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首页> 外文期刊>Journal of Applied Polymer Science >Trifunctional quinoxaline-based maleimide and its polymer alloys with benzoxazine: Synthesis, characterization, and properties
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Trifunctional quinoxaline-based maleimide and its polymer alloys with benzoxazine: Synthesis, characterization, and properties

机译：三官能喹喔啉基马来酰亚胺及其聚合物合金与苯并恶嗪：合成，表征和性质

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摘要

Novel quinoxaline-based trismaleimide (2,3-di[3-maleimido]phenyl-6- maleimidoquinoxaline, namely TQMI) and its polymer alloys with 3-phenyl-3,4-dihydro-2H-1,3-benzoxazine (P-a) were successfully prepared and characterized. Differential scanning calorimetry investigation of TQMI exhibited distinct double exothermic peaks, which implied that the curing behavior of different type of maleimide group was discrepant. The curing temperature of P-a/TQMI prepolymers was lower than that of both neat TQMI and P-a monomer. The temperatures at 5% (T-5) and 10% (T-10) weight loss and the char yield (Y-c) of cured TQMI at 800 degrees C reached 513 degrees C, 524 degrees C, and 63.5%, respectively, which were much higher than the record of traditional 4,4 '-bismaleimideodiphenylmethane (BMDPM) resin as well as most of other reported bismaleimide resins. Moreover, the addition of TQMI enhanced thermal stability, glass transition temperature (T-g), and limiting oxygen index of benzoxazine resin dramatically. Attractively, theT(g)value of P-a/TQMI copolymer at 30 wt% TQMI loadings was approximately 20 degrees C higher than that of P-a/BMDPM copolymer owing to the bulky quinoxaline group.
机译：成功制备并表征了新型喹啉基三马来酰亚胺（2,3-二[3-马来酰亚胺]苯基-6-马来酰亚胺喹啉，简称TQMI）及其与3-苯基-3,4-二氢-2H-1,3-苯并恶嗪（P-a）的聚合物合金。差示扫描量热法对TQMI的研究显示出明显的双放热峰，这意味着不同类型的马来酰亚胺基团的固化行为是不同的。P-a/TQMI预聚体的固化温度低于纯TQMI和P-a单体的固化温度。在5%（T-5）和10%（T-10）的温度下，800℃固化TQMI的失重率和焦炭产率（Y-c）分别达到513℃、524℃和63.5%，远高于传统的4,4’-双马来酰亚胺二苯甲烷（BMDPM）树脂以及大多数其他已报道的双马来酰亚胺树脂的记录。此外，TQMI的加入显著提高了苯并恶嗪树脂的热稳定性、玻璃化转变温度（T-g）和极限氧指数。有吸引力的是，由于喹喔啉基团体积庞大，在30 wt%TQMI负载下，P-a/TQMI共聚物的T（g）值比P-a/BMDPM共聚物高约20℃。

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