Pressure dependent modeling of thermoet epoxy-resins for theappllication in carbon composites

用于碳复合材料应用的热固性环氧树脂的压力相关建模

基本信息

批准号：
317456845
负责人：
Professor Dr.-Ing. Axel Herrmann
金额：
--
依托单位：
Faserinstitut Bremen e.V. (FIBRE)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/317456845?language=en
关键词：
Pressure dependent modeling thermoet epoxy

项目摘要

The objective of this proposal is the investigation of pressureinfluence on the curing behaviour of epoxy-resins as well as on theproperties and process-induced distortions of the final composite part.This shall be achieved by a free-volume dependent material modellingof the material properties and the consideration of pressure influenceon free volume. Thereby a strong coupling between the pressureacting on the resin and its thermo-chemical properties is achieved.This will answer the underlying research question: Can the effect ofpressure on the curing behaviour of epoxy resins be explained by freevolume theory? An application for the developed theory is thesimulation of the high pressure RTM process, a variant of the RTMprocess using higher process pressures of up to 200 bar. The highpressure allows a reduction of process cycle times, but with this highpressures the pressure influence on material properties can no longerbe neglected and have to be modelled in order to perform processsimulations. Investigations will be done on an exemplary material, theVERAFORCE 5200 resin system by Dow, which is a fast curing epoxyresin specifically developed for high pressure RTM. The findingsabout the behaviour of epoxy-resins under high pressures and themodelling of the cure behaviour will be transferable to other materials.

该提案的目的是调查对环氧树脂的固化行为以及最终复合部分的过程和过程引起的扭曲的调查。这应由自由体积依赖的材料模型来实现。考虑压力影响无体积的考虑。从而实现了树脂上的加压反应及其热化学特性之间的强烈耦合。这将回答基本的研究问题：按压对环氧树脂的固化行为的影响可以通过Freevolume Theory解释？开发理论的应用是对高压RTM过程的仿真，这是RTMPROCESS的一种使用高达200个BAR的RTMPROCESS的变体。 The highpressure allows a reduction of process cycle times, but with this highpressures the pressure influence on material properties can no longerbe neglected and have to be modelled in order to perform processsimulations. Investigations will be done on an exemplary material, theVERAFORCE 5200 resin system by Dow, which is a fast curing epoxyresin specifically developed for high pressure RTM. The findingsabout the behaviour of epoxy-resins under high pressures and themodelling of the cure behaviour will be transferable to other materials.