Polyester type polyurethane microporous sole material and preparation method thereof

The invention discloses a polyester type polyurethane microporous sole material and a preparation method thereof. The preparation of Component A comprises the following steps: mixing 60-80 weight parts of polyester polyol, 30-10 weight parts of polymer polyol, 7-10 weight parts of chain extender, 0.6-1.2 weight part(s)of catalyst and 0.5-1.0 weight part of foam stabilizer for 1 hour at the temperature of 75 DEG C plus or minus 3 DEG C, reducing the temperature to 42 DEG C plus or minus 3 DEG C, adding 0.4-0.5 weight part of water, and mixing for 1 hour; the preparation of Component B comprises the following steps: mixing 80-100 weight parts of MDI, 0-20 weight part(s) of liquefied MDI and 35-95 weight parts of polyester polyol for 2 hours at the temperature of 80 DEG C under the nitrogen protection; and the preparation of a polyurethane microporous elastomer comprises the following steps: maintaining the temperature of Component A at 50 DEG C plus or minus 2 DEG C, maintaining the temperature of Component B at 45 DEG C plus or minus 2 DEG C, adjusting the dosage of Component A and Component B so that the molar ratio of hydroxyl and NCO is 1:1, mixing the two components, injecting the mixed components into a mold for reaction and formation, stripping the mold, and curing, thereby obtaining the product.