Adhesive for plywood

An adhesive and plywood technology, applied in the directions of adhesives, adhesive types, polyether adhesives, etc., can solve the problems of low bonding strength, easy to mildew when wet, and achieve excellent environmental performance, low volatile organic compounds, and preparation simple craftsmanship

Inactive Publication Date: 2015-01-28
宁贻伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, starch adhesives have disadvantages such as low bonding strength and easy mildew when exposed to moisture, which limits the application in the bonding of wood products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The invention is a plywood adhesive, which is made of the following raw materials in parts by weight:

[0011] 2.5 parts of talcum powder, 4.5 parts of high molecular weight thermoplastic resin, 1.5 parts of urea, 2.5 parts of starch, 2.3 parts of polyether polyol, 0.3 part of propyl starch ether, 2 parts of ammonium thiosulfate and 0.5 part of modified tree ash.

Embodiment 2

[0013] The invention is a plywood adhesive, which is made of the following raw materials in parts by weight:

[0014] 4 parts of talcum powder, 8 parts of high molecular weight thermoplastic resin, 2.7 parts of urea, 6 parts of starch, 4.2 parts of polyether polyol, 1.2 parts of propyl starch ether, 3.5 parts of ammonium thiosulfate and 0.9 part of modified tree ash.

Embodiment 3

[0016] The invention is a plywood adhesive, which is made of the following raw materials in parts by weight:

[0017] 3.2 parts of talcum powder, 5.2 parts of high molecular weight thermoplastic resin, 2.4 parts of urea, 5.2 parts of starch, 3.3 parts of polyether polyol, 0.7 part of propyl starch ether, 2.4 parts of ammonium thiosulfate and 0.6 part of modified tree ash.

[0018] Compared with the existing adhesives, the present invention can be implemented on conventional adhesive production equipment without additional investment in processing equipment; the preparation process of the present invention is simple, the reaction conditions are mild, and the process stability is high; the main raw materials used are cheap Moreover, renewable starch does not release toxic and harmful gases, and has good environmental coordination; compared with ordinary white latex, this adhesive has lower total volatile organic compounds and better environmental protection performance.

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PUM

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Abstract

The invention discloses an adhesive for plywood. The adhesive for plywood is prepared from the following raw materials in parts by weight: 2.5-4 parts of talcum powder, 4.5-8 parts of high molecular weight thermoplastic resin, 1.5-2.7 parts of urea, 2.5-6 parts of starch, 2.3-4.2 parts of polyether polyol, 0.3-1.2 parts of propyl starch ether, 2-3.5 parts of ammonium thiosulphate and 0.5-0.9 part of modified tree ash. Compared with an existing adhesive, the adhesive for the plywood has the advantages that the adhesive for the plywood can be produced by adopting the conventional adhesive production equipment without investing additional processing equipment; the adhesive disclosed by the invention is simple in preparation technology, reaction conditions are mild, and process stability is high; cheap and reproducible starch is adopted as a main raw material, and no hazardous gas is released, so that the adhesive for the plywood has good environmental friendliness; and the adhesive for the plywood is lower in total volatile organic compound content and better in environmental performance compared with common white latex.

Description

technical field [0001] The invention relates to a plywood adhesive, which belongs to the field of building materials. Background technique [0002] As a kind of natural adhesive, starch adhesive has the advantages of light weight, no corrosion, no pollution, easy to obtain raw materials, low price, and convenient use. It is widely used for bonding paper, cotton fabrics, trademarks, etc. However, starch adhesives have disadvantages such as low bonding strength and easy mildew when exposed to moisture, which limits the application in the bonding of wood products. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a plywood adhesive which has high bonding strength, is not prone to mildew when exposed to moisture, is relatively low in cost, and is environmentally friendly. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J201/00C09J103/08C09J171/08C09J11/04C09J11/06
Inventor 宁贻伟
Owner 宁贻伟
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