Preparation and properties of carbon fiber reinforced bio-based degradable acetal-linkage-containing epoxy resin composites by RTM process,Polymer Composites

当前位置： X-MOL 学术 › Polym. Compos. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Preparation and properties of carbon fiber reinforced bio-based degradable acetal-linkage-containing epoxy resin composites by RTM process
Polymer Composites ( IF 4.8 ) Pub Date : 2023-05-02 , DOI: 10.1002/pc.27381
Chun Yan _{1,

2} , Jun Wei _{1,

3} , Yingdan Zhu _{1,

2} , Haibing Xu ₁ , Dong Liu ₁ , Gang Chen ₁ , Xiaoqing Liu ₁ , Jinyue Dai ₁ , Dongxi Lv ₁

Affiliation

The recycling of carbon fiber (CF) reinforced bio-based degradable epoxy resin composites is of great significance for resource saving, environment protection and sustainable development of economy and society. Resin transfer molding (RTM) has been recognized as one of the most promising processes to manufacture CF Reinforced polymeric composites cost-effectively. The bio-based diglycidyl ether pentaerythritol vanillin diacetal (DEPVD) epoxy resin used in this study is an epoxy resin that can be degradable under mild conditions. And its CF composites were prepared by the RTM process using DDS as a curing agent and low viscosity bisphenol A-E51 epoxy resin as a diluent. The chemical rheological properties, curing behavior, thermal stability, dynamic viscoelasticity and mechanical properties of DDS-E51-DDS epoxy resin were investigated. It is found that the increase of DEPVD content is beneficial to improve the mechanical properties, T_g and solid residue after thermal degradation of DEPVD-E51-DDS epoxy resin. Moreover, the effects of DEPVD content in epoxy resin on the mechanical properties of CF/DEPVD-E51-DDS composites were evaluated. When the DEPVD content is 70%, the tensile and flexural strength of CF/EPVD-E51-DDS composites are 1649.4 MPa and 1207.4 MPa, respectively. The degradability and mechanism of CF/DEPVD-E51-DDS composites were further investigated. CF/DEPVD-E51-DDS composites containing 70% DEPVD have excellent degradability, and the recycled CFs exhibit comparable mechanical properties to the virgin CFs, which demonstrates a novel way to recover the high-quality of used CFs.

中文翻译：

RTM工艺碳纤维增强生物基可降解含缩醛键环氧树脂复合材料的制备及性能

碳纤维（CF）增强生物基可降解环氧树脂复合材料的回收利用对于节约资源、保护环境和经济社会可持续发展具有重要意义。树脂传递模塑 (RTM) 被认为是经济高效地制造 CF 增强聚合物复合材料最有前途的工艺之一。本研究中使用的生物基二缩水甘油醚季戊四醇香兰素二缩醛（DEPVD）环氧树脂是一种在温和条件下可降解的环氧树脂。以DDS为固化剂、低粘度双酚A-E51环氧树脂为稀释剂，采用RTM工艺制备CF复合材料。研究了DDS-E51-DDS环氧树脂的化学流变性能、固化行为、热稳定性、动态粘弹性和力学性能。DEPVD-E51-DDS环氧树脂热降解后的T _{g和固体残留物。}此外，还评估了环氧树脂中DEPVD含量对CF/DEPVD-E51-DDS复合材料力学性能的影响。当DEPVD含量为70%时，CF/EPVD-E51-DDS复合材料的拉伸强度和弯曲强度分别为1649.4 MPa和1207.4 MPa。进一步研究了CF/DEPVD-E51-DDS复合材料的降解性能和机理。含有 70% DEPVD 的 CF/DEPVD-E51-DDS 复合材料具有优异的降解性，回收的 CF 表现出与原始 CF 相当的机械性能，这展示了一种回收高质量废旧 CF 的新方法。

更新日期：2023-05-02

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南