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Citation: LI TSENG-KUEI, ZHOU YAO-FANG. STUDIES ON VULCANIZED LATEXPHYSICO-MECHANICAL PROPERTIES OF WET-GEL ANDDRY-FILM OF VULCANIZED NATURALRUBBER LATEX[J]. Acta Polymerica Sinica, ;1963, 5(3): 101-109. shu

STUDIES ON VULCANIZED LATEXPHYSICO-MECHANICAL PROPERTIES OF WET-GEL ANDDRY-FILM OF VULCANIZED NATURALRUBBER LATEX

Effects of vulcanizing temperature and time on the physico-mechanical properties of wet-gel and dry-film of vulcanized natural latex were studied．The physico-mechanical properties of wet-gel became worse when the temperature or the degree of vulcanization was increased．The properties of dry-film were improved by increasing the degree of vulcanization and became worse on increasing the vulcanizing temperature(while the combined sulphur is constant)．The differences in these properties between the wet-gel and dry-film were attributed to the difference in the mechanism of rupture，e.g.，inter-globule for wet-gel and intraglobule for dry-film．The effect of vulcanizing temperature was explained by the non-uniform distribution of the intraglobule sulphur-bond．in the latex．
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