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High-strength wear-resistant polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene materials, can solve the problems of inconvenient practical application and poor wear resistance.

Active Publication Date: 2021-04-20
云南邦辉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the polypropylene materials on the market today have excellent mechanical properties, but in practical applications, we found that in some environments that require high strength, the strength of polypropylene still cannot meet our needs, and its wear resistance is relatively poor. Poor, practical application brings inconvenience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a high-strength wear-resistant polypropylene composite material, comprising the following steps:

[0046] (1) Prepare materials;

[0047] (2) Mix carbon powder and silicon dioxide, add ethanol solution to dissolve, ultrasonically disperse for 1 hour, vacuum dry at 70°C, vacuum sinter under argon atmosphere, sintering temperature is 1400°C, sintering time is 3h, cool with furnace, grind Pulverize, cross 50 mesh sieves, obtain silicon carbide powder;

[0048] (3) Take graphene oxide and calcium nitrate solution, mix and stir for 10 minutes, add isopropanol solution, and ultrasonically disperse for 1 hour to obtain electrolyte;

[0049] The carbon fiber is used as the negative electrode, and the copper sheet is used as the positive electrode, and placed in the electrolyte for electrophoretic deposition. The deposition voltage is 120V, and the deposition time is 1 min. The carbon fiber is taken out, ultrasonically cleaned with deionized water for 5 m...

Embodiment 2

[0059] A method for preparing a high-strength wear-resistant polypropylene composite material, comprising the following steps:

[0060] (1) Prepare materials;

[0061] (2) Mix carbon powder and silicon dioxide, add ethanol solution to dissolve, ultrasonically disperse for 1.5h, vacuum dry at 75°C, vacuum sinter under argon atmosphere, sintering temperature is 1450°C, sintering time is 2.8h, and cool in the furnace , ground and pulverized, and passed through a 50-mesh sieve to obtain silicon carbide powder;

[0062] (3) Take graphene oxide and calcium nitrate solution, mix and stir for 15min, add isopropanol solution, and ultrasonically disperse for 1.5h to obtain electrolyte;

[0063] The carbon fiber is used as the negative electrode, and the copper sheet is used as the positive electrode, and placed in the electrolyte for electrophoretic deposition. The deposition voltage is 145V, and the deposition time is 1.5 minutes. The carbon fiber is taken out, ultrasonically cleaned ...

Embodiment 3

[0072] A method for preparing a high-strength wear-resistant polypropylene composite material, comprising the following steps:

[0073] (1) Prepare materials;

[0074] (2) Mix carbon powder and silicon dioxide, add ethanol solution to dissolve, ultrasonically disperse for 2 hours, vacuum dry at 80°C, vacuum sinter under argon atmosphere, sintering temperature is 1500°C, sintering time is 2.5h, and cool with the furnace. Grinding and pulverizing, passing through a 50-mesh sieve to obtain silicon carbide powder;

[0075] (3) Take graphene oxide and calcium nitrate solution, mix and stir for 20min, add isopropanol solution, and ultrasonically disperse for 2h to obtain electrolyte;

[0076] The carbon fiber is used as the negative electrode, and the copper sheet is used as the positive electrode, and placed in the electrolyte for electrophoretic deposition. The deposition voltage is 160V, and the deposition time is 1 min. The carbon fiber is taken out, ultrasonically cleaned with...

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Abstract

The invention discloses a high-strength wear-resistant polypropylene composite material and a preparation method thereof. The high-strength wear-resistant polypropylene composite material comprises polypropylene, modified carbon fibers, hydroxyapatite, a wear-resistant agent, sodium carbonate, modified filler and the like, the modified carbon fibers are added, and during preparation, graphene oxide is deposited on the surfaces of the carbon fibers through electrophoretic deposition to obtain the pretreated carbon fiber; due to the existence of the graphene oxide, the roughness of the surface of the carbon fiber is greatly improved, the contact area between the carbon fiber and a polypropylene matrix is greatly increased, and the surface of the graphene oxide contains a large number of active groups, so that hydrogen bonds and chemical crosslinking can exist between the graphene oxide and polypropylene; and the interface performance between the pretreated carbon fiber and polypropylene is further improved, so that the mechanical property of the composite material is improved. The preparation method is reasonable in process design and proper in component proportion, and the prepared polypropylene has relatively high strength and wear resistance and excellent mechanical properties, can be applied to multiple fields and is relatively high in practicability.

Description

technical field [0001] The invention relates to the technical field of polypropylene materials, in particular to a high-strength wear-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene, also known as PP, is a colorless, odorless, non-toxic, translucent solid substance. It is also a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic. Chemical properties, heat resistance, electrical insulation, high-strength mechanical properties and good high wear-resistant processing properties, etc., can be used in many fields. [0003] Most of the polypropylene materials on the market today have excellent mechanical properties, but in practical applications, we found that in some environments that require high strength, the strength of polypropylene still cannot meet our needs, and its wear resistance is relatively poor. Poor, pra...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/06C08K9/12C08K9/10C08K9/06C08K9/02C08K7/06C08K3/34C08K7/14C08K7/00C08K3/38C08K3/32
CPCC08K7/06C08K9/02C08K9/10C08K9/06C08K3/34C08K9/04C08K7/14C08K3/32C08K7/00C08K3/38C08K13/06C08K2003/325C08K2201/011C08L23/12Y02E60/10
Inventor 卿洪星
Owner 云南邦辉新材料科技有限公司
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