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Wear-resistant polypropylene composite material and preparation method thereof

A technology of composite materials and wear-resistant materials, which is applied in the field of wear-resistant polypropylene composite materials and its preparation, can solve the problem of large addition, high viscosity and density of composite materials, and the influence of wear-resistant modifiers on the adhesion of polypropylene matrix And other issues

Active Publication Date: 2020-06-05
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used materials for wear-resistant modification of polypropylene mainly include graphite, molybdenum disulfide, etc., but their addition amount is generally relatively large, which will bring some defects to polypropylene materials: one will lead to higher viscosity and density of composite materials The second is that it will affect the adhesion between the wear-resistant modifier and the polypropylene matrix; the third is that it also has a significant impact on the mechanical properties of the composite material, which is not conducive to its application

Method used

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  • Wear-resistant polypropylene composite material and preparation method thereof
  • Wear-resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Heat and calcinate 25 parts of mica powder at 500°C for 10 minutes, then heat up to 800°C for 30 minutes, and cool to room temperature; add 6 parts of coupling agent A-172 and stir evenly, then add 4 parts of nano molybdenum disulfide and 1 part of polytetrafluoroethylene, and continue to stir to obtain a wear-resistant material.

[0022] (2) Weigh 100 parts of dry polypropylene, 5 parts of polypropylene grafted maleic anhydride, 20 parts of wear-resistant material, 0.05 part of antioxidant 1098, 0.05 part of antioxidant 168, and 0.2 part of lubrication by weight. Agent EBS, mixed and added to the extruder, extruded through the extruder, water-cooled and then cut into pellets. Among them, the processing temperature of the extruder is 150°C, 180°C, 190°C, 210°C, 220°C, 220°C from the feeding port to the die port, the main engine speed is 180rpm, and the vacuum degree is -0.03MPa.

Embodiment 2

[0024] (1) Heat and calcinate 15 parts of mica powder at 600°C for 5 minutes, then heat up to 900°C for 15 minutes, and cool to room temperature; add 3.6 parts of coupling agent A-172 and stir evenly, then add 2 parts of nano molybdenum disulfide and 1 part of polytetrafluoroethylene, and continue to stir to obtain a wear-resistant material.

[0025] (2) Weigh 100 parts of dry polypropylene, 10 parts of polypropylene grafted maleic anhydride, 10 parts of wear-resistant material, 0.1 part of antioxidant 1098, 0.1 part of antioxidant 168, and 0.5 part of lubrication by weight. Add white oil to the extruder after mixing, extrude through the extruder, cool with water and cut into pellets. Among them, the processing temperature of the extruder is 150°C, 180°C, 190°C, 200°C, 210°C, and 210°C from the feeding port to the die port, the main engine speed is 200rpm, and the vacuum degree is -0.07MPa.

Embodiment 3

[0027] (1) Heat and calcinate 40 parts of mica powder at 500°C for 10 minutes, then heat up to 800°C for 30 minutes, and cool to room temperature; add 8.8 parts of coupling agent A-172 and stir evenly, then add 3 parts of nano molybdenum disulfide and 1 part of polytetrafluoroethylene, and continue to stir to obtain a wear-resistant material.

[0028] (2) Weigh 100 parts of dry polypropylene, 8 parts of polypropylene grafted maleic anhydride, 15 parts of wear-resistant material, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, and 0.1 part of lubrication by weight. Polypropylene wax, mixed and added to the extruder, extruded through the extruder, water-cooled and cut into pellets. Among them, the processing temperature of the extruder is 160°C, 170°C, 180°C, 200°C, 220°C, 220°C from the feeding port to the die port, the main engine speed is 350rpm, and the vacuum degree is -0.05MPa.

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Abstract

The invention discloses a wear-resistant polypropylene composite material and a preparation method thereof. The wear-resistant polypropylene composite material is composed of polypropylene, polypropylene grafted maleic anhydride, a wear-resistant material, an antioxidant and a lubricant, nano molybdenum disulfide, polytetrafluoroethylene, coupling agent A-172 and mica powder are mixed to prepare the wear-resistant material, and the wear-resistant material is added into the polypropylene composite material, so that the friction coefficient of the polypropylene composite material can be greatlyreduced, and the wear resistance of the polypropylene composite material is obviously improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a wear-resistant polypropylene composite material and a preparation method thereof. Background technique [0002] With the advancement of lightweight and cost reduction, metals have been replaced by various composite materials. Compared with metal components, composite materials have poor wear resistance, resulting in a lower service life. At present, steering components in the fields of automobile engines, cylinder piston parts, textile machinery, mining machinery, etc. are all replaced by composite materials such as polypropylene and polyether ether paulownia. [0003] Polypropylene is a non-toxic, odorless, tasteless milky white highly crystalline polymer with a density of only 0.90-0.91g / cm 3 , is currently one of the lightest varieties of all plastics. It is particularly stable to water, the water absorption rate in water is only 0.01%, and the molecular weight...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08L27/18C08K3/30C08K3/34C08K9/06C08K5/526C08K7/00C08K9/00C08K13/06
CPCC08L23/12C08K2201/011C08K2003/3009C08L2205/03C08L2205/035C08L51/06C08L27/18C08K3/30C08K3/34C08K9/06C08K5/526C08K7/00C08K9/00C08K13/06
Inventor 杨桂生方永炜梁娜王华邵灵芝宋伟华
Owner HEFEI GENIUS NEW MATERIALS
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