A kind of catalyzed charcoal high-efficiency halogen-free flame-retardant pc/abs mixture and preparation method thereof

A mixture and high-efficiency technology, which is applied in the field of catalytic carbonization, high-efficiency halogen-free flame-retardant PC/ABS mixture and its preparation, can solve the problem of difficult to overcome the ignition effect of candle wick, achieve good compatibility and dispersibility, improve resistance The effect of improving combustion performance, improving density and quality

Active Publication Date: 2020-02-18
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, it can be seen that the existing flame retardant technology is difficult to overcome the wick ignition effect brought by carbon fiber fillers. Therefore, the development of high-efficiency halogen-free flame retardant carbon fiber reinforced PC / ABS mixture has important social significance and huge economic benefits.

Method used

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  • A kind of catalyzed charcoal high-efficiency halogen-free flame-retardant pc/abs mixture and preparation method thereof
  • A kind of catalyzed charcoal high-efficiency halogen-free flame-retardant pc/abs mixture and preparation method thereof
  • A kind of catalyzed charcoal high-efficiency halogen-free flame-retardant pc/abs mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The catalyzed charcoal-forming halogen-free flame-retardant carbon fiber reinforced PC / ABS mixture of the present embodiment is mainly made of the following raw materials in weight percentage: PC resin (59%), ABS resin (14.7%), chopped carbon fiber (15%), EMA (5%), RDP (5%), phenoxyphosphazene (0.5%), zirconium phosphate modified triazine silicon-containing char former (0.5%), NOR116 (0.3%).

[0054] Mix PC, ABS, EMA, RDP, NOR116, phenoxyphosphazene and zirconium phosphate-modified triazine silicon-containing carbon formers at high speed for 20 minutes and then put them into the main feeding bin of the twin-screw extruder. The main feeding screw speed 25rpm, the chopped carbon fiber is placed in the side feeding bin of the twin-screw extruder. The control temperature (eight sections from the feeding port to the nozzle outlet) is 200°C, 220°C, 220°C, 230°C, 235°C, 245°C, 245°C, 250°C, and the vacuum pressure of the barrel in the twin-screw extrusion process should be Co...

Embodiment 2

[0056] The catalyzed charcoal-forming halogen-free flame-retardant carbon fiber reinforced PC / ABS mixture of the present embodiment is mainly made of the following raw materials in weight percentage: PC resin (67%), ABS resin (16.7%), chopped carbon fiber (5%), EMA (5%), RDP (5%), phenoxyphosphazene (0.5%), zirconium phosphate modified triazine silicon-containing char former (0.5%), NOR116 (0.3%).

[0057] Mix PC, ABS, EMA, RDP, NOR116, phenoxyphosphazene and zirconium phosphate-modified triazine silicon-containing carbon formers at high speed for 20 minutes and then put them into the main feeding bin of the twin-screw extruder. The main feeding screw speed 25rpm, the chopped carbon fiber is placed in the side feeding bin of the twin-screw extruder. The control temperature (eight sections from the feeding port to the nozzle outlet) is 200°C, 220°C, 220°C, 230°C, 235°C, 245°C, 245°C, 250°C, and the vacuum pressure of the barrel in the twin-screw extrusion process should be Con...

Embodiment 3

[0059] The catalyzed charcoal-forming halogen-free flame-retardant carbon fiber reinforced PC / ABS mixture of the present embodiment is mainly made of the following raw materials in weight percent: PC resin (37%), ABS resin (37%), chopped carbon fiber (15%), EMA (5%), RDP (5%), phenoxyphosphazene (0.5%), zirconium phosphate modified triazine silicon-containing char former (0.5%), NOR116 (0.3%).

[0060] Mix PC, ABS, EMA, RDP, NOR116, phenoxyphosphazene and zirconium phosphate-modified triazine silicon-containing carbon formers at high speed for 20 minutes and then put them into the main feeding bin of the twin-screw extruder. The main feeding screw speed 25rpm, the chopped carbon fiber is placed in the side feeding bin of the twin-screw extruder. The control temperature (eight sections from the feeding port to the nozzle outlet) is 200°C, 220°C, 220°C, 230°C, 235°C, 245°C, 245°C, 250°C, and the vacuum pressure of the barrel in the twin-screw extrusion process should be Control...

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Abstract

The invention discloses a catalytic charing high efficiency halogen-free flame retardant PC (Polycarbonate) / ABS (Acrylonitrile Butadiene Styrene) mixture and a preparation method thereof. The mixtureis prepared from the following raw materials in percentage by mass: 37 to 67 percent of PC resin, 14 to 37 percent of ABS resin, 0 to 5 percent of compatibilizer, 0.1 to 0.5 percent of antioxidant, 5to 15 percent of chopped carbon fibers, 3 to 5 percent of organophosphate flame retardant, 0.5 to 3 percent of phenoxyposphazene and 0 to 1 percent of zirconium phosphate modified triazine silicon-based charring agent. The preparation method comprises the following steps: drying the raw materials except the chopped carbon fibers and fully mixing the raw materials in a high-speed mixer; then addingthe raw materials into a charging barrel of a co-rotating parallel twin-screw extruder through a main feeding bin; adding the chopped carbon fibers through a side feeding mode, carrying out melt extrusion and granulating. The mixture prepared by the preparation method disclosed by the invention has the advantages of high strength, good flame retardant performance, low addition amount of a flame retardant and the like; the mixture can be used in the fields of ultra-thin notebook casings, high-speed railway interior, unmanned aerial vehicle shells and other high-end electrical appliances.

Description

technical field [0001] The invention relates to the field of enhanced flame-retardant modification of PC / ABS alloys, in particular to a high-efficiency halogen-free flame-retardant carbon fiber-reinforced PC / ABS mixture catalyzed into carbon and a preparation method thereof. Background technique [0002] Carbon fiber reinforced PC / ABS has the advantages of small specific gravity, high specific strength, high rigidity, and high modulus, which can meet the stringent requirements for density and strength of ultra-thin notebook computers and drones. However, carbon fiber reinforced PC / ABS also has the defect of poor flame retardancy, and there is a large fire hazard when used, so it must be modified for flame retardancy. At present, the flame retardants commonly used in PC / ABS alloys are mainly phosphorus-based flame retardants, such as organic phosphate flame retardants, red phosphorus, and ammonium polyphosphate. However, when phosphorus-based flame retardants are used alone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08K13/06C08K7/06C08K9/02C08K5/3492C08K5/523C08K5/5399
CPCC08L69/00C08L2201/02C08L2201/22C08L55/02C08K13/06C08K7/06C08K9/02C08K5/3492C08K5/523C08K5/5399
Inventor 赖学军周泉曾幸荣李红强周海云黄焕坤徐迎宾
Owner SOUTH CHINA UNIV OF TECH
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