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 .

A Study of Mechanical, Oil Resistance, and Low Temperature Resistance of NBR Vulcanizates

2016 ◽  
Vol 703 ◽  
pp. 165-171 ◽  
Author(s):  
Kwan Ho Seo ◽  
Gi Myeong Nam ◽  
Dong Gug Kang ◽  
Gi Hong Kim ◽  
Do Young Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Testing Machine ◽  
Butadiene Rubber ◽  
Scanning Calorimetry ◽  
Temperature Resistance ◽  
Oil Resistance ◽  
Universal Testing ◽  
Optimum Formulation ◽  
Low Temperature Resistance

In this study, mechanical properties, oil resistance of Nitrile Butadiene Rubber (NBR) as material of an automotive were investigated at low temperature conditions. In order to find the optimum formulation used various grades of NBR with different contents of Acrylonitrile (ACN) such as NT1846F, DN407, B7150, B6240 and N215SL. The mechanical properties, oil and low temperature resistance of NBR were measured using moving die rheometer, durometer, universal testing machine, differential scanning calorimetry, and Gehman tester. The hardness was increased with an increased ACN contents. The low temperature resistance, and degree of swelling were increased that decreased ACN contents have lower Tg, lower value of Gehaman test.

PREPARATION OF LOW TEMPERATURE RESISTANT AND HIGH ELECTRICAL INSULATION CHLOROPRENE RUBBER–BUTADIENE RUBBER BLENDS

2014 ◽  
Vol 87 (2) ◽  
pp. 360-369 ◽  
Author(s):  
Junping Zheng ◽  
Jin Tan ◽  
Hong Gao ◽  
Chuanzeng Wang ◽  
Zhilei Dong
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Mechanical Analysis ◽  
Electrical Insulation ◽  
Butadiene Rubber ◽  
Temperature Resistance ◽  
Rubber Blends ◽  
Chloroprene Rubber ◽  
Low Temperature Resistance ◽  
Electrical Insulation Properties

ABSTRACT To satisfy some special demands of many applications in the fields of aerospace and the electronic industry, low temperature resistant and high electrical insulation chloroprene rubber (CR) was prepared by blending pristine CR with different weight ratios of butadiene rubber (BR). The low temperature resistance, electrical insulation properties, and mechanical properties of CR/BR blends were investigated. With increasing BR content, the low temperature resistance and electrical insulation properties were improved, whereas the tensile strength and elongation at break decreased. For the CR/BR (65/35) blend, filled with SiO2, the brittleness temperature (Tb) was reduced to −61 °C and the high electrical insulation properties were obtained without sacrificing mechanical properties too much. The tan δ plots of CR/BR blends, investigated by dynamic mechanical analysis, also revealed that BR could reduce glass transition temperature (Tg) and improve low temperature resistance of CR. The phase contrast microscope images of CR/BR blends demonstrated that the phase structure of the blends changed with increasing BR content. Furthermore, the fracture surfaces of CR/BR blends, observed by scanning electron microscopy, showed that the compatibility of CR/BR blends was poor although the CR/BR blends were homogeneous in macrostructure.

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

Study on Application of the Blends of Nitrile Rubber with Acrylate Rubber in the Coat-Metal Sealing Gasket

2011 ◽  
Vol 393-395 ◽  
pp. 1438-1442 ◽  
Author(s):  
Zu Min Qiu ◽  
Chao Yan Qin ◽  
Jun Ming Qiu
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Heat Resistance ◽  
Nitrile Rubber ◽  
Temperature Resistance ◽  
Oil Resistance ◽  
Comprehensive Properties ◽  
The Cost ◽  
Low Temperature Resistance

This paper discussed the effect of different blending ratio with BNR and ACM on the mechanical properties, heat resistance, low temperature resistance and oil resistance of coat-metal sealing gasket. The result showed that the comprehensive properties of the NBR/ACM blends at the ratio of 85/15 were preferable to the NBR and ACM, the low temperature resistance and oil resistance of NBR are taken into account. The cost of the blends were lower than the ACM. The blends can be used for coat-metal sealing gasket instead of NBR.

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.

Highly Tough, Freezing-Tolerant, Healable and Thermoplastic Starch/Poly(vinyl alcohol) Organohydrogels for Flexible Electronic Devices

2021 ◽  
Author(s):  
Jing Lu ◽  
Jianfeng Gu ◽  
Oudong Hu ◽  
Yunhan Fu ◽  
Dezhan Ye ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electronic Devices ◽  
Future Generation ◽  
Thermoplastic Starch ◽  
Poly Vinyl Alcohol ◽  
Temperature Resistance ◽  
Large Application ◽  
Conductive Hydrogels ◽  
Low Temperature Resistance ◽  
Application Prospects

The conductive hydrogels have found large application prospects in fabricating flexible multifunctional electronic devices for future-generation wearable human-machine interactions. However, the inferior mechanical strength, low temperature resistance, and non-recyclability induced...

Photosynthesis and antioxidant metabolism modulate the low-temperature resistance of seed germination in maize

2021 ◽  
Author(s):  
Aiju Meng ◽  
Daxing Wen ◽  
Chunqing Zhang
Keyword(s):  
Seed Germination ◽  
Low Temperature ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Low Temperature Stress ◽  
Maize Seed ◽  
Down Regulation ◽  
Antioxidant Metabolism ◽  
Temperature Resistance ◽  
Low Temperature Resistance

Spring maize is usually subjected to low-temperature stress during seed germination, which retards seedling growth even if under a suitable temperature. However, the mechanism underlying maize seed germination under low-temperature stress modulating seedling growth after being transferred to normal temperature is still ambiguous. In this study, we used two maize inbred lines with different low-temperature resistance (SM and RM) to investigate the mechanism. The results showed that the SM line had higher lipid peroxidation and lower total antioxidant capacity and germination percentage than the RM line under low-temperature stress, which indicated that the SM line was more vulnerable to low-temperature stress. Further transcriptome analysis revealed that seed germination under low-temperature stress caused down-regulation of photosynthesis related gene ontology (GO) terms in two lines. Moreover, the SM line displayed down-regulation of ribosome and superoxide dismutase (SOD) related genes, whereas genes involved in SOD and vitamin B6 were up-regulated in the RM line. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that photosynthesis and antioxidant metabolism related pathways played important roles in seed germination in response to low-temperature stress, and the photosynthetic system displayed a higher damage degree in the SM line. Both qRT-PCR and physiological characteristics experiments showed similar results with transcriptome data. Taken together, we propose a model for maize seed germination in response to low-temperature stress.

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