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Aldehyde-free fireproof adhesive for plywood and preparation method of aldehyde-free fireproof adhesive

A plywood and adhesive technology, applied in the direction of adhesives, inorganic adhesives, adhesive additives, etc., can solve the problems of poor adhesion, fire resistance, poor water resistance, etc. The effect of degree of aggregation

Inactive Publication Date: 2019-12-06
晋江市千山新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor water resistance of the existing electrodeless adhesive made of water glass, which leads to its poor stability, cohesiveness and fire resistance, so it provides a formaldehyde-free fireproof adhesive for plywood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A formaldehyde-free fireproof adhesive for plywood, comprising 50 parts of water glass, 5 parts of nanocellulose, 15 parts of polyacrylamide, 20 parts of acrylic acid, 4 parts of sodium persulfate, 8 parts of butylene glycol, 10 parts of silica gel powder, deionized 70 parts of water, 10 parts of phosphorus series flame retardant, 3 parts of emulsion;

[0036] A preparation method of formaldehyde-free fireproof adhesive for plywood, comprising the following steps:

[0037] (1) Add water glass and deionized water into the reactor and stir to mix, then add polyacrylamide, then maintain the temperature at 60°C and stir for 30 minutes to obtain modified water glass;

[0038] (2) Add acrylic acid, nanocellulose and sodium persulfate to the modified water glass, and heat the temperature to 70°C with a water bath, then stir at 600r / min for 20min, and drop at 25 drops / min at the same time Butylene glycol until the end, to obtain viscous liquid;

[0039] (3) Add silica gel pow...

Embodiment 2

[0042] A formaldehyde-free fireproof adhesive for plywood, comprising 60 parts of water glass, 8 parts of nanocellulose, 20 parts of polyacrylamide, 30 parts of methacrylic acid and hydroxyalkyl, 6 parts of sodium persulfate, 10 parts of pentapentyl alcohol, asbestos 15 parts of powder, 80 parts of deionized water, 12 parts of inorganic flame retardant, 3 parts of emulsion;

[0043] A preparation method of formaldehyde-free fireproof adhesive for plywood, comprising the following steps:

[0044] (1) Add water glass and deionized water into the reactor and stir to mix, then add polyacrylamide, then maintain the temperature at 60°C and stir for 30 minutes to obtain modified water glass;

[0045] (2) Add methacrylic acid, hydroxyalkyl groups, nanocellulose and sodium persulfate into the modified water glass, and heat the temperature to 70°C in a water bath, then stir at 600r / min for 20min, and at the same time 25 drops / min drop pentapentyl alcohol until the end, to obtain viscou...

Embodiment 3

[0049] A formaldehyde-free fireproof adhesive for plywood, including 60 parts of water glass, 8 parts of nanocellulose, 20 parts of polyacrylamide, 30 parts of methacrylate, 6 parts of sodium persulfate, 10 parts of hexanehexanol, and 15 parts of mica powder , 80 parts of deionized water, 12 parts of intumescent flame retardant, 5 parts of emulsion;

[0050] A preparation method of formaldehyde-free fireproof adhesive for plywood, comprising the following steps:

[0051] (1) Add water glass and deionized water into the reactor and stir to mix, then add polyacrylamide, then maintain the temperature at 65°C and stir for 30 minutes to obtain modified water glass;

[0052] (2) Add methacrylate, nanocellulose and sodium persulfate to the modified water glass, and raise the temperature to 80°C by means of water bath heating, then stir at 600r / min for 40min, and at the same time 30 drops / min min dropwise add hexanehexyl alcohol until the end, to obtain viscous liquid;

[0053] (3) ...

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Abstract

The invention discloses an aldehyde-free fireproof adhesive for plywood and a preparation method of the aldehyde-free fireproof adhesive, and belongs to the technical field of preparation of adhesives. The aldehyde-free fireproof adhesive for the plywood comprises 50-60 parts of water glass, 5-8 parts of nanocellulose, 15-20 parts of polyacrylamide, 20-30 parts of a crosslinking agent, 4-6 parts of an initiator, 8-10 parts of a thickening agent, 10-15 parts of a filler and 70-80 parts of deionized water. According to the aldehyde-free fireproof adhesive for the plywood, the viscosity of the adhesive can be greatly improved by viscosity brought by the modification effect of the water glass and other biological materials, meanwhile, formaldehyde brought by a 'three-aldehyde' wood adhesive isavoided, therefore, the zero-formaldehyde characteristic of the adhesive is realized, and an effect of environmental protection can be achieved. Moreover, due to combination of inorganic silicon andorganic silicon, the fire resistance and water resistance of the adhesive are greatly improved.

Description

technical field [0001] The invention discloses a formaldehyde-free fireproof adhesive for plywood and a preparation method thereof, belonging to the technical field of adhesive preparation. Background technique [0002] In recent years, my country's wood-based panel industry has developed rapidly. According to records, the output of plywood in 2017 was 171.9521 million cubic meters, and the output of plywood in 2018 was 178.98 million cubic meters, a year-on-year increase of 9.4%. export country. The production of wood-based panels inevitably involves the application of adhesives. Nowadays, the main components of adhesives are urea-formaldehyde glue (UF), phenolic glue (PF) and urea-melamine-formaldehyde resin (UMF). According to the wood-based panel industry adhesive These adhesives are likely to cause formaldehyde pollution, and formaldehyde may cause leukemia in children; formaldehyde also has toxic effects on the eyes, respiratory system, lung function, nervous system fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J1/02C09J11/04C09J11/08C09J11/06C08F251/02C08F220/06C08F220/20C08F220/18
CPCC08F251/02C09J1/02C09J11/04C09J11/06C09J11/08C08F220/06C08F220/20C08F220/18
Inventor 钟燕平
Owner 晋江市千山新材料科技有限公司
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