Preparation method of waterborne release agent for polyurethane foam demolding
A polyurethane foam and release agent technology, applied in the field of release agent preparation, can solve the problems of poor release effect, affecting the surface quality of foam, and easy residue on the surface of the mold, so as to achieve the effect of easy falling off and improved release effect
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Embodiment 1
[0030] Preparation of self-made water-soluble functional substances:
[0031]Mix soybean oil and lipase at a mass ratio of 10:1, put them into an enzymolysis tank, and perform enzymolysis at 35°C for 6 hours to obtain an enzymolysis product. The enzymolysis product and methanol solution with a mass fraction of 70% After mixing at a ratio of 1:1, put it into the reaction kettle, heat up to 60°C, stir and react for 1 hour, and obtain the reactant;
[0032] The above reaction product was put into a hydrogenation reactor, and hydrogen was introduced into the reactor to replace the air. After the replacement was completed, the reactor was sealed and reacted for 4 hours at a pressure of 11 MPa and a temperature of 250° C. to obtain a reaction product;
[0033] Move the above reaction product into the reaction kettle, then add alumina with a reaction product mass of 0.5% in the reaction kettle, and feed an equal volume ratio mixture of nitrogen and ethylene oxide into the reaction ke...
Embodiment 2
[0040] Preparation of self-made water-soluble functional substances:
[0041] Mix soybean oil and lipase at a mass ratio of 10:1, put them into an enzymolysis tank, and perform enzymolysis at 40°C for 7 hours to obtain an enzymolysis product. After mixing at a ratio of 1:1, put it into the reaction kettle, heat up to 65°C, stir and react for 1.5h, and obtain the reactant;
[0042] Put the above reaction product into a hydrogenation reaction kettle, and pass hydrogen into the reaction kettle to replace the air. After the replacement is completed, seal the reaction kettle and react for 4.5 hours under the conditions of a pressure of 12MPa and a temperature of 260°C to obtain the reaction product ;
[0043] Move the above reaction product into the reaction kettle, then add alumina with a reaction product mass of 0.5% in the reaction kettle, and feed an equal volume ratio mixture of nitrogen and ethylene oxide into the reaction kettle until the pressure in the reaction kettle rea...
Embodiment 3
[0050] Preparation of self-made water-soluble functional substances:
[0051] Mix soybean oil and lipase at a mass ratio of 10:1, put them into an enzymolysis tank, and perform enzymolysis at 45°C for 8 hours to obtain an enzymolysis product. After mixing at a ratio of 1:1, put it into the reaction kettle, heat up to 70°C, stir and react for 2 hours, and obtain the reactant;
[0052] The above reaction product was put into a hydrogenation reactor, and hydrogen was introduced into the reactor to replace the air. After the replacement was completed, the reactor was sealed and reacted for 5 hours at a pressure of 13 MPa and a temperature of 270° C. to obtain a reaction product;
[0053] Move the above reaction product into the reaction kettle, then add alumina with a reaction product mass of 0.5% in the reaction kettle, and feed an equal volume ratio mixture of nitrogen and ethylene oxide into the reaction kettle until the pressure in the reaction kettle reaches 0.4MPa, heat up ...
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