CN106590526A - Soybean protein adhesive for plywood and preparation method of soybean protein adhesive - Google Patents
Soybean protein adhesive for plywood and preparation method of soybean protein adhesive Download PDFInfo
- Publication number
- CN106590526A CN106590526A CN201611171651.2A CN201611171651A CN106590526A CN 106590526 A CN106590526 A CN 106590526A CN 201611171651 A CN201611171651 A CN 201611171651A CN 106590526 A CN106590526 A CN 106590526A
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- Prior art keywords
- parts
- agent
- soybean protein
- protein adhesive
- sodium
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- 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.)
- Pending
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 21
- 108010073771 Soybean Proteins Proteins 0.000 title claims abstract description 19
- 235000019710 soybean protein Nutrition 0.000 title claims abstract description 19
- 239000011120 plywood Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 19
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000011734 sodium Substances 0.000 claims abstract description 16
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 16
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 244000068988 Glycine max Species 0.000 claims abstract description 15
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 15
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 15
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 15
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims abstract description 14
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 14
- 229920002125 Sokalan® Polymers 0.000 claims abstract description 12
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 12
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 12
- 239000004584 polyacrylic acid Substances 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 210000000582 semen Anatomy 0.000 claims description 15
- 239000002738 chelating agent Substances 0.000 claims description 14
- 235000018102 proteins Nutrition 0.000 claims description 14
- 108090000623 proteins and genes Proteins 0.000 claims description 14
- 102000004169 proteins and genes Human genes 0.000 claims description 14
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 13
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 13
- 239000003963 antioxidant agent Substances 0.000 claims description 11
- 230000003078 antioxidant effect Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 244000046052 Phaseolus vulgaris Species 0.000 claims 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims 1
- 210000000481 breast Anatomy 0.000 claims 1
- 238000010668 complexation reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000008139 complexing agent Substances 0.000 abstract 1
- 239000002612 dispersion medium Substances 0.000 abstract 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 239000002023 wood Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229960004279 formaldehyde Drugs 0.000 description 3
- 235000019256 formaldehyde Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- C09J189/00—Adhesives based on proteins; Adhesives based on 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a soybean protein adhesive for plywood and a preparation method of the soybean protein adhesive. The soybean protein adhesive consists of the following components, by mass, 2-3 parts of antioxygen, 2-4 parts of cross-linking agents, 10-20 parts of dispersion media, 6-8 parts of ferric sulfate, 5-7 parts of cyclohexanone, 20-30 parts of degreased soybean albumen powder, 6-10 parts of sodium silicate, 5-7 parts of ricinoleic sodium sulfonate, 6-8 parts of sodium carbonate, 5-7 parts of polyacrylic acid, 2-4 parts of complexing agents, 1-2 parts of reinforcing agents and 1-3 parts of emulsifying agents. The reparation method is simple in technology and convenient to operate, and is suitable for popularization and application; and materials are easy to obtain, have no toxicity or harm to the environment and are free of extraneous odor.
Description
Technical field
The present invention relates to plywood technical field, in particular to a kind of soyabean protein adhesive for plywood and its system
Preparation Method.
Background technology
2010,1.536 billion cubic meter of China wood-based plate total output accounted for the 50% of world's weight, wherein glued
7139.66 ten thousand stere, 1652.28 ten thousand stere of core-board.It is wood-based plate total output, plywood yield, furniture yield, wooden
Floor yield occupies No. 1 in the world for years.
The adhesive generally adopted in Wood-based Panel Production is formaldehyde system synthetic resin, mainly Lauxite and its modified product
Product.Although through effort for many years, China's adhesive of artificial board level of production has large increase, wood-based plate and its product environmental protection
Characteristic is greatly improved, but the wood-based plate and its product (furniture, timber floor, Indoor Wooden decoration material of many enterprise's productions
Material etc.) more serious Form aldehyde release problem is remained, it is the main source of formaldehyde pollution in room air pollution.
The content of the invention
The invention provides a kind of soyabean protein adhesive for plywood and preparation method thereof, the method technique letter of the present invention
It is single, easy to operate, suitable popularization and application；Material is simple and easy to get, nontoxic to environment, free from extraneous odour.
For achieving the above object, the present invention provides following technical scheme：
A kind of soyabean protein adhesive for plywood and preparation method thereof, is made up of following mass fraction formula components：It is anti-
Oxygen agent 2-3 parts, cross-linking agent 2-4 parts, disperse medium 10-20 parts, ferric sulphate 6-8 parts, Ketohexamethylene 5-7 parts, defat soybean protein powder
20-30 parts, sodium silicate 6-10 parts, Semen Ricini alcohol sodium sulfonate 5-7 parts, sodium carbonate 6-8 parts, polyacrylic acid 5-7 parts, chelating agent 2-4
Part, reinforcing agent 1-2 parts, emulsifying agent 1-3 parts.
Further：It is made up of following mass fraction formula components：2 parts of antioxidant, 2 parts of cross-linking agent, 10 parts of disperse medium, sulfur
It is 6 parts of sour high ferro, 5 parts of Ketohexamethylene, 20 parts of defat soybean protein powder, 6 parts of sodium silicate, 5 parts of Semen Ricini alcohol sodium sulfonate, 6 parts of sodium carbonate, poly-
5 parts of acrylic acid, 2 parts of chelating agent, 1 part of reinforcing agent, 1 part of emulsifying agent.
Further：It is made up of following mass fraction formula components：2.5 parts of antioxidant, 3 parts of cross-linking agent, 15 parts of disperse medium,
7 parts of ferric sulphate, 8 parts of Ketohexamethylene, 25 parts of defat soybean protein powder, 8 parts of sodium silicate, 6 parts of Semen Ricini alcohol sodium sulfonate, 7 parts of sodium carbonate,
6 parts of polyacrylic acid, 3 parts of chelating agent, 1.5 parts of reinforcing agent, 1.5 parts of emulsifying agent.
Further：It is made up of following mass fraction formula components：3 parts of antioxidant, 4 parts of cross-linking agent, 20 parts of disperse medium, sulfur
8 parts of sour high ferro, 7 parts of Ketohexamethylene, 30 parts of defat soybean protein powder, 10 parts of sodium silicate, 7 parts of Semen Ricini alcohol sodium sulfonate, 8 parts of sodium carbonate,
7 parts of polyacrylic acid, 4 parts of chelating agent, 2 parts of reinforcing agent, 3 parts of emulsifying agent.
Further：Preparation method of the present invention has following steps：
Step one, by defat soybean protein powder, ferric sulphate, sodium silicate, Semen Ricini alcohol sodium sulfonate and sodium carbonate add disperse
In medium, stir, obtain mixture；
Chelating agent is added in the mixture obtained by step 2, step one, is stirred；
Mixed after the surplus stock in addition to reinforcing agent is added obtained by step 3, step 2；
Reinforcing agent is continuously added obtained by step 4, step 3, is stirred, obtained final product.
The invention has the beneficial effects as follows：
1st, the method process is simple of the present invention, easy to operate, suitable popularization and application；
2nd, material of the present invention is simple and easy to get, nontoxic to environment, free from extraneous odour；
3rd, the present invention has a good application prospect.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based in the present invention
Embodiment, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art, all
Belong to the scope of protection of the invention.
Embodiment one：
A kind of soyabean protein adhesive for plywood is made up of following mass fraction formula components：Antioxidant 2-3 parts, crosslinking
Agent 2-4 parts, disperse medium 10-20 parts, ferric sulphate 6-8 parts, Ketohexamethylene 5-7 parts, defat soybean protein powder 20-30 parts, sodium water glass
Glass 6-10 parts, Semen Ricini alcohol sodium sulfonate 5-7 parts, sodium carbonate 6-8 parts, polyacrylic acid 5-7 parts, chelating agent 2-4 parts, reinforcing agent 1-2 parts,
Emulsifying agent 1-3 parts.
Embodiment two：
A kind of soyabean protein adhesive for plywood is made up of following mass fraction formula components：2 parts of antioxidant, cross-linking agent
2 parts, 10 parts of disperse medium, 6 parts of ferric sulphate, 5 parts of Ketohexamethylene, 20 parts of defat soybean protein powder, 6 parts of sodium silicate, Semen Ricini alcohol sulphur
5 parts of sour sodium, 6 parts of sodium carbonate, 5 parts of polyacrylic acid, 2 parts of chelating agent, 1 part of reinforcing agent, 1 part of emulsifying agent.
Embodiment three：
A kind of soyabean protein adhesive for plywood is made up of following mass fraction formula components：2.5 parts of antioxidant, crosslinking
3 parts of agent, 15 parts of disperse medium, 7 parts of ferric sulphate, 8 parts of Ketohexamethylene, 25 parts of defat soybean protein powder, 8 parts of sodium silicate, Semen Ricini alcohol
6 parts of sodium sulfonate, 7 parts of sodium carbonate, 6 parts of polyacrylic acid, 3 parts of chelating agent, 1.5 parts of reinforcing agent, 1.5 parts of emulsifying agent.
Example IV：
A kind of soyabean protein adhesive for plywood is made up of following mass fraction formula components：3 parts of antioxidant, cross-linking agent
4 parts, 20 parts of disperse medium, 8 parts of ferric sulphate, 7 parts of Ketohexamethylene, 30 parts of defat soybean protein powder, 10 parts of sodium silicate, Semen Ricini alcohol sulphur
7 parts of sour sodium, 8 parts of sodium carbonate, 7 parts of polyacrylic acid, 4 parts of chelating agent, 2 parts of reinforcing agent, 3 parts of emulsifying agent.
Embodiment five：
A kind of preparation method preparation method of soyabean protein adhesive for plywood comprises the steps：
Step one, by defat soybean protein powder, ferric sulphate, sodium silicate, Semen Ricini alcohol sodium sulfonate and sodium carbonate add disperse
In medium, stir, obtain mixture；
Chelating agent is added in the mixture obtained by step 2, step one, is stirred；
Mixed after the surplus stock in addition to reinforcing agent is added obtained by step 3, step 2；
Reinforcing agent is continuously added obtained by step 4, step 3, is stirred, obtained final product.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that those skilled in the art should for clarity
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (5)
1. a kind of soyabean protein adhesive for plywood, it is characterised in that：It is made up of following mass fraction formula components：
Antioxidant 2-3 parts, cross-linking agent 2-4 parts, disperse medium 10-20 parts, ferric sulphate 6-8 parts, Ketohexamethylene 5-7 parts, defat bean
Egg albumen powder 20-30 parts, sodium silicate 6-10 parts, Semen Ricini alcohol sodium sulfonate 5-7 parts, sodium carbonate 6-8 parts, polyacrylic acid 5-7 parts, complexation
Agent 2-4 parts, reinforcing agent 1-2 parts, emulsifying agent 1-3 parts.
2. a kind of soyabean protein adhesive for plywood according to claim 1, it is characterised in that：By following mass fraction
Formula components are constituted：
2 parts of antioxidant, 2 parts of cross-linking agent, 10 parts of disperse medium, 6 parts of ferric sulphate, 5 parts of Ketohexamethylene, 20 parts of defat soybean protein powder,
6 parts of sodium silicate, 5 parts of Semen Ricini alcohol sodium sulfonate, 6 parts of sodium carbonate, 5 parts of polyacrylic acid, 2 parts of chelating agent, 1 part of reinforcing agent, emulsifying agent 1
Part.
3. a kind of soyabean protein adhesive for plywood according to claim 1, it is characterised in that：By following mass fraction
Formula components are constituted：
2.5 parts of antioxidant, 3 parts of cross-linking agent, 15 parts of disperse medium, 7 parts of ferric sulphate, 8 parts of Ketohexamethylene, defat soybean protein powder 25
Part, 8 parts of sodium silicate, 6 parts of Semen Ricini alcohol sodium sulfonate, 7 parts of sodium carbonate, 6 parts of polyacrylic acid, 3 parts of chelating agent, 1.5 parts of reinforcing agent, breast
1.5 parts of agent.
4. a kind of soyabean protein adhesive for plywood according to claim 1, it is characterised in that：By following mass fraction
Formula components are constituted：
3 parts of antioxidant, 4 parts of cross-linking agent, 20 parts of disperse medium, 8 parts of ferric sulphate, 7 parts of Ketohexamethylene, 30 parts of defat soybean protein powder,
10 parts of sodium silicate, 7 parts of Semen Ricini alcohol sodium sulfonate, 8 parts of sodium carbonate, 7 parts of polyacrylic acid, 4 parts of chelating agent, 2 parts of reinforcing agent, emulsifying agent
3 parts.
5. a kind of a kind of preparation method of soyabean protein adhesive for plywood according to claim 1, it is characterised in that：
Comprise the steps：
Step one, by defat soybean protein powder, ferric sulphate, sodium silicate, Semen Ricini alcohol sodium sulfonate and sodium carbonate add disperse medium
In, stir, obtain mixture；
Chelating agent is added in the mixture obtained by step 2, step one, is stirred；
Mixed after the surplus stock in addition to reinforcing agent is added obtained by step 3, step 2；
Reinforcing agent is continuously added obtained by step 4, step 3, is stirred, obtained final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611171651.2A CN106590526A (en) | 2016-12-17 | 2016-12-17 | Soybean protein adhesive for plywood and preparation method of soybean protein adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611171651.2A CN106590526A (en) | 2016-12-17 | 2016-12-17 | Soybean protein adhesive for plywood and preparation method of soybean protein adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106590526A true CN106590526A (en) | 2017-04-26 |
Family
ID=58601013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611171651.2A Pending CN106590526A (en) | 2016-12-17 | 2016-12-17 | Soybean protein adhesive for plywood and preparation method of soybean protein adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106590526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249086A (en) * | 2021-05-21 | 2021-08-13 | 南宁市磨氏林圣木业有限公司 | Mildew-proof formaldehyde-free soybean adhesive and application thereof in plywood |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093824A (en) * | 2009-12-09 | 2011-06-15 | 黄卫东 | Adhesive |
| CN102977845A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for artificial board and preparation method of adhesive |
| CN102977846A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for plywood and method for preparing same |
| CN102977847A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Soyabean protein adhesive for plywood and method for preparing same |
-
2016
- 2016-12-17 CN CN201611171651.2A patent/CN106590526A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093824A (en) * | 2009-12-09 | 2011-06-15 | 黄卫东 | Adhesive |
| CN102977845A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for artificial board and preparation method of adhesive |
| CN102977846A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Adhesive for plywood and method for preparing same |
| CN102977847A (en) * | 2012-11-22 | 2013-03-20 | 北京林业大学 | Soyabean protein adhesive for plywood and method for preparing same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113249086A (en) * | 2021-05-21 | 2021-08-13 | 南宁市磨氏林圣木业有限公司 | Mildew-proof formaldehyde-free soybean adhesive and application thereof in plywood |
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Application publication date: 20170426 |