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Structure and properties of nylon 1010/ethylene‐vinyl acetate rubber–based dynamically vulcanized thermoplastic elastomers filled with SiO 2
Author(s) -
Lu Xianbo,
Zhang Hongmei,
Zhang Yong
Publication year - 2015
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23920
Subject(s) - materials science , vulcanization , differential scanning calorimetry , ultimate tensile strength , composite material , ethylene vinyl acetate , vinyl acetate , nylon 6 , nanocomposite , natural rubber , maleic anhydride , elastomer , thermoplastic elastomer , scanning electron microscope , compatibilization , polymer , copolymer , polymer blend , physics , thermodynamics
Dynamically vulcanized Nylon 1010/ethylene‐vinyl acetate rubber (EVM)/SiO 2 nanocomposites were prepared. Maleic anhydride grafted ethylene‐vinyl acetate copolymer (EVA ‐g ‐MA) and nano‐silica (SiO 2 ) was used as a compatibilizer and a filler, and silane coupling agent (KH550, 3‐triethoxysilylpropylamine) was used to improve the dispersion of SiO 2 in the nanocomposites. The nanocomposites were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), dynamic mechanical analysis (DMA), differential scanning calorimeter (DSC), and rheology analysis and mechanical properties test. SEM and AFM images showed that the compatibility between Nylon 1010 and EVM was improved by adding the compatibilizer. An increase in SiO 2 content and the addition of the compatibilizer led to an increase in the tensile strength of the nanocomposite. A nanocomposite based on Nylon 1010/EVM/DCP (30/70/0.8) with tensile strength of 16.3 MPa and elongation at break of 180% was obtained by the addition of 15 phr EVA ‐g ‐MA and 40 phr SiO 2 . The non‐isothermal crystallization processes of Nylon/EVM blend were investigated by DSC. It was observed that EVM rubber could act as heterogeneous nuclei for Nylon which was more effective in Nylon/EVM/DCP blend than in Nylon/EVM blend. POLYM. ENG. SCI., 55:581–588, 2015. © 2014 Society of Plastics Engineers