Wide temperature range antishock polystyrene material and its prepn process
A technology of impact-resistant polystyrene and polystyrene, applied in the field of new materials and its preparation in the field of material science and technology, to achieve the effect of improving rigidity and good impact resistance
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Embodiment 1
[0019] In a 2-liter polymerization reactor with a stirrer, a thermometer, a temperature control system, and a decompression system, add 960 grams (96.0%) of styrene, stir slowly at room temperature, add 10 grams of polybutadiene (1.0%) ), polybutadiene is completely dissolved in styrene, and 20 grams (2.0%) of triisopropoxy mixed rare earths are added until completely dissolved and mixed uniformly, and an initiator of 0.5% styrene amount is added, and nitrogen is charged at 60° C. Polymerization, until the viscosity increases significantly, slowly raise the temperature to 90°C and 110°C to continue the high-temperature polymerization in stages, distill out low boiling substances such as residual monomers under reduced pressure, add 10.0 grams (1.0%) of other additives and then add Extruded, air-cooled or water-cooled pelletized. The obtained 2.0% triisopropoxy mixed rare earth and 1.0% polybutadiene co-toughened polystyrene. Its impact strength at room temperature is 6.1KJ / m ...
Embodiment 2
[0021] In a 2-liter polymerization reactor equipped with a stirrer, a thermometer, a temperature control, and a decompression system, add 970 grams (97.0%) of styrene, slowly stir at room temperature and add 9.0 grams (0.9%) of acrylonitrile, butadiene 10.0 grams (1.0%) of diene and 1.0 grams (0.1%) of monooleoyloxy-dimethoxylanthanum make it dissolve in styrene completely and mix uniformly, add the initiator of 0.5% styrene amount, fill nitrogen in Initiate polymerization at 60°C until the viscosity increases significantly, then slowly raise the temperature to 90°C and 110°C to continue high-temperature polymerization in sections, after distilling off residual monomers and other low boilers under reduced pressure, add 10.0 grams (1.0%) of other Additives are extruded under pressure, air-cooled or water-cooled and cut into pellets. The obtained 0.1% monooleoyloxy-dimethoxylanthanum, 0.9% acrylonitrile, 1.0% butadiene elastic segment co-toughened polystyrene. Its impact streng...
Embodiment 3
[0023] In a 2 liter polymerization reactor with stirrer, thermometer and temperature control, decompression system, add 930 grams (93.0%) styrene, then add 20 grams (2.0%) of nitrile rubber, polybutadiene 10 gram (1.0%), stir slowly at room temperature to be completely dissolved in styrene, add mixed alkoxy mixed rare earth 30.0 gram (3.0%) to completely dissolve and mix homogeneously, add the initiator of 0.5% styrene amount, Nitrogen was filled to initiate polymerization at 60°C until the viscosity increased significantly, and the temperature was gradually increased to 90°C and 110°C to continue the high-temperature polymerization in sections, and low boiling substances such as residual monomers were evaporated under reduced pressure, and 10.0 g (1.0% ) and other additives, pressurized extrusion, air cooling or water cooling pelletizing. The obtained 3.0% mixed alkoxy mixed rare earth, 2.0% nitrile rubber and 1.0% polybutadiene two kinds of synthetic rubbers are co-toughened p...
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