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High-fluidity high-toughness PC/ABS composition

A high-toughness, high-flow technology, applied in the field of high-flow high-toughness PC/ABS composition, can solve the problems of poor solvent resistance, limited improvement, high rigidity, etc., meet the requirements of fluidity and gloss, improve flow The effect of sex and gloss

Inactive Publication Date: 2016-09-21
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polycarbonate (PC) is a thermoplastic engineering plastic with excellent physical and mechanical properties. It has excellent transparency and flame retardancy. At the same time, because it is an amorphous material, it has excellent dimensional stability and is widely used in many fields. However, due to the rigidity of the polycarbonate molecular chain, high melt viscosity, easy to produce stress cracking, poor solvent resistance, and easy to decompose when exposed to water at high temperatures, its application range is limited to a certain extent.
Generally, through modification technology, although the addition of ABS can improve the fluidity of the composition, the degree of improvement is limited, and it is difficult to meet the requirements of thin-walled material fluidity

Method used

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  • High-fluidity high-toughness PC/ABS composition
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  • High-fluidity high-toughness PC/ABS composition

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Experimental program
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Effect test

preparation example Construction

[0026] The preparation method of the high-flow and high-toughness PC / ABS composition comprises the following steps: mixing PC, flow improver, ABS, and impact modifier in a high-speed mixer for 1-5 minutes to obtain a premix, Put the premix into a twin-screw extruder and extrude and granulate.

[0027] The extrusion process of the twin-screw extruder is as follows: the temperature of the first zone is 220-260°C, the temperature of the second zone is 220-260°C, the temperature of the third zone is 230-270°C, the temperature of the fourth zone is 230-270°C, and the temperature of the fifth zone is 230°C. -270℃, the temperature of six zones is 220-260℃, the temperature of seven zones is 220-260℃, the temperature of eight zones is 220-260℃, the temperature of nine zones is 220-260℃, and the temperature of machine head is 240-280℃.

Embodiment 1-3、 comparative example 1-3

[0029] After the raw materials listed in Table 1 are prepared, a high-flow and high-toughness PC / ABS composition is obtained, and the test is carried out according to the method and standard of the following performance test:

[0030] Notched Izod Impact: Test standard ASTM D256, tested on Zwick electronic universal testing machine;

[0031] Melt flow rate: test standard ASTM D1238, 260℃, 2.16KG;

[0032] Gloss: Test Standard ASTM D1455.

[0033] Table 1

[0034]

[0035]

[0036] It can be seen from the results in Table 1 that the addition of the flow improver can significantly improve the fluidity of the material and take into account good toughness.

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Abstract

The invention provides a high-fluidity high-toughness PC (Poly Carbonate) / ABS (Acrylonitrile Butadiene Styrene) composition. The high-fluidity high-toughness PC / ABS composition is prepared from the following raw materials in parts by weight: 30 to 80 parts of PC, 5 to 25 parts of a flow improving agent, 10 to 55 parts of ABS, and 5 to 15 parts of an impact resistant modifier. According to the high-fluidity high-toughness PC / ABS composition, through the addition of the flow improving agent, the fluidity and the glossiness of the material are remarkably improved, and meanwhile, good toughness and strength of the material are maintained; the requirements on the fluidity and the glossiness of the material of different costumers can be completely met.

Description

technical field [0001] The invention belongs to the technical field of polymer modification, and in particular relates to a PC / ABS composition with high flow and toughness. Background technique [0002] Polycarbonate (PC) is a thermoplastic engineering plastic with excellent physical and mechanical properties. It has excellent transparency and flame retardancy. At the same time, because it is an amorphous material, it has excellent dimensional stability and is widely used in many fields. However, due to the high rigidity of the polycarbonate molecular chain, high melt viscosity, easy stress cracking, poor solvent resistance, and easy decomposition when exposed to water at high temperatures, it limits its application range to a certain extent. Generally through modification technology, although the addition of ABS can improve the fluidity of the composition, the degree of improvement is limited, and it is difficult to meet the requirements of thin-walled material fluidity. ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L51/04C08K5/523B29C47/92B29C48/92
CPCC08L69/00B29C48/92B29C2948/92704C08L2205/03C08L55/02C08L51/04C08K5/523
Inventor 陈勇文佟伟艾军伟李明昆何继辉岑茵张现军陶四平
Owner TIANJIN KINGFA NEW MATERIAL