CN115322728B - High-strength boiling water-resistant bi-component jigsaw puzzle glue and preparation method and application thereof - Google Patents
High-strength boiling water-resistant bi-component jigsaw puzzle glue and preparation method and application thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000003292 glue Substances 0.000 title claims abstract description 39
- 238000009835 boiling Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000839 emulsion Substances 0.000 claims abstract description 65
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 36
- 239000002023 wood Substances 0.000 claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 18
- 239000013530 defoamer Substances 0.000 claims abstract description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000009775 high-speed stirring Methods 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 abstract description 4
- 229920001038 ethylene copolymer Polymers 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 40
- 229920002451 polyvinyl alcohol Polymers 0.000 description 40
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 40
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 21
- 239000000853 adhesive Substances 0.000 description 18
- 230000001070 adhesive effect Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 9
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000012948 isocyanate Substances 0.000 description 8
- 150000002513 isocyanates Chemical class 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000002270 dispersing agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004816 latex Substances 0.000 description 4
- 229920000126 latex Polymers 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 239000003899 bactericide agent Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- SMNNDVUKAKPGDD-UHFFFAOYSA-N 2-butylbenzoic acid Chemical compound CCCCC1=CC=CC=C1C(O)=O SMNNDVUKAKPGDD-UHFFFAOYSA-N 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- 241000353097 Molva molva Species 0.000 description 2
- 108010073771 Soybean Proteins Proteins 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003348 petrochemical agent Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 240000005020 Acaciella glauca Species 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 241000565391 Fraxinus mandshurica Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000007718 adhesive strength test Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 235000003499 redwood Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005303 weighing Methods 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The application discloses a high-strength boiling water resistant bi-component jigsaw glue, a preparation method and application thereof, wherein the high-strength boiling water resistant bi-component jigsaw glue comprises a main agent and a curing agent, and the main agent comprises the following raw materials in percentage by mass: 14.6 to 17.8 percent of water, 30 to 50 percent of modified VAE emulsion, 15 to 22 percent of PVA solution, 20 to 30 percent of filler and 0.2 to 0.4 percent of defoamer, wherein the modified VAE emulsion comprises modified VAE emulsion A and modified VAE emulsion B, the particle size range of the modified VAE emulsion A is 0.1 to 0.3 mu m, and the particle size range of the modified VAE emulsion B is 0.8 to 1 mu m. Two vinyl acetate-ethylene copolymer emulsions with different particle sizes are adopted, and the two emulsions are synergistic to more uniformly permeate into the wood, so that the bonding strength is improved, the calcium carbonate is partially replaced by the hydroxyl nano silicon dioxide, and the boiling water resistance of the jigsaw is improved.
Description
Technical Field
The application relates to a high-strength boiling water resistant bi-component jigsaw puzzle, and a preparation method and application thereof, and belongs to the technical field of building materials.
Background
Formaldehyde is a relatively high toxic substance, and is located at the 2 nd position on a preferential control list of toxic chemicals in China. The formaldehyde adhesive and its products can release formaldehyde and other harmful matters during production and use, which pollute the air in workshops and rooms and harm the health of people. With the increasing awareness of people on indoor formaldehyde hazard, the worldwide requirements on the formaldehyde release of artificial boards are also becoming more and more stringent, and in order to provide a healthy and nontoxic indoor environment for consumers, the market is actively attempting to use formaldehyde-free adhesives.
In the middle 60 s of the last century, formaldehyde hazards have been noted, and mainly polyvinyl acetate emulsion (white latex) adhesives, water-based vinyl polyurethane adhesives (EPI) and soy protein-based adhesives, which are used in the wood industry to date, have been widely known. The white latex has poor water resistance and low temperature resistance, and is mainly applied to the scenes with lower requirements such as carpentry pressing plates. The soybean protein-based adhesive has poor water resistance, low strength and easy mildew, and is mainly applied to the field of plywood. Meanwhile, part of the white latex and the soybean gum still contain formaldehyde, and the white latex and the soybean gum are not truly environment-friendly and nontoxic. EPI glue is a true zero formaldehyde addition and is widely applied to jointed boards of integrated materials, furniture and the like. The jigsaw glue is an adhesive for splicing wood products such as integrated materials and the like. Along with the rapid development of urban building and decoration industry in China, the requirements of people on the application of the laminated wood glue are continuously refined in recent years, the glue is required to be cheaper and simpler in price and operation, the soft and hard wood in the domestic market can pass LY/T1601-2011 standard in the traditional Chinese markets, but the glue passes the standard in the domestic market of materials such as fraxinus mandshurica, beech, bamboo chips and the like, or the glue is high in 15-20 yuan/kg, and meanwhile, the problems of short active period, high viscosity, difficult brushing and the like of the glue can occur in the operation process, so the EPI jigsaw with low price, long active period and capability of meeting the repeated boiling water boiling of LY/T1601-2011 has important significance.
Application number 201110007246.8 discloses a high strength board glue, its main component includes: 30-40% of EVA emulsion (industrial grade), 15-20% of carboxyl butylbenzene emulsion, 15-30% of heavy calcium carbonate, 0.04-0.07% of defoamer, 15-20% of PVA, 20-30% of water, 0.06-0.12% of dispersant, 0.1-0.2% of plasticizer, 0.08-0.12% of wetting agent and 0.04-0.07% of bactericide. The invention has high adhesive strength, excellent heat resistance and water resistance, low viscosity, easy brushing, long adaptation period, fast curing speed and low cost. The jigsaw glue prepared by the method adopts the butylbenzene emulsion as an auxiliary base material, is compounded with the curing agent MDI for use, has high price, is not environment-friendly, and is easy to delaminate.
Application number 201210452661.9 discloses a high-strength two-component laminating adhesive and a preparation method thereof, and mainly comprises 40-60% of vinyl acetate emulsion, 2-4% of polyvinyl alcohol, 1-5% of functional monomer, 0-1.5% of plasticizer, 15-25% of inorganic filler, 0.05-0.2% of dispersing agent, 0.05-0.2% of defoaming agent, 0.05-0.2% of bactericide, 5-30% of deionized water and PAPI as curing agent. The invention does not contain organic solvent, and has high strength and good water resistance. The invention adopts vinyl acetate emulsion as a matrix and PAPI as a curing agent, has high cost and is not suitable for commercial use.
Application number 201710127663.3 discloses a high-strength laminated wood splice glue, which mainly comprises 25-35% of vinyl chloride emulsion, 10-20% of carboxyl butylbenzene emulsion, 3-8% of EVA emulsion, 15-25% of heavy calcium carbonate, 0.1-0.3% of defoamer and 20-30% of PVOH aqueous solution. 0.1 to 0.3 percent of dispersing agent, 3 to 5 percent of film forming auxiliary agent, 0.3 to 0.5 percent of wetting agent and 0.1 to 0.3 percent of bactericide. Aiming at the splicing of high-grade hard redwood furniture boards, the invention has the advantages of easy brushing, long adaptation period, high curing speed, convenient and efficient construction, low cost and environmental protection. The invention mainly meets the I type and II type standard of the jigsaw glue, namely the compression shear strength under hot water immersion, does not meet the index of boiling water resistance, and has narrower application range.
At present, polyvinyl acetate emulsion, styrene-butadiene emulsion, styrene-acrylic emulsion and the like are commonly used as matrixes in the market, and polyvinyl alcohol is used as a protective colloid, so that the prepared jigsaw glue has the problems of high price, short opening time, no boiling water resistance and the like.
Disclosure of Invention
The application aims at the problems of short opening time, poor boiling water resistance and high price of the EPI bi-component jointed board adhesive, the PVA with good water resistance is taken as a protective colloid, the calcium carbonate and the hydroxyl nano silicon dioxide are taken as fillers, the crude polymeric MDI is taken as a curing agent, and the prepared bi-component jointed board adhesive is nontoxic, odorless, long in active period, high in bonding strength and good in boiling water resistance, can be widely applied to bonding of solid wood jointed boards, integrated materials, finger joints and the like, and bonding of solid wood furniture and hard wood, veneer and wood.
According to one aspect of the application, the high-strength boiling water resistant bi-component jigsaw puzzle glue comprises a main agent and a curing agent, wherein the main agent comprises the following raw materials in percentage by mass: 14.6 to 17.8 percent of water, 30 to 50 percent of modified VAE emulsion, 15 to 22 percent of PVA solution, 20 to 30 percent of filler and 0.2 to 0.4 percent of defoamer;
the modified VAE emulsion comprises a modified VAE emulsion A and a modified VAE emulsion B, wherein the particle size range of the modified VAE emulsion A is 0.1-0.3 mu m, and the particle size range of the modified VAE emulsion B is 0.8-1 mu m.
Optionally, the modified VAE emulsion a and the modified VAE emulsion B are independently selected from one of selanics 149, selanics 149HV, selanics 1426, selanics 1476, and selanics 1466.
Optionally, the water is deionized water.
Optionally, the filler comprises calcium carbonate and hydroxyl nano-silica, and the mass ratio of the calcium carbonate to the hydroxyl nano-silica is 1 (0.3-3).
Optionally, the mass ratio of the calcium carbonate to the hydroxyl nanosilica is selected from any two values or a range of values between the two values of 1:0.3, 1:0.5, 1:1, 1:2, 1:3.
Optionally, the calcium carbonate is heavy calcium carbonate with 600 mesh mass fraction of > 99%.
Alternatively, the PVA is selected from the type 1799 or 2499 of chinese petrochemicals.
Alternatively, the curing agent is a polymeric MDI of a type selected from Desmodur44V20L (bayer) or PM200 (smoke counter-wamorin).
Optionally, the mass ratio of the main agent to the curing agent is 100: (8-10).
Optionally, the mass ratio of the auxiliary agent to the curing agent is selected from any value or a range of values between the two values of 100:8, 100:9 and 100:10.
Optionally, the defoamer is an organosilicon.
According to another aspect of the present application, a preparation method of a jigsaw puzzle is provided, which specifically includes the following steps:
a) Stirring an aqueous solution containing PVA solution, modified VAE emulsion, filler and defoamer to obtain a main agent;
b) Mixing the main agent prepared in the step a) with a curing agent to obtain the jigsaw puzzle;
wherein the modified VAE emulsion comprises a modified VAE emulsion a and a modified VAE emulsion B.
Optionally, in step a), the preparation method of the PVA solution comprises: and adding PVA material into water in sections, wherein the section interval is 5-10 min, and dissolving after all the PVA material is added to obtain PVA solution. The PVA material is added into water for multiple times, and if the PVA material is added at one time or the adding speed is too high, PVA gel can be caused and cannot be used.
Optionally, the dissolving includes cold dissolving and hot melting performed sequentially.
Optionally, the cold dissolution temperature is 20-30 ℃, and the cold dissolution time is 20-40 min.
Optionally, the temperature of the hot melting is 85-95 ℃, and the time of the hot melting is 1-3 h.
Optionally, in step a), the stirring is performed in a high-speed stirrer, the stirring blade of which is a dispersion disk with a diameter of 60 mm.
Optionally, the stirring includes the first section high-speed stirring and the second section low-speed stirring that go on in proper order, and the purpose through the segmentation stirring is in order to avoid whole high-speed stirring energy consumption to be high, contains certain heat in the solution after the stirring finishes, causes the performance change of main part, and if whole low-speed stirring still can have the uneven problem of dispersion, consequently set up to high-speed stirring earlier and then low-speed stirring.
Optionally, the rotating speed of the one-section high-speed stirring is 800-1000 r/min, and the time of the one-section high-speed stirring is 40-60 min.
Optionally, the rotating speed of the two-stage low-speed stirring is 300-400 r/min, and the time of the two-stage low-speed stirring is 1-2 h.
Optionally, the PVA material is selected from the group of 1799 or 2499 types of chinese petrochemicals.
Optionally, the concentration of the PVA solution is 10wt% to 15wt%.
Optionally, the particle sizes of the modified VAE emulsion A and the modified VAE emulsion B are different, the mass ratio of the modified VAE emulsion A to the modified VAE emulsion B is 1 (0.3-3), and the two modified VAE emulsions with different particle sizes are added to make the two modified VAE emulsions synergistically act and penetrate into the wood more uniformly, so that the purpose of improving the bonding strength is achieved.
Optionally, in the step b), the mass fraction of each raw material in the main agent is as follows: 14.6 to 17.8 percent of water, 30 to 50 percent of modified VAE emulsion, 15 to 22 percent of PVA solution, 20 to 30 percent of filler and 0.2 to 0.4 percent of defoamer.
In the present application, "modified VAE emulsion" refers to a modified vinyl acetate-ethylene copolymer emulsion;
"PVA solution" refers to a polyvinyl alcohol solution;
"polymeric MDI" refers to a mixture of isocyanates and diisocyanates containing a certain amount of higher functionality.
As a specific embodiment, the method comprises the following steps:
and (1) slowly adding the PVA material into deionized water for multiple times, and performing cold dissolution and then hot dissolution to obtain a PVA solution with a certain concentration.
And (2) respectively weighing a certain amount of deionized water, VAE emulsion with different particle sizes, calcium carbonate, hydroxyl modified nano silicon dioxide, PVA solution and a proper amount of defoaming agent in a high-speed dispersing machine.
And (3) stirring the mixed solution obtained in the step (2) at a high speed, and stirring at a low speed for a period of time to obtain the main agent of the jigsaw puzzle.
And (4) testing the main agent and the curing agent of the jigsaw glue according to the proportion of 100:8 to 100:10 for the active period, normal compression shear strength and repeated boiling water boiling strength.
According to yet another aspect of the present application, there is provided the use of a jigsaw puzzle in the field of wood preparation.
The beneficial effects that this application can produce include:
1) The jointed board adhesive provided by the application adopts the specially modified vinyl acetate-ethylene copolymer emulsion, so that the reaction speed of the main agent and the curing agent can be slowed down, the active period can be prolonged, and the price can be reduced;
2) The splice glue provided by the application adopts two vinyl acetate-ethylene copolymer emulsions with different particle sizes, and the two emulsions are synergistic, so that the splice glue can penetrate into wood more uniformly, and the purpose of improving the bonding strength is achieved;
3) The jigsaw glue provided by the application adopts the PVA with good water resistance of 99 type as the protective colloid, calcium carbonate as the filler, and the hydroxyl nano silicon dioxide is used for partially replacing the calcium carbonate, so that the purpose of improving the boiling water resistance of the jigsaw glue is achieved;
4) The polymeric MDI with the cheapest market price is selected as the curing agent, so that the use cost of the bi-component splice plate is greatly reduced on the premise of not reducing the quality of the splice plate;
5) According to the preparation method of the jigsaw glue, the PVA material is added, dissolved and stirred to optimize, so that the quality of the jigsaw glue can be improved, and the production energy consumption can be reduced.
Drawings
Fig. 1 is a state diagram of the jigsaw 1 of the embodiment 1 and the jigsaw 3 of the comparative embodiment 1 after an active period of 1h, wherein a is a schematic diagram of the jigsaw 1, and b is a schematic diagram of the jigsaw 3;
fig. 2 is a schematic diagram of adhesive strength test of the jigsaw 1 of the embodiment 1 and the jigsaw 3 of the comparative embodiment 1, wherein a is a schematic diagram of the jigsaw 1, and b is a schematic diagram of the jigsaw 3;
fig. 3 is a schematic diagram showing the adhesion of wood blocks after repeated water boiling of the jigsaw 1 of the embodiment 1 and the jigsaw 3 of the comparative embodiment 1, wherein a is a schematic diagram of the jigsaw 1, and b is a schematic diagram of the jigsaw 3.
Detailed Description
The present application is described in detail below with reference to examples, but the present application is not limited to these examples.
Unless otherwise indicated, all starting materials in the examples of this application were purchased commercially,
wherein the type of VAE is selanics 149, 149HV, 1426, 1476, 1466;
PVA is of the type 1799 and 2499 of Chinese petrochemical industry;
the hydroxyl nano silicon dioxide is manufactured by Zhejiang Tianshi manufacturers;
the polymeric MDI is selected from Desmodur44V20L (bayer), PM200 (smoke counter vanity).
Example 1
1) PVA solution with 15% concentration was prepared: 15g of PVA powder is added into 85g of deionized water in sections, wherein the interval between each section is 8min, the PVA powder is added into the deionized water for three times, after all the PVA powder is added, leng Rong min is carried out, and the PVA powder is dissolved for 2h by heating, so as to obtain a PVA solution with uniform dispersion;
2) Preparing a main agent: 20g of PVA solution, 30g of Seranis 149 type VAE emulsion, 10g of Seranis 1426, 20g of heavy calcium carbonate, 10g of hydroxyl nano silicon dioxide and 0.3g of organosilicon defoamer are added into 9.7g of ionized water, and the mixture is stirred for 50min at a rotating speed of 900r/min and then stirred for 1.5h at a rotating speed of 350r/min in a high-speed dispersing agent to obtain a main agent.
3) Preparing the plate splicing glue: 3g of Bayer polymeric MDI and 30g of main agent are uniformly mixed to obtain the jigsaw 1.
The active period, the bonding strength and the repeated boiling water strength of the jigsaw 1 are respectively tested according to the test method in the standard LY/T1061-2011 water-based polymer isocyanate wood adhesive and the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive. The result shows that the activity period of the jigsaw glue 1 is more than 2 hours, the bonding strength is more than 11MPa, and the compression shearing strength is more than 6MPa after repeated boiling.
Example 2
1) PVA solution with concentration of 10% was prepared: 10g of PVA powder is added into 90g of deionized water in sections, wherein the interval between each section is 8min, the PVA powder is added into the deionized water for three times, after all the PVA powder is added, leng Rong min is carried out, and the PVA powder is dissolved for 2h by heating, so as to obtain a PVA solution with uniform dispersion;
2) Preparing a main agent: 22g of PVA solution, 20g of Seranis 149HV type VAE emulsion, 20g of Seranis 1476, 20g of heavy calcium carbonate, 10g of hydroxyl nano silicon dioxide and 0.2g of organosilicon defoamer are added into 7.7g of ionized water, and the mixture is stirred for 50min at a speed of 900r/min and then stirred for 1.5h at a speed of 350r/min in a high-speed dispersing agent, so that the main agent is obtained.
3) Preparing the plate splicing glue: and uniformly mixing 2.4g of Bayer polymeric MDI and 30g of main agent to obtain the jigsaw puzzle glue 2.
The active period, the bonding strength and the repeated boiling strength of the jigsaw 1 are respectively tested according to the middle-level test method of the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive. The result shows that the activity period of the jigsaw glue 1 is more than 2 hours, the bonding strength is more than 11MPa, and the compression shearing strength is more than 6MPa after repeated boiling.
Comparative example 1
Comparative example 1 was prepared in the same manner as in example 1 except that only one modified VAE emulsion (VAE emulsion type 149 of soranide) was added to prepare a panel gum 3.
The active period, the bonding strength and the repeated boiling strength of the jigsaw 3 are respectively tested according to the method in the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive and the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive. The result shows that the activity period of the jigsaw glue 2 is 1h, the bonding strength is 10MPa, and the compression shear strength is 4.3MPa after repeated boiling.
Comparative example 2
Comparative example 2 was prepared in the same manner as in example 1 except that a modified VAE emulsion (VAE emulsion type 1426, soranide) was added to prepare a panel gum 4.
The active period, the bonding strength and the repeated boiling strength of the jigsaw 4 are respectively tested according to the method in the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive and the standard LY/T1601-2011 water-based polymer isocyanate wood adhesive. The result shows that the activity period of the jigsaw glue 2 is less than 30min, the bonding strength is 10MPa, and the compression shear strength after repeated boiling is less than 5.9MPa.
As shown in figure 1, panel 1 was still a flowable viscous liquid after 2 hours of observation, and as shown in figure 1, panel 3 was gelled.
According to the graph a of fig. 2, the block 1 of the jigsaw puzzle is in a destroyed state after the bonding strength test, and according to the graph b of fig. 2, the block 3 of the jigsaw puzzle is in a degummed state after the bonding strength test.
After repeated boiling, the wood blocks of the plate-bonding glue 1 are still well bonded according to the figure a of fig. 3, and after repeated boiling, the wood blocks of the plate-bonding glue 3 are degummed according to the figure b of fig. 3.
The foregoing description is only a few examples of the present application and is not intended to limit the present application in any way, and although the present application is disclosed in the preferred examples, it is not intended to limit the present application, and any person skilled in the art may make some changes or modifications to the disclosed technology without departing from the scope of the technical solution of the present application, and the technical solution is equivalent to the equivalent embodiments.
Claims (15)
1. A high-strength boiling water resistant bi-component jigsaw puzzle glue is characterized by comprising a main agent and a curing agent,
the main agent consists of the following raw materials in percentage by mass: 14.6-17.8% of water, 30-50% of modified VAE emulsion, 15-22% of PVA solution, 20-30% of filler and 0.2-0.4% of defoamer;
wherein the modified VAE emulsion comprises a modified VAE emulsion A and a modified VAE emulsion B,
the particle size range of the modified VAE emulsion A is 0.1-0.3 mu m,
the particle size range of the modified VAE emulsion B is 0.8-1 mu m,
the filler comprises calcium carbonate and hydroxyl nano-silica,
PVA materials in the PVA solution are selected from 1799 or 2499 of Chinese petrochemical industry;
the modified VAE emulsion A is selected from the group consisting of selanics 149 and selanics 149HV;
the modified VAE emulsion B is selected from the group consisting of celebration 1426 and celebration 1476;
the mass ratio of the modified VAE emulsion A to the modified VAE emulsion B is 1 (0.3-3);
the curing agent is polymeric MDI, and the type of the polymeric MDI is Desmodur44V20L or PM200;
the mass ratio of the main agent to the curing agent is 100: (8-10).
2. The high-strength boiling water-resistant two-component jigsaw puzzle glue according to claim 1, wherein the mass ratio of the calcium carbonate to the hydroxyl nano silicon dioxide is 1 (0.3-3).
3. The high strength boiling water resistant two component panel glue of claim 1, wherein the calcium carbonate is heavy calcium carbonate with 600 mesh mass fraction > 99%.
4. The high strength boiling water resistant two component panel glue of claim 1, wherein the defoamer is an organosilicon.
5. A method of preparing a high strength boiling water resistant bi-component glue as claimed in any one of claims 1 to 4 comprising the steps of:
a) Stirring an aqueous solution containing PVA solution, modified VAE emulsion, filler and defoamer to obtain a main agent;
b) Mixing the main agent prepared in the step a) with a curing agent to obtain the jigsaw puzzle;
wherein the modified VAE emulsion comprises a modified VAE emulsion a and a modified VAE emulsion B.
6. The method according to claim 5, wherein in the step a), the PVA solution is prepared by: and adding PVA materials into water in sections, wherein the section interval is 5-10 min, and dissolving after all the PVA materials are added to obtain PVA solution.
7. The method of claim 6, wherein the dissolving comprises cold dissolving and hot dissolving performed sequentially.
8. The preparation method according to claim 7, wherein the cold dissolution temperature is 20-30 ℃ and the cold dissolution time is 20-40 min.
9. The method according to claim 7, wherein the temperature of the heat-melting is 85-95 ℃ and the heat-melting time is 1-3 hours.
10. The process according to claim 5, wherein in step a) the stirring is carried out in a high-speed stirrer, the stirring blade of which is a dispersion disk having a diameter of 60 mm.
11. The method according to claim 5, wherein in the step a), the stirring includes a first-stage high-speed stirring and a second-stage low-speed stirring performed sequentially.
12. The method according to claim 11, wherein the rotation speed of the one-stage high-speed stirring is 800-1000 r/min, and the time of the one-stage high-speed stirring is 40-60 min.
13. The preparation method of claim 11, wherein the rotational speed of the two-stage low-speed stirring is 300-400 r/min, and the time of the two-stage low-speed stirring is 1-2 h.
14. The method according to claim 5, wherein the concentration of the PVA solution is 10wt% to 15wt%.
15. Use of a high strength boiling water resistant bi-component glue according to any one of claims 1 to 4 or prepared according to the method of any one of claims 5 to 14 in the field of wood preparation.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925081A (en) * | 2012-11-12 | 2013-02-13 | 抚顺哥俩好化学有限公司 | High-strength double-component laminating glue, and preparation method thereof |
| CN106867427A (en) * | 2017-03-30 | 2017-06-20 | 北京市创新玮地科贸有限公司 | A kind of integrated material wood-splicing adhesive and preparation method |
| CN111662657A (en) * | 2020-07-01 | 2020-09-15 | 顶立新材料科技有限公司 | Long-activation-period slow-drying plate splicing adhesive and preparation method thereof |
| CN111704874A (en) * | 2020-07-01 | 2020-09-25 | 顶立新材料科技有限公司 | Long-life low-temperature-resistant two-component water-based plate splicing adhesive |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925081A (en) * | 2012-11-12 | 2013-02-13 | 抚顺哥俩好化学有限公司 | High-strength double-component laminating glue, and preparation method thereof |
| CN106867427A (en) * | 2017-03-30 | 2017-06-20 | 北京市创新玮地科贸有限公司 | A kind of integrated material wood-splicing adhesive and preparation method |
| CN111662657A (en) * | 2020-07-01 | 2020-09-15 | 顶立新材料科技有限公司 | Long-activation-period slow-drying plate splicing adhesive and preparation method thereof |
| CN111704874A (en) * | 2020-07-01 | 2020-09-25 | 顶立新材料科技有限公司 | Long-life low-temperature-resistant two-component water-based plate splicing adhesive |
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