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

Inactive Publication Date: 2005-09-28
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no research reports or reports have been found at home and abroad that use rare earth alkoxides and elastic monomers or elastic polymers to toughen polystyrene to obtain wide temperature range impact polystyrene.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The present invention relates to material science and technology, and is especially wide temperature range antishock polystyrene material and its preparation process. The antishock polystyrene material is prepared in a in-situ doping copolymerization or doping co-mixing process, and features the simultaneous introducing of RE alkoxide and elastic monomer or elastic polymer. By means of the coordination of RE metal ion in the RE alkoxide and the benzene ring in polystyrene, and the synergistic effect of the RE alkoxide and the benzene ring, C-C double bond, etc. in the elastic monomer or elastic polymer, polystyrene material with wide temperature range as well as raised rigidity, solvent resistance, heat stability, weather resistance, etc. is prepared.

Description

technical field [0001] The invention relates to a wide temperature range impact polystyrene material and a preparation method thereof, and relates to a new material in the field of material science and technology and a preparation method thereof. Background technique [0002] Polystyrene is one of the large-scale synthetic resins widely used today, but its disadvantages such as brittleness, poor light and heat stability, and intolerant to solvents limit the use of polystyrene in low-temperature environments or regions to a large extent. At present, the main method of toughening polystyrene is to copolymerize monomers such as acrylonitrile and butadiene with styrene; elastic polymers such as styrene-butadiene rubber, nitrile rubber, and polybutadiene are dissolved in styrene for copolymerization; Blending thermoelastic polymers such as styrene rubber, nitrile rubber, and polybutadiene with polystyrene; or blending nanopowder with polystyrene, although it can effectively impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/44C08F12/08C08K3/22C08L25/04
Inventor 章文贡林美娟王文
Owner FUJIAN NORMAL UNIV
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