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Plant fiber composite fireproof plate

A plant fiber and fireproof board technology, which is applied in the pretreatment of molding materials, household components, flat products, etc., can solve the problems of high price, weak surface gluing ability of plant fibers, and poor initial viscosity, so as to improve the gluing ability, Enhance water resistance and improve anti-corrosion effect

Active Publication Date: 2013-07-10
琚长林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When choosing adhesives, people usually use isocyanate MDI or urea-formaldehyde resin UF. However, isocyanate MDI is expensive and its initial viscosity is poor. Although urea-formaldehyde resin UF is relatively cheap, it is caused by the wax on the surface of the plant. Based on this, it is necessary to improve the production process of plant fiber fireproof boards, so as to obtain plant fiber fireproof boards that are easy to implement and have good gluing effect

Method used

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  • Plant fiber composite fireproof plate

Examples

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Effect test

example 1

[0028] The preparation method of the plant fiber composite fireproof board comprises the following steps:

[0029] Step 1: Crush the plant straw into (20-80) mesh straw powder.

[0030] Step 2: Prepare an acetic acid solution with a pH of 4.0, and add diphenol oxidase at a concentration of 20 U / g to the acetic acid solution to obtain an enzyme reaction solution.

[0031] Step 3. Mix the straw powder in step 1 with the enzyme reaction solution in step 2 at a weight ratio of 1:20, and carry out the enzyme reaction at a temperature of (48-60) ° C. The reaction time is 4-6 hours. The enzymatic straw powder is obtained.

[0032] Step 4: Dry the enzymatic straw powder in step 3 at a temperature of 120-150°C to keep the water content of the straw at (5-8)%.

[0033] Step 5: Mix polysiloxane and urea-formaldehyde resin at a ratio of 1:5 to prepare a modified adhesive.

[0034] Step 6, the stalk powder obtained in step 4, the modified adhesive obtained in step 5, iron oxide yellow, ...

example 2

[0039] The manufacturing method of the plant fiber composite fireproof board comprises the following steps:

[0040] Step 1, crushing the plant stalks into 20-80 mesh straw powder.

[0041] Step 2: Prepare an acetic acid solution with a pH of 5.0, and add diphenol oxidase at a concentration of 30 U / g to the acetic acid solution to obtain an enzyme reaction solution.

[0042] Step 3. Mix the straw powder in step 1 with the enzyme reaction solution in step 2 according to the weight ratio of 1:30, and carry out the enzyme reaction at a temperature of (48-60) ℃, and the reaction time is 4-6 hours. After the reaction, the enzymatic straw powder is obtained.

[0043] Step 4, drying the enzymatic straw powder in step 3 at a temperature of (120-160)°C, so that the water content of the enzymatic straw powder is 5-7%.

[0044] Step 5: Mix polysiloxane and urea-formaldehyde resin at a ratio of 1:60 to prepare a modified adhesive.

[0045] Step 6. Combine the dried enzymatic straw powd...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a plant fiber composite fireproof plate. The plant fiber composite fireproof plate is characterized by sequentially comprising an upper reinforcing layer, a core layer and a lower reinforcing layer from top to bottom, the core layer comprises enzymatic plant fiber powder, modified adhesive, iron oxide yellow, fire retardants and paraffin, and the weight ratio of the enzymatic plant fiber powder to the modified adhesive to the iron oxide yellow to the fire retardants to the paraffin is (75-80):(14-16):(0.5-1):(1-3.5):(4-5). The plant fiber composite fireproof plate has the advantages that by processing steps such as enzymatic reaction and modification for adhesive in a manufacturing method, hydroxyl radicals on surfaces of plant fibers are greatly increased under the condition of guaranteeing that only a small quantity of celluloses is destroyed, the adhesion capacity of the adhesive to the plant fibers is greatly improved, and the water resistance of the plate is strengthened; and properties such as corrosion resistance and heat insulation of the fireproof plate which is a multilayer composite plate are improved.

Description

technical field [0001] The invention relates to the field of molding materials, in particular to a plant fiber composite fireproof board. Background technique [0002] At present, with the rapid development of the construction industry, there is an increasing demand for building materials. Based on the strengthening of environmental protection awareness, people focus on the production of fireproof board materials made of plant fibers. Plant fiber fireproof boards are The agricultural waste plant straw is recycled, crushed and dried, fully mixed with the adhesive, and then subjected to hot pressing to form a lightweight and environmentally friendly board. [0003] When choosing adhesives, people usually use isocyanate MDI or urea-formaldehyde resin UF. However, isocyanate MDI is expensive and its initial viscosity is poor. Although urea-formaldehyde resin UF is relatively cheap, it is caused by the wax on the surface of the plant. Based on this, it is necessary to improve th...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/12B32B9/02B32B7/12B27N1/00B27N1/02
CPCB32B5/24B32B2262/06B32B2607/00
Inventor 琚长林
Owner 琚长林
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