THE EFFECT OF γ-IRRADIATION ON POLYPROPYLENE

Lü Gongxu; W. Ametani; M. Tsuchiya; M. Imai

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THE EFFECT OF γ-IRRADIATION ON POLYPROPYLENE

更新时间：2023-04-23

- THE EFFECT OF γ-IRRADIATION ON POLYPROPYLENE
- Journal of Radiation Research and Radiation Processing Vol. 6, Issue 2, Pages: 17-22(1988)
- 作者机构：
  
  1.北京师范大学，北京
  2.日本东京都立同位素综合研究所
- 作者简介：
- 基金信息：
- DOI：
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Lü Gongxu, W. Ametani, M. Tsuchiya, et al. THE EFFECT OF γ-IRRADIATION ON POLYPROPYLENE. [J]. Journal of Radiation Research and Radiation Processing 6(2):17-22(1988)
DOI：

Lü Gongxu, W. Ametani, M. Tsuchiya, et al. THE EFFECT OF γ-IRRADIATION ON POLYPROPYLENE. [J]. Journal of Radiation Research and Radiation Processing 6(2):17-22(1988) DOI：

摘要

本文研究了在室温下，真空或空气存在时γ射线对等规聚丙烯片的辐照效应。其中包括物理、热性质以及红外光谱的变化。并通过红外光谱计算了结晶度的改变，通过热熔解曲线计算了熔点的改变。还特别比较了上述两种条件下照射后的贮存时间效应。,计算了聚丙烯的射辐交联G值和裂解G值分别为G,(交联),=0.202, G,(裂解),）=0.243。,实验结果表明，等规聚丙烯在空氧中辐照主要是裂解反应。当吸收剂量大于100 kGy时，伸张强度完全丧失。当吸收剂量为25 kGy时，存放三个月后则完全失去机械强度。而在真空条件下辐照的样品，其机械强度的改变要小得多。

Abstract

Change of mechanical strength, thermal properties, and IR spectroscopy were studied for the ,γ, ray irradiation of isotactic polypropylene under various conditions, such as vacuum or air or at room temperature.,The change of crystalinity was calculated from the IR spectroscopy and the change of melting point was measured too. And the effects of storage time were compared.,For irradiation under vacuum, the G value of crosslinking and scission were calculated by measuring gel fraction as follows:,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648947&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648949&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648948&type=,There was a significant decrease in the tensile break stress and strain of irradiated polypropylene in air for all doses but slight decrease in stress and strain of irradiated polypropylene in vacuum.

关键词

聚丙烯γ辐照伸张强度红外光谱DsCG值

Keywords

Polypropyleneγ IrradiationStressStrainIR spectroscopyDSCG-Value

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