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Wood adhesive

A wood adhesive and stabilizer technology, applied in the directions of adhesive additives, adhesive types, starch-derived adhesives, etc. The effect of obvious advantages, simple equipment and strong water resistance

Inactive Publication Date: 2016-10-26
广西南宁桂尔创环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a kind of wood adhesive to solve the problems of poor water resistance, bonding strength, solid content and storage stability in existing starch-based adhesives used for wood-based panels

Method used

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  • Wood adhesive

Examples

Experimental program
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Effect test

preparation example Construction

[0034] The preparation method of described wood adhesive comprises the following steps:

[0035] S1: prepare arrowroot starch slurry I with a concentration of 16-23Be' and a pH value of 3.2-3.9;

[0036] S2: Add fatty acid glycerides, N,N-dimethylformamide, coupling agent, catalyst with a concentration of 1%-1.9% to the arrowroot starch slurry I in step S1, and then at a temperature of 45-55°C, Carry out cross-linking and branching reaction at a stirring speed of 60-80r / min for 3-4h to prepare slurry II;

[0037] S3: Add sodium hydroxide to the slurry II of step S2, adjust the pH value to 9.2-9.6, then add epoxy chlorobutane, urea, initiator, plasticizer, toughening agent, tackifier, and then The temperature is 56-58°C, the stirring speed is 50-100r / min, and the crosslinking reaction is carried out for 1.5-2h to prepare the slurry III;

[0038] S4: Add a stabilizer to the slurry III in step S3, adjust the pH value to 7.8-8.2, raise the temperature to 75-79°C, gelatinize for ...

Embodiment 1

[0041] A wood adhesive, in parts by weight, comprising the following raw materials: 132 parts of arrowroot starch, 15 parts of fatty acid glycerides, 13 parts of N, N-dimethylformamide, 4 parts of sodium hydroxide, epoxy chloride 5 parts of butane, 4 parts of urea, 0.5 parts of coupling agent, 0.3 parts of initiator, 0.2 parts of catalyst, 0.3 parts of stabilizer, 0.8 parts of defoamer, 0.9 parts of plasticizer, 0.8 parts of toughening agent, tackifier 0.6 copies;

[0042] The coupling agent is 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane;

[0043] The initiator is azobisisobutyrate (ethylene glycol acrylate);

[0044] The catalyst is a platinum catalyst;

[0045] The stabilizer is an organotin stabilizer;

[0046] Described defoamer is polyoxyethylene polyoxypropylene pentaerythritol ether;

[0047] Described plasticizer is citric acid ester;

[0048] Described toughening agent is polypropylene adiene rubber;

[0049] Described tackifier is propyltrimethoxysilane;

[005...

Embodiment 2

[0056] A wood adhesive, in parts by weight, comprising the following raw materials: 104 parts of arrowroot starch, 13 parts of fatty acid glycerides, 11 parts of N, N-dimethylformamide, 2 parts of sodium hydroxide, epoxy chloride 3 parts of butane, 2 parts of urea, 0.3 part of coupling agent, 0.1 part of initiator, 0.1 part of catalyst, 0.1 part of stabilizer, 0.5 part of defoamer, 0.6 part of plasticizer, 0.5 part of toughening agent, tackifier 0.4 copies;

[0057] The coupling agent is 2,5-dimethyl-2,5-bis(benzoylperoxy)-hexane;

[0058] The initiator is azobisisobutyrate (ethylene glycol acrylate);

[0059] The catalyst is a platinum catalyst;

[0060] The stabilizer is an organotin stabilizer;

[0061] Described defoamer is polyoxyethylene polyoxypropylene pentaerythritol ether;

[0062] Described plasticizer is citric acid ester;

[0063] Described toughening agent is polypropylene adiene rubber;

[0064] Described tackifier is propyltrimethoxysilane;

[0065] The ...

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Abstract

The invention discloses a wood adhesive, which comprises the following raw materials by weight: 104-164 parts of maranta arundinacea l starch, 13-19 parts of fatty acid glyceride, 11-15 parts of N,N-dimethylformamide, 2-5 parts of sodium hydroxide, 3-7 parts of epoxy chlorobutane, 2-5 parts of urea, 0.3-0.7 part of a coupling agent, 0.1-0.4 part of an initiator, 0.1-0.3 part of a catalyst, 0.1-0.4 part of a stabilizer, 0.5-1 part of a defoamer, 0.6-1.2 parts of a plasticizer, 0.5-0.9 part of a toughening agent, and 0.4-0.8 part of a tackifier. According to the present invention, the wood adhesive has characteristics of high strength and strong water resistance, and completely meets the related standard in GB / T14732-2006, and the strength of the produced plywood is far beyond the national class II wood-based panel standard; and the wood adhesive can be widely used in production of wood-based panels, plywood and cellulose boards, and can replace the three aldehyde glue.

Description

technical field [0001] The invention belongs to the technical field of adhesive preparation, and in particular relates to a wood adhesive. Background technique [0002] Since the beginning of the 21st century, the domestic wood-based panel industry has achieved unconventional rapid development, with an average annual growth rate of 22%. In 2009, the output of wood-based panels exceeded 80 million cubic meters, and the annual consumption of adhesives was about 5 million. It has become the world's largest wood-based panel production country. At present, the adhesives used in the wood-based panel manufacturing industry at home and abroad are mainly urea-formaldehyde resin, phenolic resin, melamine-formaldehyde resin, etc. This type of adhesive has a high content of free formaldehyde, and slowly releases toxic formaldehyde gas during use, causing harm to the human body. In order to reduce the emission of formaldehyde gas, the domestic research idea is to improve the original te...

Claims

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Application Information

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IPC IPC(8): C09J103/04C09J11/06
CPCC09J103/04C08L2205/03C09J11/06C08L71/02C08K5/103C08K5/5419
Inventor 戚海冰
Owner 广西南宁桂尔创环保科技有限公司
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