Flame-proof glass fibre reinforced polycarbonate material and method for making same

A polycarbonate and glass fiber technology, which is applied in the field of flame-retardant glass fiber reinforced polycarbonate materials and its preparation, can solve the problems of reduction, stability increase, and compatibility reduction between polycarbonate and glass fiber, and achieve the goal of preparing The effect of simple process, high smoothness and controllable production process

Inactive Publication Date: 2008-03-05
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

End-capping agents, release agents or anti-ultraviolet absorbers are added to the pellets circulating in the market. Due to the addition of end-capping agents, the number of chemically active terminal hydroxyl and carboxyl groups decreases, thereby increasing the stability, resulting in polycarbonate The compatibility of ester and glass fiber is reduced, that is, polycarbonate cannot infiltrate glass fiber, and the dispersion of glass fiber in polycarbonate will be irregular, resulting in the generation of floating fibers on the surface of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The weight percent of polycarbonate PC (L-1250Y) is 30%, PC / catalyst is 30%, phenoxytetrabromobisphenol A polycarbonate oligomer (BC-58) 4%, C223A is 5%, Antioxidant 1076 is 0.2%, TAF is 0.8%, mixed in a medium-speed mixer for 5 minutes, then blended with 30% glass fiber, extruded through a twin-screw extruder with a melting temperature of 200--260°C, and pelletized . 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

[0037] The weight percentage of polycarbonate PC (L-1250Y) is 50%, PC / catalyst is 20%, phenoxytetrabromobisphenol A polycarbonate oligomer (BC-58) is 4%, and C22 3A is 5% , antioxidant 1076 is 0.2%, TAF is 0.8%, mixed in a medium-speed mixer for 5 minutes, then blended with 20% glass fiber, and extruded through a twin-screw extruder with a melting temperature of 200--260 ° C to make grain. 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

[0039] The weight percent of polycarbonate PC (L-1250Y) is 70%, PC / catalyst is 10%, phenoxytetrabromobisphenol A polycarbonate oligomer (BC-58) 4%, C223A is 5%, Antioxidant 1076 is 0.2%, TAF is 0.8%, mixed in a medium-speed mixer for 5 minutes, then blended with 10% glass fiber, extruded through a twin-screw extruder with a melting temperature of 200--260°C, and pelletized . 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 present invention discloses one kind of fire retardant glass fiber reinforced polycarbonate material and its preparation process. The fire retardant glass fiber reinforced polycarbonate material is prepared with polycarbonate 10-80 wt%, polycarbonate/catalyst 8-40 wt%, bromide fire retardant 2-10 wt%, toughening agent 4-10 wt%, antioxidant 0.1-1 wt%, lubricant 0.1-5 wt% and glass fiber 5-30 wt%. The addition of the catalyst makes the stable polycarbonate produce chemically active end hydroxyl radical and end carbonyl radical to enhance the compatibility between polycarbonate and long glass fiber. The product of the fire retardant glass fiber reinforced polycarbonate material has high surface smoothness and no floated glass fiber.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant glass fiber reinforced polycarbonate material and a preparation method thereof. [Background technique] [0002] Flame-retardant PC+GF material, major plastic raw material manufacturers have applied for patents. Brands with large circulation and popularity in the market include GE's 500R, 3412R, 3413R, etc., DOW's 4731-8, 4732-8, TEIJIN's GN3410R, GN3420R, etc. All major plastic companies use powder as the base material, add special polycarbonate short fibers, release agents, antioxidants, etc., to make plastic particles with high smoothness and no floating fibers on the surface. Because all major plastic raw material companies produce powders, no end-capping agent is added during the synthesis process, and the terminal hydroxyl and carboxyl groups are active, and the compatibility with special short glass fibers is very good, so there is no floating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K7/14C08J5/08B29C47/40B29C47/92C08K5/13C08K5/10B29C48/40B29C48/92B29C48/95
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92561B29C2948/92895B29C48/95
Inventor 徐东贺永李小波
Owner SHENZHEN KEJU NEW MATERIAL
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