Premium
Thermal and mechanical enhancement of styrene–butadiene rubber by filling with modified anthracite coal
Author(s) -
Tan Jinlong,
Cheng Hongzhi,
Wei Lubin,
Gui Xiahui
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48203
Subject(s) - anthracite , materials science , natural rubber , composite material , ultimate tensile strength , composite number , carbon black , styrene butadiene , filler (materials) , thermal stability , coal , graphite , microstructure , polymer , styrene , chemical engineering , chemistry , copolymer , organic chemistry , engineering
Anthracite is the highest rank of coal with a layered structure similar to that of graphite. Here, styrene–butadiene rubber/modified anthracite (MA) composites were prepared and analyzed. The microstructure and dispersion of the anthracite were improved by ball milling with the modifier bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide (KH‐Si69). The particle size of the modified coal was decreased significantly to ~3 μm, while surface interactions with the modifier yielded enhanced lamellar morphology and hydrophobic surfaces. The anthracite lamellae were well dispersed in the rubber matrix, providing good reinforcement; the tensile strength of the composite exceeded that of a composite with carbon black (CB) N660 filler (16.65 vs. 14.68 MPa). Moreover, low‐level CB or silica compositing further promoted the dispersion of coal particles in the rubber, effectively enhancing the mechanical reinforcement behavior of the coal particles as well as the thermal stability of the rubber composite. Notably, it led to a 10.63% improvement in tensile strength and a 9.96 °C increase in the 5% mass loss temperature compared to the composite with a single MA filler. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 48203.