MUTUAL INFLUENCE BETWEEN THE RADIATION EFFECT ON STRUCTURE AND THE CRYSTALLIZATION BEHAVIOR OF POLYTETRAFLUOROETHYLENE

Lyan Shusyan; Zhou Shiyi

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MUTUAL INFLUENCE BETWEEN THE RADIATION EFFECT ON STRUCTURE AND THE CRYSTALLIZATION BEHAVIOR OF POLYTETRAFLUOROETHYLENE

更新时间：2023-04-23

- MUTUAL INFLUENCE BETWEEN THE RADIATION EFFECT ON STRUCTURE AND THE CRYSTALLIZATION BEHAVIOR OF POLYTETRAFLUOROETHYLENE
- Journal of Radiation Research and Radiation Processing Vol. 7, Issue 3, Pages: 20-25(1989)
- 作者机构：
  
  1.化工部成都有机硅研究中心（即化工部晨光化工研究院），成都
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Lyan Shusyan, Zhou Shiyi. MUTUAL INFLUENCE BETWEEN THE RADIATION EFFECT ON STRUCTURE AND THE CRYSTALLIZATION BEHAVIOR OF POLYTETRAFLUOROETHYLENE. [J]. Journal of Radiation Research and Radiation Processing 7(3):20-25(1989)
DOI：

Lyan Shusyan, Zhou Shiyi. MUTUAL INFLUENCE BETWEEN THE RADIATION EFFECT ON STRUCTURE AND THE CRYSTALLIZATION BEHAVIOR OF POLYTETRAFLUOROETHYLENE. [J]. Journal of Radiation Research and Radiation Processing 7(3):20-25(1989) DOI：

摘要

用电子显微镜（TEM、SEM），偏光显微镜，电子衍射（E.D）和示差扫描量热（DSC）等方法研究了,60,Co γ辐射聚四氟乙烯（PTFE）的结晶行为。结果表明，PTFE晶体的形态随辐照剂量增大呈有规律的变化。经辐照过的PTFE晶体可以产生表面晶体、针晶十球晶、棒晶、单晶、球粒结构五类结晶形态。它们的结晶过程不仅与辐照条件有关，而且与PTFE晶体的完整性有关。这些结果与DSC测得的结晶性质之间存在对应关系。电镜图象表明，辐照过的晶体存在有序微区，它在结晶时起晶核作用。同一晶体辐照的不均一性，道明一个完整的晶格有抗γ射线的能力。

Abstract

The structures and crystallization behavior of polytetrafluoroethylene (PTFE) were studied with electronoptical microscope, electron diffraction and differential scanning calorimetry (DSC) techniques respectively. It was shown that the morphology of PTFE depends not only on the radiation intensity, but also on crystalline perfectness of PTFE. The irradiated PTFE had five kinds of typical structure morphology including to the surface crystals, needle-like + spherulite, rodlike, single crystals and spheric particles. These results were correlated with DSC crystallization curves very well.,From electron pattern it is demonstrated that in these irradiated crystals there exists some ordered regions, which act as nucleus of crystal. This indicated that within some range of dose, the inhomogenous distribution of irradiation of the same crystal, enables a perfect crystal lattice to have higher resistance to ,γ, irradiation.

关键词

聚四氟乙烯辐照效应结晶性质

Keywords

PolytetrafluoroethyleneRadiation effectCrystallization behavior

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