Abstract
Abstract Dough moulding compound (DMC) reinforced polymerized styrene butadiene rubber (SBR) / methyl vinyl silicone rubber (MVQ) composites were prepared, in which MVQ was matrix, DMC was a reinforcement phase and SBR was a compatibilizer. Dynamic thermomechanical analysis (DMA), infrared spectrum analysis (IR) and the effect of SBR and DMC content on mechanical properties, electrical insulating property and compatibility of the composites were investigated. The results showd that the morphology and thermal properties of the composites were improved when dough moulding compound was used as a reinforcement, and styrene butadiene rubber was compatibilizer, and had excellent insulating property with volume resistivity above 4.8×1012 Ω·m.
Highlights
The various abilities and power in human production and life are provided by the energy sources
Polymerized styrene butadiene rubber (SBR) has many branched chains, as a result, the space between the molecular backbones was large, which makes the compatibility between MVQ and Dough moulding compound (DMC) is good; and SBR with MVQ and unsaturated polyester in the DMC are all organic compounds, according to the similar chemical materials dissolve mutually theory, the SBR was added to improve the compatibility of DMC and MVQ, and the influencing factors on the properties of the DMC / SBR / MVQ composites were investigated
It is interpreted as MVQ and SBR are both non-polar rubber, they can combine together well according to the chemical materials similar dissolve mutually theory; in addition, the relative molecular weight of MVQ was smaller than that of SBR, and the SBR has many branched chains, as a result, the space between the molecular backbones was large, which makes the compatibility between MVQ and SBR good; the addition of SBR improved the mechanical properties of the composites
Summary
The various abilities and power in human production and life are provided by the energy sources From this view, the energy is the important material foundation of national economy, and depends on its control in the future world [1]. A dough moulding compound (DMC), of which is a uniform mixture mainly made of glass fibers and unsaturated polyester with the excellent mechanical properties and electrical insulation properties [20], was adopted to reinforce methyl vinyl silicone rubber (MVQ) in this work. Polymerized styrene butadiene rubber (SBR) has many branched chains, as a result, the space between the molecular backbones was large, which makes the compatibility between MVQ and DMC is good; and SBR with MVQ and unsaturated polyester in the DMC are all organic compounds, according to the similar chemical materials dissolve mutually theory, the SBR was added to improve the compatibility of DMC and MVQ, and the influencing factors on the properties of the DMC / SBR / MVQ composites were investigated
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