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Studies on polymer blends: Blending methods for natural rubber and styrene‐butadiene rubber
Author(s) -
Shundo Minoru,
Imoto Minoru,
Minoura Yuji
Publication year - 1966
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1966.070100611
Subject(s) - natural rubber , materials science , vulcanization , styrene butadiene , composite material , polymer blend , polymer , styrene , polymer science , copolymer
Abstract The relations between the properties and the blend ratios of natural rubber (NR) and styrene‐butadiene rubber (SBR) blends were studied in comparison with four blending methods. The relations between the properties of unvulcanized and vulcanized blends and the blend ratios of blends prepared by means of solution blending, latex blending, roll blending, and Banbury mixer blending were studied. In practice, such rubber blending methods as roll blending are more effective for obtaining uniform blends than Banbury mixer blending the latter. In roll blending, it is more effective to blend NR and SBR by way of a master‐batch in which the ingredients are compounded beforehand than to blend raw rubber. In solution and latex blending, very uniform blends are easily obtained. It was found, however, that the properties of NR/SBR blends prepared carefully showed a direct relation to their blend ratios, regardless of blending method used.