| 差示扫描量热仪评价聚丙烯薄膜专用树脂的热性能 |
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| 引用本文： | 姚自余,贾慧青,杨芳,范明.差示扫描量热仪评价聚丙烯薄膜专用树脂的热性能[J].现代塑料加工应用,2012,24(1):46-49. |
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| 作者姓名： | 姚自余 贾慧青 杨芳 范明 |
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| 作者单位： | 1. 中国石油石油化工研究院兰州化工研究中心,甘肃兰州,730060
2. 中国石油石油化工研究院,北京,100195 |
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| 摘 要： | 用差示扫描量热仪(DSC)对T38F聚丙烯薄膜专用树脂热性能进行了研究,对T38F聚丙烯薄膜专用树脂的熔融结晶行为、非等温结晶特性、热分级及氧化诱导期进行分析,并与目前市场上加工性能较好的T38F聚丙烯薄膜专用树脂进行了对比分析。结果表明:各试样的熔融温度相近,试样3的结晶温度较另2个试样的提高大约3℃。试样3的连续自成核热分级(SSA)熔融曲线较另2个试样有明显的差异。试样1的氧化诱导期比试样2和3的长且测定的重复性明显较好,说明试样2和3的抗氧剂分布不均匀。
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| 关 键 词： | 差示扫描量热仪 聚丙烯 熔融结晶 非等温结晶性 氧化诱导期 连续自成核热分级 |
Evaluating Thermal Properties of Polypropylene Special Resin for Film by Differential Scanning Calorimetry |
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| Yao Ziyu
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Jia Huiqing
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Yang Fang
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Fan Ming.Evaluating Thermal Properties of Polypropylene Special Resin for Film by Differential Scanning Calorimetry[J].Modern Plastics Processing and Applications,2012,24(1):46-49. |
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| Authors: | Yao Ziyu Jia Huiqing Yang Fang Fan Ming |
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| Affiliation: | 1.Lanzhou Chemical Research Center Petrochemical Research Institute, PetroChina,Lanzhou,Gansu,730060; 2.Petrochemical Research Institute of PetroChina,Beijing,100195) |
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| Abstract: | Thermal properties of PP(brand T38F,feedstock for film) were studied by differential scanning calorimetry(DSC).Melting-cyrstallizing behaviors,non-isothermal features,thermal fractionation,and oxidative induction time(OIT) of PP were analyzed.The data of PP was compared with those of commercial products with good processing properties.The results show that melting temperature of all samples is similar.Crystallization temperature of sample 3 is about 3 ℃ higher than that of sample 1 and sample 2,and the successive self-nucleation and annealing(SSA)melting curve of sample 3 differs greatly from that of the other two samples.Sample 1 exhibites a longer OIT and a remarkably better repeatability than sample 1 and sample 2,from which an uneven distribution of antioxidants in sample 2 and sample 3 matrix is testified. |
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| Keywords: | differential scanning calorimetry polypropylene melting-crystallizing nonisothermal crystallization behavior oxidation induction time successive self-nucleation and annealing |
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