THE DENSITY CHANGE OF POLYPROPYLENE RELEVANCE TO ITS MORPHOLOGY AND OTHER FACTORS

Yu Shui; Chen Wenxiu

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THE DENSITY CHANGE OF POLYPROPYLENE RELEVANCE TO ITS MORPHOLOGY AND OTHER FACTORS

更新时间：2023-04-23

- THE DENSITY CHANGE OF POLYPROPYLENE RELEVANCE TO ITS MORPHOLOGY AND OTHER FACTORS
- Journal of Radiation Research and Radiation Processing Vol. 11, Issue 4, Pages: 207-212(1993)
- 作者机构：
  
  1.北京师范大学，北京　100875
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Yu Shui, Chen Wenxiu. THE DENSITY CHANGE OF POLYPROPYLENE RELEVANCE TO ITS MORPHOLOGY AND OTHER FACTORS. [J]. Journal of Radiation Research and Radiation Processing 11(4):207-212(1993)
DOI：

Yu Shui, Chen Wenxiu. THE DENSITY CHANGE OF POLYPROPYLENE RELEVANCE TO ITS MORPHOLOGY AND OTHER FACTORS. [J]. Journal of Radiation Research and Radiation Processing 11(4):207-212(1993) DOI：

摘要

含不同添加剂（二氧化钛、炭黑、酞菁蓝、还原橙）聚丙烯密度与结晶温度、退火以及辐照有关，密度的变化取决于样品的结晶度和球晶体积。辐照后的聚丙烯在60℃低温下退火，密度的增加与结晶温度和退火时间有关，密度最终趋于一个极限值，主要是由于无定形区小分子形成结晶所致。辐照而未退火只能使样品密度发生轻微的变化。

Abstract

The relation of density of polypropylene without and with various additive(carbon black, titanium dioxide, phthalocyanine blue and helindon orange)versus its isothermal crystallization temperature, annealing period and irradiation was examined in this paper. The change of density was affected by the crystalline degree and the spherulite diameter of polypropylene samples.The increasing value of irradiated polypropylene density depended on its crystallization temperature and annealing period, which increased up to a maximum value for each given crystallization temperature, due to the crystallization of smaller molecules, which were formed by radiation chian scission. The densities were change very less after irradiation without annealing.

关键词

聚丙烯密度退火效应等温结晶辐照

Keywords

PolypropyleneDensityAnnealingAdditivesMorphologyIrradiation

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College of Chemistry and Chemical Engineering, Xinjiang University

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