Preparation method of polypropylene-grafted graphene oxide composite material

A technology of polypropylene grafting and composite materials, which is applied in the field of preparation of polypropylene grafted graphene oxide composite materials by solution blending method, which can solve the problems of reducing the related properties of composite materials and high requirements for reducing agents, and achieve the improvement of tensile strength , Improve the effect of dispersion

Inactive Publication Date: 2016-10-12
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Wang Ke et al. used the method of adding reducing groups in the composite to improve the dispersion performance of graphene in the com

Method used

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  • Preparation method of polypropylene-grafted graphene oxide composite material

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Experimental program
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Example Embodiment

[0016] Example 1:

[0017] 0.1 g of graphene oxide was added to 10 mL of toluene solution, and dispersed under ultrasound for 30 minutes at a power of 300 W. After adding 0.1 mL of APTES solution, the mixture was refluxed and stirred for 8 hours before vacuum filtration was performed. After washing the obtained solid with dichloromethane, it was dried under vacuum at 50°C for 4 hours; the modified graphene peroxide was dissolved in 100 mL xylene solution and ultrasonicated with 300W power for 2 hours, weighed 4.95 g branched polypropylene and added Then, heat to reflux at 120°C. When the added material is completely dissolved, react at a constant temperature for 2 hours; continue to add 4.95g polypropylene and 100mL xylene to continue the reaction until all is dissolved, vacuum extract the mixed solution, and place the obtained material in a vacuum at 40°C After drying for 2 hours under the conditions, the powder of polypropylene grafted graphene oxide can be obtained.

Example Embodiment

[0018] Example 2:

[0019] 0.2 g of graphene oxide was added to 20 mL of toluene solution, and dispersed by ultrasonic for 30 minutes at a power of 300 W. After adding 0.2 mL of APTES solution, the mixture was refluxed and stirred for 8 hours before vacuum filtration. After washing the obtained solid with dichloromethane, it was dried under vacuum at 50℃ for 4 hours; the modified graphene peroxide was dissolved in 100 mL xylene solution, and sonicated with 300W power for 2 hours, weighed 4.9 g branched polypropylene and added Then, heat to reflux at 120°C. When the added material is completely dissolved, react at a constant temperature for 2 hours; continue to add 4.9g polypropylene and 100mL xylene to continue the reaction until all is dissolved, vacuum extract the mixed solution, and place the obtained material in a vacuum 40 After drying at ℃ for 2 hours, the powder of polypropylene grafted graphene oxide can be obtained.

Example Embodiment

[0020] Example 3:

[0021] 0.5 g of graphene oxide was added to 50 mL of toluene solution, and dispersed under ultrasound for 30 minutes under 300 W power. After 0.5 mL of APTES solution was added, the mixture was refluxed and stirred for 8 hours and then vacuum filtered. After washing the obtained solid with dichloromethane, it was dried under vacuum at 50℃ for 4 hours; the modified graphene peroxide was dissolved in 100mL xylene solution, and ultrasonic treatment with 300W power for 2 hours, weighed 4.25g branched polypropylene and added After that, heat to reflux at 120°C. When the added material is completely dissolved, react at a constant temperature for 2 hours; continue to add 4.25g polypropylene and 100mL xylene to continue the reaction until all is dissolved, vacuum extract the mixed solution, and place the obtained material in a vacuum at 40°C After drying for 2 hours under the conditions, the powder of polypropylene grafted graphene oxide can be obtained.

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Abstract

The invention relates to a method for preparing a polypropylene-grafted graphene oxide composite material by adopting a solution method. 3-aminopropyltriethoxysilane (APTES) is adopted to perform surface modification on graphene oxide and then is subjected to blending reaction with grafted polypropylene and polypropylene; by utilization of an effect anhydride in the maleic-anhydride grafted polypropylene (MAPP) formed by grafting amino serving as a functional group of modified graphene with maleic-anhydride, the dispersity of the graphene oxide in the composite material is greatly improved. The tensile strength of the composite material prepared by the method is improved by 20 percent or higher compared with that of the polypropylene and the grafted polypropylene.

Description

Technical field [0001] The invention belongs to the field of functional material preparation, and specifically relates to a polypropylene grafted graphene oxide composite material prepared by a solution blending method. The graphene oxide is functionalized and then composited with branched modified polypropylene, which can greatly improve the unstable performance of graphene in the composite material due to easy aggregation; by controlling the content of graphene in the composite material , It is possible to obtain a polypropylene / graphene oxide composite material with significantly improved tensile strength. Background technique [0002] Polypropylene (PP) material has a wide range of applications in industry and life because of its low price and easy processing and molding. However, the instability of mechanical and thermal properties greatly limits its in-depth application in related fields. How to modify the properties of existing polypropylene materials by combining with ma...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08K9/06C08K3/04
CPCC08L23/12C08L51/06C08K9/06C08K3/04
Inventor 何丹农卢静张彦鹏尹桂林葛美英金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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