scholarly journals Branched EHNBR and its properties with enhanced low-temperature performance and oil resistance

RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32130-32136
Author(s):  
Lu Liang ◽  
Jianjun Dong ◽  
Dongmei Yue
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Low Temperature ◽  
Butadiene Rubber ◽  
Oil Resistance ◽  
Nitrile Butadiene Rubber ◽  
Temperature Performance ◽  
Low Temperature Performance

Epoxide nitrile butadiene rubber (ENBR) was prepared via in situ epoxidation from nitrile butadiene rubber (NBR) with acetic acid and hydrogen peroxide.

Oil resistance and low‐temperature characteristics of plasticized nitrile butadiene rubber compounds

2019 ◽  
Vol 136 (32) ◽  
pp. 47851 ◽  
Author(s):  
Do Young Kim ◽  
Gi Hong Kim ◽  
Gi Myeong Nam ◽  
Dong Gug Kang ◽  
Kwan Ho Seo
Keyword(s):  
Low Temperature ◽  
Butadiene Rubber ◽  
Temperature Characteristics ◽  
Oil Resistance ◽  
Nitrile Butadiene Rubber ◽  
Rubber Compounds

scholarly journals Modification Mechanism of Asphalt Modified with Rock Asphalt and Styrene-Butadiene Rubber (SBR)

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Xiangming Deng ◽  
Hui Huang ◽  
Bin Wang ◽  
Jie Chen
Keyword(s):  
Low Temperature ◽  
High Performance ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Low Temperature Performance ◽  
Styrene Butadiene ◽  
Compound Modification ◽  
Rheometer Test

High-performance asphalt binder plays an important role in the durable asphalt pavement. Asphalt modified by rock asphalt (RA) is one of the high-performance modified asphalt materials. It was used in road engineering as a relatively environmentally friendly material, because rock asphalt takes some advantages of large reserves, easy treatment, and efficient modification. Moreover, the main component of rock asphalt is bitumen, which enables it to substitute part of the binder used in asphalt mixtures. On the other hand, the negative low-temperature performance of RA modified asphalt impeded its application in cold regions. The object of this paper is to improve the low-temperature performance of RA modified asphalt by compound modified with styrene-butadiene rubber (SBR). The 70-penetration grade binder and the RA modified asphalt with 15% RA by weight were applied as the base binder. Five types of RA-SBR modified asphalt were prepared, and the content of SBR was 2%, 4%, 5%, 6% and 8% by weight of BRA modified binder. The Fourier transform infrared spectroscopy (FTIR) tests were utilized to illustrate the reasons for the poor low-temperature performance of BRA modified asphalt and reveal the compound modification mechanism of BRA-SBR modified asphalt. The Brookfield viscosity test, dynamic shear rheometer test, and bending beam rheometer test were adopted to reveal the variation patterns of rheological behavior and low-temperature performance with mass contents of SBR. The test results indicated that the worse of low-temperature performance was caused by the increase of asphaltene content and the stress concentration due to ash in RA modified asphalt. And the compound modification is a physical process. The addition of SBR has improved the low-temperature performance of RA modified asphalt dramatically. And based on the rheological behaviors and low-temperature performance of RA-SBR compound modified asphalt, the optimum content of SBR was determined, which is about 4%∼5%.

Preparation on Low-Temperature Resistance Nitrile-Butadiene Rubber Coat-Metal Sealing Gasket

2010 ◽  
Vol 152-153 ◽  
pp. 572-579
Author(s):  
Guan Li ◽  
Zu Min Qiu ◽  
Ai Bin Zhu ◽  
Zhong Wei Liu
Keyword(s):  
Low Temperature ◽  
Preparation Method ◽  
Technological Factor ◽  
Butadiene Rubber ◽  
Curing Agent ◽  
Temperature Resistance ◽  
Oil Resistance ◽  
Nitrile Butadiene Rubber ◽  
Reinforcing Agent ◽  
Low Temperature Resistance

The preparation method of low-temperature resistance nitrile-butadiene rubber coat-metal sealing gasket was introduced. The type and the dosage of curing agent, reinforcing agent and other additives were considered, the optimum technological factor was determined. Use of such nitrile-butadiene rubber coat-metal sealing gasket, its low temperature resistance and oil resistance were good enough for the seals which work at -40 -160 .

Improved understanding on the reinforcement of low-temperature hydrogenated nitrile butadiene rubber composites by in situ polymerization of unsaturated metal methacrylate: influences of salt cation

RSC Advances ◽  
2016 ◽  
Vol 6 (106) ◽  
pp. 104416-104424 ◽  
Author(s):  
Jihua Zhang ◽  
Hui Zhang ◽  
Jincheng Pang ◽  
Li Li ◽  
Shutao Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Chemical Structure ◽  
In Situ Polymerization ◽  
Butadiene Rubber ◽  
Rubber Composites ◽  
Nitrile Butadiene Rubber ◽  
Salt Cation

The morphology and chemical structure of poly(UMM) and the solubility of UMM induced by its cations have a remarkable impact on reinforcement of rubber matrices.

scholarly journals Improvement of Low-Temperature Performance of Buton Rock Asphalt Composite Modified Asphalt by Adding Styrene-Butadiene Rubber

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2358 ◽  
Author(s):  
Xiyan Fan ◽  
Weiwei Lu ◽  
Songtao Lv ◽  
Fangwei He
Keyword(s):  
Low Temperature ◽  
High Speed ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Stiffness Modulus ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Brittle Point ◽  
Low Temperature Performance ◽  
Styrene Butadiene

To improve the low-temperature performance of the Buton rock asphalt (BRA)-modified asphalt, styrene-butadiene rubber (SBR) was added to it. The BRA-modified asphalt and SBR-BRA composite modified asphalt were prepared by high-speed shearing method. The penetration, softening point, ductility, and Brookfield viscosity of the two kinds of asphalt were measured. The dynamic shear rheometer (DSR) and the beam bending rheometer (BBR) were employed to research the performance of BRA-modified asphalt by adding SBR. The results showed that the pure asphalt in BRA was the main reason to reduce the low-temperature performance of neat asphalt when the content of BRA was 19%. However, the ash in BRA was the main factor to reduce the low-temperature performance when its content was more than 39.8%. When the BRA content was 59.8%, the SBR-BRA composite modified asphalt with SBR contents of 2%, 4%, 6%, and 8%, and it shows that the penetration and ductility of the BRA-modified asphalt are increased by the addition of SBR. The equivalent brittle point was reduced, the stiffness modulus was decreased, and the creep rate was increased. At the same time, the Brookfield viscosity was reduced and the rutting factor was increased. The stiffness modulus of the SBR-BRA composite modified asphalt mixture was increased. That is to say, when SBR was mixed into the BRA-modified asphalt, the low-temperature performance could be remarkably improved based on ensuring high-temperature performance. The low-temperature index of composite modified asphalt was analyzed. It was recommended to apply the equivalent brittle point to evaluate the low-temperature performance of SBR-BRA composite modified asphalt.

Oxygen vacancy-enriched MoO3−x nanobelts for asymmetric supercapacitors with excellent room/low temperature performance

2019 ◽  
Vol 7 (21) ◽  
pp. 13205-13214 ◽  
Author(s):  
Qi-Long Wu ◽  
Shi-Xi Zhao ◽  
Le Yu ◽  
Xiao-Xiao Zheng ◽  
Yi-Feng Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxygen Vacancy ◽  
Electrochemical Performance ◽  
Asymmetric Supercapacitors ◽  
Temperature Performance ◽  
Excellent Electrochemical Performance ◽  
Low Temperature Performance

In situ synthesized oxygen vacancy-enriched MoO3−x nanobelts realized excellent electrochemical performance as asymmetric supercapacitors at room/low temperature.

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