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Weather-resistant PC (Polycarbonate) material and preparation method thereof

A technology of antioxidant and chlorinated polyethylene, which is applied in the field of weather-resistant PC materials and their preparation, can solve problems such as limiting the scope of use, and achieve the effects of good processability and mechanical properties, good compatibility, and good oil resistance.

Inactive Publication Date: 2014-05-07
NANTONG RED STONE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polycarbonate is a kind of thermoplastic polymer, which can be processed by injection and extrusion. Because polycarbonate contains a large amount of confidant in its molecules and often contains a small amount of water, it is easy to cause degradation during processing and cannot be processed at high temperatures. Long-term use, thus limiting its scope of use

Method used

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  • Weather-resistant PC (Polycarbonate) material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Dry the bisphenol A polycarbonate at 120° C. for 6 hours to obtain a dried bisphenol A polycarbonate.

[0026] (1) Weigh 66 kg of dry bisphenol A polycarbonate, 10 kg of chlorinated polyethylene, 10 kg of polyisobutylene, 10 kg of polyethylene, 8 kg of maleic anhydride grafted polypropylene, 8 kg of dibutyl hydroxytoluene and Diphenyl phosphite 2kg;

[0027] (2) Add the raw materials weighed in step (1) into the high mixer, control the mixing temperature at 80°C, and the mixing time is 5 minutes, add the mixed materials into the twin-screw extruder, pass Twin-screw extruder extrusion, granulation;

[0028] The temperature of each zone of the screw is: 130°C in the first zone, 150°C in the second zone, 180°C in the third zone, 210°C in the fourth zone, and 220°C in the fifth zone.

[0029] The performance test results of the prepared materials are shown in Table 1.

Embodiment 2

[0031] Dry the bisphenol A polycarbonate at 130° C. for 6 hours to obtain a dried bisphenol A polycarbonate.

[0032] (1) Weigh 80 kg of dry bisphenol A polycarbonate, 20 kg of chlorinated polyethylene, 15 kg of polyisobutylene, 10 kg of polyethylene, 10 kg of maleic anhydride grafted polypropylene, 5 kg of dibutyl hydroxytoluene and Diphenyl phosphate 3 kg;

[0033] (2) Add the raw materials weighed in step (1) into the high mixer, control the mixing temperature at 100°C, and the mixing time is 3 minutes, add the mixed materials into the twin-screw extruder, pass Twin-screw extruder extrusion, granulation;

[0034] The temperature of each zone of the screw is: 130°C in the first zone, 150°C in the second zone, 180°C in the third zone, 210°C in the fourth zone, and 220°C in the fifth zone.

[0035] The performance test results of the prepared materials are shown in Table 1.

Embodiment 3

[0037] Dry the bisphenol A polycarbonate at 120° C. for 6 hours to obtain a dried bisphenol A polycarbonate.

[0038] (1) Weigh 70 kg of dry bisphenol A polycarbonate, 15 kg of chlorinated polyethylene, 10 kg of polyisobutylene, 8 kg of polyethylene, 10 kg of maleic anhydride grafted polypropylene, 5 kg of dibutyl hydroxytoluene and Diphenyl phosphite 2kg;

[0039] (2) Add the raw materials weighed in step (1) into the high mixer, the mixing temperature is controlled at 90°C, and the mixing time is 3 minutes, and the mixed materials are added to the twin-screw extruder, passed through Twin-screw extruder extrusion, granulation;

[0040] The temperature of each zone of the screw is: 140°C in the first zone, 170°C in the second zone, 200°C in the third zone, 220°C in the fourth zone, and 220°C in the fifth zone.

[0041] The performance test results of the prepared materials are shown in Table 1.

[0042] Table 1

[0043]

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Abstract

The invention belongs to the field of macromolecular materials and discloses a method for preparing a weather-resistant PC (Polycarbonate) material. The material is prepared from the following ingredients in parts by weight: 66-80 parts of PC, 10-20 parts of chlorinated polyethylene, 10-15 parts of polyisobutylene, 8-10 parts of polyethylene, 8-10 parts of maleic anhydride grafted polypropylene, 5-8 parts of antioxidant and 2-3 parts of diphenyl phosphite. The material is prepared through adding PC, chlorinated polyethylene, polyisobutylene, polyethylene, maleic anhydride grafted polypropylene, the antioxidant and diphenyl phosphite into a twin-screw extruder. The weather-resistant PC material prepared by the method has the advantages that excellent mechanical properties are kept, the size of the material is stable, and meanwhile, the weather resistance is high; moreover, the machining method is simple and easy to implement, so that the material is applicable to the manufacture of various electrical appliance shells and automotive exterior decoration parts.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a weather-resistant PC material and a preparation method thereof. Background technique [0002] Polycarbonate is a kind of thermoplastic polymer, which can be processed by injection and extrusion. Because polycarbonate contains a large amount of confidant in its molecules and often contains a small amount of water, it is easy to cause degradation during processing and cannot be processed at high temperatures. Long-term use, thus limiting its scope of use. [0003] Polycarbonate has excellent comprehensive mechanical, thermal and electrical properties, and its price is cheaper than special engineering plastics such as polysulfone and polyimide. It has become a powerful candidate material and has been successfully used in electrical, automotive and other manufacturing fields . Because outdoor applications require higher weather resistance, impact toughness, and heat resistance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/28C08L23/20C08L23/06C08L51/06C08K5/13C08K5/526B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/92704B29C2948/92895
Inventor 石磊
Owner NANTONG RED STONE TECH DEV
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