• 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 >Initiation and development of the heat-affected zone in the vibration welding of polyvinylidene fluoride and its copolymers
【24h】

Initiation and development of the heat-affected zone in the vibration welding of polyvinylidene fluoride and its copolymers

机译：聚偏二氟乙烯及其共聚物振动焊接中热影响区的产生与发展

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

Using a servo hydraulically controlled vibration-welding machine, the temporal and spatial development of hierarchical structure in the heat-affected zone of Poly(vinylidene fluoride) homopolymer and a copolymer of vinylidene fluoride and hexafluorpropylene are investigated. The dynamical changes early in the welding process are rather complex, and start at highly localized regions that then develop rapid adhesive character. In subsequent stages, these regions coalesce and a wave pattern establishes with wave normals oriented in the vibration direction. The crests of the waves near the side surfaces then begin to extrude fibrillar structure. These fibers are also collected and extruded in the vibration direction with their long axes normal to the vibration direction. The production of such features is partly attributed to the high melt elasticity of these polymers that results in instability resulting in their production. X-ray analysis indicates that the fibers are unoriented in their crystalline regions but electron microscopy studies show that a spiral orientation develops in the extruded fibers indicating that they underwent extension plus twisting deformation. (C) 2002 Wiley Periodicals, Inc. [References: 22]
机译：利用伺服液压控制的振动焊接机，研究了聚偏二氟乙烯均聚物和偏二氟乙烯与六氟丙烯的共聚物在热影响区中分层结构的时空分布。焊接过程早期的动态变化是相当复杂的，并且始于高度局部的区域，然后迅速发展出粘合特性。在随后的阶段中，这些区域会聚在一起，并以在振动方向上定向的波法线建立波型。然后在侧面附近的波峰开始挤出纤维状结构。这些纤维也被收集并沿振动方向挤出，其长轴垂直于振动方向。这些特征的产生部分归因于这些聚合物的高熔体弹性，其导致不稳定，从而导致其生产。 X射线分析表明，纤维在其晶体区域是未取向的，但是电子显微镜研究表明，在挤出的纤维中形成了螺旋取向，表明它们经历了拉伸加扭曲变形。 （C）2002 Wiley Periodicals，Inc. [参考：22]

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