초저온용 Modified Polyurethane 접착소재 개발
Development of modified polyurethane Cryogenic adhesives
초저온용 Modified Polyurethane 접착소재개발;
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Adhesives are widely known for their consumer applications. In the aerospace industry, defense industry and semiconductor industry, an adhesive that is capable of hardening at room temperature and maintaining superior adhesive strength at cryogenic temparatrues, such as -186℃ or lower, is desirable. Common type or high-temperature resistant type adhesives generally suffer a rapid deterioration of adhesive strength and embrittlement at low temperatures due to the development of internal stress. Most conventional low modulus adhesives, such as polysulfieds, flexible epoxies, silicones, polyurethanes, and toughened acrylics are flexible enough for use at intermediate low temperatures.