Flame-retardant natural fiber composite board and preparation method thereof

A technology of natural fiber and composite board, applied in the direction of flame-retardant fiber, fiber type, fiber treatment, etc., can solve the problems of use limitation, increased material cost, complicated method, etc., to ensure stability, rich surface, uniform mesh surface Effect

Inactive Publication Date: 2017-10-24
QINGHAI CHAIDAMU JIEQING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 201010142221.4 uses natural fibers and polylactic acid short fibers to produce a natural fiber composite material by opening, carding, cross-lapping, and needle punching. The material is treated with slurry, cut, and hot-pressed to form a sheet. The method adopted by the patent is complicated and cumbersome, resulting in high cost of materials, making it difficult to realize industrial application
[0005] Chinese patent 200610039121.2 will make the fibers required for the rubber surface layer, the middle base layer and the fabric layer, lay the net according to the order of the rubber surface layer, the middle base layer and the fabric layer, lay the net, needle punch into a composite hemp felt, and then heat and roll to form, process Forming the roof panel for automobiles, the hemp fiber is used in a large amount, and the quality of the product can be improved after hot roller pressing, but because the middle base layer of the material is added with polyester fiber, the material is not fully bonded, resulting in low strength of the material, not good Suitable for occasions with high strength
[0007] The natural fiber composite material in the above-mentioned patent has the following defects: 1. The processing procedure of the natural fiber composite material is complicated, which leads to an increase in the cost of the material; The effect of natural fiber reinforcement; 3. The flame retardant effect of composite materials has not been considered, and its use is greatly restricted

Method used

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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  • Flame-retardant natural fiber composite board and preparation method thereof

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Effect test

Embodiment 1

[0035] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of the device used for processing the flame-retardant natural fiber composite board of the embodiment of the present invention.

[0036] 1. Mix coconut palm fiber treated with flame retardant monoammonium phosphate with flame-retardant ES short fiber, mix roughly, and put it into the silo, wherein the content of coconut palm fiber is 30 parts, and the content of flame-retardant ES short fiber is 70 copies;

[0037] 2. After the mixed fibers are opened, the carding machine 2 lays the net to form a mixed natural fiber thin net 1, that is, the coconut palm / ES mixed fiber thin net;

[0038] 3. After the above-mentioned mixed natural fiber thin net 1 is alternately laminated, a laminated natural fiber web 3 is formed, that is, a laminated coconut palm / ES fiber web, which is transported through the bottom curtain 9, and after passing through the acupuncture machine 4 , to be needle-punched into felt; ...

Embodiment 2

[0042] 1. Mix jute fiber treated with flame retardant diammonium phosphate and flame-retardant PP chopped fiber, after roughly mixing, put it into the feed bin, wherein the content of jute fiber is 35 parts, and the content of flame-retardant PP chopped fiber is 65 copies;

[0043] 2. After the mixed fibers are opened, the carding machine lays the net to form a jute / PP mixed fiber thin net;

[0044] 3. After the above-mentioned mixed natural fiber thin nets are alternately laminated, a laminated natural fiber net is formed, which is needled into a felt by a needle punching machine;

[0045] 4. Heat the needle-punched felt through a heating oven, and roll it with a hot-pressing roller. The rolling pressure is 0.3-1MPa to form a continuous flame-retardant jute / PP fiber composite sheet. The hot-pressing temperature range is 195-200°C;

[0046] 5. Cut the continuous flame-retardant jute / PP fiber composite board, and test the cut material.

Embodiment 3

[0048] 1. Mix the flax fiber and ramie fiber treated with the flame retardant dimethyl methyl phosphate with the flame retardant ES staple fiber, mix them roughly, and put them into the silo, wherein the flax fiber content is 20 parts, and the ramie fiber content 20 parts, flame retardant ES short fiber content is 60 parts;

[0049]2. After the mixed fibers are opened, the carding machine lays the net to form a flame-retardant flax / ramie / ES mixed fiber thin net

[0050] 3. After the above-mentioned flame-retardant flax / ramie / ES mixed fiber thin net is laid alternately, a laminated natural fiber net is formed, and the flame-retardant flax / ramie / ES mixed fiber composite felt is needled by a needle punching machine;

[0051] 4. Heat the needle-punched felt through a heating oven and roll it with a hot pressing roller. The rolling pressure is 0.3-1MPa to form a continuous flame-retardant flax / ramie / ES mixed fiber composite sheet. The hot-pressing temperature range is 180- 190°C; ...

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Abstract

The invention discloses a flame-retardant natural fiber composite board, which is made of the following components in parts by weight: 30-45 parts of flame-retardant natural fiber and 55-70 parts of flame-retardant thermoplastic resin fiber. The invention also discloses a method for preparing the above-mentioned flame-retardant natural fiber composite board, which includes the following steps: mixing the flame-retardant natural fiber and the flame-retardant thermoplastic resin fiber, and the mixed fiber is opened and laid to form a mixed natural fiber Thin net: the above-mentioned mixed natural fiber thin net is alternately laminated to form a laminated natural fiber net, which is needled into felt and then heated and rolled to form a continuous flame-retardant natural fiber composite board. The flame-retardant natural fiber composite board provided by the invention has the characteristics of non-toxicity, no pollution, simple processing technology, small energy loss and outstanding environmental protection performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a fiber composite plate and a preparation method thereof. Background technique [0002] Natural fiber has low fiber density and high specific strength, and has been developed as a reinforcing material, and there have been a lot of research and inventions. Natural fiber is a kind of recyclable material, and its growth cycle is mostly 1 to 2 years. After the material is discarded, it can be degraded naturally after a period of time. As a green environmental protection material, the development of its application ability has been continuously expanded. Many scientific research achievements in Europe, America, Japan and China have also entered the stage of practical promotion, showing good application prospects. At present, natural fiber composite materials are involved in instrument panels, door inner panels, ceilings, trunk linings and other parts of automotive interior ...

Claims

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/02B32B9/04B32B27/02B32B27/32B32B27/36D04H1/4382D04H1/48D06M11/71D06M13/292D06M11/82D06M101/06D06M101/20D06M101/38D06M101/32
CPCB32B5/26B32B2262/0253B32B2262/0276B32B2262/06B32B2262/14B32B2305/38B32B2307/3065B32B2605/10B32B2607/00D04H1/4382D04H1/48D06M11/71D06M11/82D06M13/292D06M2101/06D06M2101/20D06M2101/32D06M2101/38D06M2200/30
Inventor 杨桂生刘密密
Owner QINGHAI CHAIDAMU JIEQING TECH CO LTD
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