Effect of styrene butadiene rubber on the light pyrolysis of the natural rubber

Song, Peng; Wu, Xiaoyu; Wang, Shifeng

doi:10.1016/j.polymdegradstab.2017.12.006

Cited by 43 publications

(22 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our opinion, other promising approaches for further studies in field of microwave-induced thermal decomoposition of waste rubber can be devided into two directions: light pyrolysis and gasification. Light pyrolysis of waste rubber is relatively novel technology and comparing to conventional pyrolysis is performed in lower temperature (usually around 300°C or less) [90,91]. In this conditions primary pyrolysis occurs, which combine devolatilization of rubber additives (and other low molecular compounds) and partial thermal decomposition/degradation of waste rubber.…”

Section: Waste Rubber Pyrolysismentioning

confidence: 99%

Microwave treatment in waste rubber recycling – recent advances and limitations

Formela¹,

Hejna²,

Zedler³

et al. 2019

Express Polym. Lett.

View full text Add to dashboard Cite

Environmentally-friendly microwave heating is increasingly used in polymer chemistry and technology. The selectivity and highly efficiency in the heat transfer present a huge advantage in systems based on recycling, improving their productivity and economic competitiveness. In case of the industrial recycling of waste rubbers, especially end-of-life tires, microwave-induced devulcanization and pyrolysis are nowadays considered as promising approaches. This work aims to report the recent progress in microwave treatments of vulcanized rubbers with different compositions. Special attention is focused on the correlation between microwave processing parameters and devulcanization/pyrolysis efficiency, which have a significant impact on the structure-property relationships of the obtained products. Moreover, the main challenges affecting the future of the industrial application of the microwave technology in rubber recycling are also discussed.

show abstract

Section: Waste Rubber Pyrolysismentioning

confidence: 99%

Microwave treatment in waste rubber recycling – recent advances and limitations

Formela¹,

Hejna²,

Zedler³

et al. 2019

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…The pyrolysis process is influenced by these two effects, especially the cross-linked network. For example, the transfer of S-S cross-linked bond is of high research interest during the pyrolysis process due to the increasingly severe environmental pressure [44]. However, the effects of cross-linked bonds and entanglement are beyond the scope of this work.…”

Section: Pyrolysis Product Distributions Of Homopolymers Via Reaxff MDmentioning

confidence: 99%

“…And these A or B-based segments are alternately arranged. SBR applied in the tire rubber is crosslinked with sulfur and reinforced with carbon black [44], while the breakage of the crosslinked network of SBR not considered in this work. The initial density of these copolymer samples is set to 0.1 g/cm 3 , and then the ReaxFF MD simulations are performed at temperatures of 1500 ( Figure S2), 2000 ( Figure S3), 2500 ( Figure S4) and 3000 K ( Figure S5) with NVT ensemble.…”

Section: Pyrolysis Product Distributions Of Styrene-butadiene Rubber mentioning

confidence: 99%

Multiscale Simulation on Product Distribution from Pyrolysis of Styrene-Butadiene Rubber

et al. 2019

View full text Add to dashboard Cite

Pyrolysis of styrene-butadiene rubber receives renewed attention due to its application in tackling the waste tire disposal problem while allowing energy recovery. The density functional theory calculation (DFT) and ReaxFF molecular dynamics simulation (MD) are adopted to study the pyrolysis process with the variation of temperature and pressure. The bond dissociation energies of intramonomer and intermonomer bonds in trimers with different linking methods are calculated by DFT, where the bond with low energy tends to break during the pyrolysis process. The following MD simulation shows the pyrolysis product distribution of chain segments in styrene-butadiene rubber, where bond breaking positions in MD agree well with corresponding results in DFT and experiment. The next nearest neighbor bonds (single bonds) connected with double bond or benzene usually have lower dissociation energies than other single bonds and prone to break during the pyrolysis process. And thus, the intermonomer bonds tend to break at relatively low temperatures (around 650 K in experiment) prior to intramonomer bonds, which result in the emergence of monomers. With the temperature increase, intramonomer bonds are broken and thus large fragments are further pyrolyzed into small ones (e.g., C2 and C). Besides, the pressure strongly influences the product distribution, where high pressures promote the occurrence of secondary reactions.

show abstract

“…The TG-DTG technique is used in analysis of polymer materials 2,19 , and some reports are presented on identification of a series of rubber compounds that indicate the high precision and acceptable accuracy of this method 20 . Some researchers have suggested the use of decomposition temperature to identify elastomers in cured rubber compounds with thermal analysis techniques [20][21][22][23][24][25] .Some studies reported the effect of long and short-term aging time on the volcanized compounds 26 . In other studies, SBR based composites, in various conditions, was exposed to moisture and heat.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Mechanical and Functional Features of Aged Rubber Composites Based on BR/SBR; Structure-Properties Correlation

Motiee

Bigdeli

2019

Mat. Res.

View full text Add to dashboard Cite

V with their aging time (1 to 40 days) was demonstrated using DTG profile of uncured compounds. The correlation between these two thermal factors with aging time yielded a linear equation with an acceptable correlation coefficient (R2 ≥ 0.95). By the obtained linear model the aging time of rubber compounds based on BR / SBR was predicted. In the second step, the curing behavior and mechanical characteristics of tire tread formulation based on BR/SBR were forecasted using the aging time of compounds, without time-consuming and costly tests. In all cases, the accuracy and reproducibility of obtained data were evaluated.

show abstract

Effect of styrene butadiene rubber on the light pyrolysis of the natural rubber

Cited by 43 publications

References 32 publications

Microwave treatment in waste rubber recycling – recent advances and limitations

Microwave treatment in waste rubber recycling – recent advances and limitations

Multiscale Simulation on Product Distribution from Pyrolysis of Styrene-Butadiene Rubber

Prediction of Mechanical and Functional Features of Aged Rubber Composites Based on BR/SBR; Structure-Properties Correlation

Contact Info

Product

Resources

About