• 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 >Effect of temperature and pressure treatment on the porosity of expanded polytetrafluoroethylene films
【24h】

Effect of temperature and pressure treatment on the porosity of expanded polytetrafluoroethylene films

机译：温度和压力处理对膨​​胀聚四氟乙烯薄膜孔隙率的影响

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

Small-angle neutron scattering was performed on a series of expanded polytetrafluoroethylene membranes that were subjected to thermal treatment at a maximum of 320degreesC at pressures up to 517 kPa. The scattering data indicate the existence of monodisperse pores of 2.7-Angstrom radius, and a polydisperse set of scatterers with surface fractal properties. The thermal treatment had no significant effect on the structure, given that the maximum temperature was below the softening point of the polymer. The effect of increasing pressure was to increase the fractal dimension and to decrease the porosity void fractions. A linear relationship was noted between the Porod invariant values and the applied pressure. The pressure treatment had no effect on the size of the 2.7-Angstrom pores. (C) 2003 Wiley Periodicals, Inc. [References: 12]
机译：在一系列膨胀的聚四氟乙烯膜上进行小角中子散射，该膜在最高517 kPa的压力下于最高320摄氏度进行热处理。散射数据表明存在2.7埃半径的单分散孔以及具有表面分形特性的多分散散射体。考虑到最高温度低于聚合物的软化点，热处理对结构没有明显影响。增加压力的作用是增加分形维数并减少孔隙率。指出了Porod不变值和所施加压力之间的线性关系。加压处理对2.7埃孔的尺寸没有影响。 （C）2003 Wiley Periodicals，Inc. [参考：12]

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