ポリアセタールが樹脂歯車市場を独占している技術的背景

抄録

Polyacetal is a very suitable resin for use as a gear because it has good sliding properties, fatigue properties, heat resistance, dimensional stability, high precision. In addition, polyacetals can be used without reinforcement with glass fibers since the decrease in elastic modulus is small at high temperatures. Therefore, it is possible to use it as a gear even at high temperatures while maintaining the wear resistance and high precision of polyacetal. These are the technical backgrounds that polyacetal monopolizes the resin gear market for many years. Another major reason is that polyacetal can be supplied at a reasonable cost. 50 years have passed since polyacetal was put on the market, and there is no alternative resin yet. In this report, these are explained using data respectively.