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Please use this identifier to cite or link to this item: http://purl.org/purl/3288

Title: Curing studies of elastomer blends with special reference to NR/ NBR and NR/BR blends
Authors: Rani, Joseph
Dr.Joseph,Francis D
Keywords: Elastomer blends
Butadiene rubber blends
Electron microscopy
Natural rubber
Issue Date: Dec-1987
Publisher: Cochin University of Science and Technology
Abstract: There are a large number of commercial examples and property advantages of immiscible elastomer blends.73 Blends of natural rubber (NR) and polybutadiene (BR) have shown various advantages including heat stability, improved elasticity and abrasion resistance. Ethylene-propylene-diene-rubber (EPDM) blended with styrene-butadiene rubber (SBR) has shown improvements in ozone and chemical resistance with better compression set properties. Blends of EPDM and nitrile rubber (NBR) have been cited as a compromise for obtaining moderate oil and ozone resistance with improved low temperature properties. Neoprene (CR)/BR blends offer improved low temperature properties and abrasion resistance with better processing characteristics etc. However, in many of the commercial two-phase elastomer blends, segregation of the crosslinking agents, carbon black or antioxidants preferentially into one phase can result in failure to attain optimum properties. Soluble and insoluble compounding ingredients are found to be preferentially concentrated in one phase. The balance of optimum curing of both phases therefore presents a difficult problem. It has been the aim of this study to improve the performance of commercially important elastomer blends such as natural rubber (NR)/styrene-butadiene rubber (SBR) and natural rubber/polybutadiene rubber (BR) by industrially viable procedures
Description: Department Of Polymer Science And Rubber technology
URI: http://dyuthi.cusat.ac.in/purl/3288
Appears in Collections:Faculty of Technology

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