The invention relates to a room-temperature curing
polyurethane material as well as a preparation method and application thereof, belongs to the technical field of
high polymer materials and solves the problem of how to provide a
polyurethane material which is green and
environmentally friendly, capable of being cured at a
room temperature, good in fluidity, long in service life, high in strength,resistant to
humidity and heat, simple in operation process, adjustable and controllable in
curing time and strong in bonding performance with metals. The preparation method provided by the inventioncomprises the following steps: firstly mixing pre-dehydrated
polyol with
isocyanate and reacting to obtain a NCO-terminated
polyurethane pre-
polymer, namely a component A; then blending
polyol and asmall-molecule chain
extender, dehydrating, adding a catalyst and uniformly stirring to obtain a component B; finally weighing the component A and the component B according to a chain expansion coefficient of 0.95, sealing and sub-packaging to obtain the polyurethane material. The material is green and
environmentally friendly, long in storage life, easy to uniformly mix, good in fluidity, good bonding performance with the metals, capable of being cured at a
room temperature, flexible, adjustable and controllable in
curing time, high in strength after curing, good in
humidity and
heat resistance and suitable for
metal pipe pouring molding.