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Carbon-fiber-filling-reinforced flame-retardant PC (polycarbonate) composite material

A composite material and carbon fiber technology, which is applied in the field of carbon fiber-filled reinforced flame-retardant PC composite materials, can solve the problems of poor processability, insufficient flame retardancy, and easy stress cracking, and achieve good processability, low cost, and excellent electrical properties. Effect

Inactive Publication Date: 2015-06-03
QINGDAO JIAYIYANG IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although pure PC has a certain flame retardancy with an oxygen index of 21% to 24%, but with the increasing market competition and higher requirements for flame retardancy, the flame retardancy of PC itself is insufficient. In order to adapt to product development and According to the market demand, it is necessary to modify the flame retardant of PC
In addition, pure PC also has disadvantages such as poor processing performance, easy stress cracking, notch impact and poor low temperature toughness, which limit its application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A carbon fiber-filled reinforced flame-retardant PC composite material, the components of which are: PC 75%, carbon fiber 10%, bisphenol A-bis(diphenyl phosphate) (BDP) 10%, anti-dripping 0.5% additive, 3% random copolymer of ethylene-methyl acrylate-glycidyl methacrylate, hindered phenolic antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:2 0.3%, pentaerythritol stearate (PETS) 1.2%. Wherein, the PC is a bisphenol A type aromatic polycarbonate with a weight average molecular weight of 20000-40000 g / mol. The carbon fiber is a carbon fiber whose surface has undergone gas-liquid double-effect oxidation treatment. The treatment method is: place the carbon fiber in a nitric acid solution with a mass fraction of 60% to 70%, and immerse it at 75°C to 90°C for 10 to 60 minutes , then vacuum filter to remove the acid solution, and rinse with deionized water until neutral, after drying, put it in the reaction kettle, and use ozone with a concentration of 0.5-1...

Embodiment 2

[0023] A carbon fiber-filled reinforced flame-retardant PC composite material, the components of which are: PC 77%, carbon fiber 8%, brominated polycarbonate oligomer (brominated PC) flame retardant 15%, anti- Dropping agent 0.5%, random copolymer of ethylene-methyl acrylate-glycidyl methacrylate 2%, hindered phenolic antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:2 Compound 0.5%, pentaerythritol stearate (PETS) 1%. Wherein, the PC is a bisphenol A type aromatic polycarbonate with a weight average molecular weight of 20000-40000 g / mol. The carbon fiber is a carbon fiber whose surface has undergone gas-liquid double-effect oxidation treatment. The treatment method is: place the carbon fiber in a nitric acid solution with a mass fraction of 60% to 70%, and immerse it at 75°C to 90°C for 10 to 60 minutes , then vacuum filter to remove the acid solution, and rinse with deionized water until neutral, after drying, put it in the reaction kettle, and use ozone w...

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Abstract

The invention discloses a carbon-fiber-filling-reinforced flame-retardant PC (polycarbonate) composite material which is composed of the following components in percentage by mass: 60-85% of PC, 5-10% of carbon fiber, 5-15% of flame retardant, 0.1-1% of anti-dripping agent, 1-4% of compatilizer, 0.1-1% of antioxidant and 0.1-2% of lubricant. Compared with the prior art, the PC composite material has the advantages of high strength, high modulus, high stability, favorable electric properties, favorable flame retardancy (Grade UL94V-0), low cost, favorable processability and the like, and can be widely used in the fields of automobiles, electronic and electric appliances, chemical industry, military affairs, medical appliances, construction materials, aerospace and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a carbon fiber-filled reinforced flame-retardant PC composite material. Background technique [0002] Polycarbonate (PC) is a thermoplastic engineering plastic with excellent comprehensive properties. It has outstanding impact resistance, creep resistance and dimensional stability. It can maintain high mechanical strength in a high temperature range and is non-toxic. , with excellent dielectric properties, is the engineering plastic with the fastest growth and the largest production capacity in recent years. Although pure PC has a certain flame retardancy with an oxygen index of 21% to 24%, but with the increasing market competition and higher requirements for flame retardancy, the flame retardancy of PC itself is insufficient. In order to adapt to product development and In order to meet the market demand, it is necessary to modify the flame retardant of PC. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/06C08K9/02C08K7/06C08K5/134C08K5/526B29C47/92B29C48/92
CPCC08L69/00C08J5/06C08J2369/00C08L2201/02C08L2205/025C08L2205/035C08L2205/08C08L23/0884C08L27/18C08L25/06C08K13/06C08K9/02C08K7/06C08K5/523C08K5/526C08K5/1345C08K5/103
Inventor 不公告发明人
Owner QINGDAO JIAYIYANG IND & TRADE