| 软段分子链结构对PUF性能的影响 |
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| 引用本文： | 梁书恩,王艳艳,田春蓉,赵秀丽,王建华. 软段分子链结构对PUF性能的影响[J]. 聚氨酯工业, 2012, 27(3): 43-46 |
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| 作者姓名： | 梁书恩 王艳艳 田春蓉 赵秀丽 王建华 |
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| 作者单位： | 1. 中国工程物理研究院化工材料研究所 绵阳621900
2. 山东东大一诺威聚氨酯有限公司 淄博255086 |
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| 基金项目： | 中国工程物理研究院科学技术发展基金，四川省生物质改性材料工程技术研究中心(西南科技大学)开放基金 |
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| 摘 要： | 通过将聚乙二醇(PEG)、聚己内酯(PCL)、聚乳酸(PLA)和聚四氢呋喃醚(PTMG)等不同特性的聚合物链段引入聚氨酯(PU)基体,制备了具有不同软段结构的聚氨酯泡沫塑料(PUF)。考察了不同软段分子链结构对PUF力学性能、热性能及在土壤中降解性能的影响。结果表明,随着软段中PEG或PLA含量的增加,PUF的拉伸强度下降;不同软段结构PUF的玻璃化转变温度顺序为:PTMG1000
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| 关 键 词： | 聚氨酯泡沫 分子链结构 降解性能 力学性能 |
Influence of Soft Segment Structure on Polyurethane Foam Performance |
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| Liang Shuen , Wang Yanyan , Tian Chunrong , Zhao Xiuli , Wang Jianhua. Influence of Soft Segment Structure on Polyurethane Foam Performance[J]. Polyurethane Industry, 2012, 27(3): 43-46 |
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| Authors: | Liang Shuen Wang Yanyan Tian Chunrong Zhao Xiuli Wang Jianhua |
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| Affiliation: | 1 ( 1. Institute of Chemical Materials of CAEP, Mianyang 621900, China) (2. Shandong Dongda INOV Polyurethane Co. Ltd, Zibo 255086, China) |
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| Abstract: | Through incorporation of different molecular chains with different properties into polyurethane matrix, such as poly（ ethylene glycol） （PEG）, poly（ε-caprolactone） （PCL）, poly（lactic acid） （PLA） or poly（tet- ramethylene oxide） （PTMG）, polyurethane foams （PUF） with different molecular structure were prepared. Influ- ences of soft segment molecular structure on PUF materials＇ mechanical property, thermal property and degradation property in soil were studied systematically. The result showed that tensile strength of PUFs decreased gradually with increasing of PEG or PLA chain content in PUF. The glass transition temperature sequence of PUF with different soft segment structure was PTMG1000 〈 PEG1000 〈 PCL210N 〈 PLA1000. The degradation rate order was PTMG1000 〈 PLA1000 〈 PCL210N 〈 PEG1000. With controlling different molecular chains ratio in soft segment, PUFs could have well mechanical performance and get fairly fast degradation rates. |
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| Keywords: | polyurethane foam molecular structure degradability mechanical performance |
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