ポリスルフィドゴムの合成とその接着強度

概要

論文の詳細を見る
Studies on the preparation of the polysulfide rubber from dichloromethane, 1, 2-dichloroethane, β, β′ dichloroethylether, epichlorohydrin and sodium polysulfide were carried out; and the softening points, solubilities in various solvents, external appearances and shearing adhesive strengths of the above products to the aluminum test pieces were measured. In comparison between binary and ternary components systems, strong adhesive strength was observed in the non elastic products obtained from epichlorohydrin and sodium polysulfide in binary system, and also the polymers containing epichlorohydrin as a raw material were more adhesive than the others containing non epichlorohydrin in ternary system. And so, the presence of OH group in the products was necessary for high adhesion. When the mol ratio of epichlorohydrin and 1, 2-dichloroe thane was 1:1, stronger adhesion was obtained as compared with 2:1 and 1:2 in ternary system.As the result of oxidation of the above samples by hydrogen peroxide, the densities, elasticities and the adhesive strengths-when they are initially low adherent non-oxidized polymers-were improved.
日本ゴム協会の論文