文献类型：期刊文献

英文题名：Preparation and properties of hybrid epoxy/hydro-terminated polybutadiene/modified MMT nanocomposites

作者：Yi, Hongling[1];Wei, Ting[1];Lin, Heng[1];Zhou, Junjie[1]

机构：[1]East China Univ Sci & Technol, Res & Dev Ctr Sports Mat, Shanghai 200237, Peoples R China

年份：2018

卷号：15

期号：6

起止页码：1413

外文期刊名：JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH

收录：;EI(收录号：20183205677467);WOS:【SCI-EXPANDED(收录号:WOS:000449402600019)】；

基金：The research was financially supported by the National Natural Science Foundation of China (Grant No. 21506064) and China Postdoctoral Science Foundation (Grant No. 2017M611477).

语种：英文

外文关键词：Exfoliated MMT; Hydroxyl-terminated polybutadiene; Hybrid nanostructure; Epoxy resin; Properties

摘要：The effects of hydroxyl-terminated polybutadiene (HTPB) number average molecular weight (Mn) and preparation temperature on montmorillonite (MMT) intercalation/exfoliation behavior were investigated. X-ray diffraction and Fourier transform infrared spectroscopy results indicated that 40 to 80 C were the preferred temperatures to obtain nanostructured HTPB/MMT. The higher Mn (> 2800) of HTPB led to a more exfoliated nanostructure than lower Mn as proven by transmission electron microscopy. The tensile strength, tensile modulus, and elongation at break of nanostructured HTPB/MMT/EP ternary composites were higher than those of the HTPB/EP binary blend, which was due to the HTPB/MMT hybrid structure. The effect of increasing molecular weight on impact strength in the ternary system was less than that in the binary system. The HTPB/MMT/epoxy hybrid composites with low concentration could improve the impact strength, which was due to the superposition effect of organic/inorganic nanostructures. In hybrid HTPB/MMT/epoxy composite system, the toughening was attributed to the slow crack growth and fast crack growth, and the dissipated energy of pulling or debonding nanoclay out from the matrix also contributed.