Double-component polyester polystyrene foam with inflaming retarding property and preparation method thereof
A two-component polyurethane and foamed adhesive technology, applied in the field of construction adhesives, can solve the problems of poor safety performance, low adhesion, flammability, etc., and achieve high construction efficiency, improved flame retardancy, high shear the effect of strength
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[0035] The two-component polyurethane foam with flame-retardant properties according to the present invention and its preparation method will be further described below in conjunction with specific examples. The specific composition is listed in Table 1. It is necessary to point out that this embodiment is only for illustration, and the scope of protection of the present invention is not limited to the scope of illustration.
[0036] The specific preparation process of the embodiment is as follows.
[0037] Part A: First add polyether polyol, foam leveling agent, thixotropic agent, and flame retardant into a four-necked bottle, mix well, heat to 120ºC, stir for 30min, then cool to below 80ºC, add catalyst and blowing agent And water, mix well and use it with component B.
[0038] Part B: Dehydrate the polyol until the water content is less than 0.5%, add PAPI under the protection of nitrogen, slowly raise the temperature to 80ºC (5ºC / min), stir and keep it for 3h, and then it can be...
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