Transparent polycarbonate alloy composite material and its prepn process

A technology of polycarbonate and composite materials, which is applied in the field of highly transparent polycarbonate alloy composite materials and its preparation, and can solve the problem of high cost of transparent polycarbonate alloys

Inactive Publication Date: 2007-12-19
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing transparent PC / PBT or transparent PC / PBT plastic alloy technology is monopolized by foreign countries, resulting in high cost of transparent polycarbonate alloys, and to develop a method that can reduce costs and realize domestic production as much as possible. It has high surface brightness and excellent hydrolysis resistance, and can be widely used in the fields of mobile phone cover production, household appliances, auto parts and other high-transparency polycarbonate alloy composite materials and its preparation method

Method used

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Comparison scheme
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preparation example Construction

[0027] The preparation method of above-mentioned highly transparent polycarbonate alloy composite material, comprises the following steps:

[0028] A, take described raw material according to weight percentage;

[0029] B. Mix polycarbonate, polyester, alloy compatibilizer, antioxidant, and catalyst in a medium-speed mixer for 3-7 minutes;

[0030] C. The above-mentioned mixed raw materials are put into a twin-screw extruder, melted and extruded, and granulated; the conveying time of the mixed material in the screw is 1-2 minutes. Among them, the temperature of the temperature control zone 1-2 of the twin-screw extruder is 180-260°C, the temperature of the temperature control zone 3-4 is 180-260°C, the temperature of the temperature control zone 5-6 is 180-260°C, and the temperature control zone 7- The temperature in zone 8 is 180-260°C, and the temperature in zone 9-10 is 180-260°C; the twin-screw extruder has two vacuum places, one of which is located at the end of the feed...

Embodiment 1

[0038] Percentage by weight of each component: polycarbonate PC (L-1250Y) is 50%, polyethylene terephthalate (PET) is 49.39%, compatibilizer 0.5%, catalyst 0.01%, antioxidant 0.1% Mix in a mixer on medium speed for 5 minutes. It is extruded by a twin-screw extruder with a melting temperature of 200-260°C and pelletized. The temperature of each section is as follows: the temperature of zone 1-2 of the twin-screw extruder is 200-260°C, the temperature of zone 3-4 is 200-260°C, the temperature of zone 5-6 is 200-260°C, and the temperature of zone 7-8 is 200-260°C, the temperature in zone 9-10 is 200-260°C. The conveying time of the mixture in the screw is 90 seconds;

Embodiment 2

[0040] Percentage by weight of each component: polycarbonate PC (L-1250Y) is 50%, polyethylene terephthalate (PET) is 44.09%, polybutylene terephthalate (PBT) is 5%, compatibilizer 0.8%, catalyst 0.01%, and antioxidant 0.1% were mixed in a medium-speed mixer for 5 minutes. It is extruded by a twin-screw extruder with a melting temperature of 200-260°C and pelletized. The temperature of each section is as follows: the temperature of zone 1-2 of the twin-screw extruder is 200-260°C, the temperature of zone 3-4 is 200-260°C, the temperature of zone 5-6 is 200-260°C, and the temperature of zone 7-8 is 200-260°C, the temperature in zone 9-10 is 200-260°C. The conveying time of the mixture in the screw is 90 seconds;

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Abstract

The present invention relates to one kind of transparent polycarbonate alloy material and its preparation process. The transparent polycarbonate alloy material consists of polycarbonate 10-89 wt%, linear saturated polyester 10-89 wt%, alloy compatilizer 0.5-0.8 wt%, catalyst 0.01-0.05 wt%, and antioxidant 0.1-0.5 wt%. It is prepared through mixing the materials and pelletizing in a double screw extruder. The polycarbonate alloy material has high transparency, excellent hydrolysis resistance and wide use, and may be used in making cellphone cover, household appliance and automobile parts, etc.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a highly transparent polycarbonate alloy composite material that can broaden the application field of pure polycarbonate and can be widely used in the fields of mobile phone cover production, home appliances, auto parts and the like, and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an amorphous engineering material with excellent impact strength, thermal stability, gloss, antibacterial properties, flame retardant properties and anti-pollution properties. However, due to the high molecular rigidity and steric hindrance, its melting temperature is high, processing is difficult, and it is difficult to produce large thin-walled products, and the residual stress of the product is large, and stress cracking is prone to occur. At the same time, PC is sensitive to notches, and has poor hydrolytic stability and solvent resistance. These defects limit the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/00B29C47/40B29C47/92B29B9/12B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92561B29C2948/92895
Inventor 徐东贺永李小波
Owner SHENZHEN KEJU NEW MATERIAL
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