空隙率对喷气混纤纱复合材料力学性能的影响

EFFECT OF VOID CONTENT ON MECHANICAL PROPERTIES OF COMPOSITES MADE FROM AIR JET COMMIN GLED YARN

  • 摘要: 利用玻璃纤维/聚丙烯喷气混纤纱(50∶50 w t% ) , 在热压机上制作单向玻璃纤维/聚丙烯复合材料。按照A STM D792 标准, 测试各试样中的空隙率, 并利用三点弯曲试验在DCS500 试验机上测试试样的弯曲性能。试验结果得到空隙率与喷气混纤纱复合材料弯曲性能之间为负指数关系, 且对不同的弯曲指标其关系也不相同。

     

    Abstract: Unidirectional glass/polypropylene composites was fabricated in a hot press by using air jet commingled yarn of 50∶50 wt% glass fibers/polypropylene filaments. According to ASTM D792, the void content sample of composites was measured, and bending test of composites was performed on DCS500 tester by using three point loading system. Experimental results showed that the relation between void content and bending properties of air jet commingled yarn composites was a negative exponential function; meanwhile, the functions were various for different bending properties such as strength and modulus.

     

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