橋かけ結合様式の異なる加硫ゴムの橋かけ密度

概要

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Various cured EPDM having different chemical structures of crosslinking point were prepared using various curing agents. The relationships between the crosslinking density of these cured EPDM by swelling method and the torque by oscillating disk rheometer were studied.<BR>From the results, it was found that : <BR>1. The value of torque and the sol percent were hardly infuenced by the chemical structure of crosslink-ing point, but only by the crosslinking density.<BR>2. The gel parts of EPDM increased very fast in early cure time, but they did not increase very much and only the crosslinking density of the gel part increased when the crosslinking percent reached a constant value.