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Amino-terminated modified graphene oxide and epoxy nano composite material thereof

A technology on the surface of oxidized stone and graphene, which is applied in the direction of carbon compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of high heat distortion temperature, difficult synthesis of TLCP, difficult processing, etc., so as to improve elongation at break and application Good prospects and the effect of improving mechanical properties

Active Publication Date: 2020-06-19
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis of TLCP is difficult, the production cost is high, and its heat distortion temperature is high, the processing is difficult, and the matching with general epoxy resin is poor.
5. Compared with the traditional rubber toughening modification, CSR particles can improve the toughness of the material while maintaining the heat resistance of the material, but its synthesis and preparation process is complicated, and its particle size distribution needs to be controlled more accurately
However, in the prior art, it is still difficult to improve the mechanical properties and heat resistance of the composite material while improving the toughness of the modified graphene-reinforced epoxy composite material.

Method used

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  • Amino-terminated modified graphene oxide and epoxy nano composite material thereof
  • Amino-terminated modified graphene oxide and epoxy nano composite material thereof
  • Amino-terminated modified graphene oxide and epoxy nano composite material thereof

Examples

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Effect test

Embodiment 1

[0041] Embodiment 1, the preparation of modified graphene oxide of the present invention

[0042] (1) Preparation of intermediate product 1 (C-GO)

[0043] Weigh 1 g of graphene oxide (GO, C / O molar ratio (6.9-7.1): 3, purchased from Beijing Carbon Century Technology Co., Ltd.), and ultrasonically disperse the cells in 300 mL of dry dimethylformamide (DMF). , the dispersed GO suspension was added to a 1000mL three-necked flask, and 4,4'-diaminodicyclohexylmethane (PACM), dimethylepoxypyridine (DMAP) and N,N-bicyclohexyl Hexylcarbodiimide (DCC), and ensure that m(GO):n(PACM):n(DMAP):n(DCC) is 1g:30mmol:10mmol:10mmol. The mixture was reacted at 90°C for 24 hours. After the reaction was completed, it was cooled to room temperature, filtered under reduced pressure using a 0.45 μm polytetrafluoroethylene filter, and washed 5 times with DMF to remove unreacted 4,4'-di Aminodicyclohexylmethane, catalyst, to obtain intermediate product 1 (C-GO).

[0044] (2) Preparation of intermed...

Embodiment 2

[0048] Embodiment 2, the preparation of modified graphene oxide / epoxy nanocomposite material (C-P-M-GO / EP) of the present invention

[0049] According to the formula shown in Table 1, weigh the modified graphene oxide C-P-M-GO, ultrasonically disperse it in the acetone solution at a ratio of 1:1 mg / mL, and add 70 g of TDE-85 epoxy resin to the solution uniformly dispersed after ultrasonic (purchased from Tianjin Jingdong Chemical Composite Material Co., Ltd.), and the solvent was removed by mechanical stirring at 65°C. Weigh 4,4' diaminodiphenylmethane (DDM) and 3,5-diethyl-2,4 toluenediamine (DETDA) mixed curing agent, add modified graphene oxide / TDE-85 epoxy resin In the mixed solution, electric stirring at a constant speed for 15 minutes, so that the curing agent and the resin are fully mixed. The obtained mixture was placed in a vacuum drying oven and dried in vacuum for 30 min to remove the air bubbles introduced during the stirring process. Finally, pour the vacuum-dri...

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Abstract

The invention relates to amino-terminated modified graphene oxide and an epoxy nano composite material thereof. The modified graphene oxide is obtained by replacing -OH groups of carboxyl on the surface of graphene oxide with A groups, and the structure of the A groups is shown in the specification. The invention also discloses an epoxy nano composite material prepared by taking the modified graphene oxide as a raw material. According to the amino-terminated modified graphene oxide prepared by the invention, under the condition of low addition, the storage modulus and the glass-transition temperature of the epoxy nano composite material can be greatly improved, the rigidity and the heat resistance of the composite material can be improved, and meanwhile, the mechanical property, particularly the tensile property, can be remarkably improved, the comprehensive property is excellent, and the application prospect is excellent.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to an amino-terminated modified graphene oxide and an epoxy nanocomposite material thereof. Background technique [0002] As an important thermosetting resin, epoxy resin has excellent physical and mechanical properties, electrical insulation, chemical corrosion resistance, heat resistance and adhesive properties and excellent molding process, and is widely used in chemical industry, automobile, electronics, Machinery and aerospace and other fields. With the rapid development of modern material science and technology, higher and higher requirements are put forward for epoxy resin, and its development trend is developing in the direction of multi-functionality, refinement and high performance. Among them, epoxy resin, as one of the most important high-performance composite material matrix resins, has extremely important application value in the aerospace field,...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/04C08L63/00C01B32/198
CPCC08K9/04C08K2201/011C08L2201/08C08K3/042C01B32/198C08L63/00
Inventor 邹华维张雪琴梁梅
Owner SICHUAN UNIV
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