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Lightweight polycarbonate composition and preparation method thereof

A technology of polycarbonate and composition, which is applied in the field of lightweight polycarbonate composition and its preparation, can solve the problems of complex preparation process and narrow application field, and achieve excellent mechanical properties, simple production process and light density Effect

Active Publication Date: 2013-01-09
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can make the material lightweight, but the preparation process is complicated, and it is only suitable for the preparation of sheet-like materials, and the application field is narrow

Method used

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  • Lightweight polycarbonate composition and preparation method thereof

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Effect test

Embodiment 1

[0030] (1) Weigh each raw material according to the following parts by weight: PC-1 is 50, ABS8391 is 50, azodicarbonamide is 2, 2,6-tertiary butyl-4-resol is 1;

[0031] (2) After the above-mentioned raw materials are stirred and fully mixed in a medium-speed mixer for 20 minutes, they are fed into a twin-screw extruder with an aspect ratio of 32:1 through a metering device, and the temperature of the twin-screw extruder is controlled to be 180°C , the rotational speed of the twin-screw extruder is 600 rpm, the pressure is 2 MPa, the raw materials are melt extruded, and cooled in a die to form a lightweight polycarbonate composition.

Embodiment 2

[0033] (1) Weigh each raw material according to the following parts by weight: PC-1 is 90, ABS3453 is 10, barium azodicarboxylate is 1, and trioctyl phosphate is 0.1;

[0034] (2) After the above-mentioned raw materials are stirred and fully mixed in a medium-speed mixer for 20 minutes, they are fed into a twin-screw extruder with an aspect ratio of 45:1 through a metering device, and the temperature of the twin-screw extruder is controlled to be 300°C , the rotational speed of the twin-screw extruder is 400 rpm, and the pressure is 3 MPa.

Embodiment 3

[0036] (1) Weigh each raw material according to the following parts by weight: PC-2 is 70, ABS3504 is 30, high temperature expansion capsule foaming agent (AC foaming agent) is 1,2,6-tertiary butyl-4-methyl Grade phenol is 0.5, triisodecyl phosphite is 0.5;

[0037] (2) After the above-mentioned raw materials are stirred and fully mixed in a medium-speed mixer for 20 minutes, they are fed into a twin-screw extruder with a length-to-diameter ratio of 40:1 through a metering device, and the temperature of the twin-screw extruder is controlled to be 200°C , the speed of the twin-screw extruder is 200 rpm, the pressure is 2.5 MPa, the raw materials are melt-extruded, and cooled in a die to form a lightweight polycarbonate composition.

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Abstract

The invention discloses a lightweight polycarbonate composition which comprises following raw materials, by weight, 50-90 parts of polycarbonate, 10-50 parts of polybutadiene-acrylonitrile-styrene copolymer resin, 0.2-2 parts of chemical foamer with the decomposition temperature from 200 DEG C to 260 DEG C and 0.1-1.0 part of antioxidant. The invention further provides a preparation method for the lightweight polycarbonate composition. The method includes: weighing the raw materials according to the parts by weight, feeding the raw materials into a twin-screw extruder by a metering device after the raw materials are fully mixed in a medium-speed mixer, fusing for extruding, and cooling in a die for forming. The lightweight polycarbonate composition and the preparation method thereof are fewer in kinds of the raw materials and simple in production process, the polycarbonate and the polybutadiene-acrylonitrile-styrene copolymer resin are added into the chemical foamer, so that the obtained lightweight polycarbonate composition has the advantage of low density while excellent mechanical performances are maintained.

Description

Technical field [0001] The invention involves the field of polycarbonate resin technology. Specifically, it is a lightweight polycarbonate composition and its preparation method. Background technique [0002] Due to the needs of environmental protection and energy conservation, one of the trends of automobile development is lightweight.The lightweight of the car is to reduce the quality of the car as much as possible under the premise of ensuring the strength and safety of the car, thereby improving the power of the car, reducing dye consumption, and reducing exhaust pollution.In order to meet the demand of lightweight automobiles, low -density metals such as light metals such as aluminum, magnesium, and titanium on metals instead of steel to reduce weight.Polycarbonate resin is widely used in the automotive field due to its excellent impact performance and heat resistance.Polycarbonate resin and polyteadiene -acryline -lyezyrene closer polymer (PC / ABS) are widely used for multip...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08J9/10B29C47/00B29C47/92B29C48/92
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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