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Method for modifying epoxy resin through amino-terminated hyperbranched polymer-grafted graphene oxide

A hyperbranched polymer and amino-terminated hyperbranched technology, applied in the field of material chemistry, can solve problems such as pollution, high cost, and complicated operation process, and achieve the effects of simple process, easy operation, and simple preparation process

Inactive Publication Date: 2013-09-18
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there are many methods for modifying epoxy resin at present, most of them have complicated operation process, pollution phenomenon, and high cost, and the concept of introducing hyperbranched polymer while using graphene to modify epoxy resin is also difficult. never used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add 0.5g of graphite oxide and 200ml of distilled water into a 250ml beaker, and disperse for 30min in an ultrasonic environment to form a uniformly dispersed graphene oxide mixture.

[0022] (2) Weigh 10ml of triethylenetetramine, place it in a 250ml three-necked flask equipped with a stirrer, thermometer, condenser and dropping funnel, add N,N-dimethylformamide and stir to make triethylenetetramine just Until it is completely dissolved, heat up to 60°C and slowly add a mixture of 2.3mL methyl methacrylate and 5.0mL methanol dropwise for 2 hours, continue to heat up to 100°C, and react for 8 hours to obtain a light yellow viscous Transparent amino-terminated hyperbranched polymer HBP-NH 2 ; Then add 5mL of the graphene oxide mixture prepared in step (1) and 8g of NaOH, and adjust the pH value to 7, continue ultrasonic dispersion at 100°C for 6 hours, distill out the methanol and cool to room temperature, add a large amount of water to make The product was precipit...

Embodiment 2

[0026] (1) Add 0.5g of graphite oxide and 200ml of distilled water into a 250ml beaker, and disperse for 30min in an ultrasonic environment to form a uniformly dispersed graphene oxide mixture.

[0027] (2) Weigh 10ml of triethylenetetramine, place it in a 250ml three-necked flask equipped with a stirrer, thermometer, condenser and dropping funnel, add N,N-dimethylformamide and stir to make triethylenetetramine just Until it is completely dissolved, heat up to 60°C and slowly add a mixture of 2.3mL methyl methacrylate and 5.0mL methanol dropwise for 2 hours, continue to heat up to 100°C, and react for 8 hours to obtain a light yellow viscous Transparent amino-terminated hyperbranched polymer HBP-NH 2 ; Then add 5mL of the graphene oxide mixture prepared in step (1) and 8g of NaOH, and adjust the pH value to 7, continue ultrasonic dispersion at 100°C for 6 hours, distill out the methanol and cool to room temperature, add a large amount of water to make The product was precipit...

Embodiment 3

[0031] (1) Add 0.5g of graphite oxide and 200ml of distilled water into a 250ml beaker, and disperse for 30min in an ultrasonic environment to form a uniformly dispersed graphene oxide mixture.

[0032] (2) Weigh 10ml of triethylenetetramine, place it in a 250ml three-necked flask equipped with a stirrer, thermometer, condenser and dropping funnel, add N,N-dimethylformamide and stir to make triethylenetetramine just Until it is completely dissolved, heat up to 60°C and slowly add a mixture of 2.3mL methyl methacrylate and 5.0mL methanol dropwise for 2 hours, continue to heat up to 100°C, and react for 8 hours to obtain a light yellow viscous Transparent amino-terminated hyperbranched polymer HBP-NH 2; Then add 5mL of the graphene oxide mixture prepared in step (1) and 8g of NaOH, and adjust the pH value to 7, continue ultrasonic dispersion at 100°C for 6 hours, distill out the methanol and cool to room temperature, add a large amount of water to make The product was precipita...

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Abstract

The invention discloses a method for modifying epoxy resin through amino-terminated hyperbranched polymer-grafted graphene oxide. The method comprises the following steps: preparing graphite oxide from flake graphite utilized as a raw material by adopting a Hummers oxidation method, adding the graphite oxide into a beaker, adding distilled water and forming a graphene oxide mixed solution by virtue of ultrasonic waves; stirring for dissolving triethylene tetramine in N,N-dimethylformamide, raising the temperature to 55-65 DEG C, dropwise adding a mixed solution of methyl methacrylate and methanol, continuously raising the temperature to 80-120 DEG C and reacting for 6-10 hours to get an amino-terminated hyperbranched polymer; further adding the graphene oxide mixed solution and NaOH, regulating the pH value to be 5-10, performing ultrasonic dispersion for 2-8 hours at the temperature of 80-120 DEG C, evaporating the methanol, cooling to room temperature, adding water to precipitate a product, drying to get the amino-terminated hyperbranched polymer-grafted graphene oxide capable of toughening and modifying the epoxy resin. The method disclosed by the invention is wide in raw material source, simple in preparation process, pollution-free, lower in cost and beneficial to industrial large-scale production.

Description

Technical field: [0001] The technical field of the invention is the field of material chemistry, in particular to a method for grafting an amino-terminated hyperbranched polymer to a graphene oxide-modified epoxy resin. Background technique: [0002] Graphene is composed of a dense layer of carbon atoms wrapped in a honeycomb crystal lattice. It is a typical two-dimensional nanomaterial. The thickness of this graphene crystal film is only 0.335nm, which is only 1 / 100,000th that of hair. , this special structure contains rich and novel physical phenomena, which makes graphene exhibit many excellent properties. It is the material with the highest strength known in the world. The basic unit of three-dimensional carbon nanotubes and three-dimensional graphite), the single-layer graphite after chemical functionalization has good solubility in water and organic solvents, which is conducive to its uniform dispersion and molding processing. Currently, graphene-enhanced polymer mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/14C08L51/10C08L63/00
Inventor 刘括陆绍荣徐旭郭栋罗崇禧李善荣
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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