• 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 >Temperature and frequency-dependent creep and recovery studies on PVDF-HFP/organo-modified layered double hydroxides nanocomposites
【24h】

Temperature and frequency-dependent creep and recovery studies on PVDF-HFP/organo-modified layered double hydroxides nanocomposites

机译：PVDF-HFP /有机改性层状双氢氧化物纳米复合材料的温度和频率依赖性蠕变和恢复研究

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

A series of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) loaded with various contents of layered double hydroxides (LDHs) nanoparticles were prepared via a melt mixing method. Detailed investigations on LDH dispersion state in the polymeric matrix conducted by TEM revealed intercalated/exfoliated, and agglomerated structures at low (1 wt %) and high (>3 wt %) loadings of LDH contents, respectively. Wide angle X-ray scattering and DSC results showed that incorporation of LDH into PVDF-HFP matrix reduced its overall crystallinity and helped to form polar crystallites, while the crystal size at 020 crystallographic directions was found to be most affected by presence and dispersion state of LDH in the matrix. TGA results showed LDH improved thermal stability of matrix however, unlike many other nanomaterials it significantly reduced the residual mass which highlights catalytic role of LDH in degradation of residual carbon char. Detailed analysis on creep and recovery data over wide range of selected temperatures revealed that the creep compliance of nanocomposites are basically controlled by crystallinity and presence of LDH at low and high temperatures, respectively. Based on obtained storage modulus and creep compliance master curves it was also found that the influence of LDH on decreasing the creep compliance and improving viscoelastic properties of PVDF-HFP over long time period and over high frequency ranges becomes more pronounced. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46352.
机译：装载有层状双氢氧化物的各种内容的一系列的聚（偏二氟乙烯 - 共 - 六氟丙烯）（PVDF-HFP）（水滑石）纳米颗粒通过熔融混合方法制备的。在通过TEM进行的聚合基质LDH分散状态的详细调查显示嵌入/剥离，并在低（1％重量）和高的附聚结构（> 3重量％）分别LDH含量，载荷。广角X射线散射和DSC结果表明LDH的那掺入PVDF-HFP矩阵降低了其总体的结晶度，并帮助形成极性微晶，而被发现在020晶体学方向的晶体尺寸要受影响最严重的存在和分散状态LDH在基质中。 TGA结果表明LDH提高基质的热稳定性然而，与许多其它纳米材料它显著降低了剩余质量其中突出在残留碳炭的降解LDH的催化作用。超过宽范围的选择的温度的蠕变和恢复数据的详细分析表明，纳米复合材料的蠕变柔量基本上由结晶度和LDH的存在下，在低温和高温下分别控制。基于所获得的储能模量和蠕变柔量主曲线也有人发现LDH的上减小蠕变柔并在长的时间段改善PVDF-HFP的粘弹性质和在高频率范围内的影响变得更加显着。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018年，135，46352。

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