Wear-resisting plastic of producing timer cam

Abstract

The invention relates to a wear-resisting plastic for producing a timer cam. The wear-resisting plastic is composed of the following raw materials by weight percentage: 65%-85% of foundation plastic nylon 66 and 10%-35% of the wear-resisting plastic. According to the technical scheme, the wear-resisting plastic is added in the nylon 66, so that the cam has high temperature resistance property, high mechanical strength property and the wear-resisting property.

Description

technical field [0001] The invention belongs to the field of organic polymer composite materials, in particular to a high-temperature-resistant, high-mechanical-strength and wear-resistant plastic used in timer cams. Background technique [0002] The development of high-temperature-resistant nylon has made it possible to reduce weight, and heat-resistant plastics can be used to produce certain high-temperature-resistant parts to replace metal materials. However, among the existing plastics, plastics that can simultaneously meet high temperature resistance, wear resistance and high mechanical strength have not been able to fully meet people's expectations, which has a certain impact on the replacement of metal materials. [0003] In the field of timers, the timer cam as a key component, because it cannot use conductive metal materials, it is necessary to process the cam from non-conductive non-metallic materials, and plastic is the main method of producing cams. During the u...

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Problems solved by technology

[0004] On the other hand, during the conduction or disconnection process of the reed group in the timer, regardless of the material used for the contacts, spark discharge will inevitably occur, and the temperature of this heat is much higher than the melting temperature of the plastic , long-term use will affect the life of the cam