| 硬弹性聚丙烯的表观密度特征 |
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| 引用本文： | 胡继文,黄勇,沈家瑞. 硬弹性聚丙烯的表观密度特征[J]. 广州化学, 2002, 27(3): 6-9 |
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| 作者姓名： | 胡继文 黄勇 沈家瑞 |
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| 作者单位： | 1. 中国科学院广州化学研究所,广东,广州,510650
2. 华南理工大学,广东,广州,510641 |
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| 基金项目： | 广东省科委重点攻关课题(200201) |
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| 摘 要： | 研究了硬弹性聚丙烯形成过程中表观密度的变化特征。结果表明,熔体温度下降、所受拉伸比增加或冷却风速度升高均可使表观密度增加。硬弹性聚丙烯经热处理后,表观密度有所增加。硬弹性聚丙烯在拉伸过程中,表观密度先下降而后增加,呈现出最低值,这一变化规律与硬弹性聚丙烯中片晶分离形成微孔的特性有关。
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| 关 键 词： | 硬弹性 聚丙烯 表观密度 |
| 文章编号： | 1009-220X(2002)03-0006-04 |
| 修稿时间： | 2002-03-27 |
Apparent Density of Hard Elastic Polypropylene |
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| HU Ji-wen,HUANG Yong,SHEN Jia-rui. Apparent Density of Hard Elastic Polypropylene[J]. Guangzhou Chemistry, 2002, 27(3): 6-9 |
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| Authors: | HU Ji-wen HUANG Yong SHEN Jia-rui |
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| Affiliation: | HU Ji-wen1,HUANG Yong1,SHEN Jia-rui2 |
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| Abstract: | In this article, the apparent density of hard elastic polypropylene are studied. The results show that the apparent density of hard elastic polypropylene increases with a lower melt temperature, or a higher draft ratio, or a higher air blasting speed. The results also show that the apparent density of as-spun fiber increases with various annealing temperature. When hard elastic polypropylene hollow fibers are drawn to ratio 1.3-1.6 at room temperature, it would gain the lowest apparent density. |
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| Keywords: | hard elasticity polypropylene apparent density |
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