PC and copolyester blend and preparation method thereof

A copolyester and blend technology, which is applied in the field of PC and copolyester blends and their preparation, can solve problems such as poor PC processing fluidity, and achieve the effects of improving fluidity, reducing processing and molding temperature, and expanding the scope of use.

Inactive Publication Date: 2013-05-01
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a blend of P

Method used

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  • PC and copolyester blend and preparation method thereof
  • PC and copolyester blend and preparation method thereof
  • PC and copolyester blend and preparation method thereof

Examples

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preparation example Construction

[0015] The method for preparing PC and copolyester blend that the embodiment of the present invention provides comprises the following steps:

[0016] Weigh each component respectively according to above-mentioned PC and copolyester blend formula;

[0017] Mix all components evenly;

[0018] Each component is melted and then extruded into granules.

[0019] The PC resin described in the embodiment of the present invention is preferably bisphenol A aromatic polycarbonate with a molecular weight of 25,000-30,000, and PC IR2200 from Idemitsu is selected here. Described copolyester is preferably polyethylene terephthalate-1,4-cyclohexanedimethanol ester, here selects polyethylene terephthalate-1 developed and produced by American Eastman, 4-Cyclohexanedimethanol ester. Wherein, the polyethylene terephthalate-1,4-cyclohexanedimethanol is prepared from three monomers of terephthalic acid, ethylene glycol and 1,4-cyclohexanedimethanol by transesterification The polycondensation p...

Embodiment 1

[0031] The PC and copolyester blend provided in this example is prepared by the following components by weight percentage: 90 parts of PC resin, 5 parts of copolyester PETG, 3 parts of toughening agent SIM, 1 part of compatibilizer T55-GMA, anti 10760.3 parts of oxygen agent, 1680.2 parts of antioxidant, 0.5 part of lubricant EBS.

[0032] Dry 90 parts of PC resin first, then mix it with the copolyester, toughener, compatibilizer, antioxidant and lubricant in the mixing tank, and extrude it through a twin-screw extruder Granulate, cool and cut into pellets. The process parameters of the twin-screw extruder are: the temperature of the first zone is 160-210°C, the temperature of the second zone is 190-220°C, the temperature of the third zone is 210-230°C, the temperature of the fourth zone is 220-230°C, the temperature of the fifth zone is 225-235°C, The temperature of the sixth zone is 220-230°C, the temperature of the seventh zone is 210-230°C, the temperature of the eighth z...

Embodiment 2

[0037] The blend of PC and copolyester provided in this example is formulated by weight percentage from the following components: 82.3 parts of PC resin, 10 parts of copolyester PETG, 5 parts of toughening agent SIM, 2 parts of compatibilizer T55-GMA, anti 10760.2 parts of oxygen agent, 1680.3 parts of antioxidant, 0.2 part of lubricant EBS.

[0038] Here, dry 82.3 parts of PC resin first, then mix with the copolyester, toughening agent, compatibilizer, antioxidant and lubricant in the mixing tank with the above ratio, and extrude through the twin-screw extruder Granulate, cool and cut into pellets. The process parameters of the twin-screw extruder are: the temperature of the first zone is 160-210°C, the temperature of the second zone is 190-220°C, the temperature of the third zone is 210-230°C, the temperature of the fourth zone is 220-230°C, the temperature of the fifth zone is 225-235°C, The temperature of the sixth zone is 220-230°C, the temperature of the seventh zone is...

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Abstract

The invention is suitable for the technical field of polymer materials and provides a PC (polycarbonate) and copolyester blend and a preparation method thereof. The PC and copolyester blend is formulated by the following components by weight percent: 69-90.6 percent of PC resin, 5-20 percent of copolyester, 3-7 percent of flexibilizer, 1-3 percent of compatilizer, 0.2-0.5 percent of antioxygen and 0.2-0.5 percent of processing aid. Through adding the copolyester, the runnability of the PC resin is improved, the machine shaping temperature is lowered and the application range is enlarged. In addition, the shortcomings that the original PC resin is difficult to process, can not resist solvents and has poor weatherability are avoided, and meanwhile, the original high impact resistance is maintained.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a blend of PC and copolyester and a preparation method thereof. Background technique [0002] Bisphenol A aromatic polycarbonate (PC), as a class of engineering plastics with superior comprehensive performance, has been widely used. But it also has some disadvantages: such as poor processing fluidity, easy stress cracking, sensitivity to notches, poor wear resistance, insufficient hydrolytic stability, poor solvent resistance, poor scratch resistance, long-term exposure to ultraviolet rays Will turn yellow. Contents of the invention [0003] The purpose of the embodiments of the present invention is to provide a blend of PC and copolyester, aiming to solve the problem of poor processing fluidity of existing PC. [0004] The embodiment of the present invention is achieved in this way, a blend of PC and copolyester is formulated by weight percentage from t...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/00C08L67/02C08L51/06C08F255/02B29B9/06
Inventor 徐东徐永付天英
Owner ANHUI KEJU NEW MATERIALS
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