High wear-resistant self-lubricating polyoxymethylene and process for preparing same

Abstract

The invention relates to organic polymer composite material, in particular to high wear-resistant self-lubricating polyoxymethylene and a process for preparing the same. The high wear-resistant self-lubricating polyoxymethylene comprises the following components by weight percent: 85.5-96 percent of polyoxymethylene, 2-5 percent of silicon lubricant, 1-5 percent of toughening agent, 0.1-1.7 percent of polyoxymethylene absorbing agent, 0.1-0.4 percent of coupling agent, 0.3-2.0 percent of antioxidant and 0.1-2.5 percent of other auxiliary. The high wear-resistant self-lubricating polyoxymethylene has the characteristics of wear resistance and self-lubrication in addition to the original good comprehensive mechanical properties and is convenient to produce and purchase, thereby greatly improving the competitiveness of polyoxymethylene products and being more suitable for producing the workpieces needing to improve the wear resistance and reducing the material cost.

Description

technical field [0001] The invention relates to an organic polymer composite material, in particular to a high wear resistance self-lubricating polyoxymethylene and a preparation method thereof. Background technique [0002] Polyoxymethylene is a large variety of engineering plastics with excellent comprehensive properties. It has good mechanical properties, electrical properties, wear resistance, dimensional stability and chemical resistance, especially fatigue resistance, self-lubrication and wear resistance. It is the highest among all thermoplastics, so it is widely used to replace various non-ferrous metals and alloys to make automobiles, machinery, instruments, agricultural machinery, chemical parts, such as gears, cams, bearings, bushes, gaskets, valves, Liquid delivery pipes, handles and chemical containers, etc. [0003] In order to obtain better wear resistance and expand the application field, many institutions and enterprises have conducted research on improving...

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Problems solved by technology

[0003] In order to obtain better wear resistance and expand the application field, many institutions and enterprises have conducted research on improving the wear resistance of polyoxymethylene. However, it is difficult to control costs, improve wear resistance, and control decomposition to improve production stability. etc. have not always been balanced and unsatisfactory, so no good application results have been achieved

Either the wear resistance of the product is improved, but the raw material cost and production cost are too high to form industrialized and large-scale production, or the raw material cost and production cost are well controlled, but the wear resistance of the product is not greatly improved, and the effect is not obvious , and at present developed countries such as Europe, America / Japan, etc., for various reasons, set off various restrictions on foreign imports and set up a series of barriers. Many export enterprises in my country are seriously troubled