Test of axial compression performance of fiber and determination of prickle property thereof

To investigate fiber axial compressing performance and its prickle property,the test equipment and test method were modified. The changes of contact conditions between the fiber sample and the testhead and the corresponding changes in the compression curves during the test were analyzed,and the methods to determine fiber prickle properties applying fiber axial compressing performance were elaborated. The results showed that the contact condition of the fiber sample and the test-head might change from ″point contact″ to ″line contact″ when testing the axial compression bending deformation of fiber samples. Therefore,the axial compressing performance test should be determinated with the finish of the ″point contact″ stage. When the prickle properties of fibers were determine according to their axial compressing performances,the contact condition between the fiber-end and the skin should be ″ point contact″,and the length of the fiber-end should be more than 0. 2 mm,and can withstand an axial load no less than 0. 75 m N.