Lightweight polycarbonate composition and preparation method thereof

A technology of polycarbonate and polycarbonate resin, 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, variety of less effect

Active Publication Date: 2015-01-14
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

Examples

Experimental program
Comparison scheme
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-methylphenol is 1;

[0031] (2) Stir and mix the above raw materials in a medium-speed mixer for 20 minutes, then send them into a twin-screw extruder with a length-to-diameter ratio of 32:1 through a metering device, and control the temperature of the twin-screw extruder to 180°C , the rotation speed of the twin-screw extruder is 600 rpm, the pressure is 2 MPa, the raw materials are melted and extruded, cooled and formed in a mold, and a lightweight polycarbonate composition is obtained.

Embodiment 2

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

[0034] (2) Stir and mix the above raw materials in a medium-speed mixer for 20 minutes, then send them into a twin-screw extruder with a length-to-diameter ratio of 45:1 through a metering device, and control the temperature of the twin-screw extruder to 300°C , the rotation speed of the twin-screw extruder is 400 rpm, the pressure is 3 MPa, the raw materials are melted and extruded, cooled and formed in a mold, and a lightweight polycarbonate composition is obtained.

Embodiment 3

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

[0037] (2) Stir and mix the above raw materials in a medium-speed mixer for 20 minutes, then send them into a twin-screw extruder with a length-to-diameter ratio of 40:1 through a metering device, and control the temperature of the twin-screw extruder to 200°C , the speed of the twin-screw extruder is 200 rpm, the pressure is 2.5 MPa, the raw materials are melted and extruded, cooled and formed in a mold, and a lightweight polycarbonate composition is obtained.

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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 relates to the technical field of polycarbonate resins, in particular to a lightweight polycarbonate composition and a preparation method thereof. Background technique [0002] Due to the demand for environmental protection and energy saving, one of the trends in the development of automobiles is lightweight. The lightweight of the car is to reduce the curb weight of the car as much as possible under the premise of ensuring the strength and safety performance of the car, so as to improve the power performance of the car, reduce the consumption of dyes, and reduce the exhaust pollution. In order to meet the needs of lightweight vehicles, light metals such as aluminum, magnesium, titanium and other low-density metals are used instead of steel to reduce weight. Polycarbonate resin is widely used in the automotive field due to its excellent impact performance and heat resistance. The composite of polycarbonate resin and polybutadiene-acrylo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08J9/10B29C47/00B29C47/92B29C48/92
CPCB29C47/92
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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