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Flame-retardant wood-plastic composite and preparation method thereof

A wood-plastic composite material and flame-retardant technology, which is applied in the field of wood-plastic composite materials and their preparation, can solve the problems of poor mechanical properties of wood-plastic composite materials and large smoke of halogen-containing flame retardants, and achieve mechanical properties and flame retardancy Good performance, good flame retardancy and mechanical properties, good compatibility

Active Publication Date: 2009-11-04
JIANGSU KENTIER WOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the halogen-containing flame retardant used in the existing flame-retardant wood-plastic composite material has a large amount of smog, and ammonium polyphosphate is the main body of the flame retardant, which is not suitable for the preparation and preparation of wood-plastic composite materials with high molding processing temperature requirements. The problem of poor mechanical properties of wood-plastic composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Specific Embodiment 1: In this embodiment, the flame-retardant wood-plastic composite material consists of 100-300 parts by weight of modified waste plastic, 100-600 parts of wood fiber, 15-100 parts of intumescent flame retardant, 0.75-20 parts of lubricant and 1-10 parts of additives; among them, the intumescent flame retardant consists of 18-22 parts of halogen-free flame retardant, 1-8 parts of starch, 0.5 ~3 servings of 4 It is made of molecular sieve and 1-10 parts of zinc borate.

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment is different from Embodiment 1 in that the lubricant is one of stearic acid, paraffin wax, polyethylene wax or a combination of several of them. Others are the same as the first embodiment.

[0013] In this embodiment, when the lubricant is a mixture, various lubricants may be mixed in any ratio.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the auxiliary agent is an antioxidant, a plasticizer or a colorant; wherein the antioxidant is composed of 2,6-di-tert-butyl-4-methyl One or a combination of phenol, 2,2'-methylene-bis(4-methyl-6-tert-butyl)phenol, 2,6-di-tert-butyl-4-methylphenol ; The plasticizer is dioctyl phthalate or dibutyl phthalate; the colorant is titanium dioxide, carbon black, iron red, phthalocyanine green or phthalocyanine blue. Others are the same as those in Embodiment 1 or 2.

[0015] In this embodiment, when the antioxidant is a mixture, various antioxidants can be mixed in any ratio.

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Abstract

The invention provides a flame-retardant wood-plastic composite and a preparation method thereof, which relates to a wood-plastic composite and the preparation method thereof. The invention solves the problems that the halogen-containing flame retardant in the existing flame-retardant wood-plastic composite releases a great amount of smoke, ammonium polyphosphate as the main body of the flame retardant is unsuitable for preparing the wood-plastic composite with the requirement of high temperature for contour machining, and the wood-plastic composite prepared has poor mechanical properties. The flame-retardant wood-plastic composite is made of modified waste plastic, wood fiber, intumescent flame retardant, lubricant and auxiliary agent. The preparation method of the flame-retardant wood-plastic composite comprises the following steps of: 1. weighing raw materials; 2. pretreating the wood fiber; 3. obtaining premix compound by mixing the raw materials; 4. preparing wood-plastic composite fusant by the melting compounding of the premix compound; 5. obtaining the flame-retardant wood-plastic composite by extrusion, injection, and thermocompression or compression molding. The intumescent flame retardant of the invention is suitable for preparing the wood-plastic composite with the requirement of high machining temperature. The flame-retardant wood-plastic composite has the advantages of good flame retardancy and mechanical properties, and little smoke release.

Description

technical field [0001] The invention relates to a wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composites are composite materials made of wood fiber materials and thermoplastics as the main raw materials. It has the advantages of long service life, beautiful appearance, renewable, low cost, insect-proof, anti-corrosion, anti-slip, sprayable, higher hardness than pure plastic products, and can be processed, bonded and fixed like wood, especially when using When waste plastics and wood processing residues or straw are used as the main raw materials, they also have outstanding advantages in resource utilization and environmental protection. It is precisely because of the many advantages of wood-plastic composite materials that wood-plastic composite materials are widely used in many fields, such as building materials for doors and windows, floors, walls, ship materials, fence materials, furniture materials, automo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L51/06C08K13/02C08K5/3492
Inventor 王清文房轶群高华隋淑娟王海刚宋永明
Owner JIANGSU KENTIER WOOD
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