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High-strength epoxy resin composite material and preparation method thereof

A composite material and epoxy resin technology, applied in the field of composite materials, can solve the problems of unfavorable industrial production, long reaction route, and many purification steps, and achieve the effects of outstanding mechanical properties, improved efficiency, and simplified preparation process

Active Publication Date: 2015-03-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods all need to carry out multi-step organic chemical reactions, the reaction route is long, the purification steps are many, and the energy consumption is large, which is not conducive to industrial production; Solvents or reagents, etc., the processing cycle is long, which is not good for the environment

Method used

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  • High-strength epoxy resin composite material and preparation method thereof
  • High-strength epoxy resin composite material and preparation method thereof
  • High-strength epoxy resin composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Triglycidyl p-aminophenol and graphene oxide aqueous dispersion with a mass concentration of 0.1wt% are mixed at room temperature at a weight ratio of 1:250, and mechanically stirred at a speed of 100 rpm at 25°C for 2 minutes, ready to It is observed that the water phase becomes clear, and the graphene oxide is all transferred to the triglycidyl p-aminophenol, and the clear water is poured out, and the mixture is heated at 230° C. in a vacuum oven for 2 minutes to obtain graphene oxide / Triglycidyl p-aminophenol mixture. Add 62.5 parts by weight of triglycidyl p-aminophenol to 14.5 parts by weight of the above mixture for dilution, then add 23 parts by weight of curing agent thiomethyltoluenediamine, and cure at 170 ° C for 3 hours, and then at 200 ° C After curing for 1 hour, a high-strength epoxy resin composite material was obtained. The weight content of graphene oxide in the composite material was measured to be 3wt% by thermogravimetric method. The test temperatu...

Embodiment 2

[0071] Triglycidyl p-aminophenol and graphene oxide aqueous dispersion with a mass concentration of 0.5wt% are mixed at room temperature at a weight ratio of 1:5, and mechanically stirred at a speed of 1000 rpm at 5°C for 4 minutes, ready to It is observed that the water phase becomes clear, and the graphene oxide is all transferred to triglycidyl p-aminophenol, and the clear water is poured out, and the mixture is heated at 170° C. in a vacuum drying oven for 10 minutes to obtain graphene oxide / Triglycidyl p-aminophenol mixture. Add 5 parts by weight of the mixture to 70 parts by weight of triglycidyl p-aminophenol for dilution, then add 25 parts by weight of curing agent thiomethyltoluenediamine, and cure at 170°C for 3 hours, and then cure at 200°C for 1 Hours, a high-strength epoxy resin composite material was obtained. The graphene oxide content in the composite material was measured to be 0.1wt%, the flexural strength was 143 MPa, the flexural modulus was 4.02 GPa, and ...

Embodiment 3

[0073] Triglycidyl p-aminophenol and graphene oxide aqueous dispersion with a mass concentration of 0.25wt% were mixed at room temperature with a weight ratio of 1:10, and after mechanical stirring at a speed of 100 rpm at 25°C for 0.5 minutes, the aqueous phase When it becomes clear, the graphene oxide is all transferred to triglycidyl p-aminophenol, the clear water is poured out, and the mixture is heated to 230°C for spray drying, and the heating time is 2 minutes to obtain graphene oxide / triglycidyl p-Aminophenol mixture. Add 10 parts by weight of the mixture to 60 parts by weight of triglycidyl p-aminophenol for dilution, then add 30 parts by weight of curing agent diaminodiphenyl sulfone, and cure at 170°C for 1 hour, and then cure at 220°C for 1 hour. A high-strength epoxy resin composite material was obtained, in which the mass concentration of graphene oxide was 0.2wt%. It has a flexural strength of 166 MPa, a flexural modulus of 4.65 GPa, and a compressive stren...

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Abstract

The invention provides a high-strength epoxy resin composite material. The composite material is characterized in that a nano carbon oxide material can be quickly transferred from an aqueous phase to a triglycidyl p-aminophenol phase by simple stirring; and a curing agent and the like are added after dewatering and high-temperature treatment, and then the mixture is cured to obtain the high-strength epoxy resin composite material. The nano carbon oxide material is one or more of graphene oxide, a carbon oxide nano tube and oxidative vapor grown carbon fibers. The preparation method is simple, convenient and efficient, chemical modification such as acylating chlorination on the nano carbon oxide material is not needed, any organic solvent is not used, the processing time is short, and the energy consumption is low, so the composite material facilitates industrialization; meanwhile, the nano carbon material is high in content and is dispersed uniformly, and the mechanical properties of the composite material are predominant. The composite material can be used for preparing high-strength, high-wearable and conductive adhesives, molding compounds, coatings and long fiber composite materials, so the composite material has wide application in the fields of aerospace, automobiles, construction reinforcing, power electronics, sports equipment and the like.

Description

technical field [0001] The invention relates to composite materials, in particular to a high-strength epoxy resin composite material, in particular to a nano-carbon material / triglycidyl p-aminophenol composite material and a preparation method thereof. Background technique [0002] Epoxy resins are oligomers containing two or more epoxy groups and taking organic compounds such as aliphatic, alicyclic or aromatic compounds as the skeleton. Due to the active epoxy groups in the molecular structure, they can cross-link with various types of curing agents to form insoluble, infusible thermosetting plastics with a three-way network structure. Epoxy resin has excellent physical and mechanical properties, electrical insulation properties, chemical resistance and bonding properties, and is widely used in various fields of the national economy. Compared with other thermosetting resins, epoxy resins have the most types and grades and different properties, so that epoxy resins can mee...

Claims

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Application Information

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IPC IPC(8): C08G59/32C08K9/00C08K3/04C08K7/24C08K7/06C08L63/00C08L63/02C08L63/04
Inventor 彭懋唐欣磊肖国花
Owner ZHEJIANG UNIV
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