Polyster elastomer foam material with high melt strength and preparation method thereof
A technology of polyester elastomer and high melt strength, which is applied in the field of nanocomposite membranes, can solve the problems of no polyester elastomer melt strength, etc., and achieve the effects of easy control of process conditions, easy availability of raw materials, and low cost
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Embodiment 1
[0036] 150 parts by weight of dimethyl terephthalate, 200 parts by weight of ethylene glycol, 150 parts by weight of polyethylene glycol (molecular weight 1500g / mol) and catalyst magnesium acetate, tetrabutyl titanate (each 0.2 parts by weight) are added to the polymerization in the cauldron. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 190 degrees, and the reaction was carried out for 4 hours until no methanol distilled out. Add 10 parts by weight of surface hydroxyl-rich SiO with a particle size of 80 nm to the system 2 , 0.5 parts by weight of antioxidant (168), 0.5 parts by weight of anti-aging agent (UV-234), 0.5 parts by weight of phosphite, the temperature is slowly raised to 230 ° C, the pressure is reduced to 0.01 MPa, and the reaction is performed for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and t...
Embodiment 2
[0038]150 parts by weight of dimethyl phthalate, 40 parts by weight of butanediol, 10 parts by weight of polytetrahydrofuran ether glycol (molecular weight 2000g / mol) and catalyst magnesium acetate, tetrabutyl titanate (each 0.1 parts by weight) are added to in the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device, nitrogen input device and fractionation device). The temperature was raised to 190 degrees, and the reaction was carried out for 4 hours until no methanol distilled out. Add 3 parts by weight of surface hydroxyl-rich TiO with a particle size of 160 nm to the system 2 With 0.5 parts by weight of antioxidant (1010), 0.5 parts by weight of antiaging agent UV-2344, and 0.5 parts by weight of phosphite, the temperature was slowly raised to 230° C., and the pressure was lowered to 0.01 MPa, and reacted for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and the reaction...
Embodiment 3
[0040] 150 parts by weight of terephthalic acid, 40 parts by weight of propylene glycol, 10 parts by weight of polyethylene glycol (molecular weight: 4000 g / mol), catalyst calcium acetate and cobalt acetate (0.1 parts by weight each) were added to the polymerization kettle. (Note: this polymerization kettle is equipped with stirring device and nitrogen input device). The pressure was increased to 4MPa, the temperature was raised to 190°C, and the reaction was carried out for 2 hours. After depressurization, add 5 parts by weight of surface hydroxyl-rich SiO with a particle size of 80 nm to the system 2 With 0.5 parts by weight of antioxidant (944), 0.5 parts by weight of hexamethylphosphoric triamide, and 0.5 parts by weight of phosphite, the temperature was slowly raised to 230° C., and the pressure was lowered to 0.01 MPa, and reacted for 1 hour. Subsequently, the temperature of the system was raised to 260° C., the pressure was lowered to 30 Pa, and the reaction was contin...
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