Composite reed board

A reed and bio-glue technology, applied in the field of composite reed boards, can solve the problems of high viscosity of soybean protein adhesives, and achieve the effects of environmental friendliness, strong adhesion and good performance

Inactive Publication Date: 2019-01-11
余姚市合丰厨具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity of soybean protein adhesives, its modification is still a research hotspot.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] In order to achieve the above object, a composite reed board provided by the present invention includes reeds and modified bio-adhesives. Yes, the preparation process of the modified bio-adhesive is as follows:

[0012] a. Preparation of soybean protein glue: Add 200 g of water and 40-60 g of defatted soybean powder into a round-bottomed three-neck flask, heat up to 45-50°C during the stirring process, and after stirring evenly, add NaOH solution and react for 20-30 min Finally, add urea aqueous solution, continue to stir for 20-30 min, cool and discharge. In the above process, the amount of NaOH solution added is 20-25 g, and the mass fraction of NaOH is 30%. The amount of urea aqueous solution added is 15-22 g, of which the mass fraction of urea is 40%. The soybean gum solid content of the finally prepared soybean protein gum is about 24%.

[0013] b. Preparation of adhesive: take 100 g of the above soybean protein degradation solution, heat up to 45-50°C for 20-30...

Embodiment 2

[0016] For testing purposes, adhesives were prepared according to the following parameters. The amount of NaOH solution added was 22 g, and the mass fraction of NaOH was 30%. The amount of urea aqueous solution added was 20 g, and the mass fraction of urea was 40%. The reaction time was controlled at 25 min. During the preparation of the adhesive, the amount of dextrin added was 20 g. The added cross-linking agent is trimethylol melamine, the added amount is 5 g, and the cross-linking time is 30 min. The amount of borax added was 1 g. The adhesive prepared according to this process adopts the same processing conditions and the same amount of glue as the reed board prepared with urea-formaldehyde resin. The internal bonding strength of the reed board obtained from the trial production is 123% of that of urea-formaldehyde resin plywood.

Embodiment 3

[0018] For testing purposes, adhesives were prepared according to the following parameters. The amount of NaOH solution added was 22 g, and the mass fraction of NaOH was 30%. The amount of urea aqueous solution added was 20 g, and the mass fraction of urea was 40%. The reaction time was controlled at 25 min. During the preparation of the adhesive, the amount of dextrin added was 20 g. The cross-linking agent added was hexamethylenetetramine, the addition amount was 5 g, and the cross-linking time was 30 min. The amount of borax added was 1 g. The adhesive prepared according to this process adopts the same processing conditions and the same amount of glue as the reed board prepared with urea-formaldehyde resin. The internal bonding strength of the reed board obtained by trial production is 117% of that of urea-formaldehyde resin plywood.

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PUM

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Abstract

The invention provides a composite reed board, which comprises reed and a modified biological adhesive. According to the production process, the reed and the modified biological adhesive are subjectedto mixed paving, and rolling and edge sawing molding are performed to obtain the product, wherein the modified biological adhesive uses the combination of soy protein and dextrin, and the quality ofthe adhesive is substantially improved by using the cross-linking agent so as to improve the quality of reed. According to the present invention, the preparation process is simple and environmentallyfriendly, the product has strong adhesion, and the prepared reed board has good performance and high promotion value.

Description

technical field [0001] The invention relates to the field of artificial board production, in particular to a composite reed board. Background technique [0002] As a large agricultural country, my country's annual crop straw output is about 700 million tons. Using straw resources to manufacture straw boards is an environmentally friendly and high value-added approach. my country has relatively sufficient reed resources, with an annual output of 2 million tons accounting for about 6% of the world's total reed production, and the distribution area is very wide, with as many as 14 main reed producing areas. The reed fiber state is similar to poorer hardwoods and thus has better strength, which is why reed particleboards sometimes perform better than some wood particleboards. The maximum moisture absorption rate of reed stalks is 24.49%, and the maximum water absorption rate is 149%, both of which are lower than those of wood and cotton stalks. Therefore, the water resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J103/02C09J11/04C09J11/06
Inventor 徐伟
Owner 余姚市合丰厨具有限公司
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