG C.
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| CN110606767A (en) * | 2019-10-21 | 2019-12-24 | 福建泉州市宝质混凝土有限公司 | Novel lightweight aggregate concrete and preparation process thereof |
| CN113684473A (en) * | 2021-07-26 | 2021-11-23 | 广州三孚新材料科技股份有限公司 | Chemical copper plating solution for plastics and preparation method thereof |
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| CN113684473A (en) * | 2021-07-26 | 2021-11-23 | 广州三孚新材料科技股份有限公司 | Chemical copper plating solution for plastics and preparation method thereof |
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|---|---|
| CN107446523B (en) | 2018-08-21 |
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Denomination of invention: Adhesive for plywood Effective date of registration: 20200608 Granted publication date: 20180821 Pledgee: Funan SME financing Company limited by guarantee Pledgor: FUNAN SHENGYUAN WOOD INDUSTRY Co.,Ltd. Registration number: Y2020980002859 |
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Denomination of invention: Adhesive for plywood Effective date of registration: 20220315 Granted publication date: 20180821 Pledgee: Funan SME financing Company limited by guarantee Pledgor: FUNAN SHENGYUAN WOOD INDUSTRY Co.,Ltd. Registration number: Y2022980002528 |