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Micro foam polystyrene group composite material of wood and plastic, and method of producing the same

A wood-plastic composite material, polystyrene-based technology, applied in the field of micro-foamed wood-plastic composite materials and its preparation, can solve the problems of easy combustion and poor impact resistance, reduce the total smoke release, and improve impact resistance performance, good flame retardancy and smoke suppression effect

Inactive Publication Date: 2008-04-02
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problems of poor impact resistance and easy burning of the current wood-plastic composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Specific embodiment 1: The micro-foamed polystyrene-based wood-plastic composite material of this embodiment is composed of 30 to 70 parts of wood fiber material, 2 to 8 parts of coupling agent, 1 to 8 parts of toughening agent, 0.5 to 0.5 parts by weight. 3 parts lubricant, 70-120 parts polystyrene, 0.5-3 parts foaming agent, 0.5-5 parts auxiliary foaming agent, 10-30 parts flame retardant and 5-15 parts smoke suppressant are mixed and extruded Molded.

specific Embodiment approach 2

[0018] Embodiment 2: The micro-foamed polystyrene-based wood-plastic composite material of this embodiment is composed of 40 parts by weight of wood fiber material, 4 parts of coupling agent, 4 parts of toughening agent, 2 parts of lubricant, and 100 parts of polystyrene. Styrene, 0.5 parts of foaming agent, 1 part of auxiliary foaming agent, 25 parts of flame retardant and 8 parts of smoke suppressant are made by mixing and extrusion molding.

specific Embodiment approach 3

[0019] Specific embodiment 3: The micro-foamed polystyrene-based wood-plastic composite material of this embodiment is prepared as follows: 1. The wood fiber material is pulverized into powder with a particle size of 20-300 mesh, and the pulverized wood is taken in parts by weight. 30~70 parts of fibrous material, 2~8 parts of coupling agent, 1~8 parts of toughening agent, 0.5~3 parts of lubricant, heat mixing for 5~20 minutes at 70~120℃; 2. Mix the materials with heat Cool to 40~60℃, then add 70~120 parts of polystyrene plastic, 0.5~3 parts of foaming agent, 0.5~5 parts of co-foaming agent, 10~30 parts of flame retardant and 5~15 parts of smoke suppressant. 5-20 minutes; 3. Extruding the mixture into an extruder to form a micro-foamed polystyrene-based wood-plastic composite material.

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Abstract

A micro-foaming polystyrene wood-plastic composite material and the preparation method relates to a micro foaming wood-plastic composite material and the preparation method. The present invention solves the problems of poor impact resistance and easy combustion of the current wood-plastic composite material. The present invention is made of wood fiber material, coupling agent, plasticizer, lubricant, polystyrene, foamer, assistant foamer, fire retardants and smoke suppressant according to a weight portion. The preparation method is as follows: first, hot mixing; secondly, cooling and mixing; thirdly, extruding and molding. Then the micro-foaming polystyrene wood-plastic composite material can be made. The micro-foaming polystyrene wood-plastic composite material of the present invention has the advantages of small density, good fire-resistant and smoke-suppression effects, and impact resistance.

Description

Technical field [0001] The invention relates to a micro-foamed wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite material is made of wood fiber materials, such as wood, chaff husk, rice husk, bamboo shavings, hemp, straw, nut hard shells, etc., in the form of powder, fiber or shavings as reinforcements or fillers added to the thermoplastic Among plastics, a new type of composite material obtained by melting and compounding. [0003] In the existing wood-plastic micro-foamed composite material preparation technology, polyvinyl chloride resin is mainly used to prepare the foamed wood-plastic composite material. However, after the waste of PVC composite materials, special technical measures need to be taken for disposal, otherwise it will cause potential harm to the environment and increase the social cost of using PVC composite materials. However, the patent "Wood-plastic foam material and its processing and moldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L97/02C08K5/43C08J9/12B29C47/38C08K3/00B29C48/395B29C48/40
CPCB29C47/40B29C48/40
Inventor 宋永明王清文房轶群
Owner NORTHEAST FORESTRY UNIVERSITY
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