High-fluorine wear-resistant self-lubricating material

Abstract

The invention relates to a high-fluorine wear-resistant self-lubricating material. According to a technical scheme in the invention, the high-fluorine wear-resistant self-lubricating material is prepared by mixing the following at least three raw materials: isocyanate and polyol with a melting point of no more than 150 DEG, and a fluorine-containing organic material with a melting point of no morethan 150 DEG and a kinematic viscosity of 0.75 to 100, 000 mm<2> / s at 20 DEG C. The wear-resistant self-lubricating material has the advantages of low production cost, stable performance, good compatibility and excellent performance.

Description

Technical field [0001] The invention relates to the field of material manufacturing, in particular to a high-fluorine wear-resistant self-lubricating material. Background technique [0002] Self-lubricating materials refer to the use of solid powders, films or some integral materials to reduce the friction and wear between two bearing surfaces. In the solid lubrication process, the solid lubricating material and the surrounding medium have to physically and chemically react with the friction surface to form a solid lubricating film to reduce friction and wear. [0003] Common self-lubricating materials, such as polytetrafluoroethylene (PTFE), although they have excellent properties such as corrosion resistance, weather resistance, high lubrication, and electrical insulation, but because polytetrafluoroethylene is a typical soft and weak polymer, large molecules The mutual gravitational force is small, rigidity, hardness, and strength are small. It will deform under long-term stres...

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Problems solved by technology

From the above process, it can be seen that the traditional polymerization production method is more complicated, and there are still disadvantages such as poor product stability and high impurity content, and it will also bring a lot of "three wastes" to the environment, increasing the cost and pressure of environmental protection

[0005] In addition, the current common production of fluorine-containing materials is mainly to introduce fluorine atoms through chemical reactions, such as graft modification, copolymerization, etc. This method of chemical introduction limits the fluorine content to a low level, so it cannot fully display the fluorine-containing materials. If too much fluorine-containing material is forcibly added, there will be problems such as dissociation of fluorine-containing monomers, degradation of material structure performance, and serious environmental pollution. However, research has found that the introduction of high fluorine content can significantly improve the self-lubrication and wear resistance of materials

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