Volume 28 Issue 6
Dec.  2013
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CUI Yu-ren, ZHONG Chao-wei, YUAN Ying. DSC Analysis and Crystallization Behavior of the PTFE/SiO2 Composites[J]. Development and Application of Materials, 2013, 28(6): 29-33. DOI: 10.19515/j.cnki.1003-1545.2013.06.007
Citation: CUI Yu-ren, ZHONG Chao-wei, YUAN Ying. DSC Analysis and Crystallization Behavior of the PTFE/SiO2 Composites[J]. Development and Application of Materials, 2013, 28(6): 29-33. DOI: 10.19515/j.cnki.1003-1545.2013.06.007
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DSC Analysis and Crystallization Behavior of the PTFE/SiO2 Composites

  • University of Electronic Science and Technology of China, Chengdu 610054, China

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  • Received Date: August 18, 2013
  • Available Online: March 25, 2024
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  • By means of DSC, non-isothermal crystallization behavior of PTFE/SiO2 composite at different thermoforming temperature is investigated in which part of micro-SiO2 is replaced by nano-SiO2.The results of DSC analysis show that when the thermoforming temperature is higher than 370℃, as degree of polymerization decreases, microstructure of the crystalline PTFE changes and performance of the composites deteriorates.The non-isothermal crystallization DSC analysis of composites indicates that their crystallization process includes both homogeneous nucleation and heterogeneous nucleation.When the substitution is less than 0.25%, the nucleation is enhanced.When the substitution is more than 0.25%, the nucleation enhancemont is not obvious for SiO2 particle agglomeration and poor interfacial compatibility between the PTFE and SiO2.
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