High-fluidity high-impact-resistance scraping-resistance polycarbonate composition and preparation method thereof

A technology of polycarbonate and composition, applied in the field of polycarbonate composition and its preparation, can solve the problems of low production cost, insufficient impact resistance and heat resistance, and achieves improved melt fluidity and impact strength, The effect of meeting flow and impact resistance requirements, excellent ductility and scratch resistance

Active Publication Date: 2011-05-25
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this polyurethane-based resin is not a thermoplastic polyurethane elastomer, and impact resistance and heat resistance are still insufficient
[000

Method used

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  • High-fluidity high-impact-resistance scraping-resistance polycarbonate composition and preparation method thereof
  • High-fluidity high-impact-resistance scraping-resistance polycarbonate composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0052] The operation process is as follows: according to the formula in Table 1, put polycarbonate, ABS, flow impact modifier TPU, compatibilizer, antioxidant, and lubricant into a high-speed mixer and mix them, and then add the mixture to the screw In the loss-in-weight feeding scale above the feeding port of the extruder, control the conveying section of the twin-screw extruder at 210-220°C, the plasticizing section at 225-245°C, the metering section at 225-240°C, and control the screw speed at 200-600rpm. Control the vacuum degree of the vacuum device in the twin-screw metering section to be less than -0.7 bar, tie the strips, water-cool, air-dry, pelletize, and dry to obtain the product.

[0053] Embodiment 1-7 and comparative example 1-3 formula are shown in Table 1 in detail

[0054]

[0055] In Table 1, the ingredients for Comparative Examples and Examples are as follows:

[0056] PC-1 is a bisphenol A polycarbonate powder with a weight average molecular weight of 3...

Embodiment 8

[0078] In this example, a high-fluidity, high-impact and scratch-resistant polycarbonate composition was prepared. With the bisphenol A type polycarbonate powder PC-125.5 weight part of weight average molecular weight 34000, the bisphenol A type polycarbonate powder PC-330 weight part of weight average molecular weight 22000, the ABS particle 38 weight parts of bulk method production , flow impact modifier polyester thermoplastic polyurethane elastomer TPU (Shao A 80) 3.5 parts by weight, compatibilizer ethylene-butyl acrylate-glycidyl methacrylate copolymer (PTW) 2.5 parts by weight, antioxidant Add 0.2 parts by weight of agent B9000, 0.3 parts by weight of lubricant PETS, add in the high-speed mixer and stir for 10min, then add the mixed material into the Brabender weight loss feeding scale above the Berstorff UTX 25mm twin-screw extruder, control The feed rate is 20Kg / h, the screw speed is 300rpm, the conveying section of the extruder is 215°C, the plasticizing section is 2...

Embodiment 9

[0080] In this example, a high-fluidity, high-impact and scratch-resistant polycarbonate composition was prepared. With bisphenol A type polycarbonate powder PC-171.5 weight part with weight-average molecular weight 28000, injection molding grade SAN particle (nitrile content 25%) 12.5 weight part, ABS high rubber powder (glue content 50%) 10.5 weight part, flow Impact modifier polyester thermoplastic polyurethane elastomer TPU (Shao A 85) 5 parts by weight, antioxidant B9000.2 parts by weight, lubricant PETS 0.3 parts by weight are added in a high-speed mixer and stirred for 10 minutes, and then mixed The material is put into the Brabender loss-in-weight feeding scale above the Berstorff UTX 25mm twin-screw extruder, the feed rate is controlled at 20Kg / h, the screw speed is 300rpm, the conveying section of the extruder is 220°C, the plasticizing section is 240°C, and the metering section 235°C, the vacuum degree of the vacuum device downstream of the extruder is -0.7 bar, wir...

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Abstract

The invention relates to a high-fluidity high-impact-resistance scraping-resistance polycarbonate composition and a preparation method. The high-fluidity high-impact-resistance scraping-resistance polycarbonate composition mainly comprises the following ingredients in parts by weight: 45 to 85 parts of aromatic polycarbonate, 15 to 55 parts of acrylonitrile-butadiene-styrene (ABS), 0.5 to 20 parts of flowing impact-resistance modifying agents of thermoplastic polyurethane elastomers (TPU), 0 to 7 parts of compatibilizers, 0.05 to 1 part of antioxidants and 0.1 to 1 part of lubricating agents.The high-fluidity high-impact-resistance scraping-resistance polycarbonate composition provided by the invention is blended by a double-screw extruding machine, the thermoplastic polyurethane elastomer addition is used for further improving the fluidity and the impact resistance of the polycarbonate composition, and meanwhile, the scraping resistance and the low-temperature expansibility of the composition can be improved, so the application range of the composition is widened.

Description

technical field [0001] The invention relates to a polycarbonate composition and a preparation method thereof, in particular to a high-flow, high-impact and scratch-resistant polycarbonate composition and a preparation method thereof. Background technique [0002] Polycarbonate (PC) has excellent mechanical properties, heat resistance and optical properties, can be used in the range of -100 ° C to 140 ° C, and can be colored arbitrarily. However, the high viscosity of polycarbonate melt causes certain difficulties in processing. In addition, although polycarbonate has very high impact resistance at room temperature, its impact performance at low temperatures is still unsatisfactory and sensitive to notches. In order to improve the processability and impact resistance of polycarbonate, a variety of improvement methods have been proposed in the industry, such as using acrylonitrile-butadiene-styrene graft copolymer (ABS) for blending in US Patent No. 3,130,177, It significant...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L75/06C08L25/12C08L75/08C08L51/06C08L51/00C08L25/08C08L23/08
Inventor 潘勇军张振威李春张雷宋林嵘乔石张宏科华卫琦丁建生
Owner WANHUA CHEM GRP CO LTD
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