PU (polyurethane) latex flexible foam for bed mattress and preparation method of PU latex flexible foam
A flexible foam and polyurethane technology, applied in the field of polyurethane materials, can solve problems such as a large number of smoke and toxic gases, life and public safety hazards, and achieve the effects of low VOC content, reduced surface tension, and increased compatibility
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Embodiment 1
[0035] The invention provides a polyurethane latex flexible foam for mattresses, which is prepared from the following raw materials in parts by weight:
[0036] 70 parts of glycerol-propylene oxide-ethylene oxide copolymer;
[0037] 15 parts of polymer polyether polyol;
[0038] 2.1 parts of deionized water;
[0039] 0.2 parts of simethicone oil;
[0040] 0.7 parts of neopentyl glycol;
[0041] 0.3 parts of carbonamide;
[0042] 32 parts of diphenylmethane diisocyanate.
[0043] A method for preparing the polyurethane latex flexible foam for above-mentioned mattresses, the method may further comprise the steps:
[0044] (1) After mixing 26.8kg of glycerin and 268g of trimethylamine evenly, put them into a stainless steel reaction kettle, vacuumize and fill the kettle with nitrogen for three consecutive times to remove the air in the kettle, then add 25.35kg of propylene oxide into the kettle, and turn on the mechanical stirring , and gradually raised the temperature to 1...
Embodiment 2
[0048] The invention provides a polyurethane latex flexible foam for mattresses, which is prepared from the following raw materials in parts by weight:
[0049] 80 parts of glycerol-propylene oxide-ethylene oxide copolymer;
[0050] 25 parts of polymer polyether polyol;
[0051] 3.5 parts of deionized water;
[0052] 0.3 part of simethicone oil;
[0053] 1.2 parts of neopentyl glycol;
[0054] Carbonamide 0.4 part;
[0055] 38 parts of diphenylmethane diisocyanate.
[0056] A method for preparing the polyurethane latex flexible foam for above-mentioned mattresses, the method may further comprise the steps:
[0057] (1) After mixing 26.8kg of glycerin and 345g of trimethylamine evenly, put them into a stainless steel reaction kettle, vacuumize and fill the kettle with nitrogen for three consecutive times to remove the air in the kettle, then add 28.88kg of propylene oxide into the kettle, and turn on the mechanical stirring , and gradually raised the temperature to 105°C ...
Embodiment 3
[0061] The invention provides a polyurethane latex flexible foam for mattresses, which is prepared from the following raw materials in parts by weight:
[0062] 85 parts of glycerol-propylene oxide-ethylene oxide copolymer;
[0063] 30 parts of polymer polyether polyol;
[0064] 4.5 parts of deionized water;
[0065] 0.6 part of simethicone oil;
[0066] 2.5 parts of neopentyl glycol;
[0067] Carbonamide 0.5 part;
[0068] 45 parts of diphenylmethane diisocyanate.
[0069] A method for preparing the polyurethane latex flexible foam for above-mentioned mattresses, the method may further comprise the steps:
[0070] (1) After mixing 26.8kg of glycerin and 536g of trimethylamine evenly, put them into a stainless steel reaction kettle, vacuumize and fill the kettle with nitrogen for three consecutive times to remove the air in the kettle, then add 33.80kg of propylene oxide into the kettle, and turn on the mechanical stirring , and gradually raised the temperature to 110°C ...
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