• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Regional Conference of the Polymer Processing Society >Development of Natural Fiber/ Engineering Plastics Composites with Flame Retardance Properties
【24h】

Development of Natural Fiber/ Engineering Plastics Composites with Flame Retardance Properties

机译：具有阻燃性能的天然纤维/工程塑料复合材料的研制

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Adding the natural fibre thermoplastic composites NFTC to engineering plastics represents a challenge due to the high temperature processing which in turn could result in the natural fibre damage. Finding applications for NFTC depends not only on the mechanical properties but also on the physical ones and the flame retardance property has an utmost importance. However; the implementation of flame retardants FRs materials has to counteract another challenge which is the drop of the corresponding mechanical properties. A comprehensive study is carried out for optimising the compounding process of the three constituents namely the thermoplastic, the natural fibre and the FR. A mixture of halogen-free phosphor based intumescent and inorganic hydrates is used as the FR system. FR mixture does not exceed 20% limit to allow enough binding effect of the thermoplastic with both fibres and FR. After conducting a screening study, it found out that Polybutylene terephthalate (PBT) and Polyamide (PA6) are good candidates due to their relatively low melting point with respect to the candidate natural fibres namely flax and kenaf. Twin screw extruder is used to compound the polymer and the FR with the pellets of the natural fibres. Extruder configuration is adjusted to obtain a stable process at 10, 15 and 22.5 wt.-% fibre. Temperature and speed are optimised in order to avoid the thermal degradation of the natural fibres as much as possible. The prepared composites are subjected to tensile test, Charpy notched and un-notched impact test, UL94 and cone calorimetry. Results are promising especially for PA6 composites. Mechanical testing shows a decrease of 10% in strength and 15-25% in impact strength after the addition of 20% FR.V-0 rating is obtained by 20% FR according to UL94 test. The cone calorimetry show a reduction in heat release rate HRR to 50% after the application of FR.
机译：添加天然纤维热塑性复合材料NFTC至工程塑料由于高温处理而表示挑战，这反过来可能导致天然纤维损伤。寻找NFTC的应用不仅取决于机械性能，还取决于物理性能，而且阻燃性能最重要。然而;阻燃剂FRS材料的实施必须抵消另一个挑战，这是相应的机械性能下降。进行综合研究，用于优化三种成分的复合过程即热塑性，天然纤维和Fr。使用无卤磷光体基型膨胀型膨胀物和无机水合物作为FR系统。 FR混合物不超过20％限制，以允许热塑性塑料与两个纤维和Fr的足够的结合效果。在进行筛选研究之后，它发现，由于它们相对于候选天然纤维即亚麻和keaf，对对苯二甲酸丁酯（PBT）和聚酰胺（PA6）是良好的候选者。双螺杆挤出机用于将聚合物和FR与天然纤维的粒料一起化合物。调节挤出机构型以在10,15和22.5重量％的纤维下获得稳定的方法。优化温度和速度，以避免尽可能多地降解天然纤维。制备的复合材料经受拉伸试验，夏比缺口和未缺口的冲击试验，UL94和锥形量热法。结果特别适用于PA6复合材料。机械测试显示在加入20％Fr.V-0等级后，在加入20％Fr，根据UL94试验得到20％的冲击强度的降低，15-25％。锥形量热法显示在FR施用后的热释放速率HRR降低至50％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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