Abstract

Polyester type polyurethane foam has low hydrolysis resistance. It was overcome with addition of acrylic polyol by quasi prepolymer method. Tensile strength and hardness of polyurethane foam contained acrylic polyol was increased with increasing of acrylic polyol contents. But split tear strength and tear strength was slightly changed. Hydrolysis resistance of polyurethane foam was measured by loss % of tensile strength. It was improved with increasing of acrylic polyol contents from 25.5g to 102g.

Keywords

• polyurethane foam;
• hydrolysis resistance;
• acrylic polyol;
• prepolymer;
• tear strength

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Acknowledgement

Supported by : 부경대학교

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