| 聚氨酯／聚丙烯酸酯互穿聚合物网络的动态热机械特性 |
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| 引用本文： | 常林开,余守志.聚氨酯／聚丙烯酸酯互穿聚合物网络的动态热机械特性[J].河南科学,1999,17(4):370-373. |
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| 作者姓名： | 常林开 余守志 |
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| 作者单位： | [1]河南省科学院化学研究所 [2]河南省科学技术委员会 |
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| 摘 要： | 用动态机械法（ＤＭＡ）研究了聚氨酯／聚丙烯酸酯互穿事物网络（ＰＵ／ＰＥＡＩＰＮ）的动态机械特性，并分别与单纯的聚氨酯（ＰＵ）和聚丙烯酸乙酯（ＰＥＡ）的动态热机械性能进行对比。结果表明：在玻璃化温度以下，ＰＵ／ＰＥＡＩＰＮ的ＤＭＡ曲线振幅小于单纯的ＰＵ和ＰＥＡ；当完全进入高弹态后，ＩＰＮ的ＤＭＡ曲线振幅大于单纯的ＰＵ和ＰＥＡ。ＰＵ／ＰＥＡＩＰＮ的玻璃化转变温度别比ＰＵ和ＰＥＡ提高１６．２和３０．１度
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| 关 键 词： | 聚氨酯 聚丙烯酸酯 互穿聚合物网络 动态机械 |
Polyurethane/polyethyl acrylate interpenetraing polymer networks dynamic thermo-mechanical behaviour |
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| CHANG Lin kai\,ZHU Yan\,YU Shou zhi\.Polyurethane/polyethyl acrylate interpenetraing polymer networks dynamic thermo-mechanical behaviour[J].Henan Science,1999,17(4):370-373. |
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| Authors: | CHANG Lin kai\ ZHU Yan\ YU Shou zhi\ |
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| Institution: | CHANG Lin kai\+1,ZHU Yan\+1,YU Shou zhi\+2 |
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| Abstract: | The dynamic thermo-mechanical (DMA) behaviour of Polyurethane/Polyethgl Acrylate Interpenetrating Polymer Networks (PU/PEA IPN) was observed and then compared with those of Polyurethene (PU) and Polyethyl Acrylate (PEA), respectively. The results show that the amplitude in Glass State of PU/PEA IPN is smaller than that of PU or PEA; and in the high elastic state the situation is opposite. The temperature of glass translation (Tg) of PU/PEA IPN is 16.2 degree higher than PU and 30.1 degree higher PEA. The DMA curve of PU/PEA IPN shows that the process of glass translation is a gradual change-the amplitude amplifies gradually; there are no the obvious mutation and initial point of continuous oscillation. Above phenomenon proves that the phase segregation exists in the internal structure of PU/PEA IPN material. |
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| Keywords: | polyurethane/polyethyl acrylate interpenetrating polymer networks (PU/PEA IPN) dynamic thermo-mechanical phase segregation |
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