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聚氨酯基体配比对芳纶增强聚氨酯复合伙料力学

作者:admin 来源:原创 时间:2020年04月08日 02:48:32浏览:

  

  程虐政

  

  李小慧

  

  沈景凤

  

  金石磊

  

  林彬

  

  以甲、乙双组分聚氨酯为基体,芳纶为增强体,制备了分歧基体配比的芳纶增强聚氨酯复合伙料,并采取拉伸试验、曲折试验、冲击试验等方法对其力学功用停止了剖析。结果标明:随着聚氨酯中乙组份比例的增大年夜,芳纶增强聚氨酯复合伙料的拉伸断裂强度、拉伸弹性模量、曲折强度和曲折弹性模量也随之增大年夜,断裂伸长率则随之减小,冲击韧度先增大年夜后减小,当甲、乙组比例为10:4时,冲击韧度十分。

  芳纶

  聚氨酯

  复合伙料

  基体配比

  力学功用

  aramid fiber

  polyurethane

  composites

  matrix ratio

  mechanical property

  Aramid fiber reinforced polyurethane composites with different matrix formulations were prepared by using A and B two components polyurethane as matrix and aramid fiber as reinforcement. The mechanical properties of the composites were analyzed by means of tensile test, bending test and impact test. The results show that with the increase of polyurethane component B, the tensile fracture strength, tensile elastic modulus, flexural strength and flexural elastic modulus of the aramid fiber reinforced polyurethane composites increased, and the elongation at break decreased. The impact toughness of the aramid fiber reinforced polyurethane composites increased first and then decreased. When the ratio of component A and B was 10:4, the impact toughness was the highest.

(来源:原创   admin)  

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