THERMAL-EXPANSION OF IRRADIATED POLYPROPYLENE FROM 10-340-K

被引：7
|
作者：
JAYANNA, HS
SUBRAMANYAM, SV
机构：
[1] Department of Physics, Indian Institute of Science, Bangalore
来源：
JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 09期
关键词：
D O I：
10.1007/BF01151674
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The coefficient of thermal expansion of gamma-irradiated polypropylene (PP) has been measured from 1 0-340 K by using the three-terminal capacitance technique. The samples were irradiated to 500 Mrad in air at room temperature with gamma rays from a Co-60 source at a dose rate of 0.26 Mrad h-1. The crystallinity of the sample was measured by X-ray diffraction technique. The crystallinity was found to decrease with radiation dose from 55% at 0 Mrad to 44.7% at 500 Mrad. The thermal expansion coefficient was found to be almost constant with radiation dose from 10-125 K and decreases with radiation dose from 125-340 K.
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收藏
页码：2423 / 2427
页数：5
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