Styrene-butadiene

About: Styrene-butadiene is a research topic. Over the lifetime, 5568 publications have been published within this topic receiving 62099 citations. The topic is also known as: styrene-butadiene rubber & SBR.

High-strength laminated fire-retarding conveyer belt coating rubber, and preparation method thereof

Abstract: The invention relates to high-strength laminated fire-retarding conveyer belt coating rubber and a preparation method thereof. The rubber has both high fire retardance and mechanical strength, and can be used as fire-retarding conveyer belt coating rubber. According to the method, substrate rubber is masticated in a double-roll open mill; stearic acid, an anti-aging agent, a fire retardant, metal oxide, a reinforcing agent, a vulcanization accelerator and a vulcanizing agent are added to the substrate sequentially; the mixture is uniformly mixed in the open mill, such that coating gum is obtained; the coating gum and a bonding layer are vulcanized on a molding vulcanization plate, such that a high-strength laminated fire-retarding conveyer belt coating rubber product is obtained. According to the invention, styrene butadiene rubber, natural rubber, cis-1,4-polybutadiene rubber or a mixture of the three is adopted as the substrate rubber. Compared to a traditional coating material, mechanical strength, flexibility and processing property of the coating rubber are improved, and cost is reduced.

Determination of the chemical composition of styrene‐butadiene copolymers by high performance liquid chromatography

Abstract: Le SBR prepare par voie radicalaire peut etre separe suivant sa teneur en unites monomeriques styrene par HPLC, a l'aide d'un gel d'acrylonitrile reticule comme phase stationnaire, avec le melange hexane-chloroforme

Kinetics of the phase selective localization of silica in rubber blends

Abstract: The Fourier transformed infrared (FTIR) spectroscopy on the rubber-filler gel has been used as a tool for the quantitative characterization of the phase selective silica localization in styrene butadiene rubber (SBR)/ natural rubber (NR) blends. The so-called rubber-layer L was introduced to describe the selective wetting behavior of the rubber phases to the filler. SBR/NR blends filled with silica were the focus of the experimental investigation. NR shows a higher wetting rate than SBR. Silane addition does not affect the wetting of NR but slowdowns the wetting of SBR. With increasing chamber temperature the value of the rubber-layer L of all mixtures increases owing to the different thermal activated rubber-filler bonding processes. Using the wetting concept the kinetics of silica localization in the phases of heterogeneous rubber blends was characterized. Because of the higher wetting rate of the NR component, in the first stage of mixing of NR/SBR blends more silica is found in the NR phase than in the SBR phase. In the next stage, silica is transferred from the NR phase to the SBR phase until the loosely bonded components of NR rubber-layer are fully replaced by SBR molecules. POLYM. COMPOS., 00:000– 000, 2010. a 2010 Society of Plastics Engineers