Abstract:

In order to deal with the defects of existing testing devices and methods for thermal shrinkage of synthetic fibers, improvement on the device and the testing principle and method are described. This device integrates heat treatment and pyrocondensation rate test, avoid stretch error due to the transfer of fiber；during the process of testing fibre sample is no longer driven by the cylinder sample rotation but motionless, avoiding the time loss via fiber “static - Dynamic – static” . Practice shows: its structure is simple, its operation is convenient and fast, it protects environmental, so it has higher application and promotion value.

Key words: synthetic fiber, thermal shrinkage rate, device, testing princeole