• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Thermotropic liquid-crystalline copolyester (Rodrun LC3000)/thermoplastic elastomer (SEBS) in situ composites: II. Mechanical properties and morphology of monofilaments in comparison with extruded strands
【24h】

Thermotropic liquid-crystalline copolyester (Rodrun LC3000)/thermoplastic elastomer (SEBS) in situ composites: II. Mechanical properties and morphology of monofilaments in comparison with extruded strands

机译：热致液晶共聚酯（Rodrun LC3000）/热塑性弹性体（SEBS）原位复合材料：II。单丝的机械性能和形态与挤压丝比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Monofilaments of in situ composites were prepared from an immiscible blend of a thermotropic liquid-crystalline polymer (TLCP), Rodrun LC3000, and a thermoplastic elastomer, styrene-(ethylene butylene)-styrene (SEBS), by a melt spinning process. Mechanical properties and the morphology of the composite monofilaments were investigated and compared with those of the extruded strands previously reported. The stresses at all tensile strains of the composite monofilaments were much higher than those of the extruded strands. The tensile strengths of both extruded strands and monofilaments were comparable, but the elongation at break of monofilaments dropped considerably. The tension sets of composite monofilaments were slightly higher than those of extruded strands. All composite monofilaments with TLCP content of less than or equal to15 wt % exhibited good elastic recovery under the applied strain up to 200%. The dynamic mechanical storage modulus at 25degreesC of 10 wt % TLCP composite monofilament increased fourfold compared with that of the composite extruded strand and fivefold compared with that of the neat SEBS monofilament. The dramatic enhancement in the mechanical properties of in situ composite monofilaments is due to the formation of finer and longer TLCP fibrils (length-to-width ratio >100) than those formed in the extruded strands. (C) 2003 Wiley Periodicals, Inc. [References: 21]
机译：原位复合材料的单丝是由热致液晶聚合物（TLCP），Rodrun LC3000和热塑性弹性体苯乙烯-（乙烯丁烯）-苯乙烯（SEBS）的不混溶混合物通过熔融纺丝工艺制备的。研究了复合单丝的机械性能和形态，并将其与先前报道的挤出股线的机械性能和形态进行了比较。复合单丝在所有拉伸应变下的应力都比挤出股的应力高得多。挤出的股线和单丝的拉伸强度是可比较的，但是单丝的断裂伸长率显着下降。复合单丝的拉伸变形略高于挤出丝线。 TLCP含量小于或等于15wt％的所有复合单丝在施加的应变高达200％下均表现出良好的弹性回复。 10wt％的TLCP复合单丝在25℃下的动态机械储能模量与复合挤出线材的动态机械储能模量相比增加了四倍，而与纯SEBS单丝相比则增加了五倍。原位复合单丝机械性能的显着提高是由于形成了比挤出股丝中更细，更长的TLCP原纤维（长宽比> 100）。 （C）2003 Wiley Periodicals，Inc. [参考：21]

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号