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Modifying method for improving compatibility between oxidized graphene and polymethyl methacrylate material

A technology of polymethyl methacrylate and graphene, which is applied in the field of modification to improve the compatibility of graphene oxide and polymethyl methacrylate materials, can solve problems such as poor compatibility, and achieve improved compatibility, The effect of simple modification method

Inactive Publication Date: 2018-12-21
SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to overcome the defect that existing graphene oxide and polymethyl methacrylate material compatibility are poor, provide a kind of modification method that improves the compatibility of graphene oxide and polymethyl methacrylate material; In the present invention, by adding a modifier, the graphene oxide is modified in a targeted manner, so that more groups with better compatibility with polymethyl methacrylate are grafted on the graphene oxide, thereby significantly improving the performance of the graphene oxide. Compatibility with polymethyl methacrylate, suitable for a large amount of graphene oxide added to polymethyl methacrylate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Disperse 10 g of graphene oxide in 400 ml of 50% ethanol aqueous solution to obtain the first suspension;

[0022] (2) Add 2g of 2-methyl-2-propen-1-ol, acrylic acid and alkoxyaluminum hydride with a mass ratio of 2:4:1 to the first suspension, heat to 78°C, and the reaction is complete Afterwards, obtain the second suspension;

[0023] (3) Wash the second suspension with deionized water, and centrifuge at a speed of 1200r / min to obtain a precipitate;

[0024] (4) Vacuum-dry the precipitate at a constant temperature of 45° C. to obtain modified graphene oxide.

Embodiment 2

[0026] (1) Disperse 10 g of graphene oxide in 500 ml of 50% ethanol aqueous solution to obtain the first suspension;

[0027] (2) Add 1g of 2-methyl-2-propen-1-ol, acrylic acid and alkoxyaluminum hydride with a mass ratio of 1:5:1 to the first suspension, heat to 80°C, and the reaction is complete Afterwards, obtain the second suspension;

[0028] (3) Wash the second suspension with deionized water, and centrifuge at a speed of 1500r / min to obtain a precipitate;

[0029] (4) Vacuum-dry the precipitate at a constant temperature of 40° C. to obtain modified graphene oxide.

Embodiment 3

[0031] (1) Disperse 10 g of graphene oxide in 250 ml of 50% ethanol aqueous solution to obtain the first suspension;

[0032] (2) Add 3g of 2-methyl-2-propen-1-ol, acrylic acid and alkoxyaluminum hydride with a mass ratio of 3:3:1 to the first suspension, heat to 75°C, and the reaction is complete Afterwards, obtain the second suspension;

[0033] (3) Wash the second suspension with deionized water, and centrifuge at a speed of 1000r / min to obtain a precipitate;

[0034] (4) Vacuum-dry the precipitate at a constant temperature of 50° C. to obtain modified graphene oxide.

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Abstract

The invention discloses a modifying method for improving compatibility between oxidized graphene and a polymethyl methacrylate material. The modifying method comprises the following steps: (1) dispersing the oxidized graphene into a 50% ethanol water solution to obtain first turbid liquid; (2) adding a modifying agent into the first turbid liquid to obtain second turbid liquid after heating reaction is finished; (3) washing the second turbid liquid by deionized water and centrifuging and separating to obtain precipitate; (4) performing vacuum drying on the precipitate at the constant-temperature to obtain modified oxidized graphene. By means of adding the modifying agent, targeted modifying treatment is performed on the oxidized graphene; thus, more radicals with better compatibility withpolymethyl methacrylate are grafted to the oxidized graphene, the compatibility between the oxidized graphene and polymethyl methacrylate is obviously improved, and the modifying method is suitable for extensive use of the oxidized graphene into polymethyl methacrylate.

Description

technical field [0001] The invention relates to the field of graphene materials, in particular to a modification method for improving the compatibility of graphene oxide and polymethyl methacrylate materials. Background technique [0002] Graphene oxide is the oxidized material of graphene, which has a planar structure similar to graphene. Because the surface contains a large number of active groups, such as hydroxyl (-OH), epoxy [-C(O)C-], carbonyl ( -C=O), carboxyl group (-COOH), ester group (-COO-), etc., so graphene oxide has good compatibility with most materials, and it has similar properties to graphene, which can significantly It is one of the best general-purpose composite modified materials to improve various properties of various materials and is widely used in the field of composite materials. Polymethyl methacrylate material is one of the most widely used polymer materials today, and it is also one of the most modified materials using graphene oxide materials. ...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/04C08L33/12
CPCC08K9/04C08K3/042C08L33/12
Inventor 张慧张羽
Owner SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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