Publication:
Fly ash particles and precipitated silica as fillers in NR/CR vulcanizates under thermal and thermal-oil ageing

dc.contributor.authorNapalai Kongvasanaen_US
dc.contributor.authorApisit Kositchaiyongen_US
dc.contributor.authorEkachai Wimolmalaen_US
dc.contributor.authorChakrit Sirisinhaen_US
dc.contributor.authorNarongrit Sombatsompopen_US
dc.contributor.otherKing Mongkuts University of Technology Thonburien_US
dc.contributor.otherMahidol Universityen_US
dc.date.accessioned2018-05-03T08:18:57Z
dc.date.available2018-05-03T08:18:57Z
dc.date.issued2011-06-01en_US
dc.description.abstractThe loading effect of precipitated silica (PSi) and fly ash-based silica (FASi) on mechanical properties of natural rubber/chloroprene (NR/CR) under thermal and thermal-oil ageing was investigated with variation in NR content in the NR/CR blends. The selected results were compared with vulcanized NR/nitrile rubber (NR/NBR) blends. The cure time of CR vulcanizate was found to decrease with increasing NR content, but increased with silica fillers. The Mooney viscosity for CR vulcanizates reduced with increasing NR content. The addition of NR had no effect on tensile modulus and tensile strength for the FASi filled NR/CR, but the opposite trend was observed for the PSi filled NR/CR. The post-curing effect was more significant in PSi filled NR/CR than in FASi filled NR/CR. The tensile strength of the NR/CR vulcanizates was slightly reduced after thermal ageing especially at high NR content, more extreme reduction being found by thermal-oil ageing. The elongation at break of NR/CR with both silica fillers ranged from 400 to 900%. The hardness results were similar to the tensile modulus. The addition of PSi in NR/CR considerably increased the tear strength, but less pronounced effect was found for FASi. The resilience properties of NR/CR tended to decrease with increasing silica content. The compression set became poorer when NR content was increased. The PSi showed higher improvement in compression set than the FASi. The effects of silica and ageing on the mechanical properties for NR/CR vulcanizates were similar to those for NR/NBR vulcanizates. © 2009 John Wiley & Sons, Ltd.en_US
dc.identifier.citationPolymers for Advanced Technologies. Vol.22, No.6 (2011), 1014-1023en_US
dc.identifier.doi10.1002/pat.1610en_US
dc.identifier.issn10991581en_US
dc.identifier.issn10427147en_US
dc.identifier.other2-s2.0-79955961734en_US
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/123456789/12115
dc.rightsMahidol Universityen_US
dc.rights.holderSCOPUSen_US
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79955961734&origin=inwarden_US
dc.subjectMaterials Scienceen_US
dc.titleFly ash particles and precipitated silica as fillers in NR/CR vulcanizates under thermal and thermal-oil ageingen_US
dc.typeArticleen_US
dspace.entity.typePublication
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79955961734&origin=inwarden_US
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