Topic
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.
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TL;DR: In this paper, a modified asphalt binder using recycled plastics such as polyethylene terephthalate (PET) may improve its rheological characteristics while providing secondary environmental benefits.
27 citations
TL;DR: In this article, a series of short fibre reinforced styrene butadiene rubber (SBR) composites were prepared by incorporating sisal fibres of different lengths and different concentrations.
Abstract: A series of short fibre reinforced styrene butadiene rubber (SBR) composites were prepared by incorporating sisal fibres of different lengths and different concentrations. The vulcanization behaviour and the properties of the vulcanizates were measured by the relevant ASTM procedures. The processing characteristics such as green strength and mill shrinkage were improved by the addition of fibres. The properties like tensile strength, tear strength, moduli at 10% and 20% elongations were found to be maximum for composites containing longitudinally oriented fibres of length 6 mm. Mixes containing 35 phr loading of fibres and bonding agent showed better mechanical performance than others. The failure behaviour of tensile and tear specimens have been analysed by scanning electron microscopy techniques.
27 citations
Patent•
31 May 2001
TL;DR: A process for the production of a radiation protective material comprising a polymer of a thermoplastic, vulcanizable elastomer and more than 80 wt.% of a high atomic number metal or its compounds, comprises mixing of the high atomic weight metal powder (20-120 micro m particle size) with an inorganic additive and incorporation into the elastym at below 180 deg C as discussed by the authors.
Abstract: A process for the production of a radiation protective material comprising a polymer of a thermoplastic, vulcanizable elastomer and more than 80 wt.% of a radiation absorbing filler of a high atomic number metal or its compounds, comprises mixing of the high atomic weight metal powder (20-120 micro m particle size) with an inorganic additive and incorporation into the elastomer at below 180 deg C. A radiation protective material comprises a filled polymer of a synthetic, thermoplastic, vulcanizable elastomer such as natural rubber, polychloroprene, nitrile-butadiene, styrene butadiene, butadiene rubber, ethylene-propylene diene terpolymer, ethylene-propylene copolymer, polyurethane, isobutylene-isoprene rubber, silicon rubber and/or ethylene-vinyl acetate rubber or non-vulcanizable elastomers, preferably polypropylene/EPDM, styrene-ethylene-butylene-styrene, polyvinyl chloride-nitrile butadiene and/or ethylene-propylene copolymer and more than 80 wt.% of a radiation absorbing filler, with a powder of a high atomic number metal or its compound. Its production involves (A) mixing of the high atomic weight metal powder (20-120 mu m particle size) with magnesium-aluminum-silicate, zinc stearate, silicon resin powder, strontium carbonate, barium carbonate, barium sulfate,calcium-tungstate, gadolinium oxysulfide, tin oxide doped barium sulfate, zinc, antimony, lanthanides and/or actinides. (B) incorporating the mixed powder into the elastomer at below 180 deg C (C) cooling and further homogenization of the mixture using cooled rollers (D) cutting of the mixture into strips and passing through a screen (5-1000 (especially 15-35) micro m) (E) forming of the mixture into film by conventional processes, optionally after addition and vulcanization of necessary cross-linking agents.
27 citations
TL;DR: In this paper, a surface modification method of silica with rubber accelerator is proposed, which is relatively easy to realize and manipulate compared to other sophisticated methods, and the improved surface strength and tear strength of SBR/silica-s-CZ composites are shown.
27 citations
TL;DR: In this article, a significant difference was found in the uptake levels of α-pinene from the gas phase for the different polymers tested, based on partition coefficient measurements, relatively non-polar polymers such as Kraton® tend to uptake αpinene better than polar ones such as Hytrel®.
Abstract: BACKGROUND: An emerging innovation for the treatment of polluted air consists in using a liquid–solid biphasic system, in which the sequestering phase contains inert polymer beads. The different polymers tested here for this purpose were; Hytrel® G3548L, Hytrel® G4078W, styrene butadiene copolymer, 28% and 31%, silicone rubber, PEBAX® 2533, and rubber tires. The selection of the most effective polymer(s) first requires a determination of the uptake of the pollutants by the solid phase in terms of key polymer properties such as partition coefficient, diffusion coefficient and biodegradability.
RESULTS: A significant difference was found in the uptake levels of α-pinene from the gas phase for the different polymers tested. Based on partition coefficient measurements, relatively non-polar polymers such as Kraton® tend to uptake α-pinene better than polar ones, such as Hytrel®. A reduction in the partition coefficient of α-pinene into polymers in the presence of water has also been observed. It was also proven that the tested polymers are not biodegradable.
CONCLUSIONS: The uptake of α-pinene by the different polymers tested was determined and it was shown that such polymers could be used for air pollution control. Furthermore, their non-biodegradability justifies their use as absorbents. This paper provides a new opportunity to work with biofilters (BFs)/biotrickling filters (BTFs) using polymers as a sequestering phase. Copyright © 2010 Society of Chemical Industry
27 citations