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Water based copolymer adhesive for artificial board and its preparation method

A technology of copolymers and adhesives, applied in the directions of ester copolymer adhesives, nitrile copolymer adhesives, hydrocarbon copolymer adhesives, etc. The effect of low cost, excellent processing performance and excellent performance

Inactive Publication Date: 2003-04-16
南京元初科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some adhesives are rarely used in the wood industry because of their high price, or even no
At present, from the perspective of environmental protection, it is gradually being used in wood processing adhesives by improving its performance and reducing costs. For example, isocyanate adhesives have less volatile matter after curing, and have been used in plywood, particle board, and MDF abroad. More expensive, difficult to be widely adopted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Polymerization recipe:

[0041] 2-Ethylhexyl Acrylate 30%

[0042] Styrene 60%

[0043] Acrylic 2%

[0044] β-Hydroxyethyl Acrylate 3%

[0045] Sodium 2-acrylamide-2-methylpropanesulfonate 5%

[0046] 4 parts carbon tetrachloride

[0047] Potassium persulfate 0.5 parts

[0048] Dihexyl sodium sulfosuccinate 0.2 parts

[0049] Nano calcium carbonate (particle size about 40nm) 5 parts

[0050] 120 parts of water

[0051] The polymerization method is as follows: first, add all the sodium dihexyl sulfosuccinate, nano-calcium carbonate and 100 parts of water into the reaction kettle and stir to raise the temperature, control the temperature in the kettle to 70°C, and add the remaining 20 parts of water and potassium persulfate In the reactor, the mixture of monomer and carbon tetrachloride was continuously added dropwise to the reactor within 6 hours at the same time, and then the reaction was continued for 3 hours to complete the polymerization. The emulsion polyme...

Embodiment 2

[0053] Polymerization recipe:

[0054] 2-Ethylhexyl Acrylate 40%

[0055] Methyl methacrylate 10%

[0056] Acrylonitrile 20%

[0057] Styrene 20%

[0058] Itaconic acid 2%

[0059] β-Hydroxyethyl Acrylate 3%

[0060] Sodium 2-acrylamide-2-methylpropanesulfonate 5%

[0061] 4 parts carbon tetrachloride

[0062] Potassium persulfate 0.5 parts

[0063] Dihexyl sodium sulfosuccinate 0.2 parts

[0064] Nano silicon dioxide (particle size about 20nm) 5 parts

[0065] 120 parts of water

[0066] Polymerization method is the same as Example 1. A water-based copolymer adhesive with a solid content of 40%, a viscosity of 110 mpa.s and a particle size of 150 nm was obtained.

Embodiment 3

[0068] Polymerization recipe:

[0069] Butadiene 30%

[0070] Styrene 60%

[0071] Itaconic acid 2%

[0072] β-Hydroxyethyl Acrylate 3%

[0073] Sodium 2-acrylamide-2-methylpropanesulfonate 5%

[0074] 4 parts carbon tetrachloride

[0075] Potassium persulfate 0.5 parts

[0076] Dihexyl sodium sulfosuccinate 0.2 parts

[0077] Nano silicon dioxide (particle size about 20nm) 5 parts

[0078] 120 parts of water

[0079] Polymerization method is the same as Example 1. A water-based copolymer adhesive with a solid content of 40%, a viscosity of 150mpa.s and a particle size of 180nm was obtained.

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Abstract

A water-base copolymer adhesive for artificial board is prepared from soft monomer (10-60 wt.%), hard monomer (35-65), unsaturated carboxylic acid (2-10), hydroxy acrylate (2-10), polymer-type emulsifier monomer (1-5) through dispersing in water with special water disperser and polymerization at 30-120 deg.c. Its advantages are high performance, no release of formaldehyde, and low cost.

Description

technical field [0001] The invention relates to an adhesive, in particular to a water-based copolymer adhesive for wood-based panels and a preparation method thereof. Background technique: [0002] As we all know, with the frequent human activities, excessive logging of forest resources has caused great damage and threatened the living environment of human beings. Therefore, the timber industry is facing major problems such as the lack of forest resources and environmental protection. The contradiction between timber supply and demand has become increasingly prominent. The solution to this contradiction One of the effective ways is to vigorously develop the comprehensive processing and utilization of wood centered on wood-based panels. Among them, the adhesive for comprehensive processing of wood plays a pivotal role, with large dosage, strict requirements and wide application. Early adhesives were all made of natural products, and most of them were water-soluble, such as ro...

Claims

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Application Information

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IPC IPC(8): C09J9/00C09J125/04C09J133/04C09J133/20
Inventor 张放潘伟王桂英王小虚段兵葛瑞思
Owner 南京元初科技有限公司
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