当前位置: X-MOL 学术Compos. Part A Appl. Sci. Manuf. › 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.)
The effect of sizing and surface oxidation on the surface properties and tensile behaviour of recycled carbon fibre: an end-of-life perspective
Composites Part A: Applied Science and Manufacturing ( IF 8.7 ) Pub Date : 2020-08-17 , DOI: 10.1016/j.compositesa.2020.106072
Di He , Vi Kie Soo , Filip Stojcevski , Wojciech Lipiński , Luke C. Henderson , Paul Compston , Matthew Doolan

Carbon fibre is not widely recycled due to the inconsistent tensile properties of the recycled carbon fibre (RCF). It is unclear whether the surface treatments for virgin carbon fibre (VCF) have an impact on the quality of RCF. This paper presents an experimental investigation into the effect of epoxy sizing and electrochemical oxidation for VCF on the tensile and surface properties of RCF recycled by pyrolysis. Carbon fibre with sizing, or surface oxidation, or both, experience a reduction in tensile strength by 44.6%, 43.7% and 50.1%, respectively, during the recycling process, compared to 19.8% for un-treated fibre. Surface-treated carbon fibres exhibit more surface defects (ID/IG from 1.6 to 2.7 from Raman spectroscopy) and a smaller average crystallite size (from 7.6 nm to 6.2 nm from X-ray diffraction) after recycling. The results indicate that the interactions between the sizing agent and surface functional groups contribute to the down-cycling of carbon fibre.



中文翻译:

上浆和表面氧化对再生碳纤维的表面性能和拉伸行为的影响:寿命终止观点

由于再生碳纤维(RCF)的拉伸性能不一致,因此碳纤维没有得到广泛的回收。尚不清楚原始碳纤维(VCF)的表面处理是否会影响RCF的质量。本文对VCF的环氧施胶和电化学氧化对热解回收的RCF的拉伸和表面性能的影响进行了实验研究。在上浆过程中,上浆或表面氧化或两者兼有的碳纤维的抗张强度分别降低了44.6%,43.7%和50.1%,而未处理的纤维则为19.8%。经表面处理的碳纤维表现出更多的表面缺陷(I D / I G回收后的平均微晶尺寸(从拉曼光谱法得到的1.6到2.7)和较小的平均微晶尺寸(从X射线衍射得到的结果是从7.6 nm到6.2 nm)。结果表明,上浆剂与表面官能团之间的相互作用有助于碳纤维的向下循环。

更新日期:2020-08-17
down
wechat
bug