Abstract
In this paper, various methods to evaluate the friction function of plastic materials were discussed and the following equation was concluded to be the best for evaluation: y=βM* where y is the friction force, β is a constant and M* is the load. A reciprocating friction tester was designed and developed to optimize the evaluation method. Using the above function and the device, a low friction and low wear polyacetal resin was developed using an L18 orthogonal array in the experiment. After optimization, about 6 decibel gain on friction was obtained without affecting friction property. ln the life test, a gear from the new material showed a 50% durability improvement over current commercial products.
