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首页> 外文期刊>Journal of Applied Polymer Science >Cure kinetics of bismaleimides as basis for polyimide-like inks for PolyJet (TM)-3D-printing
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Cure kinetics of bismaleimides as basis for polyimide-like inks for PolyJet (TM)-3D-printing

机译：为聚酰亚胺酰亚胺的固化动力学作为聚酰亚胺样油墨的基础（TM）-3D印刷

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摘要

Since polyimides are well known for their excellent chemical and thermal stability and outstanding mechanical properties there is increasing interest in developing polyimide-based inks to produce additively manufactured parts with properties superior to those of currently available materials. Usage of bismaleimides (BMI) as precursors allows polyimides to be fabricated via PolyJet (TM) printing (Stratasys Ltd., Rehovot, Israel). Characterization of the curing kinetics is a central part of process development, as fast curing initiated by UV light is desired. Here, a comprehensive study of thermal and UV curing of BMI oligomers with various molecular weights and chemical structures is presented. Fourier transform infrared spectroscopy serves as a tool for determining the curing degree. Furthermore, an estimation of the activation energy for thermal curing is performed. UV curing of the selected BMIs leads to highly crosslinked, thermoset polymers with excellent chemical resistance and thermal stability which are of great interest for PolyJet (TM) 3D printing. (c) 2018 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47244.
机译：由于聚酰亚胺以其优异的化学和热稳定性而众所周知，因此在开发基于聚酰亚胺的油墨的情况下，越来越突出的利益，以产生具有优于当前可用材料的性能的含有性能的加薄的制造部件。使用Bismale酰亚胺（BMI）作为前体允许通过Polyjet（TM）印刷（Stratasys Ltd.，Rehovot，以色列）制造聚酰亚胺。固化动力学的表征是过程开发的中心部分，因为需要通过UV光引发的快速固化。这里，提出了具有各种分子量和化学结构的BMI低聚物的热和UV固化的综合研究。傅里叶变换红外光谱用作用于确定固化度的工具。此外，执行用于热固化的激活能量的估计。所选BMI的UV固化导致高度交联的热固性聚合物，具有优异的耐化学性和热稳定性，这对多射精（TM）3D印刷具有极大的兴趣。 （c）2018年作者。中国威廉公司J.Phop的应用聚合物科学学报。聚合物。 SCI。 2019,136,47244。

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