A method for curing a mixture of a matrix and a curing agent based on sulfur-containing polymers on command and so rapidly that a tack-free surface results. A method for coating a substrate with the composition and of curing a sealant is also provided. The matrix and curing agent containing sulfur-containing polymers. The mixture is an uncured mixture with an isocyanate content, and the matrix is uncured and contains a mercaptan-terminated base polymer based on at least one polyether, polythioether, polysulfide or copolymers thereof. The uncured matrix, the curing agent, or both contain at least one photoinitiator based on sterically-inhibited tertiary amines. The mixture cures in the temperature range of −10 to +70° C. after the high-energy actinic radiation is applied. Corresponding matrices A, mixtures B, curing agents, sealant systems, and substrates, e.g., aircraft are contemplated.
一种根据指令快速固化基质和含
硫聚合物固化剂混合物的方法,从而产生无粘性表面。此外,还提供了一种用该组合物涂覆基材和固化密封剂的方法。基质和固化剂含有含
硫聚合物。混合物是一种含有
异氰酸酯的未固化混合物,基质是未固化的,含有以至少一种聚醚、聚
硫醚、聚
硫化物或其共聚物为基础的
硫醇端基聚合物。未固化基质、固化剂或两者都含有至少一种基于立体抑制叔胺的光
引发剂。使用高能光辐射后,混合物在 -10 至 +70°C 的温度范围内固化。可考虑使用相应的基质 A、混合物 B、固化剂、密封剂系统和基材,例如飞机。