Anti-static and flame-retardant graphene-based polypropylene composite and preparation method thereof

A technology of olefin-based polypropylene and composite materials, which is applied in the field of antistatic and flame-resistant graphene-based polypropylene composite materials and its preparation, can solve the problems of limited popularization, complicated process, and high production cost, and achieve cost reduction and process Simple operation effect

Active Publication Date: 2016-01-27
JIANGNAN GRAPHENE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing graphene-based polypropylene composite materials blindly pursue antistatic standards, which makes the process quite complicated and the production cost is extremely high, thus limiting its popularization and use in large-scale continuous production.

Method used

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  • Anti-static and flame-retardant graphene-based polypropylene composite and preparation method thereof
  • Anti-static and flame-retardant graphene-based polypropylene composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Get 2 mass parts of graphene microflakes, 0.5 mass parts of thermally conductive carbon fiber, 5 mass parts of graphite powder, and 2 mass parts of maleic anhydride grafted polypropylene and mix evenly, add 100 mass parts of polypropylene, and mix again , and finally add 2 parts by mass of antioxidant, 2 parts by mass of plasticizer, and 0.5 parts by mass of coupling agent. Next, the above raw materials were dried at 120° C. for 6 hours, sent to a twin-screw extruder for extrusion, and pelletized with a pelletizer. The temperature of each zone of the screw is: zone 1 190°C, zone 2 200°C, zone 3 200°C, zone 4 200°C, zone 5 200°C, head temperature 190°C, screw speed 20rpm.

[0026] The molecular weight of polypropylene is 80,000-100,000. The thickness of the graphene microflakes is 1nm, and the sheet diameter is 25um. The particle size of graphite powder is 2000 mesh. Antioxidants are monophenols. The plasticizer is methyl phthalate. The coupling agent is KH550.

Embodiment 2

[0028] Get 10 parts by mass of graphene microflakes, 0.1 parts by mass of thermally conductive carbon fiber, 30 parts by mass of graphite powder, and 10 parts by mass of polypropylene grafted with maleic anhydride and mix evenly, add 50 parts by mass of polypropylene, and mix evenly again , and finally add 1 mass part of antioxidant, 5 mass parts of plasticizer, and 0.1 mass part of coupling agent. Next, the above raw materials were dried at 150° C. for 10 hours, fed into a twin-screw extruder for extrusion, and pelletized with a pelletizer. The temperature of each zone of the screw is: zone 1 170°C, zone 2 200°C, zone 3 200°C, zone 4 200°C, zone 5 250°C, head temperature 190°C, screw speed 10rpm.

[0029] The molecular weight of polypropylene is one or more of 100,000-150,000 or 150,000-200,000. The thickness of the graphene microflakes is 3nm, and the sheet diameter is 40um. The particle size of graphite powder is a mixture of 3000 mesh and 3500 mesh. The antioxidant is a...

Embodiment 3

[0031] Get 6 mass parts of graphene microflakes, 0.2 mass parts of thermally conductive carbon fiber, 8 mass parts of graphite powder, 6 mass parts of maleic anhydride grafted polypropylene and mix evenly, add 70 mass parts of polypropylene, and mix again , finally add 5 parts by mass of antioxidant, 1 part by mass of plasticizer, and 1 part by mass of coupling agent. Next, the above raw materials were dried at 130° C. for 8 hours, sent to a twin-screw extruder for extrusion, and pelletized with a pelletizer. The temperature of each zone of the screw is: zone 1 190°C, zone 2 200°C, zone 3 200°C, zone 4 200°C, zone 5 200°C, head temperature 190°C, screw speed 40rpm.

[0032] The molecular weight of polypropylene is 150,000-200,000. The thickness of the graphene microflakes is 2nm, and the sheet diameter is 30um. The particle size of graphite powder is 5000 mesh. The antioxidant is a mixture of hydroquinone and thiobisphenol. The plasticizer is a mixture of butyl phthalate a...

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Abstract

The invention discloses an anti-static and flame-retardant graphene-based polypropylene composite and a preparation method thereof. The composite comprises raw materials in parts by mass as follows: 50-100 parts of polypropylene, 2-10 parts of graphene microchips, 0.1-0.5 parts of heat-conductive carbon fibers, 5-30 parts of graphene powder, 2-10 parts of maleic anhydride grafted polypropylene, 1-5 parts of an antioxidant, 1-5 parts of a plasticizer and 0.1-1 part of a coupling agent. During preparation, the graphene microchips, the heat-conductive carbon fibers, the graphene powder and the maleic anhydride grafted polypropylene are evenly mixed, then the mixture is evenly mixed with a polypropylene matrix again, and finally, all aids are added. The raw materials are dried at the temperature of 120-150 DEG C for 6-10 h, sent into a twin-screw extruder for extrusion and then granulated by a granulator, the composite with anti-static and flame-retardant characteristics is obtained, and the preparation method is continuous and suitable for mass production.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an antistatic and flame-resistant graphene-based polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene is divided into isotactic polypropylene, syndiotactic polypropylene and atactic polypropylene according to the position of the methyl group. The molecular weight is about 80,000 to 200,000. It has the advantages of non-toxic, odorless, tasteless, acid and alkali resistance, and is widely used Household appliances, plastic pipes, high-permeability materials and mechanical parts and other fields. However, the volume resistivity of polypropylene is 10 15 ~10 20 Ω cm, with high insulation, which limits the application of polypropylene in electronics, medical, information and other fields. [0003] Polypropylene (PP) is one of the plastic varieties with high quality, low price and wide application. However, PP i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/04C08K7/06C08K3/04C08K5/13C08K5/12C08K5/544
CPCC08K2201/003C08K2201/011C08K2201/014C08K2201/017C08L23/12C08L2201/02C08L2201/04C08L2203/02C08L2203/20C08L51/06C08K13/04C08K7/06C08K3/04C08K5/13C08K5/12C08K5/544C08K5/5425C08K5/5435C08K5/548C08K5/372
Inventor 李修兵
Owner JIANGNAN GRAPHENE RES INST
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