Influence of 1,2-polybutadiene on properties of dicumyl peroxide cured brominated butyl rubber

2015 ◽  
Vol 133 (15) ◽  
pp. n/a-n/a ◽  
Author(s):  
Xia Yuan ◽  
Jinyuan Wang ◽  
Chunwei Wang ◽  
Steven Gao ◽  
Sharon Guo ◽  
...  
Keyword(s):  
Butyl Rubber ◽  
Dicumyl Peroxide ◽  
Brominated Butyl Rubber

scholarly journals Improved electromechanical properties of brominated butyl rubber filled with modified barium titanate

RSC Advances ◽  
2017 ◽  
Vol 7 (59) ◽  
pp. 37148-37157 ◽  
Author(s):  
Mengnan Ruan ◽  
Dan Yang ◽  
Wenli Guo ◽  
Shuo Huang ◽  
Yibo Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dielectric Constant ◽  
Barium Titanate ◽  
High Dielectric Constant ◽  
Dielectric Elastomer ◽  
Butyl Rubber ◽  
Electromechanical Properties ◽  
Brominated Butyl Rubber ◽  
High Dielectric

Barium titanate (BT) particles, BT-KH570 particles, and polar plasticizer tri-n-butyl phosphate (TBP) were added into BIIR matrix to form a dielectric elastomer composite, which had a high dielectric constant, good mechanical properties, and large actuated strain.

scholarly journals Determination of Antioxidant 264 in the Butyl Rubber Stopper and the Compatibility with Recombinant Potent Antitumor and Antivirus Protein Injection

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Min Zhao ◽  
Xianhui Li ◽  
Di Zhang ◽  
Longshan Zhao
Keyword(s):  
High Performance ◽  
Butyl Rubber ◽  
Rubber Stopper ◽  
Extraction Solvent ◽  
Migration Study ◽  
Butyl Rubber Stopper ◽  
Brominated Butyl Rubber ◽  
And Migration

Objective. To establish a method for extraction and determination of antioxidant 264 (2,6-di-tert-butyl-4-methylphenol) in the brominated butyl rubber stopper for injection and migration study in recombinant potent antitumor and antivirus protein injection (Novaferon). Methods. Dichloromethane-ethanol was adopted as the extraction solvent during the process of reflux extraction of antioxidant 264 in the brominated butyl rubber stopper. High-performance liquid chromatography (HPLC) was used for the determination of the migration of antioxidant 264 to Novaferon. The mobile phase consisted of acetonitrile-water (80 : 20, v/v). The flow rate was 1.5 mL/min. The detection wavelength was 280 nm. Results. The linearity range was from 4.003 to 200.150 μg/mL (r2 = 0.99996), and the average recovery of antioxidant 264 was 97.8%. The applicability of the methodology was good, which can be used for the determination of antioxidant 264. The results indicated that antioxidant 264 was not detected in Novaferon after the accelerated test and three months of long-term test. Conclusion. The established validated method in this study can be used for the determination of antioxidant 264 in the rubber stopper, and the brominated butyl rubber stopper has good compatibility with Novaferon.

scholarly journals Correction: Improved electromechanical properties of brominated butyl rubber filled with modified barium titanate

RSC Advances ◽  
2017 ◽  
Vol 7 (88) ◽  
pp. 55966-55966
Author(s):  
Mengnan Ruan ◽  
Dan Yang ◽  
Wenli Guo ◽  
Shuo Huang ◽  
Yibo Wu ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Butyl Rubber ◽  
Electromechanical Properties ◽  
Brominated Butyl Rubber

Correction for ‘Improved electromechanical properties of brominated butyl rubber filled with modified barium titanate’ by Mengnan Ruan et al., RSC Adv., 2017, 7, 37148–37157.

scholarly journals Thermal Decomposition of Brominated Butyl Rubber

2021 ◽  
Author(s):  
Wei Zhang ◽  
Jinping Xiong ◽  
Yang Zang ◽  
Yanli Lu ◽  
Weisheng Lin ◽  
...  
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Isoconversional Method ◽  
Butyl Rubber ◽  
Heating Rates ◽  
Excellent Thermal Stability ◽  
Small Peak ◽  
Air Atmosphere ◽  
Brominated Butyl Rubber ◽  
Derivative Thermogravimetry

The thermal decomposition of brominated butyl rubber under air atmosphere was investigated by thermogravimetry (TG) and derivative thermogravimetry (DTG) at various heating rates. The kinetic parameters were evaluated by TG and the isoconversional method developed by Ozawa. One prominent decomposition stage was observed in the DTG curves at high heating rates while an additional small peak was observed at low heating rates. The apparent activation energy determined using the TG method ranged from 219.31–228.13 kJ·mol-1 at various heating rates. The non-isothermal degradation was found to be a first order reaction, and the activation energy, as determined by the isoconversional method, increased with an increase in mass loss. The kinetic data suggested that brominated butyl rubber had excellent thermal stability. This study will indirectly aid in improving rubber pyrolysis methods and in enhancing the heat resistance of materials.

Study on calcium fluoride modified graphene/brominated butyl rubber nanocomposites

2017 ◽  
Vol 74 (12) ◽  
pp. 4959-4972 ◽  
Author(s):  
Xinya Yang ◽  
Yong Zhang ◽  
Yan Xu ◽  
Steven Gao ◽  
Sharon Guo
Keyword(s):  
Calcium Fluoride ◽  
Butyl Rubber ◽  
Rubber Nanocomposites ◽  
Brominated Butyl Rubber ◽  
Modified Graphene

INSIGHTS INTO THE CURE CHEMISTRY OF BROMINATED BUTYL RUBBER

2019 ◽  
Vol 92 (2) ◽  
pp. 350-363
Author(s):  
J. Scott Parent ◽  
Michael A. J. Faba ◽  
Sagar J. Tipnis ◽  
Ralph A. Whitney ◽  
Kevin Kulbaba
Keyword(s):  
Model Compound ◽  
Substantial Effect ◽  
Butyl Rubber ◽  
Mass Spectrometry Analysis ◽  
Reaction Pathways ◽  
Spectrometry Analysis ◽  
Allyl Cation ◽  
Highly Sensitive ◽  
1H Nuclear Magnetic Resonance ◽  
Brominated Butyl Rubber

ABSTRACT The importance of dehydrobromination to the cure chemistry of brominated butyl rubber (BIIR) is demonstrated through a combination of cure rheometry studies and model compound experiments. These data show that, while HBr elimination to give an exomethylene conjugated diene is inevitable, subsequent reactivity is highly sensitive to acidity within the mixture. As a result, formulations containing acid scavengers such as epoxides or MgO produce cure dynamics and yields that differ markedly from those of unstabilized analogues. These differences in allyl cation reaction pathways underlie much of the known behavior of BIIR + ZnO compounds and have a substantial effect on the progress of sulfur-based cure formulations. In this report, allyl cation fragmentation and electrophilic addition mechanisms are developed from 1H nuclear magnetic resonance (NMR) and mass spectrometry analysis of model compounds, and their implications for sulfur, ZnO, and sulfur + ZnO vulcanization chemistry are detailed.

Sign in / Sign up

Export Citation Format

Share Document