Simultaneous improvement of interfacial bonding and thermal resistance of carbonaceous fiber/silicone composite coatings modified with aniline-methyl-triethoxysilane

被引：6

作者：

Liu, Siyu ^{[1
,2
]}

Yu, Meijie ^{[1
,2
]}

Feng, Yuanjun ^{[1
,2
]}

Liang, Xuechen ^{[1
,2
]}

Zhang, Shuting ^{[1
,2
]}

Wu, Lianfeng ^{[3
]}

Wang, Xianming ^{[3
]}

Wang, Chengguo ^{[1
,2
]}

机构：

[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut Proc Mat, Minist Educ, State Key Lab Crystal Mat, Jinan 250061, Shandong, Peoples R China

[2] Shandong Univ, Carbon Fiber Engn Res Ctr, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China

[3] Marine Chem Res Inst Co Ltd, State Key Lab Marine Coatings, Qingdao 266071, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2023年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Carbonaceous fiber; Coupling agent; Silicone resin; Interfacial bonding; Thermal resistance; SILICONE RESIN COMPOSITES; MECHANICAL-PROPERTIES; SURFACE MODIFICATION; FIBER; RUBBER; STRENGTH; PERFORMANCE; MATRIX; INTERPHASE; NANOTUBES;

D O I：

10.1016/j.porgcoat.2023.107735

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Mechanical properties and thermal resistance reinforcement were achieved by a one-step dipping method, in which an aniline-methyl-triethoxysilane (AMT) coupling agent was grafted onto the carbonaceous fiber (CF) to fabricate CF/silicone resin (SR) composite coatings. Micromorphology and structure analysis of carbonaceous fibers showed that the AMT modification increase the roughness and the uniformity on the fiber surface, resulting in the link between AMT and fiber surface, and the polysiloxane formation by polymerization between the Si-OH groups. The AMT modification of the fiber surface introduced the AMT with a disordered structure on the fiber surface and improved the compatibility between CFs and SR. Mechanical testing showed that the tensile strength and elongation rate of the coating containing CF modified with 1wt%AMT coupling agent was increased by 45.32 % and 19.07 % compared with that of the unmodified one, respectively. The reinforcing mechanism revealed that the AMT modification improved interfacial bonding and mechanical riveting. Besides, the ther-mogravimetric analysis (TGA) analysis showed that the siloxane layer crosslinked at a high temperature, which was conducive to improving the thermal resistance for the long-term stability of the composite coatings. This special treatment provides an idea for simultaneously improving the mechanical properties and thermal resis-tance of silicone composites.

引用

页数：14