| LLDPE/HDPE共混体系的结晶动力学及力学性能研究 |
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| 引用本文： | 许晓秋,唐德敏,冯建新,张爽男,杨桦.LLDPE/HDPE共混体系的结晶动力学及力学性能研究[J].高分子材料科学与工程,1999,15(2):86-89. |
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| 作者姓名： | 许晓秋 唐德敏 冯建新 张爽男 杨桦 |
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| 作者单位： | 天津大学材料科学与工程系,天津,300072 |
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| 摘 要： | 对高密度聚乙烯和线性低密度聚乙烯共混体系的结晶动力学进行了研究，由差示扫描量热仪（ＤＳＣ）测得的非等温的结晶温升曲线，分析研究共混比率对共结晶动力学参数的影响。实验发现，Ａｖｒａｍｉ指数随着共混物组成的变化而有规律地变化。同时，通过偏光显微镜以及激光小角散射等实验方法，对结晶聚合物的晶体形成形态进行观察，验证了对于全部共混组成结晶结构增长的相似性，另一方面，利用拉伸试验等手段，对共混物的力学性能进
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| 关 键 词： | 线性低密度聚乙烯 高密度聚乙烯 结晶动力学 力学性能 |
| 修稿时间： | 1996-09-24 |
STUDY ON CRYSTALLIZATION KINETICS AND MECHANICAL PROPERTIES OF LINEAR LOW-DENSITY POLYETHYLENE/HIGH-DENSITY POLYETHYLENE |
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| Xu Xiaoqiu,Tang Demin,Feng Jianxin,Zhang Shuangnan,Yang Hua.STUDY ON CRYSTALLIZATION KINETICS AND MECHANICAL PROPERTIES OF LINEAR LOW-DENSITY POLYETHYLENE/HIGH-DENSITY POLYETHYLENE[J].Polymer Materials Science & Engineering,1999,15(2):86-89. |
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| Authors: | Xu Xiaoqiu Tang Demin Feng Jianxin Zhang Shuangnan Yang Hua |
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| Abstract: | In this article, crystallization kinetics of linear low density polyethylene(LLDPE)/high denstiy polyethylene(HDPE) blends was studied. The nonisothermal cystallization exotherms obtained by DSC were analyzed. Results indicated: the Avrami exponent varied from 3(corresponding to LLDPE) to 2(corresponding to HDPE) is observed. At the same time, crystal morphology of the blends was observed by polarization microscope and SALS, which indicated the identical crystalline grown of the blends. In the other hand mechanical properties of the blend were researched. |
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| Keywords: | LLDPE HDPE crystallization kinetics mechanical properties |
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