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Novel flame-retardant wood-plastic material

A wood-plastic material and masterbatch technology, applied in the field of flame-retardant wood-plastic materials, can solve the problems of low flame-retardant efficiency, high cost, and affecting the mechanical properties of materials, and achieve the effects of low cost, simple processing method, and unique formula

Inactive Publication Date: 2015-05-13
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a flame-retardant wood-plastic material, which can effectively solve the problem of low flame-retardant efficiency, high cost and affecting the mechanical properties of materials of other non-organophosphorus flame retardants. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the specific implementation of the present invention, it is made of masterbatch and auxiliary materials. The masterbatch is calculated by weight percentage: 10% of straw powder, 18% of wood powder, 20% of rice husk powder, 40% of polyvinyl chloride, carbonic acid Made of calcium 11.8%, trichlorofluoromethane 0.2%;

[0017] The auxiliary materials are made of: compound component A 1%, compound component B 0.5% and compound component C 0.2% in percentage by weight of the masterbatch;

[0018] Its preparation method is to add compound component A, compound component B and compound component C into the mixing tank, disperse at high speed for 20 minutes, make the materials fully mixed, and then use a sand mill to grind into a uniform light gray powder. Particle size ≥ 100 mesh, set aside; put the masterbatch into the mixer and stir for 10 minutes in advance to make it dispersed without agglomeration; then mix the mixed compound component A, compound component B and compou...

Embodiment 2

[0020] The present invention is made of masterbatch and auxiliary materials. The percentages by weight of each component of the masterbatch are: 10% of straw powder, 20% of wood powder, 10% of rice husk powder, 45% of polyvinyl chloride, 13% of calcium carbonate, dichloride Difluoromethane 2%;

[0021] The auxiliary materials are made of 1.5% of compound component A, 0.5% of compound component B and 0.2% of compound component C, respectively accounting for the weight percentage of the masterbatch;

[0022] Its preparation method is to add compound component A, compound component B and compound component C into the mixing tank, disperse at high speed for 20 minutes, make the materials fully mixed, and then use a sand mill to grind into a uniform light gray powder. Particle size ≥ 100 mesh, set aside; put the masterbatch into the mixer and stir for 10 minutes in advance to make it dispersed without agglomeration; then mix the mixed compound component A, compound component B and ...

Embodiment 3

[0024] The present invention is made of masterbatch and auxiliary materials. The percentages by weight of each component of the masterbatch are: 10% of straw powder, 20% of wood powder, 10% of rice husk powder, 45% of polyvinyl chloride, 13% of calcium carbonate, azo Diformamide 2%;

[0025] The auxiliary materials are made of 2.0% of compound component A, 0.5% of compound component B and 0.2% of compound component C, respectively accounting for the weight percentage of the masterbatch;

[0026] Its preparation method is to add compound component A, compound component B and compound component C into the mixing tank, disperse at high speed for 20 minutes, make the materials fully mixed, and then use a sand mill to grind into a uniform light gray powder. Particle size ≥ 100 mesh, set aside; put the masterbatch into the mixer and stir for 15 minutes in advance to make it dispersed without agglomeration; then mix the mixed compound component A, compound component B and compound co...

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Abstract

The invention relates to a flame-retardant wood-plastic technology formula which effectively solves the problems that other non-organic phosphorus flame retardants are low in flame-retardant efficiency, high in cost and poor in mechanical property. The formula is prepared by a master batch and an adjuvant material; the master batch is prepared by 1-20% of straw powder, wood flour, rice hull powder, polyvinylchloride, calcium carbonate and a foaming agent; and an adjuvant material is prepared by the following components by weight percentage in the master batch: 1-3% of compound component A, 0.2-0.5% of compound component B and 0.2% of compound component C. The A comprises triortho-phenylene diamino cycle tripolyphosphazene and ammonium polyphosphate at a weight ratio of 1:1; the B comprises molybdenum oxide and zirconium hydroxide at a weight ratio of 2:1; the C comprises urea resin and polyvinyl alcohol at a weight ratio of 1:1. The A, B and C are added into a stirring tank, dispersed, and ground into light gray powder for use, the master batch is added into a stirrer for stirring, a mixture of the A, B and C is added through a spraying gun, stirring is continued for 30-50min, and mixing, drying, and extrusion forming are conducted. The formula is unique, low in cost, fume and toxicity, and environment-friendly.

Description

technical field [0001] The invention relates to building materials, in particular to a flame-retardant wood-plastic material. Background technique [0002] Wood-plastic composite (WPC) is a composite material mainly made of wood or cellulose as the base material and plastic. It is a certain proportion of wood fibers (such as wood powder, straw powder, cotton stalk powder, bamboo powder, Nut shell powder, etc.) is a new type of material combined with thermoplastic polymer resin or other materials after pretreatment; Both raw wood fiber and polyolefin are flammable materials, so the composite material is also a flammable material. It is the need for the application and development of the material to endow the wood-plastic composite material with good flame retardancy; the flame retardancy of wood and wood fiber alone There are many studies, generally phosphorus-nitrogen flame retardants; boron flame retardants; halogen-containing flame retardants; other inorganic salts, etc.;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L97/02C08L61/24C08L29/04C08K13/02C08K3/26C08K5/5399C08K3/32C08K3/22
Inventor 赵玉芬叶勇邹如意于玉建张迪徐占辉
Owner ZHENGZHOU UNIV
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