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Waterproof flame-retardant wheat straw board preparation method

A wheat straw board, wheat straw technology, applied in the preparation of animal glue or gelatin, manufacturing tools, flat products, etc., can solve the problems of easy moisture absorption, poor heat resistance, etc. The effect of surface area and surface energy increase

Inactive Publication Date: 2018-09-28
裴文韬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing a waterproof and flame-retardant wheat straw board in view of the defects of the current wheat straw boards, such as fire prevention, poor heat resistance, and easy moisture absorption

Method used

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  • Waterproof flame-retardant wheat straw board preparation method

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example 1

[0027]Mix melamine and formaldehyde solution in a beaker with a mass ratio of 1:4, put the beaker in a water bath at a temperature of 80°C and react for 1 hour to obtain a prepolymer, and then put 30% of the mass of the prepolymer into the beaker Ammonium polyphosphate powder, continue to react in a water bath at 80°C for 2 hours, filter the cake after the reaction is over, put the filter cake into a dryer, set the temperature at 105°C, and dry for 40 minutes to obtain modified ammonium polyphosphate; In terms of parts by weight, weigh 10 parts of the above-mentioned modified ammonium polyphosphate, 20 parts of absolute ethanol, and 10 parts of distilled water and put them into a beaker for mixing, stir for 10 minutes, and drop ammonia water with a mass fraction of 25% in the beaker to adjust the pH value to 10.0 to obtain a flame retardant solution, then add vinyltriethoxysilane with 10% mass of the flame retardant solution into the beaker, heat the beaker in a water bath to 5...

example 2

[0029] Mix melamine and formaldehyde solution in a beaker with a mass ratio of 1:4, put the beaker in a water bath at a temperature of 83°C and react for 1 hour to obtain a prepolymer, and then put 35% of the mass of the prepolymer into the beaker Ammonium polyphosphate powder, continue to react in a water bath at 83°C for 3 hours, filter the filter cake after the reaction, put the filter cake in a dryer, set the temperature at 107°C, and dry for 50 minutes to obtain modified ammonium polyphosphate; In terms of parts by weight, weigh 13 parts of the above-mentioned modified ammonium polyphosphate, 23 parts of absolute ethanol, and 13 parts of distilled water and put them into a beaker for mixing, stir for 13 minutes, and drip ammonia water with a mass fraction of 30% in the beaker to adjust the pH value to 10.2, get the flame retardant liquid, then add vinyltriethoxysilane with 13% flame retardant liquid mass into the beaker, heat the beaker in a water bath to 61°C, react at co...

example 3

[0031] Mix melamine and formaldehyde solution in a beaker with a mass ratio of 1:4, put the beaker in a water bath at a temperature of 85°C and react for 2 hours to obtain a prepolymer, and then put 40% of the mass of the prepolymer into the beaker Ammonium polyphosphate powder, continue to react in a water bath at 85°C for 4 hours, filter the filter cake after the reaction, put the filter cake into a dryer, set the temperature at 110°C, and dry for 60 minutes to obtain modified ammonium polyphosphate; In terms of parts by weight, weigh 15 parts of the above-mentioned modified ammonium polyphosphate, 25 parts of absolute ethanol, and 15 parts of distilled water and put them into a beaker for mixing, stir for 15 minutes, and drop ammonia water with a mass fraction of 35% in the beaker to adjust the pH value to 10.4, get the flame retardant liquid, then add vinyltriethoxysilane with 15% flame retardant liquid mass into the beaker, heat the beaker in a water bath to 70°C, react at...

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Abstract

The invention relates to a Waterproof flame-retardant wheat straw board preparation method, and belongs to the technical field of building board preparation. According to the preparation method, silica gel microencapsulated modified ammonium polyphosphate is obtained through melamine modified ammonium polyphosphate at first, then, bean pulp, peanut meal and dried blood are added, an adhesive is obtained, wheat straw power is mixed with the adhesive and stirred to obtain a mixture, the mixture is placed in a lock mold for cold pressing and is dried, cut and ground, and a finished board productis obtained. Ammonium polyphosphate is modified through melamine and a silane coupling agent, a silicon-oxygen compound stable in chemical performance is generated, meanwhile, the microencapsulated structure achieves an isolation effect, and accordingly, the heat stability of the ammonium polyphosphate is improved; the ammonium polyphosphate is modified through the melamine, the specific surface area and surface energy can be increased, the flame-retardant effect is achieved, meanwhile, polyphosphoric acid or polymetaphosphate is generated, and the flame-retardant performance is further improved; and surface activity modification is conducted on protein through lauryl sodium sulfate, thus, the crosslinking density of the generated adhesive is improved, and the wide application prospects can be achieved.

Description

technical field [0001] The invention relates to a preparation method of a waterproof and flame-retardant wheat straw board, which belongs to the technical field of building board preparation. Background technique [0002] At present, due to the protection of the environment and forest resources in various countries, the use of wood-based panels is gradually restricted, but the demand for wood-based panels in society is increasing. Therefore, people are paying more and more attention to the issue of wood substitutes. my country is a big country of grain production and also a big country of straw production. A large amount of wheat straw is produced every year, accounting for about 20% to 30% of the total straw in the world. Among them, rice, wheat, soybean, corn, potato and other food crop straw are about 580 million tons, accounting for 89% of the total straw; peanut, rapeseed, sesame, sunflower and other oil crop straw accounted for 8% of the total, and cotton and sugarcane ...

Claims

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Application Information

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IPC IPC(8): B27N3/10B27N3/02B27N1/02C09J189/00C09J11/04
CPCB27N1/0209B27N3/002B27N3/02B27N3/10C08K2003/323C08L2205/025C09J11/04C09J189/00C08L89/00C08K9/10C08K9/06C08K9/04C08K3/32C08K13/06
Inventor 裴文韬蒋梦成陈帅
Owner 裴文韬
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