Application of Environmentally Friendly Thermosensitive Delay Catalyst in the Casting Polyurethane Elastomers
A new environmentally friendly thermosensitive delay catalyst AUCAT-RM301 was evaluated by mixing carbonized diimide modified diphenylmethane diisocyanate(CDMDI-100L),polyoxypropylene glycol(PPG)and polyol crosslinking agent at room temperature and cured at different temperature.The thermosensitive delay performance of RM301 and its influence on the molding process and physical properties of polyurethane elastomers were compared with organic mercury and organic bismuth catalysts.The results showed that RM301 used as catalyst in the medium temperature(80℃)curing system had obvious thermosensitive delay.The system was insensitive to water,the gel time was long,the post molding was fast,had good operability and good product performance.A new way of research and development for the innovative application of polyurethane elastomer was developed.
polyurethane elastomerenvironmentally friendlyorganic mercurycatalystthermosensitive delay metal catalyst
万方数据
维普
