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Flame-retardant wood-plastic composite material and preparation method thereof

A wood-plastic composite material and plastic technology, which is applied in the field of flame-retardant wood-plastic composite material and its preparation, can solve the problems of high production cost of flame-retardant wood-plastic composite material, difficulty in preparing aqueous solution, rising production cost, etc., and achieves good flame retardant effect, widening the scope of application, and the effect of low production cost

Inactive Publication Date: 2010-08-25
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also the problem that the price of ammonium polyphosphate and phosphate ester is relatively high, which makes the production cost of flame-retardant wood-plastic composite materials relatively high; moreover, due to the poor water solubility of ammonium polyphosphate and phosphate ester, it is difficult to prepare an aqueous solution. Alcoholic solution has the problem of further increasing the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dissolve 19g of ammonium dihydrogen phosphate into 50g of water to make an aqueous solution of ammonium dihydrogen phosphate; add 51g of 60-mesh wood powder into the high-speed mixer, and then add the prepared aqueous solution of ammonium dihydrogen phosphate into the high-speed mixer , mixed evenly, took it out and let it stand for 5 hours, then dried it at 105° C. for 10 hours until the water content was 1.5%, and obtained a mixture of 70 g of flame retardant and plant fiber. Then 70g of the mixture, 25g of high-density polyethylene (HDPE), and 5g of maleic anhydride grafted polyethylene (MAPE) were added into a high-speed mixer and mixed uniformly to obtain a premix. Then take the premixed material and place it in a rheometer at 170°C for mixing and plasticizing for 8 minutes, then take it out and crush it, and heat press it with a vulcanizer at 165°C to obtain the flame-retardant wood-plastic composite material. is 28.5.

Embodiment 2

[0042] Dissolve 15g of ammonium dihydrogen phosphate and 10g of ammonium monohydrogen phosphate into 60g of water to make an aqueous solution of ammonium dihydrogen phosphate and ammonium monohydrogen phosphate; add 45g of 60-mesh bamboo powder into a high-speed mixer, and then make the resulting solution Add the aqueous solution of ammonium dihydrogen phosphate and ammonium monohydrogen phosphate into a high-speed mixer, mix evenly, take it out and let it stand for 5 hours, and then dry it at 105°C for 10 hours until the water content is 1.5%, and 70g of flame retardant and A mixture of plant fibers. Then 70g of the mixture, 25g of polypropylene (PP), and 5g of maleic anhydride grafted polypropylene (MAPP) were added into a high-speed mixer and mixed uniformly to obtain a premix. Then take the premixed material and place it in a rheometer at 175°C for mixing and plasticizing for 8 minutes, then take it out and crush it, and heat press it with a vulcanizer at 175°C to obtain t...

Embodiment 3～6

[0044] The preparation process of Examples 3-6 is the same as that of Examples 1 and 2, except that the formula is different. The formulations of Examples 3-6 are shown in Table 1.

[0045] Formulation and oxygen index of table 1 embodiment 1~6 and comparative example

[0046]

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PUM

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Abstract

The invention discloses a flame-retardant wood-plastic composite material. The flame-retardant wood-plastic composite material consists of the following components in part by weight: 35 to 60 parts of plant fiber, 10 to 35 parts of ammonium phosphate flame retardant, 20 to 28 parts of plastic and 2 to 10 parts of compatilizer, wherein the total parts of the plant fiber, the ammonium phosphate flame retardant, the plastic and the compatilizer are 100; the plant fiber is powder of 30 to 100 meshes of plant fiber; the ammonium phosphate flame retardant is one or a mixture of ammonium hydrogen phosphate and ammonium dihydrogen phosphate; the plastic is one or a mixture of more than two of the following components: polyethylene, polypropylene, acrylenitrile-butadiene-styrene (ABS) plastic and polystyrene; and the compatilizer is one or a mixture of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene. The flame-retardant wood-plastic composite material has the advantages of low flame retardant cost, good flame retardant effect and no harm and toxicity.

Description

(1) Technical field [0001] The invention provides a flame-retardant wood-plastic composite material and a preparation method thereof. (2) Background technology [0002] The main raw materials of wood-plastic composites (WPC) are agricultural and forestry wastes (the main components are plant fibers) and waste plastics, and their products are mainly used as substitutes for wood. The development of wood-plastic composite materials is of great significance to the comprehensive utilization of waste, environmental protection and alleviating the increasing pressure of natural wood, so it has received extensive attention from all over the world. In recent years, wood-plastic composite materials have been developed rapidly and widely used. [0003] However, since the main raw material plant fibers and plastics (especially polyolefin plastics) in wood-plastic composite materials are flammable materials, wood-plastic composite materials do not have flame retardancy and have fire safe...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L23/12C08L55/02C08L25/06C08L51/06C08K3/32
Inventor 吕群李珊珊张清锋
Owner HANGZHOU NORMAL UNIVERSITY
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