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A kind of water-based adhesive for wooden multilayer board and preparation method thereof

A technology of water-based adhesives and multi-layer boards, applied in the direction of adhesive types, protein adhesives, non-polymer adhesive additives, etc., can solve the problem of animal glue water resistance and poor process performance, animal skin glue Water resistance, constrained wide application and other issues

Active Publication Date: 2017-09-29
安徽北极蓝天生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, animal glue has poor water resistance and process performance, which restricts its wide application in the wood industry.
[0006] In view of the problems referred to above, there is an urgent need for a water-based adhesive for wooden multilayer boards to solve the shortcoming of the water resistance of animal skin glue.

Method used

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  • A kind of water-based adhesive for wooden multilayer board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] The preparation method of animal skin glue is as follows:

[0056] (1) Skin scraping: Gently scrape off the hair on the skin with a scraper, or burn it off with a soldering iron, then spread it backwards, and then completely scrape off the grease, remaining meat, and blood clots inside;

[0057] (2) Soaking: Rinse the scraped skin with tap water first, and then soak it in high-quality quicklime water (the quicklime should be melted with tap water, the weight ratio of water to quicklime is 5:1, stir well), the weight ratio of skin to quicklime is 10:1, soaking time: 24h; soaking temperature: 20-30°C; stir and stir, the pigskin is soaked when it swells and softens;

[0058] (3) Skin soaking: Rinse the soaked skin with tap water (or hot water), then soak it in clean water, then slowly add an appropriate amount of hydrochloric acid, stir while adding, and adjust the pH value of the test liquid to be neutral (ie When the pH value is about 7), stop adding hydrochloric acid, ...

Embodiment 1

[0156] (1) Soak 13 parts by weight of A2 in 60 parts by weight of an aqueous solution (the mass ratio of D1:D2 is 8.5:1);

[0157] (2) Add A2 and aqueous solution in step (1) into a 250ml reaction bottle and heat up to 70°C;

[0158] (3) After A2 in step (2) is completely dissolved in the aqueous solution, slowly add 25 parts by weight of C3, 4 parts by weight of E1, and 3 parts by weight of F1, and stir until all the solids are melted and fused;

[0159] (4) Cool the reaction solution in step (3) to room temperature, add 0.6 parts by weight of B1, and stir evenly to obtain a water-based adhesive for wooden multilayer boards.

Embodiment 2

[0161] (1) Soak 13 parts by weight of A5 in 60 parts by weight of an aqueous solution (the mass ratio of D1:D2 is 8.5:1);

[0162] (2) Add A5 and aqueous solution in step (1) into a 250ml reaction bottle and heat up to 70°C;

[0163] (3) After A5 in step (2) is completely dissolved in the aqueous solution, slowly add 25 parts by weight of C3, 4 parts by weight of E2, and 3 parts by weight of F1, and stir until all the solids are melted and fused;

[0164] (4) Cool the reaction solution in step (3) to room temperature, add 0.6 parts by weight of sodium tetraborate B1, and stir evenly to obtain a water-based adhesive for wooden multilayer boards.

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Abstract

The invention provides a waterborne adhesive for wooden multiplayer plates, at least comprising, by weight: 10-16 parts of animal hide gel, 20-30 parts of attapulgite clay powder, 0.3-1.2 parts of sodium tetraborate, 50-70 parts of an aqueous solution, wherein the attapulgite clay powder is made by acidifying, blending, sun-curing and grinding 10-20 parts by weight of attapulgite clay and 10-15 parts by weight of clay powder; the aqueous solution is one or more of water and methanol mixed solution and water and ethanol mixed solution; the waterborne adhesive for wooden multilayer plates provided herein has the advantages of no pollutant, no three wastes, no irrigating odor, no toxicity, ease of construction, high adhesion, high flame retardancy, high weatherability and aging resistance, is high in water resistance, prevents the potential formaldehyde hazard with common adhesives, and is a nontoxic environment-friendly adhesive.

Description

technical field [0001] The invention belongs to a water-based adhesive for wooden multilayer boards and a preparation method thereof. More specifically, the invention relates to water-based adhesives for wooden blockboards, multi-layer plywood, density boards, and particle boards and a preparation method thereof. Background technique [0002] At present, environmentally friendly binders are increasingly occupying an important position in production. First of all, the country's environmental protection laws and regulations are more perfect; secondly, with the development of science and technology, many high-quality, high-performance binders have appeared, and their materials have a wide range of sources and are easy to prepare, which has become a research hotspot and another rising trend in the market. The profit point has gradually gained more favor in the adhesive market. Animal glue is a natural compound with low cost, good water solubility, non-toxic and harmless, and do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
CPCC08K2201/003C08K2201/014C08L2205/025C09J11/04C09J11/06C09J189/00C08L89/00C08K13/06C08K9/02C08K3/346C08K2003/387C08K5/0091
Inventor 叶佐梁张恩光叶佐钲
Owner 安徽北极蓝天生物科技有限公司