A kind of environmentally friendly soft polyurethane foam and preparation method thereof
A polyurethane soft foam, environment-friendly technology, applied in the field of environment-friendly polyurethane soft foam and its preparation, can solve the problems that are not conducive to the stability of the country and enterprises, long-term development, environmental protection and energy saving, and achieve environmental friendliness, The effect of simplifying raw material processing steps and reducing oil dependence
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[0041] An environment-friendly flexible polyurethane foam, the formula of which is calculated in parts by weight: 80-90 parts of polyether polyol, 10-20 parts of castor oil, 4-5 parts of water, 0.20-0.30 parts of amine catalyst, organic 0.10-0.20 parts of tin catalyst, 0.5-0.2 parts of alkali metal catalyst, 1.5-0.5 parts of silicone oil 2370, 52-56 parts of isocyanate.
[0042] The prior art is conventional 25-density sponge formula A25, and the present invention is a novel green environmental-friendly sponge formula A25-Green, and its formula is shown in Table 1.
[0043] A preparation method of environment-friendly polyurethane soft foam, comprising the following steps:
[0044] (1) Preparation of raw materials: Prepare the raw materials according to the formula, wherein, component A is mixed with polyether polyol, castor oil, water, amine catalyst, organotin catalyst, alkali metal catalyst, and silicone oil 2370 according to the formula Together, stir for 30-50s to make i...
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