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High-performance natural non-toxic cement agent for timber and its preparation method

A wood adhesive, high-performance technology, applied in adhesive types, starch adhesives, unsaturated alcohol copolymer adhesives, etc., can solve the problem that white latex cannot meet market requirements, high strength cannot meet requirements, application Foreground constraints and other issues, to achieve the effect of good freeze-thaw stability, easy to master, and standardized operation

Inactive Publication Date: 2007-08-01
郑正炯 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, the demand for viscose in the domestic and foreign markets is increasing. On the other hand, users have higher and higher requirements for the performance of the glue, especially for high-performance, comprehensive performance, and cost-effective glue. The white latex circulating in the market It is difficult to meet the requirements of the market
The applicant once applied for an invention patent on May 26, 2003 "Preparation Method of Natural Non-toxic Adhesive for Wood", although it has good comprehensive performance and low price, it still cannot meet the needs of the market, especially in high-strength adhesives. (dry strength above 10Mpa), fast drying (the product can be moved freely within 20min-0.5h after being glued), water resistance (the product is soaked in water at 70°C for 5h after 24h drying), and the glue does not meet the requirements.
Therefore, its application prospects are restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: This adhesive is made up of adhesive A glue and B glue prepared with water as the medium,

[0014] The specific preparation method is as follows:

[0015] (1) Preparation of glue A: get 60 grams of cornstarch, 40 grams of amylose, and 100 grams of water and place them in a container to mix and stir evenly to form a latex solution, and add a concentration of 20% PVA and PA mixed solution (mixing PVA in liquid: PA=8: 2) 100 grams carry out graft copolymerization, add ethyl acetoacetate 12 grams simultaneously and carry out acetylation modification treatment 3 hours, in the starch glue of acetylation treatment again simultaneously butyl acrylate 20 grams, 8 grams of methanol, 7 grams of 30% NaoH, 3 grams of benzoic acid (for anti-corrosion, water resistance, and drying effects), 4 grams of citric acid (for plasticizing, whitening, and pH adjustment) and 10% persulfuric acid 8 grams of ammonium; the addition of butyl acrylate to make graft copolymerization wi...

Embodiment 2

[0018] Example 2: Prepare glue A and glue B respectively as described in Example 1. Take 300 grams of glue A and 200 grams of glue B to prepare an adhesive that can withstand soaking in water at 70° C. for 5 hours.

Embodiment 3

[0019] Embodiment 3: make A glue and B glue respectively as described in embodiment 1, get A glue 300 grams, B glue 300 grams, add 4% isocyanate again, can bear 100 ℃, boil in water for 3 hours.

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Abstract

The invention relates to a high- performance natural non- toxic timber adhesive agent and the preparing method. Said adhesive agent takes water as medium and comprises adhesive agent A and adhesive agent B. said agent A comprises corn starch, amylose, mixing liquid of PVA and PA, acetoacetic ester, butyl acrylate, benzene carbonic acid and citrate, and after second- time grafting and ploymerization, acetylization modification and several- hour stirring under a certain temperature, it is can be got; agent B comprises mixing liquid of PVA and PA, lithium metasilicate, VAC, butyl acrylate, A- 171, OP- 10, and butyl benzoate, and after several- hour stirring under a certain temperature, it is can be got; dispensing agent A and agent B properly and the final product can be got. The adhesive agent is characterized by non- toxic, high strenght, water- proof, antifreezing, stable coagulation. The invention is characterized by nolve idea, regular process, easy operation, low cost, no pollution, and suitability for industrial production. The timber adhesive agent is suited to be used for integration sheet material, finger- joint sheet material, normal adhesive pressing, furniture and instrument, and so on.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a high-performance natural non-toxic wood adhesive and a preparation method thereof. Background technique [0002] As we all know, the demand for viscose in the domestic and foreign markets is increasing. On the other hand, users have higher and higher requirements for the performance of the glue, especially for high-performance, comprehensive performance, and cost-effective glue. The white latex circulating in the market It is difficult to meet the requirements of the market. The applicant once applied for an invention patent on May 26, 2003 "Preparation Method of Natural Non-toxic Adhesive for Wood", although it has good comprehensive performance and low price, it still cannot meet the needs of the market, especially in high-strength adhesives. (dry strength above 10Mpa), fast drying (the product can be moved freely within 20min-0.5h after being glued), and water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J129/04C09J103/12
Inventor 陈采良郑正炯
Owner 郑正炯
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