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Preparation method of graphene/TiO2 composite material

A composite material, graphene technology, applied in antifouling/underwater coatings, chemical instruments and methods, polyurea/polyurethane coatings, etc., can solve problems such as improving antibacterial ability, achieve simple process flow, improve photocatalytic efficiency, The effect of controlling production cost

Inactive Publication Date: 2017-08-04
四川嘉宝莉涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The preparation process of this method is relatively simple, the titanium dioxide is evenly distributed in the coating, and there is still room for improvement in the antibacterial ability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:

[0031] Preparation of graphene oxide:

[0032] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid into the flask, and stir for 5-10min; slowly add potassium permanganate, and continue stirring for 15-20min; Stir the container at room temperature for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use deionized Wash with water until neutral, and obtain graphene oxide after ultrasonic stripping;

[0033] Nano-TiO 2 Preparation of:

[0034] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constant temperature...

Embodiment 2

[0045] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:

[0046] Preparation of graphene oxide:

[0047] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid into the flask, and stir for 5-10min; slowly add potassium permanganate, and continue stirring for 15-20min; Stir the container at room temperature for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use deionized Wash with water until neutral, and obtain graphene oxide after ultrasonic stripping;

[0048] Nano-TiO 2 Preparation of:

[0049] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constant temperature...

Embodiment 3

[0053] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:

[0054] Preparation of graphene oxide:

[0055] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid to the flask, and stir for 5-10min; slowly add 4g of potassium permanganate, and continue stirring for 15-20min; then Place the container at room temperature and stir for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use Wash with ion water until neutral, and obtain graphene oxide after ultrasonic stripping;

[0056] Nano-TiO 2 Preparation of:

[0057] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constan...

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Abstract

The invention discloses a preparation method of a graphene / TiO2 composite material. The method comprises the steps of preparation of graphene oxide, preparation of nano TiO2 and preparation of graphene / TiO2 composite material. The prepared composite material has the antibacterial property, and is capable of improving the antibacterial property and the environmental protection performance of a paint when being applied to the paint.

Description

technical field [0001] The present invention relates to a kind of graphene / TiO 2 Methods of preparation of composite materials. Background technique [0002] Due to its unique and excellent properties in both physical and chemical aspects, polyurethane has been widely used as coatings and adhesives. The development of waterborne polyurethane is largely due to its excellent mechanical properties, fire resistance, low toxicity and low environmental hazards, but it has a certain colony growth environment due to hydrophilic groups such as carboxyl groups in its molecular chain. [0003] Chinese patent CN105949989A discloses a water-based UV antibacterial coating and its preparation method, including the following components in parts by weight: polyurethane acrylate dispersion, 60-80 parts; nano-silver sol, 5-15 parts; reactive diluent, 5 parts ~20 parts; photoinitiator, 3~6 parts; leveling agent, 0.1~1 part; dispersant, 0.1~1 part; method of preparation. In the above water-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/14C09D7/12C08G18/48C08G18/34C08G18/75C08G18/67C08G18/66B01J21/18
CPCC09D7/62C09D175/14C08G18/0823C08G18/348C08G18/4833C08G18/672C08G18/755C09D5/14B01J21/18C08K2201/011C08K9/02C08K9/08C08K2003/2241C08K3/04B01J35/39C08G18/6692
Inventor 程俊周雪汤紫俊鲁杰戴宇郭丽缨
Owner 四川嘉宝莉涂料有限公司
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