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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and Properties of High Performance Phthalide-Containing Bismaleimide Reinforced Polydicyclopentadiene
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Preparation and Properties of High Performance Phthalide-Containing Bismaleimide Reinforced Polydicyclopentadiene

机译：高性能邻苯二甲酸酯双马来酰亚胺增强聚二环戊二烯的制备及性能

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摘要

A series of phenolphthalein-containing bismaleimide (PPBMI) reinforced polydicyclopentadiene blends (PPBMI/polyDCPD) were prepared via the ring-opening metathesis polymerization of DCPD in the presence of PPBMI. The crosslinked networks between PPBMI and polyDCPD backbones resulted in the reinforced structures. The curing behavior, thermal, and mechanical properties were investigated. Differential scanning calorimetry investigations showed the samples exhibit similar singular exothermic peak, and the exothermic peak of the PPBMI/polyDCPD blends slightly shifted to a lower temperature direction compared with the unfilled polyDCPD, meanwhile, the exothermic peak of the PPBMI/polyDCPD blends slightly shifts back to a higher temperature direction with the PPBMI content increased. Both dynamic mechanical analysis and thermo gravimetric analysis measurements revealed the optimal thermal performance of PPBMI/poly DCPD was obtained with 20 wt % loading of PPBMI. In addition, while PPBMI content increased, the weight loss peak at 100–200℃ disappeared and the temperature of maximum rate of decomposition (T_(d,max)) increased. Moreover, bending tests showed the best mechanical performance was achieved at 5 wt % loading of PPBMI in blends.
机译：在PPBMI存在下，通过DCPD的开环易位聚合，制备了一系列含酚酞的双马来酰亚胺（PPBMI）增强的聚二环戊二烯共混物（PPBMI / polyDCPD）。 PPBMI和polyDCPD主干之间的交联网络形成了加固结构。研究了固化行为，热性能和机械性能。差示扫描量热法研究显示，样品表现出相似的奇异放热峰，与未填充的polyDCPD相比，PPBMI / polyDCPD共混物的放热峰向较低的温度方向移动，同时，PPBMI / polyDCPD共混物的放热峰向后移动。随着PPBMI含量的增加，温度升高。动态力学分析和热重分析测量均显示PPBMI /聚DCPD的最佳热性能是由20 wt％的PPBMI负载获得的。另外，随着PPBMI含量的增加，在100–200℃时失重峰消失，最大分解速率（T_（d，max））升高。此外，弯曲试验表明，在共混物中PPBMI的含量为5 wt％时，可获得最佳的机械性能。

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