Abstract:

In order to solve the problems of complex measurement methods and formula, too large measurement error and limited range for measuring the flexibility of monofilaments, a novel method was designed. The self-designed mold and the unique way of preparing samples were described in detail, and several polylactic acid and polypropylene filaments with different flexibilities were chosen to test the comperssive strength. The method of preparing samples was described, and the influence parameters of different sample number and diameter of presser foot were discussed, so the feasibility of the method using the compressive strength to characterize the filaments flexibility was proved. The results show that the method by testing the compressive strength of fibers can characterize the flexibility effectively, the optimum parameters of the number of sample preparation and the diameter of presser foot are 10 and 10 mm, respectively.

Key words: monofilament, flexibility, compressive strength, test method