Properties of silica/natural rubber composite film and foam: Effects of silica content and sulfur vulcanization system

This research paper investigated the effects of the silica content and the sulfur vulcanization system on the mechanical properties of silica-filled natural rubber (NR) composite film and foam to be used in various applications. Three different sulfur vulcanization systems (conventional (CV), semi-e...

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Bibliographic Details
Published inJournal of polymer research Vol. 29; no. 7
Main Authors Kumkrong, Napaporn, Dittanet, Peerapan, Saeoui, Pongdhorn, Loykulnant, Surapich, Prapainainar, Paweena
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.07.2022
Springer
Springer Nature B.V
Subjects
Analysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Crosslinked polymers
Crosslinking
Industrial Chemistry/Chemical Engineering
Mechanical properties
Natural rubber
Original Paper
Polymer Sciences
Rubber
Scientific papers
Silane
Silica
Silicon dioxide
Sulfur
Sulfur compounds
Technology application
Vulcanization
Natural rubber composite
Sulfur vulcanization
Natural rubber foam
Natural rubber sheet
Silica
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Summary:This research paper investigated the effects of the silica content and the sulfur vulcanization system on the mechanical properties of silica-filled natural rubber (NR) composite film and foam to be used in various applications. Three different sulfur vulcanization systems (conventional (CV), semi-efficient (Semi-EV), and efficient (EV)) were thoroughly studied to improve the quality of vulcanized NR and their composite with silica. The ground silica was treated with Silane 69. Scanning Electron Microscope demonstrated that the treated silica in NR was well dispersed. In addition, the treated silica resulted in better mechanical properties than for untreated silica. The optimum amount of silica in non-vulcanized rubber was 16 phr. Furthermore, the mechanical properties of vulcanized rubber from the CV system were better than those from the Semi-EV and EV systems due to the higher degree of crosslinking in the former. In addition, when the TSi/NR composite foam specimens at 8 phr had an applied load that was 4.41 times that of non-silica rubber foam.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-022-03129-9