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Graphene oxide/unsaturated polyester composite material and preparation method thereof

A polyester composite material, unsaturated technology, applied in the field of nanomaterials, to achieve the effect of easy operation, easy industrial expansion of production, and strong practicability

Inactive Publication Date: 2012-03-28
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the survey, there is no report at home and abroad about the use of graphene materials to strengthen the composite materials of unsaturated polyester resins.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] A preparation method of graphene oxide / unsaturated polyester composite material, firstly, graphene oxide is directly added to diol, vigorously stirred and ultrasonically dispersed, or a certain amount of graphene oxide aqueous solution and diol mixed solution are carried out. After fractional distillation, a graphene oxide / diol solution with good dispersibility is obtained; then this diol solution is used as a diol raw material, and is mixed with saturated dibasic acid (anhydride), unsaturated dibasic acid (anhydride), Inhibitor and other polycondensation reactions, after the polymerization is completed, vinyl monomers are added to dilute to prepare graphene oxide / unsaturated polyester resin; finally, initiators and accelerators are added to the resin, and graphene oxide / unsaturated polyester resin is prepared after curing and crosslinking. Unsaturated polyester composite. The specific steps include:

[0029] In the first step, 0.1-0.9 parts by weight of graphene oxide...

Embodiment 1

[0042] In the first step, add 40 g of ethylene glycol to 20 g of graphene oxide aqueous solution (weight content is 3%), stir evenly and then ultrasonicate for half an hour to obtain a uniformly dispersed graphene oxide / water / glycol solution; Transfer to a four-neck flask equipped with a thermometer, air guide tube, mechanical stirring and fractionating column, connect to a distillation device, stir and pass nitrogen, heat up to 100-180°C, keep warm for several hours, until anhydrous distills out and obtains a uniform dispersion graphene oxide / glycol solution.

[0043] In the second step, take 35g of the diol liquid obtained in the first step as the diol raw material, and add 25.9 g of maleic anhydride, 39.1g of phthalic anhydride and 0.1g of hydroquinone, raise the temperature to 150-160°C, and keep warm for 0.5~1.5 h, after the end, heat up to 190~210°C for dehydration and esterification, and control the temperature of the fractionating column to ≤105°C; when the acid value ...

Embodiment 2

[0046] In the first step, add 40g of ethylene glycol to the 30g graphene oxide aqueous solution, and the others are the same as in Example 1.

[0047] Second step, the third step are with embodiment 1.

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Abstract

The invention discloses a graphene oxide / unsaturated polyester composite material and a preparation method of the composite material. The composite material comprises the raw materials: dihydric alcohol, graphene oxide, saturated binary acid or acid anhydride, unsaturated binary acid or acid anhydride, vinyl monomer, and normal polymerization inhibitor, initiator and accelerant, wherein the content of the graphene oxide is 0.06-0.5wt%. The preparation method of the graphene oxide / unsaturated polyester composite material comprises the following steps of: adding the graphene oxide into the dihydric alcohol to directly and ultrasonically disperse, or adding the dihydric alcohol into graphene oxide water solution to ultrasonically disperse and remove water in a fractional distillation way so as to obtain graphene oxide / dihydric alcohol solution which is evenly dispersed; performing polycondensation between the obtained graphene oxide / dihydric alcohol solution and the saturated binary acidor acid anhydride, unsaturated binary acid or acid anhydride and polymerization inhibitor with metering ratio, and diluting by adding the vinyl monomer after the polymerization so as to prepare graphene oxide / unsaturated polyester resin; and adding the initiator and the accelerant, and curing and crosslinking to prepare the graphene oxide / unsaturated polyester composite material.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a convenient method for preparing graphene oxide / unsaturated polyester composite materials. Background technique [0002] Unsaturated polyester resin (UPR) has good mechanical properties, electrical properties and chemical resistance. It is the most widely used resin in composite reinforcement materials. Its composite materials are widely used in industries such as ships, automobiles, and building materials. Compared with other thermosetting resins, UPR has low viscosity and is easy to process. It can be cured under normal temperature and pressure, and can also be reacted under heat and pressure; curing does not release small molecules, and can produce relatively uniform products; the price is moderate ;etc. However, the toughness, heat resistance and corrosion resistance of ordinary UPR are not ideal. Therefore, the modification research work such as im...

Claims

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Application Information

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IPC IPC(8): C08L67/06C08K9/00C08K3/04C08G63/91
Inventor 周永红刘承果崔竞方杨晓慧刘红军
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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