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Chemically-resistant excellent PC//ABS alloy

An alloy and alloy material technology, applied in the field of PC/ABS alloy and its preparation, can solve problems such as poor chemical resistance

Inactive Publication Date: 2009-08-19
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, PC / ABS is a plastic alloy with excellent processing performance. Its performance and price are between PC and ABS. Compared with PC, it has the advantages of low melt viscosity and excellent processing performance. Chemical performance is poor, which limits the application of PC / ABS alloys in some spray products

Method used

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Experimental program
Comparison scheme
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preparation example Construction

[0021] The preparation method of above-mentioned PC / ABS alloy composite material, comprises the following steps:

[0022] 1. Take the raw materials according to the weight ratio;

[0023] 2. Mix PC, ABS, SAN and acrylic toughening agent in a medium speed mixer for 20 minutes;

[0024] 3. Put the above-mentioned mixed raw materials into a twin-screw extruder, melt and extrude, and granulate; the twin-screw extruder includes ten temperature control zones, and the temperature control zones 1-2 The temperature is 180-260°C, the temperature of temperature control zone 3-4 is 180-260°C, the temperature of temperature control zone 5-6 is 180-260°C, the temperature of temperature control zone 7-8 is 180-260°C, the temperature 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 conveying section and the beginning of the melting section; the other is located at the metering segment.

Embodiment 1

[0030] Ratio of each component by weight: PC-201-15 is 60, ABS P / D150 is 20, SAN is 20. It is extruded by a twin-screw extruder with a melting temperature of 200-260°C and pelletized. The temperature of each zone is: the temperature of zone 1-2 of the twin-screw extruder is 180-260°C, the temperature of zone 3-4 is 180-260°C, the temperature of zone 5-6 is 180-260°C, and the temperature control is 7- The temperature in Zone 8 is 180-260°C, and the temperature in Zone 9-10 is 180-260°C.

Embodiment 2

[0032] The ratio of each component by weight: PC-201-15 is 60, ABS P / D150 is 20, SAN is 20, toughening agent MBS is 3. It is extruded by a twin-screw extruder with a melting temperature of 200-260°C and pelletized. The temperature of each zone is: the temperature of zone 1-2 of the twin-screw extruder is 180-260°C, the temperature of zone 3-4 is 180-260°C, the temperature of zone 5-6 is 180-260°C, and the temperature control is 7- The temperature in Zone 8 is 180-260°C, and the temperature in Zone 9-10 is 180-260°C.

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PUM

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Abstract

The invention discloses a PC / ABS alloy with excellent chemical resistance. The PC / ABS alloy mainly comprises the components with the weight portions as follows: 30-70 portions of PC, 10-30 portions of ABS, 20-30 portions of SAN, 0-5 portions of toughener and 3-7 portions of PBT. The preparation method comprises the steps as follows: the raw materials are weighed according to the weight proportion; all raw materials are put into a high-speed mixer to be mixed for 2 to 5 minutes; then the mixed raw material is arranged in a double-screw extruder to be extruded and granulated; the rotating speed of the double-screw extruder is 180-600 revolution / minute and the temperature is 180-260 DEG C. In the PC / ABS provided by the invention, PBT and crylic acid toughener are utilized to modify the PC / ABS, thereby being favorable for improving the solvent resistance of the PC / ABS alloy, wherein, the solvent resistance is improved to a great extent after the PBT is added, and the physical property of the PC / ABS is improved at the same time.

Description

technical field [0001] The invention relates to a PC / ABS alloy with excellent chemical resistance and a preparation method thereof, which are widely used in the fields of automobiles, home appliances, daily necessities and the like. Background technique [0002] PC is an amorphous engineering plastic with excellent impact strength, thermal stability, gloss, antibacterial properties, flame retardant properties and anti-pollution properties. However, due to its high molecular rigidity and steric hindrance, its melting temperature is high (270-320°C), it is difficult to process, it is difficult to produce large thin-walled products, and the residual stress in the product is relatively large, which is prone to stress cracking. At the same time, PC is sensitive to gaps. Although PC is stable to acidic and oily media, it is not resistant to alkali, which limits the practical application of PC. ABS resin has good processability and mechanical properties. Therefore, PC / ABS is a pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/04C08L67/02B29B9/02B29C47/92C08L55/02C08L25/12B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 辛敏琦李荣群张毅
Owner SHANGHAI KUMHO SUNNY PLASTICS
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