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Composite material for plastic bearing as well as preparation method and application thereof

A technology of plastic bearings and composite materials, applied in the field of bearings, can solve problems such as affecting the safety of use, high rigidity of materials, and poor self-lubricating properties of materials, and achieve the effect of great application value.

Active Publication Date: 2019-01-25
江苏新孚达复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material has the characteristics of high strength, rigidity, high temperature resistance, and corrosion resistance, but as a wear-resistant part, the self-lubricating property of the material is not good; at the same time, the material is too rigid, and the parts are prone to cracks under impact and vibration. safe to use

Method used

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  • Composite material for plastic bearing as well as preparation method and application thereof
  • Composite material for plastic bearing as well as preparation method and application thereof
  • Composite material for plastic bearing as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a modified nano silicon carbide, the raw materials of which include: 1 part of phenyltrimethoxysilane and 100 parts of nano silicon carbide.

[0037] The preparation method is as follows: each raw material is weighed according to the formula, then mixed at high speed, and reacted to form the modified nano silicon carbide with an average particle diameter of about 40 nm.

Embodiment 2

[0039] This embodiment provides a composite material for plastic bearings, the raw materials of which include: 30 parts of polyphenylene sulfide; 30 parts of polyethersulfone; 40 parts of polyphenylsulfone; 10 parts of carbon fiber; 2 parts of polytetrafluoroethylene (PTFE) 2 parts of modified nano silicon carbide prepared in Example 1; 0.12 parts of antioxidant; 2 parts of copolymer.

[0040] The preparation method is:

[0041] a. Weigh the raw materials according to the formula, put the polyphenylene sulfide, polyethersulfone, and polyphenylsulfone materials into the drying box, set the temperature to 150 degrees, and dry for 4-6 hours;

[0042] b. After drying, the polyphenylene sulfide, polyethersulfone, polyphenylene sulfone and the remaining polytetrafluoroethylene, the modified nano silicon carbide prepared in step (1), antioxidants, and copolymers are put into In the high-speed mixer, mix for 3-8 minutes;

[0043] c. Put the mixture obtained in step b into the main feed hoppe...

Embodiment 3

[0050] This embodiment provides a composite material for plastic bearings, the raw materials of which include: 30 parts of polyphenylene sulfide; 30 parts of polyethersulfone; 40 parts of polyphenylsulfone; 20 parts of carbon fiber; 2 parts of polytetrafluoroethylene (PTFE) 3 parts of modified nano silicon carbide prepared in Example 1; 0.12 parts of antioxidant; 2 parts of copolymer.

[0051] The preparation method is the same as in Example 2.

[0052] Injection molding samples, process settings: drying temperature 140-160 degrees, drying time 4-6 hours, injection molding machine front temperature 360 ​​degrees, middle section temperature 350 degrees, rear temperature 340 degrees, nozzle temperature 350 degrees, back pressure 3MPa, injection pressure 100MPa, injection speed 50mm / s, mold temperature 120~150℃.

[0053] The measured properties of injection molded samples are shown in Table 2 below.

[0054] Table II

[0055]

[0056]

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Abstract

The invention discloses a composite material for a plastic bearing as well as a preparation method and application thereof. The composite material is prepared from polyphenylene sulfide, carbon fibers, polyether sulfone, polyphenylsulfone, polytetrafluoroethylene, modified nano silicon carbide, an antioxidant and a copolymer, wherein monomers of the copolymer must comprise styrene and maleic anhydride and further selectively comprise methacrylate and / or glycidyl methacrylate, and the modified nano silicon carbide is prepared by carrying out reaction on phenyl trimethoxysilane and nano siliconcarbide. The preparation method comprises the following steps that 1) the phenyl trimethoxysilane and the nano silicon carbide are mixed for reaction so as to prepare the modified nano silicon carbide; and 2) the polyphenylene sulfide, the polyether sulfone and the polyphenylsulfone are dried and then are mixed with the prepared modified nano silicon carbide and the rest raw materials, and fusingand extruding are carried out so as to obtain the composite material and the plastic bearing prepared from the composite material. According to the composite material for the plastic bearing as well as the preparation method and application thereof, the prepared plastic bearing is suitable for complex working conditions and has the advantages of being high-temperature-resistant, wear-resistant, self-lubricating, flame-retardant and relatively low in cost compared with PEEK and PAI materials.

Description

Technical field [0001] The invention belongs to the technical field of bearings, in particular to plastic bearings, and in particular to a composite material for plastic bearings and a preparation method and application thereof. Background technique [0002] At present, plastic wear-resistant parts are gradually replacing metal materials and have the characteristics of light weight, wear resistance, low noise, self-lubricating, corrosion resistance, shock absorption, long service life, and low maintenance costs. Under ordinary working conditions, nylon, polyoxymethylene (POM), polyketone, ultra-high molecular weight polyethylene and other materials can solve the problem, but in harsh environment fields such as high temperature, high pressure, radiation environment, high speed, high vacuum, etc., ordinary Engineering plastics cannot meet the requirements, and special engineering plastics such as polybenzimidazole (PBI) and polyimide (PAI) must be used, but these materials are too ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/06C08L81/02C08L27/18C08K7/06C08K9/06C08K3/34
CPCC08K2201/003C08K2201/011C08L81/06C08L2201/04C08L2205/025C08L2205/035C08L81/02C08L27/18C08K7/06C08K9/06C08K3/34
Inventor 杨辉张建平崔子琴范传新
Owner 江苏新孚达复合材料有限公司
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