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Graphite phase carbon nitride/graphene oxide heterojunction-epoxy acrylate composite material as well as preparation method and application thereof

A graphite phase carbon nitride, epoxy acrylate technology, applied in the coating and other directions, can solve the problems of low hardness, poor wear resistance, low mechanical and thermal properties, etc., achieve excellent hardness, enhance wear resistance, improve The effect of comprehensive performance

Active Publication Date: 2017-05-10
佛山市高明绿化纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the coatings of pure organic systems have inevitable disadvantages, such as low hardness, poor wear resistance, low mechanical and thermal properties, etc.

Method used

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  • Graphite phase carbon nitride/graphene oxide heterojunction-epoxy acrylate composite material as well as preparation method and application thereof
  • Graphite phase carbon nitride/graphene oxide heterojunction-epoxy acrylate composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Preparation of graphite phase carbon nitride: put 50g of melamine powder in a semi-closed alumina crucible, raise the temperature of the crucible to 230°C and keep it warm for 45min, continue to heat up to 330°C and keep it warm for 100min, and finally raise the temperature to 530°C and keep it warm 100min. Naturally cool to room temperature after the reaction, the obtained solid is vacuum-dried at 65°C for 24 hours, and the solid is sieved through a 300-mesh sieve to obtain graphite phase carbon nitride; the average particle size of the obtained graphite phase carbon nitride is 1-2 μm.

[0030] (2) Graphene oxide (purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, purity > 97wt.%, particle size 0.5-5 μm, thickness 0.55-2.0 nm) was mixed with deionized water to prepare 1 g / L solution. Take 300mL graphene oxide solution, add 5g graphitic carbon nitride, and ultrasonically react for 8h (400W). After the reaction was completed, the preci...

Embodiment 2

[0034](1) Preparation of graphite phase carbon nitride: put 55g of melamine powder in a semi-closed alumina crucible, raise the temperature of the crucible to 240°C and keep it warm for 60min, continue to heat up to 340°C and keep it warm for 120min, and finally raise the temperature to 540°C and keep it warm 120min. Naturally cool to room temperature after the reaction, the obtained solid is vacuum-dried at 60°C for 24 hours, and the solid is sieved through a 300-mesh sieve to obtain graphite phase carbon nitride; the average particle size of the obtained graphite phase carbon nitride is 1-2 μm.

[0035] (2) Graphene oxide (purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, purity > 97wt.%, particle size 0.5-5 μm, thickness 0.55-2.0 nm) was mixed with deionized water to prepare 1.2 g / L The solution. Take 350mL graphene oxide solution, add 6g graphitic carbon nitride, and ultrasonically react for 8.5h (400W). After the reaction, the precipitate ...

Embodiment 3

[0039] (1) Preparation of graphite phase carbon nitride: put 60g of melamine powder in a semi-closed alumina crucible, raise the temperature of the crucible to 250°C and keep it warm for 75min, continue to heat up to 350°C and keep it warm for 140min, and finally raise the temperature to 550°C and keep it warm 140min. Naturally cool to room temperature after the reaction, place the obtained solid at 80° C. for 36 hours in vacuum, and pass the solid through a 300-mesh sieve to obtain graphite phase carbon nitride; the average particle size of the obtained graphite phase carbon nitride is 1-2 μm.

[0040] (2) Graphene oxide (purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences, purity > 97wt.%, particle size 0.5-5 μm, thickness 0.55-2.0 nm) was mixed with deionized water to prepare 1.4 g / L The solution. Take 380mL graphene oxide solution, add 7g graphitic carbon nitride, and ultrasonically react for 9h (400W). After the reaction was completed, the pr...

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Abstract

The invention belongs to the technical field of coatings and discloses a graphite phase carbon nitride / graphene oxide heterojunction-epoxy acrylate composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically mixing graphene oxide and graphite phase carbon nitride for 8-12 hours, centrifuging after the reaction is ended, and drying the solid product so as to obtain graphite phase carbon nitride / graphene oxide; adding a silane coupling agent and the graphite phase carbon nitride / graphene oxide into absolute ethyl alcohol, stirring to react at a normal temperature in a reflux state for 2-4 hours, centrifuging after the reaction is ended, and drying and screening the solid product so as to obtain modified graphite phase carbon nitride / graphene oxide; and finally, uniformly mixing the graphite phase carbon nitride / graphene oxide with epoxy acrylate, thereby obtaining the graphite phase carbon nitride / graphene oxide heterojunction-epoxy acrylate composite material. The composite material can be applied to ultraviolet-curable coatings, and the obtained coating has excellent hardness, thermal performance, mechanical performance and photocatalytic performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a graphite phase carbon nitride / graphene oxide heterojunction-epoxy acrylate composite material and its preparation and application. Background technique [0002] UV curing coating is a new type of coating with high efficiency, environmental protection and energy saving that appeared in the 1960s. Its advantages lie in fast curing speed, less use of volatile solvents, high energy saving efficiency, and automatic curing process operation. It is suitable for continuous production. Big production. It meets the environmental protection and energy-saving requirements that are increasingly valued worldwide, and is known as a new generation of environmentally friendly and energy-saving products, and has been rapidly developed in applications in various industries (Chen Z, Webster DC. Study of the effect of hyperbranched polyols on cationic UV curable coating properties [J]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D7/12
Inventor 刘惠娣张劲林
Owner 佛山市高明绿化纳新材料科技有限公司
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