Modified high-impact-resistance polystyrene and preparation method thereof

A polystyrene, high-impact technology, applied in the field of modified high-impact polystyrene and its preparation, can solve the problems of poor impact resistance and poor aging resistance of polystyrene

Active Publication Date: 2022-08-05
汕头市华麟塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a modified high-impact polystyrene and its preparation method, which solves the problems of poor impact resistance and aging resistance of polystyrene

Method used

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  • Modified high-impact-resistance polystyrene and preparation method thereof
  • Modified high-impact-resistance polystyrene and preparation method thereof
  • Modified high-impact-resistance polystyrene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) adding polystyrene, maleic anhydride and dicumyl peroxide with a mass ratio of 1000:7:0.5 to a twin-screw extruder for blending, the blending temperature is 205°C, and the blending time is 15min, after mixing uniformly, extrusion and granulation to obtain maleic anhydride modified polystyrene;

[0046] (2) acetone, maleic anhydride modified polystyrene, 2-[2-hydroxy-4-[3-(2-ethylhexyloxy)-2- Hydroxypropoxy]phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and perchloric acid were stirred and mixed, and reacted at 70°C for 4h. After the reaction was completed , filtered first, then washed with deionized water, and after washing, vacuum-dried at 50 °C for 5 h to obtain modified polystyrene;

[0047] (3) ultrasonically disperse toluene and nano-silicon dioxide at 20°C for 30 minutes, and after mixing uniformly, add γ-(2,3-glycidoxy)propyltrimethoxysilane, wherein the added toluene, nano-dioxide The mass ratio of silica and γ-(2,3-glycidoxy)propyltrimethoxysilane is ...

Embodiment 2

[0051] (1) adding polystyrene, maleic anhydride and dicumyl peroxide with a mass ratio of 1000:12:0.8 to a twin-screw extruder for blending, the blending temperature is 215°C, and the blending time is 18min, after mixing uniformly, extrusion and granulation to obtain maleic anhydride modified polystyrene;

[0052] (2) The mass ratio of acetone, maleic anhydride modified polystyrene, 2-[2-hydroxy-4-[3-(2-ethylhexyloxy)-2- Hydroxypropoxy]phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and perchloric acid were stirred and mixed, and reacted at 75°C for 5h. After the reaction was completed , first filtered, then washed with deionized water, and after washing, vacuum-dried at 55 °C for 6 h to obtain modified polystyrene;

[0053] (3) ultrasonically disperse toluene and nano-silicon dioxide at 25°C for 35 minutes, and after mixing uniformly, add γ-(2,3-glycidoxy)propyltrimethoxysilane, wherein the added toluene, nano-dioxide The mass ratio of silicon oxide and γ-(2,3-glycidoxy)...

Embodiment 3

[0057] (1) adding polystyrene, maleic anhydride and dicumyl peroxide with a mass ratio of 1000:15:1 to a twin-screw extruder for blending, the blending temperature is 220°C, and the blending time is 20min, after mixing uniformly, extrusion and granulation to obtain maleic anhydride modified polystyrene;

[0058] (2) The mass ratio of acetone, maleic anhydride modified polystyrene, 2-[2-hydroxy-4-[3-(2-ethylhexyloxy)-2- Hydroxypropoxy]phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and perchloric acid were stirred and mixed, and reacted at 80 °C for 6 h. After the reaction was completed , first filtered, then washed with deionized water, and after washing, vacuum-dried at 55 °C for 7 h to obtain modified polystyrene;

[0059] (3) ultrasonically disperse toluene and nano-silicon dioxide at 30°C for 40 minutes, and after mixing uniformly, add γ-(2,3-glycidoxy)propyltrimethoxysilane, wherein the added toluene, nano-dioxide The mass ratio of silicon oxide and γ-(2,3-glycidoxy)...

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Abstract

The invention relates to the technical field of high-impact-resistance polystyrene, and discloses modified high-impact-resistance polystyrene which is prepared from modified polystyrene, modified polybutadiene rubber, a defoaming agent and an antioxidant through melt blending. According to the present invention, the polystyrene has the high reflectivity on the ultraviolet ray with the wavelength of less than 490 nm, the polybutadiene rubber can improve the impact strength of the polystyrene, and the 2-[2-hydroxy-4-[3-(2-ethylhexyloxy)-2-hydroxypropoxy] phenyl]-4, 6-bis (2, 4-dimethylphenyl)-1, 3, 5-triazine can improve the anti-ultraviolet ability of the polystyrene matrix so as to improve the anti-ultraviolet ability of the polystyrene matrix; the flexible long chain can improve the impact resistance of polystyrene, and hydroxyl groups contained in the modified polybutadiene rubber and carboxyl groups on a modified polystyrene matrix form hydrogen bonds, so that the compatibility between the polybutadiene rubber and the polystyrene matrix is improved, and an effective network structure is formed; the obtained polystyrene has excellent impact resistance and aging resistance.

Description

technical field [0001] The invention relates to the technical field of high-impact polystyrene, in particular to a modified high-impact polystyrene and a preparation method thereof. Background technique [0002] Polystyrene (PS) is an amorphous plastic that is easy to process, has excellent electrical insulation, strong rigidity, low price and good stability, but the low impact strength of polystyrene limits the performance of polystyrene to a certain extent. Scope of application: In order to improve the impact performance of polystyrene, elastomers are added in the process of synthesizing polystyrene, usually polybutadiene rubber, styrene-butadiene rubber and other elastomers are used to modify polystyrene to make high impact resistance. The resulting high-impact polystyrene has excellent impact resistance and processing properties, and is widely used in automobiles, equipment, electric products, medicine, packaging and other fields. [0003] Aging is a natural characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L87/00C08F257/02C08F222/06C08F8/30C08G83/00
CPCC08L51/003C08F257/02C08F8/30C08G83/001C08L87/005C08F222/06
Inventor 谢麟璧
Owner 汕头市华麟塑化有限公司
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