Cui Xuejun, Ma Lichun, Wu Guangshun
School of Chemistry and Materials Science, Ludong University, Yantai 264025, China.
Institute of Polymer Materials, Qingdao University, Qingdao 266071, China.
Polymers (Basel). 2020 Mar 23;12(3):712. doi: 10.3390/polym12030712.
A novel and effective strategy was first proposed for the codeposition of a mussel-inspired nanohybrid coating with excellent wettability onto the surface of carbon fibers (CFs) by simultaneous polymerization of bioinspired dopamine (DA) and hydrolysis of commercial tetraethoxysilane (TEOS) in an eco-friendly one-pot process. Mussel-inspired nanohybrids could be adhered onto the surface of CFs firmly. The novel modification could afford sufficient polar groups and significantly improve fiber surface roughness and energy without decreasing fiber intrinsic strength, which were advantageous to promote interfacial compatibility and wettability between CFs and matrix resin. As a result, the interfacial shear strength of composites increased to 48.21 ± 1.45 MPa compared to that of untreated composites 29.47 ± 0.88 MPa. Meanwhile, the nanohybrid coating increased significantly composites' hydrothermal aging resistance. The efficient strategy shows a promising and green platform of surface functionalization of CFs for preparing advanced polymer composites arising from broadly mechanical-demanding and energy-saving usages.
首次提出了一种新颖有效的策略，通过在环保的一锅法中同时聚合受贻贝启发的多巴胺（DA）和商业四乙氧基硅烷（TEOS）水解，将具有优异润湿性的受贻贝启发的纳米杂化涂层共沉积到碳纤维（CFs）表面。受贻贝启发的纳米杂化物可以牢固地附着在CFs表面。这种新颖的改性可以提供足够的极性基团，并显著提高纤维表面粗糙度和能量，而不会降低纤维的固有强度，这有利于促进CFs与基体树脂之间的界面相容性和润湿性。结果，复合材料的界面剪切强度提高到48.21±1.45 MPa，而未处理复合材料的界面剪切强度为29.47±0.88 MPa。同时，纳米杂化涂层显著提高了复合材料的抗水热老化性能。该有效策略为CFs的表面功能化提供了一个有前景的绿色平台，用于制备因广泛的机械需求和节能用途而产生的先进聚合物复合材料。
