Self-lubricating wear-resistant composite film containing nano two-dimensional black-phosphorus and preparation method of composite film

Abstract

The invention relates to a self-lubricating wear-resistant composite film containing nano two-dimensional black-phosphorus and a preparation method of the composite film. The preparation method comprises the following steps: 1, preparing a nano two-dimensional black-phosphorus composite material: (1) preparing black phosphorus and composite nano powder of black phosphorus and graphite, and (2) preparing a solution of a black-phosphorus composite material: a, preparing a mixed solution of black phosphorus and polytetrafluoroethylene, and b, preparing a micro-powder mixed solution of black phosphorus and polytetrafluoroethylene; and 2, preparing the nano two-dimensional black-phosphorus composite film: (1) carrying out smoothness treatment on a sample, and (2) preparing the film by using a glue spreading machine or an electrostatic spraying method. The preparation method has the advantages of simple and convenient forming process and low preparation cost; and the prepared nano two-dimensional black-phosphorus self-lubricating wear-resistant composite film has excellent self-lubricating property, wear resistance, stability and high-temperature oxidation resistance, and can be appliedin special environments with high temperature, air or vacuum, corrosion, radiation, high load and the like.

Description

technical field [0001] The invention belongs to the technical field of solid-phase self-lubricating and wear-resistant composite materials, in particular to a self-lubricating and wear-resistant composite film containing nanometer two-dimensional black phosphorus and a preparation method thereof. Background technique [0002] With the rapid development of modern automobile industry, aerospace industry and mechanical processing industry, the application fields of self-lubricating wear-resistant composite coating parts have become more extensive. For a long time, improving the self-lubrication and wear resistance of materials has become a subject of concern and attention. Generally, there are two main technical means to improve the tribological properties of materials. First, add lubricating particles with low shear strength and self-lubricating properties to the polymer matrix, such as adding molybdenum disulfide, boron nitride, graphite, polytetrafluoroethylene, etc., to re...

AI Technical Summary

Problems solved by technology

The most noteworthy thing is that black phosphorus still maintains a stable lubricating effect after producing phosphate and phosphorus oxides during the physical and chemical process, and forms a uniform transfer film of phosphorus physical and chemical products during the friction process, which improves the load-bearing capacity of the material , thereby improving the friction and wear properties of the composite material; this feature is not available in other lubricating two-dimensional materials, such as MoS 2 Oxidation is prone to occur in humid atmosphere or oxidizing environment, which degrades its lubricating performance and greatly reduces the wear life

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