HIGH HEAT AND CHLORINE RESISTANT POLYURETHANEUREA ELASTIC FIBER AND PREPARATION OF THEREOF

摘要

PURPOSE: Polyurethaneurea elastic fiber and a manufacturing method thereof are provided to improve anti-chlorine property, an elastic recovery rate, a strength maintenance rate and heat resistance by using basic magnesium carbonate as an anti-chlorine additive. CONSTITUTION: A manufacturing method of polyurethaneurea elastic fiber includes the following steps: manufacturing a polyurethanes first polymer by mixing polyhydric alcohol and isocyanate compounds under absence of monoalcohol; manufacturing a second polymer by adding a chain extender, a chain stopper and a cross-linking agent in the first polymer; manufacturing spinning dope by mixing surface reforming basic magnesium carbonate as an anti-chlorine additive in the second polymer; and manufacturing elastic fiber by spinning the spinning dope.