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Preparation method of wood-plastic composite material for doors and windows

A wood-plastic composite material, door and window technology, applied in the field of door and window manufacturing, can solve problems such as high cost, environmental pollution, unfavorable ecological environmental protection, etc., and achieve the effects of improving strength and toughness, reducing environmental pollution, and being beneficial to ecological and environmental protection.

Active Publication Date: 2014-04-30
SHENZHEN PASON ALUMINUM IND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The profiles used for doors and windows in the prior art are usually made of a single material, which has poor performance in terms of thermal insulation, moisture resistance, acid and alkali resistance, antistatic, and insect resistance. Very few profiles made of composite materials have poor strength, The toughness, water absorption rate and shrinkage expansion rate are also not ideal. Due to improper use of materials, it will lead to structural design problems of profiles, such as: complex structure, high cost, easy damage and wear between parts, and during installation. , additional installation tools are required for assembly, the assembly process is cumbersome, and the stability performance is not good, etc.
In addition, the materials used in the existing profiles will cause environmental pollution during the preparation process, which is not conducive to ecological protection

Method used

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  • Preparation method of wood-plastic composite material for doors and windows

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preparation example Construction

[0019] The preparation method of the wood-plastic composite material used for doors and windows in this embodiment comprises the following steps:

[0020] Step S1, crushing plant fibers into fiber powder, heating and drying at 120-150°C for 5-10 hours, cooling down to room temperature, adding a coupling agent and then heating to 120-150°C for surface modification to form wood fibers; Heat and dry the glass fiber, add dispersant and coupling agent to modify the surface at 80-120°C to form glass fiber; clean the thermoplastic, dry it thoroughly, and then granulate it to form thermoplastic;

[0021] Step S2, adding stabilizers, toughening agents, plasticizers and inorganic fillers to wood fibers, glass fibers and thermoplastics and mixing uniformly, wherein: the mixing temperature is 25°C, and the mixing time is 120s;

[0022] Step S3, extruding and granulating to form new recycled wood-plastic materials.

[0023] During specific implementation, step S1 includes the preparation ...

Embodiment 1

[0041] Example 1: 50 parts of thermoplastic (PE), 25 parts of plant fiber, 20 parts of inorganic filler, 1 part of coupling agent, and 2 parts of stabilizer. The resulting wood-plastic material has a bending strength of 35MPa and an impact strength of 16 kJ / m 2 .

Embodiment 2

[0042] Example 2: 50 parts of thermoplastic (PVC), 25 parts of plant fiber, 20 parts of inorganic filler, 1 part of coupling agent, and 2 parts of stabilizer. The bending strength of the wood-plastic material made is 32MPa, and the impact strength is 18kJ / m 2 .

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Abstract

The invention discloses a preparation method of a wood-plastic composite material for doors and windows. The preparation method comprises the following steps: crushing plant fibers into fiber powder, heating and drying the fiber powder at the temperature of 120-150 DEG C for 5-10 hours, cooling the dried fiber powder to room temperature, adding a coupling agent, and heating the mixture to 120-150 DEG C for surface modification; heating and drying glass fibers, and adding a dispersing agent and a coupling agent for surface modification at the temperature of 80-120 DEG C; cleaning thermoplastic plastic, thoroughly drying the thermoplastic plastic, and performing granulation; adding a stabilizing agent, a toughening agent, a plasticizer and inorganic fillers into wood fibers, the glass fibers and the thermoplastic plastic, and uniformly mixing at the mixing temperature of 25 DEG C for 120s; performing extrusion granulation to form the new wood-plastic reclaimed material. According to the preparation method of the wood-plastic composite material for doors and windows, the strength and toughness of the wood-plastic composite material can be improved, and the water absorption rate and the shrinkage-expansion rate of the wood-plastic composite material are reduced; furthermore, the environmental pollution can be further alleviated, and the ecological environmental protection is realized.

Description

technical field [0001] The invention relates to the field of door and window manufacturing, in particular to a preparation method of wood-plastic composite materials used for doors and windows. Background technique [0002] The profiles used for doors and windows in the prior art are usually made of a single material, which has poor performance in terms of thermal insulation, moisture resistance, acid and alkali resistance, antistatic, and insect resistance. Very few profiles made of composite materials have poor strength, The toughness, water absorption rate and shrinkage expansion rate are also not ideal. Due to improper use of materials, it will lead to structural design problems of profiles, such as: complex structure, high cost, easy damage and wear between parts, and during installation. , requires additional installation tools for assembly, the assembly process is cumbersome, and the stability performance is not good. In addition, the materials used in the existing p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/00B29B9/06C08L23/06C08L27/06C08L97/02C08K13/06C08K9/06C08K7/14C08K5/1515C08K3/26C08K3/34
CPCB29B9/06B29C48/022C08K2201/003C08L23/06C08L23/12C08L27/06C08L2205/035C08L2205/16C08L97/02C08L23/286C08L33/08C08K13/06C08K7/14
Inventor 罗超杨军
Owner SHENZHEN PASON ALUMINUM IND SCI & TECH CO LTD
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