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Xylem filber-polyvinyl chloride composite material and method for producing the same

A technology of lignocellulosic material and polyvinyl chloride, which is applied in the field of composite materials and their preparation, can solve the problems of toxic gas, a large amount of black smoke, high flammability, and achieves the effects of easy operation, simple preparation method and low equipment requirements.

Inactive Publication Date: 2008-05-07
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high flammability of wood fiber-polyvinyl chloride composite material, which will produce a lot of black smoke and toxic gas to human body when burning, and provide a wood fiber-polyvinyl chloride composite material and its preparation method

Method used

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Experimental program
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Effect test

specific Embodiment approach 1

[0013] Specific embodiment 1: The wood fiber-polyvinyl chloride composite material of this embodiment is composed of 100 to 600 parts of polyvinyl chloride resin, 30 to 700 parts of wood fiber material, 3 to 145 parts of intumescent flame retardant, 1 parts by weight ratio. ~55 parts of copper oxide, 6~75 parts of heat stabilizer, 4~60 parts of plasticizer and 4~65 parts of compatibilizer; the intumescent flame retardant is made of pentaerythritol, ammonium polyphosphate and melamine according to 3:8 : The mass ratio is 6 and the degree of polymerization of ammonium polyphosphate is 1500-4000.

[0014] In this embodiment, the lignocellulosic material is mainly composed of polyhydroxy cellulose, hemicellulose, and lignin with a cross-linked structure. It is easy to be pyrolyzed and carbonized under acid catalysis. Therefore, the lignocellulosic fiber itself can also be used as an intumescent flame retardant Auxiliary char-forming agent to improve the flame retardant effect of intum...

specific Embodiment approach 2

[0015] Specific embodiment two: this embodiment is different from specific embodiment one in that the wood fiber-polyvinyl chloride composite material further includes 0.5-15 parts of lubricant, 6-195 parts of impact modifier, 0.2-6 parts colorant and / or 0.2-13 parts antioxidant. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: This embodiment is different from specific embodiment two in that the lubricant is stearic acid, calcium stearate, zinc stearate, paraffin wax, polyethylene wax or chlorinated paraffin wax. Others are the same as the second embodiment.

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Abstract

A wood fiber-polyvinyl chloride composite material and a preparation method thereof, which relate to a composite material and a preparation method thereof. It solves the problem that the wood fiber-polyvinyl chloride composite material has high flammability and produces a large amount of black smoke and toxic gas when burned. The wood fiber-polyvinyl chloride composite material is mainly composed of 100-600 parts of polyvinyl chloride resin, 30-700 parts of wood fiber material, 3-145 parts of intumescent flame retardant, 1-55 parts of copper oxide, 6 ~75 parts of heat stabilizer, 4~60 parts of plasticizer and 4~65 parts of compatibilizer. Preparation method: 1. premixed material; 2. extrusion molding. According to the GB / T8924-2005 standard test of the wood fiber-polyvinyl chloride composite material of the present invention, the oxygen index of the wood fiber-polyvinyl chloride composite material of the present invention is greater than 35%, the ignition time is long, no melting drops occur, and it belongs to the flame retardant grade Material. The preparation method of the wood fiber-polyvinyl chloride composite material of the invention is simple, easy to operate, has low requirements on equipment, and is convenient for popularization and application.

Description

Technical field [0001] The invention relates to a composite material and a preparation method thereof. Background technique [0002] Wood fiber-polyvinyl chloride composite material is a new type of composite material formed by adding a large amount of wood fiber, wood powder, bamboo powder, straw powder and other wood fiber materials to polyvinyl chloride (PVC) resin (referred to as PVC-based wood plastic) Composite materials), with good processing properties, mechanical properties, price advantages and excellent woodiness. PVC-based wood-plastic composite material has low density and higher mechanical strength than wood, so it can be used instead of wood in packaging, load-bearing and other fields; in addition, the raw materials used are mainly forestry and agricultural wastes, so it is an economical and environmentally friendly material. There is great potential for applications in the fields of architecture, decoration, and furniture. [0003] Although polyvinyl chloride (PVC...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08K5/57B29C47/40B29C47/92C08L51/06C08K5/541B29C48/92B29C48/40
CPCB29C48/92B29C2948/92704B29C2948/92895B29C2948/92904B29C48/40
Inventor 王清文白晓艳隋淑娟
Owner NORTHEAST FORESTRY UNIVERSITY
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