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A kind of carbon fiber reinforced polyethylene composite material and preparation method thereof

A composite material, carbon fiber technology, applied in fiber processing, textiles and papermaking, etc., can solve the problems of poor adhesion performance and limited interface performance of small molecule silane coupling agents

Active Publication Date: 2020-02-07
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the small molecule silane coupling agent in the above method has poor adhesion performance and extremely limited improvement of interfacial performance.

Method used

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  • A kind of carbon fiber reinforced polyethylene composite material and preparation method thereof
  • A kind of carbon fiber reinforced polyethylene composite material and preparation method thereof
  • A kind of carbon fiber reinforced polyethylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of sizing agent

[0044] The composition of the emulsion is by weight percentage: Tween T-20 0.1%, ammonium persulfate 0.1%, methyl methacrylate 70%, N-hydroxyethyl acrylamide 1.8%, lauryl methacrylate 28%

[0045] (1) Preparation of pre-emulsion

[0046] Preliminarily disperse and stir half of the emulsifier, deionized water and the above-mentioned reaction monomers at a stirring speed of 50 rpm for 10 minutes. Further use a high-speed shear dispersing emulsifier to stir at a stirring speed of 8000 rpm to obtain a stable reaction pre-emulsion.

[0047] (2) Polymerization reaction

[0048] Add the remaining emulsifier and a part of the initiator into the reaction medium water, fully stir in the reaction vessel protected by a nitrogen atmosphere and raise the temperature to 70°C. After reaching the reaction temperature, add the pre-emulsion and the remaining initiator dropwise into the reaction kettle. The emulsion was added dropwise for 3 hours, and the i...

Embodiment 2

[0055] Preparation of sizing agent

[0056] The composition of the emulsion is by weight percentage: Tween T-50 2%, ammonium persulfate 2%, butyl acrylate 70%, acrylamide 1%, lauryl methacrylate 25%

[0057] (1) Preparation of pre-emulsion

[0058] Preliminarily disperse and stir half of the emulsifier, deionized water and the above-mentioned reaction monomers at a stirring speed of 300 rpm for 20 minutes. Further use a high-speed shear dispersing emulsifier to stir, and the stirring speed is 10000r rpm to obtain a stable reaction pre-emulsion.

[0059] (2) Polymerization reaction

[0060] Add the remaining emulsifier and a part of the initiator into the reaction medium water, fully stir in the reaction vessel protected by a nitrogen atmosphere and raise the temperature to 50°C. After reaching the reaction temperature, add the pre-emulsion and the remaining initiator dropwise into the reaction kettle. The emulsion was added dropwise for 3 hours, and the initiator was added ...

Embodiment 3

[0067] Preparation of sizing agent

[0068] The composition of the emulsion by weight percentage is: 3% of Span S-20, 3% of ammonium persulfate, 60% of methyl methacrylate, 4% of N-hydroxyethyl acrylamide, 30% of stearyl methacrylate

[0069] (1) Preparation of pre-emulsion

[0070] Preliminarily disperse and stir half of the emulsifier, deionized water and the above-mentioned reaction monomers at a stirring speed of 100 rpm for 15 minutes. Further use a high-speed shear dispersing emulsifier to stir at a stirring speed of 8000 rpm to obtain a stable reaction pre-emulsion.

[0071] (2) Polymerization reaction

[0072] Add the remaining emulsifier and a part of the initiator into the reaction medium water, fully stir in the reaction vessel protected by a nitrogen atmosphere and raise the temperature to 70°C. After reaching the reaction temperature, add the pre-emulsion and the remaining initiator dropwise into the reaction kettle. The emulsion was added dropwise for 4 hours,...

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Abstract

The invention provides a method for preparing a carbon fiber reinforced polyethylene composite material, comprising the following steps: A) immersing carbon fibers in a carbon fiber sizing agent for 1 to 3 minutes at room temperature; the carbon fiber sizing agent is composed of functional hard monomer, propylene Amide and long-carbon side-chain acrylate are prepared by polymerization under the action of an initiator; the functional hard monomer is methyl methacrylate, styrene, ethyl methacrylate, methyl acrylate, ethyl acrylate or Acrylonitrile; B) Add polyethylene, carbon fiber, antioxidant, and lubricant into the internal mixer, 135-160 ° C, knead for 3-5 minutes, and then discharge to obtain mixed rubber; C) Mix the above mixed rubber in turn Hot press molding, cold press qualitative, obtain carbon fiber reinforced polyethylene composite material. The above-mentioned carbon fiber sizing agent has excellent film-forming properties and adhesion, can shorten the impregnation time, plays a good bridging role between carbon fibers and polyethylene matrix, and improves the mechanical properties of composite materials.

Description

technical field [0001] The invention relates to the technical field of carbon fiber composite materials, in particular to a carbon fiber reinforced polyethylene composite material and a preparation method thereof. Background technique [0002] Polyethylene (PE) is a thermoplastic resin with low temperature resistance, abundant raw materials and wide application. However, the low mechanical strength of ordinary polyethylene materials limits its wide application to a certain extent. Carbon fiber is an excellent material with high specific modulus, high specific strength, low density, high temperature resistance, and small thermal expansion coefficient. It is widely used in high-end fields such as aerospace and automobiles. [0003] By combining the advantages of polyethylene and carbon fibers, high-strength, lightweight composite materials can be prepared. However, carbon fibers present a surface chemically inert with low surface energy and few chemical groups. In addition,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L83/04C08L91/06C08L23/28C08K9/08C08K7/06C08K5/134C08J5/06C08F220/14C08F220/58C08F220/56C08F220/18D06M15/285D06M15/29
CPCD06M15/285D06M15/29C08F220/14C08F220/18C08J5/06C08K7/06C08K9/08C08L23/06C08J2323/06C08J2423/28C08J2491/06C08J2483/04C08K2201/016C08F220/1804C08L23/286C08K5/1345C08L91/06C08L83/04C08F220/58C08F220/1818C08F220/56C08F220/1812
Inventor 罗元聪雷彩红张笑晴徐睿杰
Owner GUANGDONG UNIV OF TECH