Preparation method of molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material

A technology of polytetrafluoroethylene and composite materials, which is applied in the field of preparation of molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite materials, can solve the problem of difficulty in uniform dispersion of synergistic particles, complex preparation process, and friction reduction of polytetrafluoroethylene low cost of preparation, simple molding process and uniform distribution

Active Publication Date: 2019-10-29
YANSHAN UNIV
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Problems solved by technology

In addition, in recent years, researchers have mixed various nanocomposite materials with polytetrafluoroethylene powder, and then adopted cold pressing and heat treatment processes to obtain a polymer composite wear-resistant and friction-reducing material based on polytetrafluoroethylene. Compared with polytetrafluoroethylene, the tribological properties of the prepared materials have been greatly improved, but the defect that the synergistic particles are difficult to uniformly disperse in polytetrafluoroethylene still exists
Publication No. CN106046637A discloses a Ti-containing 3 SiC 2 and Ti 3 AlC 2 Polytetrafluoroethylene composite material and its preparation method, using steel fiber and carbon fiber to improve the tensile strength and friction performance of polytetrafluoroethylene, while utilizing the improved melting method to incorporate fine fillers such as SiO 2 , Al powder, etc. are sintered to the surface of PTFE at high temperature, so that the bonding strength is significantly improved, and by adding Ti to the composite material 3 SiC 2 and Ti 3 AlC 2 , which enhances the wear resistance of the PTFE composite material; the PTFE composite material prepared by this method has good viscosity, wear resistance and sealing performance; Defects such as sexual decline

Method used

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preparation example Construction

[0040] A kind of preparation method of molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material, it specifically comprises the following steps:

[0041] S1. Plasma treatment is performed on the polytetrafluoroethylene powder, and after irradiating for 60-120s, place it in the air and let it stand for 15-30 minutes;

[0042] S2, polytetrafluoroethylene powder for sensitization and activation treatment:

[0043] S21, prepare tin protochloride sensitization solution, dissolve tin protochloride with concentrated hydrochloric acid at room temperature, add deionized water, the mass ratio of deionized water, stannous chloride and concentrated hydrochloric acid is 100:1:1, stir to obtain SnCl sensitizing solution,

[0044] S22, prepare palladium chloride activation solution, be 1:1000 configuration hydrochloric acid solution with the mass ratio of concentrated hydrochloric acid and deionized water, join palladium chloride in the hydrochloric acid solution, th...

Embodiment 1

[0065] S1, carry out plasma treatment to polytetrafluoroethylene powder, carry out plasma treatment to polytetrafluoroethylene powder with HD-1A type plasma treatment instrument, the radio frequency generator of plasma treatment instrument is 13.56MHz, power is 500W, at first put 5g of polytetrafluoroethylene powder to be treated is evenly spread on the stage between the two electrodes in the reaction chamber of the plasma processor. The distance between the two electrodes is adjusted to 15mm in advance, and the two ends of the reaction chamber are respectively connected to the vacuum pump and the air intake system. ; After starting the vacuum pump, keep the working pressure of the reaction chamber at about 5Pa, and then pass in air for 5 minutes at a rate of 150mL / min; after the pressure in the reaction chamber is stabilized, start the high-frequency power supply, Vinyl fluoride powder was irradiated, and the irradiating treatment time was 60s; after the plasma irradiating tre...

Embodiment 2

[0085] S1, carry out plasma treatment to polytetrafluoroethylene powder, carry out plasma treatment to polytetrafluoroethylene powder with HD-1A type plasma treatment instrument, the radio frequency generator of this plasma treatment instrument is 13.56MHz, power is 500W, at first Spread 5g of polytetrafluoroethylene powder to be treated evenly on the stage between the two electrodes in the reaction chamber of the plasma processor. The distance between the two electrodes is adjusted to 15mm in advance. connected; after starting the vacuum pump, keep the working pressure of the reaction chamber at about 5Pa, and then introduce air for 5 minutes at a rate of 150mL / min; after the pressure in the reaction chamber is stabilized, start the high-frequency power supply to The tetrafluoroethylene powder is subjected to irradiation treatment, and the irradiation treatment time is 60s; after the plasma irradiation treatment is completed, the radio frequency power supply, the intake gas pa...

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Abstract

The invention belongs to the technical field of self-lubricating materials, and relates to a preparation method of a molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material,and the method comprises the following steps: S1, performing plasma treatment on polytetrafluoroethylene powder, and after irradiation for 60-120 seconds, putting the polytetrafluoroethylene powder for standing for 15-30 minutes in air; S2, performing sensitization and activation treatment on the polytetrafluoroethylene powder, to be more specific, after wetting of the polytetrafluoroethylene powder treated by plasma with absolute ethanol, respectively performing sensitization and activation on the polytetrafluoroethylene powder; S3, preparing a nickel phosphorus-polytetrafluoroethylene composite and performing amination treatment, to be more specific, a chemical nickel phosphorus-plating solution is prepared for plating the sensitized and activated polytetrafluoroethylene powder to obtainnickel phosphorus-polytetrafluoroethylene composite powder, and the obtained nickel phosphorus-polytetrafluoroethylene composite powder is aminated; and S4, preparing the molybdenum disulfide-nickelphosphorus-polytetrafluoroethylene composite material, to be more specific, first, molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material powder is prepared, and the molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material powder is molded to obtain the wear resistant and antifriction molybdenum disulfide-nickel phosphorus-polytetrafluoroethylenecomposite material.

Description

technical field [0001] The invention belongs to the technical field of self-lubricating materials, and relates to a preparation method of a molybdenum disulfide-nickel phosphorus-polytetrafluoroethylene composite material. Background technique [0002] With the continuous development of equipment manufacturing technology, various industries have put forward higher and higher requirements for the operation reliability of mechanical equipment and the effective utilization of resources in recent years. Statistics at home and abroad show that the failure of the moving sub-components in mechanical equipment due to wear is a main reason affecting the reliability of equipment operation. At the same time, the loss of materials and energy caused by the wear of mechanical equipment and parts also brings huge economic losses and environmental protection Pollution has brought great pressure to economic development and resource utilization. Therefore, improving the lubrication condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K3/08C08K3/02C08K3/30
CPCC08K3/02C08K3/08C08K3/30C08K2003/026C08K2003/0862C08K2003/3009C08L27/18
Inventor 杨育林李飞宋来洲齐效文谷大鹏高添梁丽芬
Owner YANSHAN UNIV
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