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High-toughness and high-hardness composite material and preparation method thereof

A composite material and high-hardness technology, applied in the field of materials, can solve problems such as the incompatibility of surface hardness and toughness, insufficient fluidity of polycarbonate processing, and large thickness of composite plates, so as to improve processing and forming performance, surface finish, light weight, The effect of a large surface friction coefficient

Active Publication Date: 2019-04-02
GUANGDONG GERUI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unmodified polycarbonate has disadvantages such as insufficient processing fluidity, poor stress crack resistance, poor chemical resistance, poor wear resistance, and inability to balance surface hardness and toughness.
Polymethylmethacrylate (PMMA) is relatively cheaper than polycarbonate. Blending with PC can improve the friction resistance, solvent resistance and processing performance of PC. At the same time, PC / PMMA alloy has a special pearlescent color However, the hardness and toughness of the PC / PMMA alloy materials developed on the market are relatively low, and their fluidity is poor. Poor fluidity, difficult to process and shape, high defect rate of products
In the prior art, there is still a polymethyl methacrylate sheet directly on the surface of the polycarbonate sheet to improve the impact resistance of the material, but the thickness of the composite sheet after the two sheets are combined is relatively high, and the defect rate is relatively high

Method used

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  • High-toughness and high-hardness composite material and preparation method thereof
  • High-toughness and high-hardness composite material and preparation method thereof
  • High-toughness and high-hardness composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-toughness and high-hardness composite material, comprising the following raw materials in parts by weight:

[0036]

[0037] The reinforcing filler is a mixture of hollow glass microspheres and nano-boron fibers at a weight ratio of 5:1; the toughening modifier is styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride in a weight ratio It is a 3:1 mixture.

[0038] Wherein, the hollow glass microspheres are silica hollow glass microspheres, and the particle diameter of the hollow glass microspheres is 100 nm; the diameter of the nano-boron fibers is 80 nm, and the length is 10 μm.

[0039] Wherein, the coupling agent is 3-aminopropyltriethoxysilane coupling agent; the lubricant is molybdenum disulfide; the compatibilizer is styrene acrylonitrile random copolymer.

[0040] The preparation method of the above-mentioned high-toughness and high-hardness composite material comprises the following steps:

[0041] (1) Mix t...

Embodiment 2

[0045] A high-toughness and high-hardness composite material, comprising the following raw materials in parts by weight:

[0046]

[0047] Among them, the reinforcing filler is a mixture of hollow glass microspheres and nano-boron fibers in a weight ratio of 6.5:2; the toughening modifier is styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride The mixture is composed in a weight ratio of 3.5:1.

[0048] Wherein, the hollow glass microspheres are silica hollow glass microspheres, and the particle diameter of the hollow glass microspheres is 200 nm; the diameter of the nano-boron fibers is 140 nm, and the length is 12.5 μm.

[0049] Wherein, the coupling agent is N-(2-aminoethyl)-3-aminopropyltrimethoxysilane coupling agent; the lubricant is graphite; the compatibilizer is styrene acrylonitrile random copolymer.

[0050] The preparation method of the above-mentioned high-toughness and high-hardness composite material comprises the ...

Embodiment 3

[0055] A high-toughness and high-hardness composite material, comprising the following raw materials in parts by weight:

[0056]

[0057] The reinforcing filler is a mixture of hollow glass microspheres and nano-boron fibers in a weight ratio of 8:3; the toughening modifier is styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride in a weight ratio It is a 4:1 mixture.

[0058] Wherein, the hollow glass microspheres are silica hollow glass microspheres, and the particle diameter of the hollow glass microspheres is 300 nm; the diameter of the nano-boron fibers is 200 nm, and the length is 15 μm.

[0059] The coupling agent is diethylaminomethyltriethoxysilane; the lubricant is a mixture of molybdenum disulfide and graphite in a weight ratio of 2.5:1; the compatibilizer is maleic anhydride grafted acrylonitrile-butadiene - Styrene terpolymers.

[0060] The preparation method of the above-mentioned high-toughness and high-hardness c...

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Abstract

The invention relates to the technical field of materials, particularly to a high-toughness and high-hardness composite material and a preparation method thereof, wherein the high-toughness and high-hardness composite material comprises the following raw materials by weight: 80-90 parts of polycarbonate, 20-35 parts of polymethyl methacrylate, 15-20 parts of a reinforcing filler, 15-30 parts of atoughening modifier, 5-8 parts of a lubricant, 5-10 parts of a compatibilizer, and 3-7 parts of a coupling agent, wherein the reinforcing filler is a mixture of hollow glass microspheres and nanometerboron fibers, and the toughening modifier is a mixture of a styrene-butadiene thermoplastic elastomer and high-density polyethylene grafted maleic anhydride, such that the toughness and the hardnessof the PC-PMMA composite material can be simultaneously increased, the impact resistance and the tensile strength of the PC-PMMA composite material can be increased, the wear resistance is good, the scratch is not easily generated on surface of the product, the fluidity is high, and the processing molding is easy.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a high-toughness and high-hardness composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an amorphous thermoplastic engineering plastic with excellent performance. It has the characteristics of heat resistance, impact resistance, good dimensional stability, etc., and has good mechanical properties at ordinary operating temperatures. However, unmodified polycarbonate has disadvantages such as insufficient processing fluidity, poor stress crack resistance, poor chemical resistance, poor wear resistance, and incompatibility between surface hardness and toughness. Polymethylmethacrylate (PMMA) is relatively cheaper than polycarbonate. Blending with PC can improve the friction resistance, solvent resistance and processing performance of PC. At the same time, PC / PMMA alloy has a special pearlescent color However, the hardness and to...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L33/12C08L53/02C08L51/06C08K7/28C08K7/06C08K3/30C08K3/04
CPCC08K2003/3009C08K2201/011C08L69/00C08L2205/035C08L33/12C08L53/02C08L51/06C08K7/28C08K7/06C08K3/30C08K3/04
Inventor 郑宇航
Owner GUANGDONG GERUI NEW MATERIALS CO LTD
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