论文部分内容阅读
本文研究了聚甲基丙烯酸甲酯/聚丙烯酸乙酯互穿网络体系(PMMA/PEALIPN)相分离和组分配比对其相逆转、相态结构及动态力学性能的影响.同时,对LIPN与其相应的混合乳液体系的结构和阻尼特性进行比较.结果表明,LIPN体系由于存在网络的相互贯穿,与混合体系相比其相分离程度低,出现精细结构,密度较高.当丙烯酸乙酯(EA)含量低时,PEA呈细胞结构分散在PMMA连续相中,随EA量的增加,体系出现相逆转并在EA体积含量为48％至86％范围内呈两相连续,各种性能发生突变和具有高阻尼特性.实数模量的实验点服从用Halpin-Tsai-Nielsen模量上、下限方程和描述两相连续的对数混合律三个方程结合计算的理论曲线.
In this paper, the effects of phase separation and compositional ratio of PMMA / PEALIPN on the phase reversal, phase structure and dynamic mechanical properties were studied.At the same time, The results show that LIPN system has fine structure and high density due to the existence of network interpenetrating with each other and low phase separation compared with the mixed system.When the content of ethyl acrylate (EA) When the content is low, the cellular structure of PEA is dispersed in the PMMA continuous phase. With the increase of EA content, the system appears phase reversal and the two phases are continuous in the range of 48% to 86% High Damping Properties The experimental points for the real modulus follow the theoretical curve combined with the three equations describing the Halpin-Tsai-Nielsen modulus upper and lower bound equations and the logarithmic mixing law describing two consecutive phases.