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Recombined wood board adopting polyimide modified polyurethane adhesive and preparation method of polyimide modified polyurethane adhesive

A technology of polyurethane adhesive and polyimide, which is applied in the field of wood flooring, can solve problems such as ineffective effects, and achieve the effects of improving mechanical properties, superior economic benefits, and simplifying the preparation process

Active Publication Date: 2016-06-15
JIUSHENG WOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to alleviate the contradiction between supply and demand in the wooden floor market, and to protect our country's precious tree species and achieve sustainable development, more and more floor industry players are now considering making full use of wood in the production of flooring, but the effect is not obvious

Method used

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  • Recombined wood board adopting polyimide modified polyurethane adhesive and preparation method of polyimide modified polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: A kind of recombined wood board adopting polyimide modified polyurethane adhesive, the recombined wood core board formed by pasting the fiber strips through the adhesive, and pressing, the surface of the recombined wood core board is provided with a paint layer, The side of the recombined wood core board is provided with side tenons and side grooves, and the adhesive is made of the following raw materials in parts by weight: 40 parts of polytetrahydrofuran glycol (molecular weight 2000), 4,4'-diphenylmethane 8.7 parts of isocyanate, 2.2 parts of pyromellitic dianhydride, 0.8 parts of simethicone, 0.06 parts of triethylenediamine, 20 parts of diisooctyl phthalate, 0.05 parts of p-toluenesulfonyl isocyanate , 0.05 parts of γ-aminopropyltriethoxysilane, and 0.05 parts of 3,5-di-tert-butyl-4-hydroxyphenylpropanoic acid octadecanoate.

[0042] Concrete preparation steps are:

[0043] 1) Weigh 400g of polytetrahydrofuran diol with a molecular weight of 2000 and...

Embodiment 2

[0054] Embodiment 2: A kind of recombined wood board adopting polyimide modified polyurethane adhesive, the recombined wood core board formed by pasting the fiber strips through the adhesive, and pressing, the surface of the restructured wood core board is provided with a paint layer, The side of the recombined wood core board is provided with side tenons and side grooves, and the adhesive is made of the following raw materials in parts by weight: 35 parts of tetrahydrofuran-ethylene oxide copolyglycol (molecular weight 3000), 12.2 parts of hexamethylene diisocyanate 5 parts of 3,3′,4,4′-biphenyltetraacid dianhydride, 1.6 parts of simethicone, 0.12 parts of triethylenediamine, 35 parts of diisooctyl phthalate, 0.13 parts of triethyl orthoformate, 0.3 parts of γ-(methacryloyloxy)propyltrimethoxysilane, and 0.08 parts of isooctyl 3,5-di-tert-butyl-4-hydroxyphenylpropionate.

[0055] Concrete preparation steps are:

[0056] 1) Weigh 350g of tetrahydrofuran-ethylene oxide copolyg...

Embodiment 3

[0067] Embodiment 3: Comprehensive performance test of adhesive force.

[0068] Shear strength is measured according to GB7124-86;

[0069] Peel strength is measured according to GB / T7122-1996.

[0070] Get the wood floors of Examples 1 and 2, and then take the wood floors prepared by the polyurethane adhesive commonly used in the industry as a comparison group, and measure its shear strength and peel strength at room temperature for 24 hours, 3 days and 10 days, as shown in the table 1.

[0071] Table 1 Wood floor adhesion test

[0072]

[0073] It can be seen from Table 1 that the shear strength of Example 1 and Example 2 is significantly better than that of the comparison group at 25°C, and the shear strength at 150°C is also much better than that of the comparison group, and the effect is very significant. And the peel strength of Example 1 and Example 2 is also much better than that of the comparison group. It can be seen that the present invention not only has sup...

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Abstract

The invention discloses a recombined wood board adopting a polyimide modified polyurethane adhesive and a preparation method of the polyimide modified polyurethane adhesive. Fiber strips are bonded through the adhesive and pressed into the recombined block board. A paint layer is arranged on the surface of the recombined block board, and the side face of the recombined block board is provided with side tenons and side grooves. The adhesive is prepared from, by weight, 5-20 parts of polyisocyanate, 1-10 parts of polyanhydride, 30-50 parts of polyalcohol, 20-50 parts of plasticizer, 0.02-0.20 part of catalyst, 0.5-3 parts of defoaming agent, 0.02-0.20 part of dewatering agent, 0.02-0.5 part of coupling agent and 0.02-0.20 part of antioxidant. According to the recombined wood board, waste of wood can be effectively reduced, wood resources are saved, and meanwhile excellent economic benefits are obtained. Besides, the viscosity and light transmittance of wood floors can be effectively improved, and the connecting strength between the wood floors is improved.

Description

technical field [0001] The invention relates to a recombined wood board using a polyimide modified polyurethane adhesive and a preparation method thereof, belonging to the technical field of production of wooden floors, especially recombined wooden floors. Background technique [0002] With the rapid development of the economy and the gradual improvement of people's living standards, the consumption of wood has further increased, causing the price of wood products in my country to rise, and the prices of solid wood flooring and multi-layer solid wood flooring with precious tree species as veneer are rising steadily. In order to alleviate the contradiction between supply and demand in the wooden floor market, and to protect our country's precious tree species and achieve sustainable development, more and more floor industry players are now considering making full use of wood in the production of flooring, but the effect is not obvious. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): C09J175/08C08G18/76C08G18/73C08G18/48C08G18/64C08G18/12C08G73/10B27N3/00B27N3/08
CPCB27N3/002B27N3/08C08G18/12C08G18/4081C08G18/4854C08G18/6438C08G18/73C08G18/7671C08G73/1035C09J175/08C08L2201/08C08L83/04B27N3/00B27N3/04B27N7/005C08G18/10C08G18/289B27K3/0214B27M1/08B27M3/0086B27N3/02
Inventor 孙龙祥吴忠其王艳伟邵海龙
Owner JIUSHENG WOOD
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