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首页> 外文会议>International scientific and practical conference «New Polymer Composite Materials» >The Thermal Stability and Mechanical Properties of Non-Segregating Blends of Polyimides with Copoly(Urethane-Imide)s
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The Thermal Stability and Mechanical Properties of Non-Segregating Blends of Polyimides with Copoly(Urethane-Imide)s

机译：具有共聚物（氨基甲酸酯-IMIDE）的聚酰亚胺非分离混合物的热稳定性和机械性能

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摘要

The series of compositions containing thermodynamically incompatible flexible blocks of aliphatic polyesters and rigid blocks of aromatic bis(urethane)imides in the volume of polymers was obtained on the basis of multiblock (segmented) poly(urethane-imides) and related aromatic polyimides. The series includes segmented poly(urethane-imides) with different relative content of flexible and rigid blocks, non-segregating mixtures of poly(urethane-imides) and thermoplastic partially crystalline polyimide, statistical copolymers of poly(urethane-imide) with imide, and non-segregating mixtures of statistical copolymers with thermoplastic polyimide. The derived polymer systems were studied using thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. The deformation and strength properties of film samples are determined. It is shown that the properties of the studied polymers change as their content of imides blocks increases, and the transition from thermoplastic poly(urethane-imide) elastomers to thermoplastic polyimides is observed.
机译：基于多嵌段（分段）聚（氨基甲酸酯 - 酰亚胺）和相关芳族聚酰亚胺，获得含有热力学不相容的脂肪族聚酯和芳族聚酯和芳族双（氨基甲酸酯）嵌合体积的脂族聚酯和芳族双（氨基甲酸酯）刚性块的刚性块的组合物。该系列包括具有不同相对含量的柔性和刚性块的分段聚（氨基甲酸酯 - 酰亚胺），聚（氨基甲酸酯 - 酰亚胺）的非分离混合物和热塑性部分结晶的聚酰亚胺，与酰亚胺的聚（氨基甲酸酯 - 酰亚胺）的统计共聚物，具有热塑性聚酰亚胺的统计共聚物的非分离混合物。使用热重分析，差示扫描量热法和动态机械分析研究了衍生的聚合物系统。确定薄膜样品的变形和强度性质。结果表明，研究的聚合物的性质随着酰亚胺块的含量而变化，并且观察到从热塑性聚（氨基甲酸酰亚胺）弹性体与热塑性聚酰亚胺的过渡。

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