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Water-based polymer isocyanate wood adhesive and preparation method thereof

A wood adhesive, water-based polymer technology, used in adhesives, polyurea/polyurethane adhesives, adhesive types, etc., can solve problems affecting the environment and users' health, improve compatibility, and enhance wet bonding Strength and water and weather resistance and aging resistance, the effect of prolonging the pot life

Active Publication Date: 2017-10-24
桂林新美环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are many types of existing wood adhesives, but urea-formaldehyde resin glue, phenolic resin glue and melamine-formaldehyde glue are mainly used in production. Since the main raw material of this type of glue is formaldehyde, therefore, in the process of production and use for a long period of time It will continuously release free formaldehyde, which will affect the environment and the health of users

Method used

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  • Water-based polymer isocyanate wood adhesive and preparation method thereof
  • Water-based polymer isocyanate wood adhesive and preparation method thereof
  • Water-based polymer isocyanate wood adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. Adhesive formula:

[0052] Main ingredient: polyvinyl alcohol, 10 parts;

[0053] Composite polyol (made by mixing soybean oil polyol, castor oil and polyol benzoate in a weight ratio of 10:10:80), 6 parts;

[0054] 22 parts of silica sol;

[0055] Filler (titanium dioxide), 12 parts;

[0056] water, 50 parts;

[0057] Surfactant (sodium dodecylbenzenesulfonate), 0.1 part;

[0058] Defoamer (n-butanol), 0.1 part;

[0059] Preservative (isothiazolinone), 0.1 part;

[0060]Cross-linking agent: (polyphenyl polymethylene polyisocyanate), its consumption is 15% of the main agent.

[0061] 2. Preparation method:

[0062] 1) Weigh each component according to the formula, and set aside;

[0063] 2) First add water to the reaction kettle with a heating stirrer, add polyvinyl alcohol and defoamer, heat up to 93°C and keep warm until the polyvinyl alcohol is completely dissolved, then cool the system down to 70°C, add surfactant, keep warm Stir and react for 40 minutes...

Embodiment 2

[0072] 1. Adhesive formula:

[0073] Main ingredient: polyvinyl alcohol, 12 parts;

[0074] Complex polyol (composed of castor oil and polyol benzoate in a weight ratio of 1:4), 3 parts;

[0075] 22 parts of silica sol;

[0076] Filler (composed of calcium carbonate and talc in a weight ratio of 1:1), 8 parts;

[0077] water, 55 parts;

[0078] Surfactant (sodium dodecylbenzenesulfonate), 0.2 part;

[0079] Defoamer (tributyl phosphate), 0.05 parts;

[0080] Preservative (isothiazolinone), 0.05 part;

[0081] Cross-linking agent: 1,6-hexamethylene diisocyanate, its dosage is 10% of the main agent.

[0082] 2. Preparation method:

[0083] 1) Weigh each component according to the formula, and set aside;

[0084] 2) First add water to the reaction kettle with a heating stirrer, add polyvinyl alcohol and defoamer, heat up to 95°C and keep warm until the polyvinyl alcohol is completely dissolved, then cool the system down to 65°C, add surfactant, keep warm Stir and react f...

Embodiment 3

[0090] 1. Adhesive formula:

[0091] Main ingredient: polyvinyl alcohol, 9 parts;

[0092] Composite polyol (obtained by mixing soybean oil polyol, castor oil and polyol benzoate in a weight ratio of 15:15:50), 4 parts;

[0093] 18 parts of silica sol;

[0094] Filler (composed of kaolin and talc in a weight ratio of 2:1), 9 parts;

[0095] water, 60 parts;

[0096] Surfactant (sodium dodecylbenzenesulfonate), 0.05 part;

[0097] Defoamer (composed of n-butanol and tributyl phosphate in a weight ratio of 1:1), 0.15 parts;

[0098] Preservative (isothiazolinone), 0.2 parts;

[0099] Crosslinking agent: diphenylmethane diisocyanate, its consumption is 20% of the main agent.

[0100] 2. Preparation method:

[0101] 1) Weigh each component according to the formula, and set aside;

[0102] 2) First add water to the reaction kettle with a heating agitator, add polyvinyl alcohol and defoamer, heat up to 92°C and keep warm until the polyvinyl alcohol is completely dissolved, t...

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PUM

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Abstract

The invention discloses a water-based polymer isocyanate wood adhesive and a preparation method thereof. The adhesive comprises a main agent and a cross-linking agent, wherein the main agent is mainly prepared from the following components in parts by weight: 9-12 parts of polyvinyl alcohol, 3-8 parts of pluronic polyols, 15-25 parts of silica sol, 8-12 parts of a filler, 50-65 parts of water, 0.05-0.2 part of a surfactant, 0-0.15 part of a de-foaming agent and 0-0.2 part of a preservative; the pluronic polyols are obtained by mixing soybean oil polyols, castor oil and polyol benzoate according to the weight ratio of (0-15):(0-15):(50-80). The wood adhesive disclosed by the invention is proper in solid content, high in adhesive strength, good in water and weather resistance, environment-friendly and safe to use.

Description

technical field [0001] The invention relates to a wood adhesive, in particular to a water-based polymer isocyanate wood adhesive and a preparation method thereof. Background technique [0002] There are many types of existing wood adhesives, but urea-formaldehyde resin glue, phenolic resin glue and melamine-formaldehyde glue are mainly used in production. Since the main raw material of this type of glue is formaldehyde, therefore, in the process of production and use for a long period of time It will continuously release free formaldehyde, which will affect the environment and the health of users. [0003] With the enhancement of people's awareness of environmental protection, the environmental protection requirements for adhesives are also getting higher and higher. The development of a wood adhesive with suitable solid content, high adhesive strength, good water and weather resistance, and environmental protection has become the focus of research. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/06C09J11/04C08G18/62C08G18/67C08G18/32
CPCC08G18/3215C08G18/36C08G18/6212C08G2170/80C08K3/22C08K3/26C08K3/34C08K3/36C08K5/05C08K5/42C08K13/02C08K2003/2241C08K2003/265C09J11/04C09J11/06C09J175/04
Inventor 王钱生
Owner 桂林新美环保科技有限公司
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