Wood-plastic composite material using silane-modified boehmite as flame retardant and preparation method thereof

A wood-plastic composite material and silane modification technology, applied in the field of wood-plastic composite material and its preparation, can solve the problems of affecting the processing performance and mechanical properties of materials, large addition amount, etc., and achieve the enhancement of thermal conductivity, tensile strength, The effect of improving flame retardant properties

Inactive Publication Date: 2019-08-16
TAISHAN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the problems existing in the prior art are: adding boehmite to wood-plastic composite materials, first, the addition amount is large, and second, it affects the processing performance and mechanical properties of the material

Method used

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  • Wood-plastic composite material using silane-modified boehmite as flame retardant and preparation method thereof
  • Wood-plastic composite material using silane-modified boehmite as flame retardant and preparation method thereof

Examples

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preparation example Construction

[0028] like figure 1 As shown, the preparation method of the wood-plastic composite material using silane-modified boehmite as a flame retardant provided by the embodiment of the present invention includes the following steps:

[0029] S101. Put 90-100 parts of boehmite in deionized water by weight, disperse it by ultrasonic for 30 minutes to make it evenly dispersed, add 1-2 parts of vinyltrimethoxysilane, 0.5-2 parts of dodecyltrimethoxy React the silane mixture at 60°C for 30 minutes, then raise the temperature to 150°C, continue to react for 15 minutes, then filter under reduced pressure, put the filtrate in an oven, dry at 110°C for 4 hours, and grind it into powder to obtain silane-modified boehmite ;

[0030] S102. Weigh the following raw materials by weight: 40-70 parts of wood flour, 30-60 parts of polypropylene, 3-10 parts of VTES-g-PP coupling agent, 15-40 parts of silane-modified boehmite prepared by S101 , 5-10 parts of cetyltrimethylammonium bromide and 0.5-1 p...

Embodiment 1

[0035] The wood-plastic composite material using silane-modified boehmite as a flame retardant provided by the embodiment of the present invention consists of 60 parts of wood powder, 40 parts of polypropylene, 6 parts of VTES-g-PP coupling agent, 25 parts of Silane-modified boehmite, 8 parts cetyltrimethylammonium bromide and 1 part antioxidant.

Embodiment 2

[0037] The wood-plastic composite material using silane-modified boehmite as a flame retardant provided by the embodiment of the present invention consists of 60 parts of wood powder, 40 parts of polypropylene, 6 parts of VTES-g-PP coupling agent, 30 parts of Silane-modified boehmite, 8 parts cetyltrimethylammonium bromide and 1 part antioxidant.

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Abstract

The invention belongs to the technical field of composite material preparation, and in particular relates to a wood-plastic composite material using silane-modified boehmite as a flame retardant and a preparation method thereof. The wood-plastic composite material is composed of wood powder, polypropylene, VTES‑g‑PP Made of coupling agent, silane-modified boehmite, cetyltrimethylammonium bromide and antioxidant; the preparation method includes: compounding vinyltrimethoxysilane and dodecyltrimethoxysilane , Condensation reaction with the more active hydroxyl groups in boehmite, introducing silicon vinyl and silicon dodecyl groups into boehmite, so that it has good hydrophobic properties, and strengthens the relationship between boehmite and non-polar polypropylene Compatibility, but also play its synergistic flame retardant effect. The silane-modified boehmite flame retardant prepared by the invention has good thermal stability and high decomposition temperature, is suitable for the preparation of wood-plastic composite materials with high processing temperature requirements, is non-toxic and smokeless, and meets environmental protection requirements.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a wood-plastic composite material using silane-modified boehmite as a flame retardant and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a green and environmentally friendly new material formed by recombining and compounding agricultural and forestry waste wood materials and plastics or recycled plastics. It is widely used in outdoor decoration, guardrails, automotive materials and other fields. It is a solution to the current lack of wood resources and An effective way to reuse waste plastics. However, its disadvantage is that both wood powder and thermoplastics are flammable, so the wood-plastic composite material prepared by the two is also a flammable material, and there are certain safety hazards in the direct application of the wood-plastic composite material. Flame retardant treatment is on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L23/12C08L51/06C08K13/06C08K9/06C08K3/34C08K5/19C08K5/134C08K5/372
CPCC08L97/02C08L2201/02C08L2205/03C08L23/12C08L51/06C08K13/06C08K9/06C08K3/34C08K5/19C08K5/1345C08K5/372
Inventor 姜洪丽吴秀勇施成涛
Owner TAISHAN MEDICAL UNIV
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