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 a large number of black smoke, toxic gas and high flammability, and achieves the effects of simple preparation method, easy operation and low equipment requirements.

Inactive Publication Date: 2010-04-14
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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Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0013] Specific embodiment 1: In this embodiment, the wood fiber-polyvinyl chloride composite material is 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; among them, the intumescent flame retardant is composed of pentaerythritol, ammonium polyphosphate and melamine in a ratio of 3:8 : 6 mass ratio composition, 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, which is easy to be pyrolyzed and carbonized under acid-catalyzed conditions, so the lignocellulosic itself can also be used as an intumescent flame retardant. As an auxiliary carbon forming agent, it improves the flame retardant effect of the...

specific Embodiment approach 2

[0015] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the wood fiber-polyvinyl chloride composite material also includes 0.5 to 15 parts of lubricant, 6 to 195 parts of impact modifier, 0.2-6 parts of colorant and / or 0.2-13 parts of antioxidant. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the lubricant is stearic acid, calcium stearate, zinc stearate, paraffin wax, polyethylene wax or chlorinated paraffin. Others are the same as the second embodiment.

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Abstract

The invention relates to a wood fiber-PVC composite material and a preparation method thereof, and relates to the composite material and the preparation method and solves the problem that: the wood fiber-PVC composite material has high combustibility and can produce a plurality of black smoke and noxious gas when in burning. The wood fiber-PVC composite material is mainly formed by weight part asfollow: 100 to 600 parts of PVC resin, 30 to 700 parts of wood fiber material, 3 to 145 parts of expansion flame retardant, 1 to 55 parts of copper oxide, 6 to 75 parts of heat stabilizer, 4 to 60 parts of plasticizer and 4 to 65 parts of compatibilizer. The preparation method is as follows: firstly, the material is mixed in advance; secondly, the material is squeezed out for shaping. The wood fiber-PVC composite material of the invention is tested according to the GB / T8924-2005 standard; the wood fiber-PVC composite material of the invention has an oxygen index bigger than 35 percent, has longignition time and does not produce drop melting, and belongs to nonflammable material. The preparation method for the wood fiber-PVC composite material of the invention is simple and easy for operati on, has low requirement to devices and is convenient for spreading 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 (PVC-based wood-plastic for short). Composite materials), with good processing performance, mechanical properties, price advantage and excellent wood feeling. Due to its low density and higher mechanical strength than wood, PVC-based wood-plastic composite materials can be used instead of wood in packaging, load-bearing and other fields; in addition, the main raw materials for preparation are forestry and agricultural waste, so it is an economical and environmentally friendly material. It has great application potential in the fields of architecture, decoration, furniture and so on. [0003] Although polyviny...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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