纺织学报 ›› 2015, Vol. 36 ›› Issue (12): 58-63.

• 纺织工程 • 上一篇    下一篇

锦葵茎皮纤维增强复合材料的力学及隔声性能

  

  • 收稿日期:2014-11-13 修回日期:2015-08-10 出版日期:2015-12-15 发布日期:2015-12-10

Mechanical and acoustic properties of virginica stem bark fiber reinforced composites

  • Received:2014-11-13 Revised:2015-08-10 Online:2015-12-15 Published:2015-12-10

摘要:

为拓宽锦葵茎皮纤维的应用领域,以锦葵茎皮为原料,采用碱脱胶工艺提取锦葵茎皮纤维,并以碱处理的锦葵茎皮纤维为增强体,聚丙烯纤维为基体,制备纤维质量分数分别是0%、10%、20%、30%、40%的纤维增强复合材料,探讨了纤维质量分数对锦葵茎皮纤维增强复合材料的拉伸、弯曲及隔声性的影响。研究结果表明:当纤维质量分数为30%时,锦葵茎皮纤维增强复合材料的拉伸断裂强度、拉伸模量、弯曲模量均最高,弯曲强度随着锦葵茎皮纤维质量分数的增加出现逐渐增大的趋势;当纤维质量分数超过10%时,复合材料的隔声性随着发声频率增加出现先增大后减小的趋势,同一发声频率,含量越低,隔声性能越差,当纤维质量分数超过30%后,电压峰值衰减率反而下降。

Abstract:

In order to widen the application field of virginica stem bark fiber, virginica stem bark fiber which was extracted from virginica stem skin by alkali degumming technology was treated with alkali and the polypropylene composites reinforced virginica stem stem bark fiber with the content of 0%, 10%, 20%, 30%, and 40% were prepared. The effect of virginica stem bark fiber content on the tensile, flexural and acoustic property of the composites were discussed. The results showed that the tensile breaking strength, tensile modulus and flexural modulus of the composite reached the maximum when the fiber content was 30%, but the bending strength gradually improved with the increase of the content of the virginica stem bark fiber; When the fiber content overpass 10%, the acoustic property of composite first increased and then decreased with the trend of increasing audible frequency; When the audible frequency was the same, the more lower the content of the virginica stem bark fiber, the more poor the acoustic performance, but when the content of the virginica stem bark fiber overpass 30%,the peak voltage attenuation percentage declined.

中图分类号: 

  • TS 101 1923 1 1
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