Polyphenylene sulfide-based self-lubricating multi-component composite material and preparation method thereof

A technology of polyphenylene sulfide and composite material is applied in the field of polyphenylene sulfide-based self-lubricating multi-component composite material and its preparation, so as to avoid direct scratching, have broad application prospects and improve wear resistance.

Pending Publication Date: 2022-02-25
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, nano-serpentine can also be used as a functional filler to improve the tribological properties of metal matrix composites. Patent CN106399764A reports that adding silicon powder and a small amount of serpentine powder to Al-based materials can effectively improve the tribological properties of aluminum-based composites; However, there is no report on its use as a functional filler for filling modified fiber-reinforced composites

Method used

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  • Polyphenylene sulfide-based self-lubricating multi-component composite material and preparation method thereof
  • Polyphenylene sulfide-based self-lubricating multi-component composite material and preparation method thereof
  • Polyphenylene sulfide-based self-lubricating multi-component composite material and preparation method thereof

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preparation example Construction

[0024] The preparation method of the composite material: firstly weigh each raw material according to the ratio; then dry each raw material at 120°C for 5h to 12h; secondly, dry the dried nano-scale serpentine, reinforced fiber, polyphenylene sulfide powder or The granules and or solid lubricants are fully mixed with a high-speed mixer, or melted and blended with a twin-screw extruder and extruded to granulate; finally, the obtained mixed powder or granules are hot-pressed or injected to obtain a compound Material.

[0025] The working conditions of the twin-screw extruder refer to the heating temperature of the first zone 320°C~325°C, the heating temperature of the second zone 330°C~335°C, the heating temperature of the third zone 340°C~345°C, the heating temperature of the fourth zone 350°C~355°C, The mold temperature is 130°C~150°C, the injection pressure is 50MPa, the screw speed is 40rpm~150rpm, and the back pressure is 1MPa~4MPa.

Embodiment 1

[0026] Example 1 A polyphenylene sulfide-based self-lubricating multi-component composite material

[0027] Put 85L of polyphenylene sulfide matrix, 10L of carbon fiber, and 5L of serpentine in an oven for drying, drying for 5 hours at a drying temperature of 120°C; then use a twin-screw extruder to melt, blend and extrude them Granulation and injection molding; among them, the heating temperature of the first zone of the twin-screw extruder is 320~325℃, the heating temperature of the second zone is 330℃~335℃, the heating temperature of the third zone is 340℃~345℃, and the heating temperature of the fourth zone is 350℃~ 355°C, mold temperature of 150°C, injection pressure of 50MPa, screw speed of 150rpm, and back pressure of 1MPa.

Embodiment 2

[0028] Example 2 A polyphenylene sulfide-based self-lubricating multi-component composite material

[0029] 80L of polyphenylene sulfide matrix, 10L of carbon fiber, 2L of serpentine and 8L of graphite were dried in an oven for 12 hours at a temperature of 120°C; they were melt-blended and extruded using a twin-screw extruder Extrusion granulation, injection molding; twin-screw extruder heating temperature of zone 1 is 320℃~325℃, heating temperature of zone 2 is 330℃~335℃, heating temperature of zone 3 is 340℃~345℃, heating temperature of zone 4 is 350℃~355 °C, the mold temperature is 130 °C, the injection pressure is 50 MPa, the screw speed is 40 rpm, and the back pressure is 1 MPa.

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Abstract

The invention relates to a polyphenylene sulfide-based self-lubricating multi-component composite material. The composite material is prepared from the following raw materials in percentage by volume: 50%-93% of polyphenylene sulfide powder or granules, 5%-30% of reinforced fibers, 2%-5% of nanoscale serpentine and 0%-15% of a solid lubricant. Meanwhile, the invention further discloses a preparation method of the composite material. According to the invention, friction coefficient of the PPS-based composite material can be remarkably reduced, and the wear resistance of the polymer composite material is improved.

Description

technical field [0001] The invention relates to the technology and application field of self-lubricating composite materials, in particular to a polyphenylene sulfide-based self-lubricating multi-component composite material and a preparation method thereof. Background technique [0002] Polymer materials are widely used in the fields of automobiles, ships, aviation and industrial equipment due to their light weight, self-lubricating properties, high chemical stability and shock absorption and noise reduction. With the rapid development of modern industry, more and more motion mechanisms are serving in harsh working conditions, such as high load, high speed and frequent start-stop, etc., thus posing severe challenges to the service life and reliability of motion mechanisms. The development of high-reliability, long-life, self-lubricating composite materials is of great significance for solving the tribological performance design problems of related motion mechanisms. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K7/06C08K3/34C08K3/04
CPCC08K7/06C08K3/34C08K3/04C08L81/02
Inventor 张嘎李月雪贺仁李贵涛
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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