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Integrated material wood-splicing adhesive and preparation method thereof

A technology for panel glue and glulam, applied in the direction of monocarboxylate copolymer adhesives, adhesive types, etc., can solve the problems of heat resistance, water resistance, poor heat resistance, water resistance, etc., and achieve improvement Boiling water resistance, improvement of flexibility, effect of improving flexibility

Active Publication Date: 2009-10-28
顶立新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the early 1950s, the products used in wood bonding in my country were mainly bean glue, casein and other protein adhesives. The adhesive strength of these adhesives was not high, and their water resistance and heat resistance were also poor, which hindered the development of wood industry bonding technology. develop
The main disadvantages of trialdehyde glue are: high formaldehyde release content, serious pollution of the air environment, and serious harm to people and lives
Its main disadvantages are that after curing, the adhesive film layer is relatively soft, has poor antifreeze performance, is not resistant to water, and is not resistant to heat. Generally, it is easy to cause problems such as degumming and cracking when spliced ​​with white glue.

Method used

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  • Integrated material wood-splicing adhesive and preparation method thereof
  • Integrated material wood-splicing adhesive and preparation method thereof
  • Integrated material wood-splicing adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A glulam glue is prepared from 100 parts by weight of a main agent and 13 parts by weight of a crosslinking agent-modified polyisocyanate, and the main agent and the crosslinking agent are packaged separately. The main ingredient is prepared from the following raw materials in weight percentage:

[0043] Polyvinyl Alcohol 3%,

[0044] Vinyl acetate 38.92%,

[0045] Acrylic 1%,

[0046] Butyl Acrylate 5%,

[0047] Methacrylic acid 1%,

[0048] Hydroxyethyl Acrylate 0.9%,

[0049] Emulsifier OP-10 1%,

[0050] Sodium Lauryl Sulfate 1%,

[0051] Ammonium persulfate 0.08%,

[0052] Anhydrous sodium acetate 0.1%,

[0053] Deionized Water 48%.

[0054] The modified polyisocyanate adopts DESMODUR44V20L brand product produced by Bayer Company, which is a compound based on diphenylmethane diisocyanate, with an NCO weight percentage ≥ 30%, and a viscosity of 170-270mpas at 25°C. The polyvinyl alcohol adopts the 2088 brand product produced by Sichuan Vinylon Company, the...

Embodiment 2

[0063] A glulam glue is prepared from 100 parts by weight of a main agent and 17 parts by weight of a crosslinking agent-modified polyisocyanate, and the main agent and the crosslinking agent are packaged separately. The main ingredient is prepared from the following raw materials in weight percent:

[0064] Polyvinyl Alcohol 5%,

[0065] Vinyl acetate 21.4%,

[0066] Acrylic 3%,

[0067] Butyl Acrylate 10%,

[0068] Methacrylic acid 3%,

[0069] Hydroxyethyl Acrylate 1.1%,

[0070] Emulsifier OP-10 2%,

[0071] Sodium Lauryl Sulfate 2%,

[0072] Ammonium persulfate 0.2%,

[0073] Anhydrous sodium acetate 0.3%,

[0074] Deionized water 52%.

[0075] The modified polyisocyanate adopts DESMODUR44V20L brand product produced by Bayer Company, which is a compound based on diphenylmethane diisocyanate, with an NCO weight percentage ≥ 30%, and a viscosity of 170-270mpas at 25°C. The polyvinyl alcohol adopts the 1788 brand product produced by Sichuan Vinylon Company, the deg...

Embodiment 3

[0084] A glulam glue is prepared from 100 parts by weight of a main agent and 15 parts by weight of a crosslinking agent-modified polyisocyanate, and the main agent and the crosslinking agent are packaged separately. The main ingredient is prepared from the following raw materials in weight percent:

[0085] Polyvinyl Alcohol 4%,

[0086] Vinyl acetate 30.2%,

[0087] Acrylic 2%,

[0088] Butyl Acrylate 7.5%,

[0089] Methacrylic acid 2%,

[0090] Hydroxyethyl Acrylate 1%,

[0091] Emulsifier OP-10 1.5%,

[0092] Sodium Lauryl Sulfate 1.5%,

[0093] Ammonium persulfate 0.1%,

[0094] Anhydrous sodium acetate 0.2%,

[0095] Deionized water 50%.

[0096] The modified polyisocyanate adopts DESMODUR44V20L brand product produced by Bayer Company, which is a compound based on diphenylmethane diisocyanate, with an NCO weight percentage ≥ 30%, and a viscosity of 170-270mpas at 25°C. The polyvinyl alcohol adopts the 1788 brand product produced by Sichuan Vinylon Company, the ...

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Abstract

The invention provides an integrated material wood-splicing adhesive, which is characterized in that the integrated material wood-splicing adhesive is prepared by the following components by weight portions: 100 weight portions of main agent and 13-17 weight portions of cross linking agent modified polyisocyanate, wherein the main agent is prepared by the following raw materials by weight: 3-5% of polyvinyl alcohol, 21.4-38.92% of vinyl acetate, 1-3% of crylic acid, 5-10% of butyl acrylate, 1-3% of methacrylic acid, 0.9-1.1% of 2-hydroxyethyl acrylate, 1-2% of emulsifier OP-10, 1-2% of sodium dodecyl sulfate, 0.08-0.2% of ammonium persulfate, 0.1-0.3% of pH regulator and 48-52% of deionized water. The integrated material wood-splicing adhesive has the advantages of high adhesion strength, good water resistance, and no organic solvent and formaldehyde.

Description

technical field [0001] The invention provides a glulam glue and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] my country's existing forest resources are about 15,894 hectares, the stock of living trees is 12.5 billion cubic meters, and the per capita share is only 1 / 5-1 / 8 of the world's average level. Precious woods are particularly prominent. Most rely on imports. Glulam is a new type of molding material that makes full use of materials of various sizes or waste wood to make a certain width or thickness and glues them together. The performance of glulam is better than that of natural wood, with uniform material and beautiful appearance. It is widely used in wood products, furniture manufacturing, decoration and housing construction industries. The popularization and application of glulam panel materials is to make full use of limited timber resources and turn waste into treasure. It is welcomed by users and has...

Claims

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Application Information

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IPC IPC(8): C09J131/04
Inventor 陆林森
Owner 顶立新材料科技股份有限公司
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