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Environment friendly quaternary thermosetting copolymer resin for high pressure laminated decorative board

A quaternary copolymerization, thermosetting technology, applied in coating, textile and papermaking, fiber raw material processing and other directions, can solve the problems of high brittleness, uncomfortable impregnation, high viscosity, improve water resistance and brittleness, improve water resistance and heat resistance , the effect of increasing the reaction site

Active Publication Date: 2009-06-17
YICHANG WUXING DECORATING PLATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The volatilization of free formaldehyde exceeds the standard, which does not meet the national environmental protection requirements for decorative materials
[0004] (2) After curing, the brittleness of the board is large and the water resistance is poor, which does not meet the use requirements and relevant national regulations
[0005] (3) Dehydration is required and the process is complicated, which makes the quality of the fireproof board difficult to stabilize
[0007] At present, there is only urea-formaldehyde resin for wood-based panels in the market, but its viscosity is high and needs to be dehydrated, so it is not suitable for impregnation, and it is not suitable for the production of fireproof boards, and most of the glue is milky white in appearance, which is not as transparent as the resin used for fireproof boards. match

Method used

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  • Environment friendly quaternary thermosetting copolymer resin for high pressure laminated decorative board
  • Environment friendly quaternary thermosetting copolymer resin for high pressure laminated decorative board
  • Environment friendly quaternary thermosetting copolymer resin for high pressure laminated decorative board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] After adding 84 parts of formaldehyde and 7 parts of phenol into the reactor, adjust the pH to 8.0 with 30% sodium hydroxide aqueous solution, add 7 parts of melamine and 17 parts of urea, then heat up to 85℃-90℃, keep for 45 minutes and add polyethylene 2 parts of alcohol, stir for 15 minutes, adjust the pH to 5.4 with 30% formic acid solution, add 3 parts of urea, control the temperature at 70℃-75℃, and adjust the pH to 8.0 with 30% sodium hydroxide aqueous solution when the viscosity reaches 14s-16s. Add 3 parts of urea and stir for 15 minutes to cool down to room temperature, and then discharge to obtain environment-friendly quaternary copolymer thermosetting high-pressure decorative laminate resin.

Embodiment 2

[0024] After adding 60 parts of formaldehyde and 4 parts of phenol into the reactor, adjust the pH to 7.0 with 30% sodium hydroxide aqueous solution, add 3 parts of melamine and 10 parts of urea, then heat up to 80℃-85℃, keep it warm for 40 minutes and then add polyethylene 1 part of alcohol, stir for 10 minutes, adjust the pH to 4.6 with 30% formic acid solution, add 8 parts of urea, control the temperature at 60℃-70℃, and when the viscosity reaches 14s-16s, adjust the pH to 8.0 with 30% sodium hydroxide aqueous solution. Add 4 parts of urea and stir for 10 minutes to cool down to room temperature and then discharge to obtain environmentally-friendly quaternary copolymer thermosetting high-pressure decorative laminate resin.

Embodiment 3

[0026] After adding 100 parts of formaldehyde and 11 parts of phenol to the reaction kettle, adjust the pH to 7.5 with 30% sodium hydroxide aqueous solution, add 10 parts of melamine and 22 parts of urea, then heat up to 90℃-95℃, keep for 60 minutes and add polyethylene 4 parts of alcohol, stir for 20 minutes, adjust the pH to 6.0 with 30% formic acid solution, add 17 parts of urea, control the temperature at 60℃-70℃, and when the viscosity reaches 14s-16s, adjust the pH to 7.5 with 30% sodium hydroxide aqueous solution. Add 6 parts of urea and stir for 13 minutes to cool down to room temperature and then discharge to obtain environmentally-friendly quaternary copolymer thermosetting high-pressure decorative laminate resin.

[0027] The performance indexes of the product resin obtained in Example 1, Example 2 and Example 3 are:

[0028] Viscosity: 15-16s (tu-4 cup)

[0029] Density: 1.155-1.165g / cm 3

[0030] Solid content: 42-44%

[0031] PH: 8.5

[0032] Free formaldehyde: ≤1.2...

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Abstract

The environment friendly quaternary thermosetting copolymer resin for high pressure laminated decorative board is prepared through adding formaldehyde and phenol into reactor, regulating pH value with 30 % concentration sodium hydroxide aqua to 7.0-8.0, adding melamine and urea, heating to 85-95 deg.c and maintaining for 40-60 min, adding PVA via stirring for 10-20 min, regulating pH value with 30 % concentration formic acid solution to 4.6-6.0, adding urea and controlling the temperature in 60-75 deg.c, regulating pH value with 30 % concentration sodium hydroxide aqua to 7.5-8.0 after the viscosity reaches 14-16 s, adding urea via stirring, and discharging. The present invention has lowered molar ratio of formaldehyde to urea, added melamine and other measures to lower formaldehyde releasing amount, introduced phenol and PVA to raise the flexibility and water resistance of the resin, raised performance and simple production process.

Description

Technical field [0001] The invention relates to a thermosetting resin impregnated paper special resin for a high-pressure decorative laminate board widely used in the market and a production method thereof, in particular to an environment-friendly quaternary copolymer thermosetting resin for a high-pressure decorative laminate board. Background technique [0002] The production process of the thermosetting resin impregnated paper high-pressure decorative laminated board (hereinafter referred to as the fireproof board) is: the core layer is made of kraft paper, impregnated and dried, and then formed under high temperature and high pressure. The products are acid and alkali resistant, abrasion resistant, flame retardant, and decorative. They are widely used in the decoration and furniture industries. It uses phenolic resin, but with the increase in the price of phenol, the cost has risen too high. Existing fireproof board factories mostly use urea-formaldehyde resin, the main compo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G14/10C08G14/08D21H19/00
Inventor 肖昌文邓钢肖圣洁
Owner YICHANG WUXING DECORATING PLATE