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首页> 外文期刊>Journal of Applied Polymer Science >Polyetherimide-Modified Bismaleimide Resins.II.Effect of Polyetherimide Content
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Polyetherimide-Modified Bismaleimide Resins.II.Effect of Polyetherimide Content

机译：聚醚酰亚胺改性的双马来酰亚胺树脂II。聚醚酰亚胺含量的影响

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摘要

A novel polyetherimide was prepared and used to improve the toughness of bismaleimide resin composed of bis(4-maleimidediphenyl) methane and O,O'-diallyl bisphenol A.The morphologies of the modified resins change from spherical particles to an inverted phase structure, depending on the modifier's content based on the scanning electronic microscopy results.Dynamic mechanical analysis is also used to characterize morphologies of the modified resins. The phase-separation process of the modified system is traced by time-resolved light scattering.The change in the light-scattering profile with curing time showed that the phase separation mechanism depended on the modifier concentration.Phase separation took place via the spinodal decomposition mechanism in the PEI 15-phr- and 20-phr-modified system.The fracture energy (G_(IC) increased with PEI content in the modified system;in the PEI 15-phr-modified system,the G_(IC) value was three times greater than that of the unmodified BMI resin.
机译：制备了一种新型的聚醚酰亚胺并将其用于提高由双（4-马来酰亚胺二苯基）甲烷和O，O'-二烯丙基双酚A组成的双马来酰亚胺树脂的韧性。改性树脂的形态从球形颗粒变为反相结构，具体取决于基于扫描电子显微镜结果对改性剂的含量进行分析。动态力学分析还用于表征改性树脂的形态。通过时间分辨光散射追踪了改性体系的相分离过程，光散射曲线随固化时间的变化表明相分离机理取决于改性剂浓度，通过旋节线分解机理进行相分离。在PEI 15-phr和20-phr改性体系中，断裂能（G_（IC）随PEI含量的增加而增加;在PEI 15-phr改性体系中，G_（IC）值为3是未改性的BMI树脂的两倍。

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