Preparation process of self-lubricating wear-resistant injection molding molybdenum disulfide polyformaldehyde

Abstract

The invention relates to an organic polymer composite material, in particular to a preparation process of self-lubricating wear-resistant injection molding molybdenum disulfide polyformaldehyde; and the molybdenum disulfide polyformaldehyde comprises the components by weight percent: 86.5-90% of polyformaldehyde, 1-10% of molybdenum disulfide powder, 1-5% of toughening agent, 0.2-2.0% of antioxidant, 0.1-1.7% of aldehyde absorbing agent, 0.1-0.4% of coupling agent and 0.1-2.5% of other auxiliary agents. The technology adds the characteristic of high wear resistance based on maintaining the good comprehensive mechanical property; the raw materials of the technology are convenient to produce and purchase as well as are low in production cost; and the choking smell is not decomposed when the product is processed by injection molding or extrusion, so that the product competitiveness is comprehensively improved.

Description

technical field [0001] The invention relates to an organic polymer composite material, more specifically, relates to a self-lubricating wear-resistant injection molybdenum disulfide polyoxymethylene production process. 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 conduct...

AI Technical Summary

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 At present, for various reasons, developed countries such as Europe, America / Japan have set off various restrictions on foreign imported products and set up a series of barriers. Among them, the requirements for halogen-free materials and environmental protection requirements for electronic and electrical products are strict. Formaldehyde will decompose during injection molding or extrusion to produce products, resulting in a choking odor, which has also become a serious problem for many export companies in my country.