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Dipping glue for papreg and preparing method thereof

A production method and technology of impregnating glue, applied in the direction of cellulose plastic layered products, layered products, chemical instruments and methods, etc., can solve the problems of not providing the production method of melamine glue, etc.

Inactive Publication Date: 2005-10-26
ZHEJIANG FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the patent does not provide any production method of melamine glue

Method used

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  • Dipping glue for papreg and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1 (referring to the proportioning figure of parts by weight in the above table):

[0011] First, add 400 parts by weight of nonylphenol (if phenol is used, it needs to be melted first) and 600 parts by weight of furfural into the reactor for stirring, add about 8 parts by weight of NaoH to adjust the pH value to 8.0-9.5, and then evenly heat up to 40-45°C , add 300 parts by weight of melamine and continue to heat up, but the heating rate needs to be controlled, and the temperature should be kept at 90-95°C, and the pH value should be measured and controlled. When the water temperature is 20°C, the water-soluble ratio reaches 1-0.7 times or the turbidity test has spherical objects, and the reaction has reached the end. During the process, the reaction is kept for 45-60 minutes, and the temperature is immediately lowered, and 650 parts by weight of ethanol is added, and the temperature is lowered to 45°C. The feeding is over.

[0012] Examples 2-10 The dipping...

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PUM

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Abstract

The present invention relates to a paper laminated plate impregnating adhesive and its production method. Said impregnating adhesive raw material composition includes the following components (by weight portion):phenolic organics 250-500 portions, trimeric cyanamide 50-500 portions, aldehyde organics, 500-1000 portions, solvent 100-800 portions and catalyst 3-20 portions. Besides, said invention also provides the concrete steps of said production method.

Description

technical field [0001] The present invention relates to adhesive compositions for thin laminates of cellulosic, plastic structures and the like and methods for their production. Background technique [0002] Thin-layer products of cellulose or plastic structure such as integrated circuit boards, laminated flooring, paper decorative boards, etc. In traditional methods, integrated circuit boards are made by impregnating epoxy resin or unsaturated polyester resin with fiber cloth; the surface layer of laminated flooring The material is impregnated with phenolic resin and hot pressed; the paper decorative board is impregnated and laminated with phenolic resin, the surface layer and functional additives. In the prior art, the use of the above-mentioned traditional adhesives produces a high amount of formaldehyde, which makes it difficult to meet environmental protection requirements. The production cost is high, and the index of high flame-retardant fireproof boards cannot be met...

Claims

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Application Information

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IPC IPC(8): C09J161/34
Inventor 傅深渊马灵飞俞友明任裕文钱武荣
Owner ZHEJIANG FORESTRY UNIVERSITY