Flame-resistant PC (Polycarbonate)/PBT (Polybutylene Terephathalate)/PET (Polyethylene Terephathalate) alloy and preparation method thereof

A technology of alloys and flame retardants, which is applied in the field of thermoplastic polymer material modification, flame-retardant PC/PBT/PET alloys of high-performance engineering plastics and its preparation, can solve the problems of high cost and poor flame retardancy of alloys, and achieve High cost performance, improved processing fluidity, and shortened molding cycle

Inactive Publication Date: 2011-04-06
SHENZHEN FUHENG PLASTICS PIGMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems existing in the prior art, such as high cost or poor flame retardancy of the alloy, the present invention proposes a PC / PBT with moderate cost, environmental protection, flame retardancy, dimensional stability, rigidity, toughness and high heat distortion temperature / PET alloy and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Dry PC, PET and PBT at 110°C for 6 hours, and dry the rest of the additives at 70°C for 12 hours.

[0058] The above dried raw materials were weighed according to the proportion, and weighed: 30kg PC, 20kg PET, 23.2kg PBT, 5kg EMA-GMA, 3kg EMA, 0.2kg antioxidant 1010 and 0.2kg 168, 0.4kg lubricant TAF, 10kg Flame retardant brominated epoxy resin, 8kg zinc borate; then mixed in a high speed mixer for 10 minutes.

[0059] Add the above-mentioned uniformly mixed material into the hopper of the twin-screw extruder, and control the temperature of each section at: 210°C in the first zone, 220°C in the second zone, 230°C in the third zone, 240°C in the fourth zone, 250°C in the fifth zone, and 250°C in the sixth zone 240°C, 240°C in the seventh zone, 250°C in the eighth zone, and the temperature of the head is 250°C; the screw speed is controlled at 300rpm, melted, blended and extruded by a twin-screw extruder, water-cooled, air-dried, pelletized, and finally bagged into flame...

Embodiment 2

[0063] Dry PC, PET and PBT at 110°C for 6 hours, and dry the rest of the additives at 70°C for 12 hours.

[0064] The above-mentioned dried raw materials are weighed according to the proportion, and take: 45kg PC, 15kg PET, 15kg PBT, 4kg EMA-GMA, 3kg EMA, 0.2kg antioxidant 1010 and 0.3kg 168, 0.5kg lubricant TAF, 11kg resistance Fuel agent brominated epoxy resin, 3kg antimony trioxide, 3kg zinc borate; then mix in high-speed mixer for 10 minutes.

[0065] Add the above-mentioned uniformly mixed material into the hopper of the twin-screw extruder, and control the temperature of each section at: 200°C in the first zone, 210°C in the second zone, 220°C in the third zone, 230°C in the fourth zone, 240°C in the fifth zone, and 240°C in the sixth zone 250°C, 250°C in the seventh zone, 240°C in the eighth zone, and the temperature of the head is 240°C; the screw speed is controlled at 250rpm, melted, blended and extruded by a twin-screw extruder, water-cooled, air-dried, pelletized, ...

Embodiment 3

[0069] Dry PC, PET and PBT at 120°C for 5 hours, and dry the rest of the additives at 70°C for 12 hours.

[0070] Weigh the above-mentioned dried raw materials according to the proportion, and take: 45kgPC, 15kgPET, 17.8kg PBT, 6kg EMA-GMA, 0.3kg antioxidant 1076 and 0.3kg 168, 0.6kg lubricant PETS, 10kg flame retardant brominated Epoxy resin, 5kg antimony trioxide; then mixed in a high-speed mixer for 10 minutes.

[0071] Add the above-mentioned uniformly mixed material into the hopper of the twin-screw extruder, and control the temperature of each section at: 210°C in the first zone, 220°C in the second zone, 230°C in the third zone, 240°C in the fourth zone, 250°C in the fifth zone, and 250°C in the sixth zone 240°C, 240°C in the seventh zone, 240°C in the eighth zone, head temperature 250°C; the screw speed is controlled at 250rpm, melted, blended and extruded by a twin-screw extruder, water-cooled, air-dried, pelletized, and finally bagged into flame retardant PC / PBT / PET...

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Abstract

The invention relates to a flame-resistant PC (Polycarbonate)/PBT (Polybutylene Terephathalate)/PET (Polyethylene Terephathalate) alloy and a preparation method thereof. The alloy is prepared from the following components in percentage by weight: 30-50 percent of PC, 10-30 percent of PBT, 10-20 percent of PET, 3-8 percent of toughening compatibilizer, 9-15 percent of flame retardant, 4-8 percent of flame-resistant synergistic agent, 0.4-1 percent of antioxidant and 0.4-1 percent of processing aids, wherein the flame retardant is one of bromine brominated epoxy resin, brominated polystyrene and decabromodiphenylethane, the toughening compatibilizer is an ethane-methyl acrylate copolymer and (or) an ethane-methyl acrylate-methacrylic acid glycidyl ester copolymer. The preparation method of the flame-resistant PC/PBT/PET alloy comprises the following steps of: drying raw materials; fully mixing; stirring for 10-20min at a room temperature; and melting, blending and extruding. The alloy phase has excellent comprehensive performance and high performance price ratio, reaches the flame-resistant level of UL94-V0 and can meet the special use requirements of a certain places.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to the modification technology of thermoplastic polymer materials, and relates to a flame-retardant PC / PBT / PET alloy of high-performance engineering plastics widely used in the fields of automobiles, electronic appliances, daily necessities, etc. and its preparation method. [0002] Background technique [0003] Polycarbonate, English name Polycarbonate, referred to as PC. PC is an amorphous, odorless, non-toxic, highly transparent colorless or slightly yellow thermoplastic engineering plastic with excellent physical and mechanical properties, especially excellent impact resistance, high tensile strength, bending strength and compressive strength; Small creep and stable size. PC also has good heat resistance and low temperature resistance, and has stable mechanical properties, dimensional stability, electrical properties and flame retardancy in a wide temperature range, and can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L63/02C08L25/06C08L23/08C08K13/02C08K5/03C08K3/22C08K3/38B29C47/92B29C48/92
CPCB29C48/0022B29C48/04
Inventor 郑辉申应军
Owner SHENZHEN FUHENG PLASTICS PIGMENT
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