Xi Xianfeng, Chen Yousi, Wang Jie, Li Yaoyao, Shao Xiangdong, He Liu, Huang Qing, Pei Xueliang
Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences Ningbo Zhejiang 315201 China
University of Chinese Academy of Sciences 19 A Yuquan Rd., Shijingshan District Beijing 100049 China.
RSC Adv. 2018 Jun 27;8(41):23339-23347. doi: 10.1039/c8ra04064h. eCollection 2018 Jun 21.
A novel multiscale hydrothermal carbon layer (MHTCL) for carbon fiber (CF) surface modification was developed. The MHTCL is a multiscale high-disorder amorphous carbon coating with a colored appearance, abundant functional groups, multiscale roughness, a large specific surface area, a high surface energy, and good wetting ability. The O/C atom ratios of the MHTCL-modified CF were in the range of 0.17-0.23, and the functional groups were mainly C-O and C[double bond, length as m-dash]O groups. During the low-concentration glucose hydrothermal treatment with the carbon fibers (CFs), the glucose generates furan derivative intermediates, which adsorb on the surface of the CFs and carbonize continuously, finally forming the MHTCL on the CFs. The fracture and rupture of the MHTCL during the forming process produce new nucleation centers on the CF surface, which result in abundant multiscale irregular particles. The MHTCL is a facile method for the modification of CFs. The fabrication of the CF composites demonstrated that the MHTCL obviously increases the interlaminar shear strength of the CF/polyimide composite and the interfacial interaction of the CF and polyetheretherketone.
开发了一种用于碳纤维（CF）表面改性的新型多尺度水热碳层（MHTCL）。MHTCL是一种多尺度高无序非晶碳涂层，具有彩色外观、丰富的官能团、多尺度粗糙度、大比表面积、高表面能和良好的润湿性。MHTCL改性CF的O/C原子比在0.17 - 0.23范围内，官能团主要为C - O和C = O基团。在用碳纤维（CFs）进行低浓度葡萄糖水热处理过程中，葡萄糖生成呋喃衍生物中间体，这些中间体吸附在CFs表面并持续碳化，最终在CFs上形成MHTCL。MHTCL在形成过程中的断裂和破裂在CF表面产生新的成核中心，这导致了大量多尺度不规则颗粒的形成。MHTCL是一种简便的CFs改性方法。CF复合材料的制备表明，MHTCL显著提高了CF/聚酰亚胺复合材料的层间剪切强度以及CF与聚醚醚酮的界面相互作用。
