文献类型：期刊文献

英文题名：Improvement of carbon fiber/phenolic composite properties by low-loading graphene oxide and SiO 2 nanoparticles

作者：Wang, Zhenyu[1];Zhang, Yongzheng[1];Sun, Gangwei[2];Gao, Wei[1];Wang, Yanli[1];Zhan, Liang[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Green Chem Engn & Ind Catalysis, State Key Lab Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]Orinko Adv Plast Shanghai Co Ltd, Shanghai 200062, Peoples R China

年份：2024

卷号：365

外文期刊名：MATERIALS LETTERS

收录：;EI(收录号：20241515876661);WOS:【SCI-EXPANDED(收录号:WOS:001226111700001)】；

基金：This work was funded by the National Natural Science Foundation of China (No. 22075081, 52372045 and U1710252) and the Fundamental Research Funds for the Central Universities (JKD01231701) .

语种：英文

外文关键词：Thermal properties; Composite materials; Graphene oxide; SiO2 nanoparticles

摘要：As an ablative thermal protection material, the mechanical properties and ablative resistance of carbon fiber/ phenolic (C -Ph) composite should be improved to meet the high requirements in deep space exploration. Herein, the properties of C -Ph composites were improved by the synergistic effect of low -concentration graphene oxide (GO) solution and low mass fraction of SiO 2 nanoparticles. Compared to the unmodified C -Ph composite, the compressive strength of the modified composites was increased by 40.75 % and the linear and mass ablation rates were reduced by 17.78 % and 43.95 %, respectively. The introduction of GO effectively improved the interfacial bonding between the fiber and phenolic resin. Meanwhile, the uniformly dispersed SiO 2 nanoparticles resisted the applied loads, thus synergistically enhancing the mechanical properties of the composites. In terms of improving ablation resistance, GO promoted the graphitization of fibers and enhanced the stability of the char layer. Concurrently, SiO 2 nanoparticles reacted with the carbon matrix under high temperatures to form ablation -resistant SiC, thus synergistically enhancing the ablative properties of the composite.