A kind of high resilience polyurethane foam and preparation method thereof
A technology of polyurethane foam and high resilience, applied in the field of polyurethane, can solve the problems of low hysteresis rate of mechanical properties, etc., and achieve the effect of low hysteresis rate, broad application market, and cost reduction
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[0027] In the present invention, the preparation method of the block poly(ether-carbonate) polyol preferably comprises:
[0028] Under the action of a catalyst and a chain transfer agent, the epoxy compound is polymerized to obtain a polymer product;
[0029] The polymerization product is continuously copolymerized with carbon dioxide and epoxy compounds to obtain block poly(ether-carbonate) polyols.
[0030] In the present invention, the catalyst for the preparation of block poly(ether-carbonate) polyols is preferably rare earth-doped Zn-based 3 [Co(CN) 6 〕 2 multimetal catalysts. In the present invention, the Zn-based 3 [Co(CN) 6 〕 2 The source of the polymetallic catalyst is not particularly limited, as can be prepared according to the method disclosed in CN102617844 Chinese patent, the rare earth doped based on Zn 3 [Co(CN) 6 〕 2 The preparation method of the polymetallic catalyst preferably comprises:
[0031] mixing tert-butanol, water, zinc salt compound and r...
Embodiment 1
[0065] Evacuate the weighing bottle at 80°C and fill it with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Under the protection of air, add 35.0mg of MMC catalyst and 15g of citric acid chain transfer agent into the weighing bottle to obtain the mixture; put the 500mL reaction kettle at 80°C and fill it with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reactor, then add 60g propylene oxide to the reactor through the communication of the catalyst weighing bottle, stir with the rotating speed of 500rpm, and react The kettle was placed in a constant temperature bath for polymerization reaction: the polymerization reaction temperature was 85°C, and the polymerization reaction time was 4h; after the end of the polymerization reaction, carbon dioxide was added, and the pressure was 2.0MPa, and 440g of propylene oxide was continuously added, maintained at 85°C, and the reaction was continued for 5h; After the...
Embodiment 2
[0068] Evacuate the weighing bottle at 80°C and fill it with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Add 210.0 mg of MMC catalyst and 100 g of trans-aconitic acid chain transfer agent to the weighing bottle under the protection of air to obtain a mixture; put the 500 mL reaction kettle at 80 ° C and fill it with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reactor, then add 300g propylene oxide to the reactor through the connection of the catalyst weighing bottle, stir at a speed of 500rpm, and react The kettle was placed in a constant temperature bath for polymerization reaction: the polymerization reaction temperature was 80°C, and the polymerization reaction time was 4h; after the polymerization reaction was completed, carbon dioxide was added, and the pressure was 4.0MPa, and 1700g of propylene oxide was continuously added, maintained at 80°C, and the reaction was continued for 4h; After the ...
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