Effect of miscibility and forced compatibility on damping properties of CIIR/PAc blend
Effect of miscibility and forced compatibility on damping properties of CIIR/PAc blend
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DOI：
10.1002/app.24252
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发表时间：
2006-11
影响因子：
3
通讯作者：
Guanglin Huang;Xiangdong He;Jingrong Wu;Qiying Pan;Jing Zhen;Zhu Hong
中科院分区：
文献类型：
--
作者：
Guanglin Huang;Xiangdong He;Jingrong Wu;Qiying Pan;Jing Zhen;Zhu Hong
本研究以氯化丁基橡胶(CIIR)与聚丙烯酸酯(PAC)按不同摩尔比合成的氯化丁基橡胶(CIIR)与聚丙烯酸酯(PAC)共混，制备了一种新型的减振材料。实验结果表明，无论是共固化体系还是非共固化体系，都能使CIIR的损耗峰向高温区移动，阻尼值不会显著降低，从而将CIIR的有效减振功能区扩大到环境温度附近。在前者体系中，CIIR与PAC的热力学相容性在一定程度上由PAC的分子设计所决定，而在后者体系中，共硫化网络在改善相容性和减少峰分裂方面发挥了更显著的作用，但热应力对CIIR TLL转变的抑制作用仍不可忽略。此外，CIIR与PAC共固化产生的过渡态不能使相分离完全发生，从而导致共固化的CIIR/PAC共混物的相形态发生变形。正是不同粒径的热力学相容和强迫相容的影响，使得外来PAC对CIIR TLL相变的抑制作用是可控的。#2006威利期刊，Inc.应用理科杂志102：3127-3133,2006
In this study, a kind of novel damping materials was prepared based on the blend of chlorinated butyl rubber (CIIR) and polyacrylate (PAc) synthesized by different molar ratio of butyl methacrylate and ethyl acrylate. Research results from experiments and analyses by employing DMA, TEM, and FTIR show that whether at a cocured system or noncocured system, it can be achieved to shift a loss peak of CIIR towards a higher temperature region and to keep the damping value from markedlly decreasing, which broadens the effective damping function area of CIIR to the vicinity of ambient temperature. In the former system, the thermodynamical miscibility of CIIR and PAc, to some extent, is predominated by the molecular design of PAc, while in the latter system, covulcanized networks play a more significant role in improving compatibility and abating the peak split, though the suppression effect of thermal stress on the transition of CIIR Tll transition still can not be neglected. Furthermore, transition state derived from the cocuring CIIR and PAc cannot make the phase separation completely take place, and consequently results in the deformation of phase morphology of the cocured CIIR/PAc blend. It is the influence of thermodynamics miscibility and forced compatibility in different size that makes the suppression effect of foreign PAc on CIIR Tll transition be controllable. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 3127–3133, 2006