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Method of manufacturing polycarbonate/polyester alloy

A polycarbonate and polyester alloy technology, which is used in the preparation of polymer alloys and the preparation of polycarbonate/polyester alloys, can solve the problems of polyester crystallization rate and crystallinity decrease, high price, stress cracking, etc.

Active Publication Date: 2009-02-18
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polycarbonate has some disadvantages: high melt viscosity, difficult processing and molding, especially large-scale products, prone to stress cracking, high notch sensitivity, solvent resistance, and expensive, so that the application of polycarbonate is restricted. certain restrictions
[0006] However, although the impact properties of the alloy materials prepared by the current compatibilization and toughening system have been improved to varying degrees, it often leads to a decrease in the crystallization rate and crystallinity of the polyester, and the thermal deformation temperature, tensile strength, and bending strength of the material , flexural modulus and dimensional stability are correspondingly reduced to varying degrees, which greatly limits the wide application of this alloy material

Method used

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  • Method of manufacturing polycarbonate/polyester alloy
  • Method of manufacturing polycarbonate/polyester alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0043] 1. Preparation of glycidyl methacrylate grafted ethylene-octene copolymer (POE-g-GMA)

[0044] 100 parts of ethylene-octene copolymer, 2 parts of glycidyl methacrylate, 0.2 part of dicumyl peroxide, 2 parts of styrene and 0.35 part of stearic acid were uniformly mixed with a high-speed mixer and then added to the twin-screw extruder. Melt blending is carried out in the machine, the temperature of the first zone is 160°C, the temperature of the second zone is 165°C, the temperature of the third zone is 170°C, the temperature of the fourth zone is 180°C, the temperature of the fifth zone is 190°C, and the temperature of the sixth zone is 200°C. The temperature in the seventh zone is 200°C, the temperature in the eighth zone is 200°C, the temperature in the ninth zone is 190°C, the screw speed is 150 rpm, and the residence time is 2.5 minutes. After cooling, drying and pelletizing, glycidyl methacrylate is obtained. Grafted ethylene-octene copolymer (POE-g-GMA), glycidyl m...

Embodiment 5-6

[0048] 1. Preparation of glycidyl methacrylate grafted ethylene-octene copolymer (POE-g-GMA)

[0049] 100 parts of ethylene-octene copolymer, 2 parts of glycidyl methacrylate, 0.2 part of dicumyl peroxide, 2 parts of styrene and 0.35 part of stearic acid were uniformly mixed with a high-speed mixer and then added to the twin-screw extruder. Melt blending is carried out in the machine, the temperature of the first zone is 160°C, the temperature of the second zone is 165°C, the temperature of the third zone is 170°C, the temperature of the fourth zone is 180°C, the temperature of the fifth zone is 190°C, and the temperature of the sixth zone is 200°C. The temperature in the seventh zone is 200°C, the temperature in the eighth zone is 200°C, the temperature in the ninth zone is 190°C, the screw speed is 150 rpm, and the residence time is 2.5 minutes. After cooling, drying and pelletizing, glycidyl methacrylate is obtained. Grafted ethylene-octene copolymer (POE-g-GMA), glycidyl m...

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Abstract

The invention discloses a preparation method of polycarbonate / polyester alloy. Glycidyl methacrylate grafted ethylene-octylene multipolymer / organic modified needle-shaped aedelforsite composite toughener, i.e. a technology of simultaneously using organic / inorganic rigid particle toughener is adopted; the glycidyl methacrylate grafted ethylene-octylene multipolymer, organic modified needle-shaped aedelforsite, polycarbonate and polyester are melted and mixed in a double-screw extruder, to obtain high-performance alloy material. The prepared polycarbonate / polyester alloy has excellent integrated mechanical properties and size stability, the notched impact strength reaches 1200J / m, the tensile strength reaches 67MPa, the elongation at break reaches 250 percent, the flexural strength is up to 98MPa, the flexural modulus reaches 2750MPa, and the thermal deformation temperature in high load (1.82MPa) is up to 105 DEG C. Therefore, the prepared polycarbonate / polyester alloy can be applied in cars, and to outer decorations, household electrical appliances, IT and the like industrial products.

Description

technical field [0001] The invention relates to a preparation method of a polymer alloy, in particular to a preparation method of a polycarbonate / polyester alloy, which can be used for automotive interior and exterior decoration parts, household appliances, IT and other industrial products, and belongs to the technical field of polymer processing. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It has the advantages of outstanding impact toughness, wide service temperature, good electrical insulation performance and dimensional stability. It has been applied in various industrial sectors, especially in automobiles. The manufacturing industry and the electrical and electronic industry are its two broad markets. However, polycarbonate has some disadvantages: high melt viscosity, difficult processing and molding, especially large-scale products, prone to stress cracking, high notch sensitivity, solvent resistance, and expen...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L51/06C08K13/06C08K9/04B29B9/12B29C47/92B29C47/10C08L67/00B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/40B29C2948/92561B29C2948/9259B29C2948/92885B29C2948/92895B29C2948/9298
Inventor 刘春艳周持兴俞炜李红军白雪峰
Owner SHANGHAI JIAO TONG UNIV
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