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Environment-protection flame-proof fiberglass reinforcing polyester alloy material and method for producing the same

A polyester alloy and glass fiber technology, which is applied in the field of polycarbonate alloy materials and its preparation, can solve the problems of high implementation cost, low molecular weight, and reducing the heat resistance temperature of PC/PBT alloys, etc.

Inactive Publication Date: 2008-07-16
ANHUI KEJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing environmental protection flame-retardant PC / PBT alloy patent, it is mentioned that the flame retardant is aromatic phosphate. In addition to flame retardant, aromatic phosphate also has the effect of plasticizer. Because of its low molecular weight, it will The heat-resistant temperature of PC / PBT alloy is greatly reduced, and the implementation cost of the above-mentioned patented technology is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The weight percentage of polycarbonate PC (L-1250Y) is 50%, polyethylene terephthalate (PBT) is 40%, flame retardant 3%, compatibilizer 3%, antioxidant 0.2% , Lubricant 0.3, and mix in a mixer on medium speed for 5 minutes. After being extruded by a twin-screw extruder with a melting temperature of 200-260°C, 3.5% of 988# continuous yarn is added for granulation. The temperature of each section is as follows: the temperature of zone 1-2 of the twin-screw extruder is 200-260°C, the temperature of zone 3-4 is 200-260°C, the temperature of zone 5-6 is 200-260°C, and the temperature of zone 7-8 is 200-260°C, the temperature in zone 9-10 is 200-260°C. The conveying time of the mixture in the screw is 90 seconds;

Embodiment 2

[0040] The weight percentage of polycarbonate PC (L-1250Y) is 55%, polyethylene terephthalate (PBT) is 30%, flame retardant 5%, compatibilizer agent 4%, antioxidant 0.2% , Lubricant 0.4, and mix in a mixer on medium speed for 5 minutes. After being extruded by a twin-screw extruder with a melting temperature of 200-260 DEG C, 4.6% of 988# continuous yarn is added for granulation. The temperature of each section is as follows: the temperature of zone 1-2 of the twin-screw extruder is 200-260°C, the temperature of zone 3-4 is 200-260°C, the temperature of zone 5-6 is 200-260°C, and the temperature of zone 7-8 is 200-260°C, the temperature in zone 9-10 is 200-260°C. The conveying time of the mixture in the screw is 90 seconds;

Embodiment 3

[0042] The weight percentage of polycarbonate PC (L-1250Y) is 64%, polyethylene terephthalate (PBT) is 20%, flame retardant 6%, compatibilizer agent 5%, antioxidant 0.2% , Lubricant 0.5, and mix in a mixer on medium speed for 5 minutes. After being extruded by a twin-screw extruder with a melting temperature of 200-260° C., 4.3% of 988# continuous yarn is added for granulation. The temperature of each section is as follows: the temperature of zone 1-2 of the twin-screw extruder is 200-260°C, the temperature of zone 3-4 is 200-260°C, the temperature of zone 5-6 is 200-260°C, and the temperature of zone 7-8 is 200-260°C, the temperature in zone 9-10 is 200-260°C. The conveying time of the mixture in the screw is 90 seconds;

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Abstract

The invention relates to an environmental-friendly flam retarding glass fiber reinforced polyester alloy material and a preparation method thereof. The polyester alloy material contains 50 to 70 percent makrolan, 10 to 40 percent of polyester, 3 to 5 percent compatilizer, 3 to 6wt percent of flame retarder, 0.1 to 1 percent of antioxidant, 0.3 to 1wt percent of lubricant and 3.5 to 10 percent of glass fiber. The preparation method is that: the makrolan and the linear saturated polyester are adopted as the matrix resin, and the compatilizer, the flame retarder, the antioxidant, the lubricant and the glass fiber are added in, and at last the pelleting process is carried out by a double screw extruder. The polyester alloy material has high surface brightness and excellent resistance to hydrolysis, thereby enlarging the application range of the polyester alloy and being widely used for fields of producing of three-phase electricity meter shells, home appliances and automobile parts, etc.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polycarbonate alloy material that can broaden the application field of pure polycarbonate and can be widely used in the fields of three-phase electric meter casings, household appliances, auto parts and the like and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an amorphous engineering material with excellent impact strength, heat resistance, high transparency, flame retardancy and pollution resistance. However, due to its high molecular rigidity and steric hindrance, its melting temperature is high (270-320°C), it is difficult to process, and it is difficult to produce large thin-walled products, and the residual stress in the product is large, and stress cracking is prone to occur. At the same time, PC is sensitive to notches, and has poor hydrolytic stability and solvent resistance. These defects limit the practical application o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K7/14C08J5/08B29C47/40C08L67/03
Inventor 徐东贺永李小波
Owner ANHUI KEJU NEW MATERIALS
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