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Preparation method of polyphenylene sulfide composite material suitable for boundary lubrication interval

A composite material and boundary lubrication technology, applied in the field of composite material preparation, can solve the problems of public reports of nano-zinc oxide modified PPS-based materials, poor wear resistance, large friction coefficient of pure PPS resin, etc., to make up for the lack of bearing capacity, The effect of high production efficiency and wide application potential

Inactive Publication Date: 2021-07-27
青岛中科润持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

However, pure PPS resin has a large friction coefficient and poor wear resistance, and often requires reasonable material modification according to service conditions
However, there are no published reports on nano-ZnO-modified PPS-based materials

Method used

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  • Preparation method of polyphenylene sulfide composite material suitable for boundary lubrication interval
  • Preparation method of polyphenylene sulfide composite material suitable for boundary lubrication interval

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 Nano-zinc oxide particle-filled polyphenylene sulfide material preparation method:

[0040] (1) drying the nano-zinc oxide particles at 70° C. for 10 h;

[0041] (2) Pre-dry the PPS pellets at 120°C for 3 hours;

[0042] (3) Using a twin-screw extruder to disperse and granulate nano zinc oxide particles in the PPS resin matrix. Barrel temperature 290°C-320°C, screw speed 200rpm;

[0043] (4) pre-drying the pellets obtained in step (3) at 120° C. for 3 hours;

[0044] (5) Injection molding the dried pellets. The barrel temperature is 290°C-320°C, and the mold temperature is 140°C.

[0045] In the prepared composite material, the volume fraction of nano zinc oxide particles is 3%, and the volume fraction of PPS resin matrix is ​​97%.

Embodiment 2

[0046] Example 2 Preparation method of nano zinc oxide particles and chopped carbon fiber filled polyphenylene sulfide material:

[0047] (1) drying the nano-zinc oxide particles and chopped carbon fibers at 70° C. for 10 h;

[0048] (2) Pre-dry the PPS pellets at 120°C for 3 hours;

[0049] (3) Dispersing nano zinc oxide particles and carbon fibers in the PPS resin matrix by a twin-screw extruder and granulating them. Barrel temperature 290°C-320°C, screw speed 200rpm;

[0050] (4) pre-drying the pellets obtained in step (3) at 120° C. for 3 hours;

[0051] (5) Injection molding the dried pellets. The barrel temperature is 290°C-320°C, and the mold temperature is 140°C.

[0052] In the prepared composite material, the volume fraction of nano zinc oxide particles is 3%, the volume fraction of carbon fiber is 10%, and the volume fraction of PPS resin matrix is ​​97%.

Embodiment 3

[0053] Example 3 Preparation method of nano zinc oxide particles and chopped glass fiber filled polyphenylene sulfide material:

[0054] (1) drying the nano zinc oxide particles and chopped glass fibers at 70°C for 10h;

[0055] (2) Pre-dry the PPS pellets at 120°C for 3 hours;

[0056] (3) Dispersing nano-zinc oxide particles and glass fibers in the PPS resin matrix by a twin-screw extruder and granulating them. Barrel temperature 290°C-320°C, screw speed 200rpm;

[0057] (4) pre-drying the pellets obtained in step (3) at 120° C. for 3 hours;

[0058] (5) Injection molding the dried pellets. The barrel temperature is 290°C-320°C, and the mold temperature is 140°C.

[0059]In the prepared composite material, the volume fraction of nano zinc oxide particles is 3%, the volume fraction of glass fiber is 10%, and the volume fraction of PPS resin matrix is ​​97%.

[0060] Test method and result of friction coefficient and wear rate

[0061] Using polyalphaolefin base oil as t...

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Abstract

The invention discloses a preparation method of a polyphenylene sulfide composite material suitable for a boundary lubrication interval. The preparation method comprises the following steps: dispersing nanometer zinc oxide particles into a chopped fiber reinforced PPS material by using a twin-screw extruder, and finally carrying out injection molding. In the boundary lubrication interval, the friction and wear of the material are remarkably reduced by adding the nanometer zinc oxide particles. Compared with pure PPS resin, the wear rate of the PPS material filled with the nanometer zinc oxide particles and the chopped glass fibers at the same time is reduced by about 71%. Different from conventional solid lubricants, nanometer zinc oxide has high friction chemical activity, and a friction chemical reaction product of nanometer zinc oxide promotes growth of a transfer film, so the defect of insufficient bearing capacity of a lubricating oil film can be overcome. The PPS-based composite material disclosed by the invention can be used for injection molding production of sliding shaft sleeves, sliding blocks, thrust washers and the like serving in boundary lubrication intervals, and is high in cost performance and great in application potential.

Description

technical field [0001] The invention relates to the field of polymer composite materials, and relates to a method for preparing composite materials suitable for boundary lubrication conditions. Background technique [0002] Many moving mechanisms in modern equipment often serve in the boundary lubrication zone, where the lubricating oil film does not play a significant bearing role, and the load is mainly borne by the solid-solid contact, which poses challenges to the tribological properties of the friction pair materials. The development of high reliability, Long-life friction pair materials have important practical significance for improving the service life and performance of motion mechanisms. Polymer materials have the characteristics of self-lubricating properties and strong designability. Polymer self-lubricating materials are being used more and more in modern equipment. During the friction process, the in-situ formation of a stable transfer film at the polymer-meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K3/22C08K7/06C08K7/14C08J5/04
CPCC08K3/22C08J5/042C08J5/043C08J2381/02C08K2003/2296C08K2201/011C08K2201/005C08L81/02
Inventor 刘曼隋武
Owner 青岛中科润持新材料科技有限公司
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