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Method for preparing flexibilizer by adopting oxidized graphene and application thereof

A toughening agent and graphene technology, applied in the treatment of dyed low-molecular organic compounds, dyed high-molecular organic compounds, fibrous fillers, etc., can solve the problems of heat resistance, low strength and modulus, high odor and toxicity, Problems such as large volume shrinkage, etc., to achieve the effect of convenient modification method, simple preparation method, and cheap and easy-to-obtain raw materials

Active Publication Date: 2014-02-19
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages are: large volume shrinkage during curing, high odor and toxicity during molding, low heat resistance, strength and modulus, and easy deformation, so it is rarely used in products with strong stress
This thinking of the present invention has no bibliographical information

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The main raw materials for preparing the toughening agent in this example are graphene oxide (self-made), polyethylene glycol 200 (industrial grade), thionyl chloride (industrial grade), methacryloyl chloride (industrial grade) and pyridine (industrial grade ).

[0015] The concrete steps of preparing toughening agent are:

[0016] Add 20 kg of polyethylene glycol 200, 300 kg of toluene and 3 kg of graphene oxide into a 1000 liter three-port reaction kettle, turn on the ultrasonic stirring, the stirring rate is 400 rpm, and the ultrasonic frequency is set to 3000 Hz to disperse for 2 hours, drop into 8 kg of thionyl chloride, protected by nitrogen, heated to 80°C, reacted for 36 hours, then heated to 135°C, distilled and condensed toluene and excess thionyl chloride to remove the acid chlorination of graphene oxide, and then mixed with the remaining Add 0.5 kg of pyridine to the solution, stir at a stirring rate of 1200 rpm, under nitrogen protection, and reflux at 85°...

Embodiment 2

[0020] The main raw materials for preparing the toughening agent in this example are graphene oxide (self-made), polyethylene glycol 200 (industrial grade), thionyl chloride (industrial grade), methacryloyl chloride (industrial grade) and pyridine (industrial grade ).

[0021] The concrete steps of preparing toughening agent are:

[0022] Add 25 kg of polyethylene glycol 200, 300 kg of toluene and 5 kg of graphene oxide into a 1000 liter three-port reaction kettle, turn on the ultrasonic stirring, the stirring rate is 500 rpm, and the ultrasonic frequency is set to 3500 Hz to disperse for 3 hours, drop into 10 kg of thionyl chloride, protected by nitrogen, heated up to 85°C, reacted for 48 hours, then heated to 140°C, distilled and condensed toluene and excess thionyl chloride to remove the acid chlorination of graphene oxide, and then mixed with the remaining Add 0.8 kg of pyridine to the solution, stir at a stirring rate of 1300 rpm, under nitrogen protection, and reflux at...

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PUM

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Abstract

The invention discloses a method for preparing a flexibilizer by adopting oxidized graphene and application thereof. The surface of the oxidized graphene is modified through a flexible chain through utilizing the relatively active reactivity of the oxidized graphene and excellent toughness heat resistance and the like of the oxidized graphene, so that the oxidized graphene has better dissolution dispersivity on organic solvents; methacrylic acid is used for grafting to enable the flexibilizer has the capability for being involved in an unsaturated polyester resin crosslinking reaction, so that the finally synthetized flexibilizer has reactivity, can be used for modifying an unsaturated polyester resin material, enables the mechanical property and other properties of the material to be greatly improved as the excellent performance of the graphene can be better integrated in the material. According to the invention, the raw materials for the flexibilizer prepared by adopting the method are easy to obtain, the method is simple, and the mechanical property, thermal property and the like of the resin material can be improved to the comparatively larger extent as long as a small amount of the flexibilizer prepared by adopting the method is added into the unsaturated polyester resin.

Description

technical field [0001] The invention belongs to the technical field of toughening agent preparation, in particular to a method for preparing toughening agent by using graphene oxide and its application. The toughening agent is used for toughening and modifying unsaturated polyester resin materials, which can improve the mechanical properties, impact toughness, bending strength, etc. The performance and anti-deformation ability have also been greatly improved. Background technique [0002] Graphene's special structural form makes it the hardest and thinnest in the world, and it also has strong toughness, electrical conductivity and thermal conductivity. These and its special characteristics make it have a huge development space, which can be applied in many fields such as electronics, aerospace, optics, energy storage, biomedicine, and daily life in the future. The "In-depth Market Research and Investment Strategic Planning Analysis Report of China's Graphene Industry durin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/46C09C3/08C09C3/10C08K9/04C08K3/04C08L67/06C08F292/00
Inventor 郭栋徐旭黄超
Owner GUILIN UNIVERSITY OF TECHNOLOGY