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Photocuring joint coating provided with graphene filler and preparing method thereof

A graphene, light-curing technology, applied in anti-corrosion coatings, polyester coatings, polyether coatings, etc., can solve problems such as poor surface curing and inhibition

Active Publication Date: 2015-12-23
泉州职业技术大学
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Problems solved by technology

[0003] Light-curing coatings, also known as photosensitive coatings, use ultraviolet light as the energy source for coating curing. Pigments and fillers; light-curing coatings have been widely used in the coatings industry because of their high coating efficiency and environmental friendliness. Compared with solvent-based coatings, light-curing coatings have fast curing speed, no volatile solvents, It has the characteristics of energy saving, low cost, and automatic production. Its disadvantage is that the curing process of free radical photocuring coatings is inhibited by oxygen, and the surface curing is poor.

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  • Photocuring joint coating provided with graphene filler and preparing method thereof
  • Photocuring joint coating provided with graphene filler and preparing method thereof

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Embodiment Construction

[0024] A kind of is the preparation method of the light-cured sealing coating of graphene filler, comprises the following steps:

[0025] (1) Graphene is dissolved in a solvent, prepared into a suspension in which graphene accounts for 0.5%-5% of the total mass of the solution, and ultrasonically dispersed by an ultrasonic cell disruptor with a frequency of 15-20KHz to obtain a graphene suspension.

[0026] (2) Add oligomers, reactive diluents and dispersants to the solution obtained in step (1) while stirring, and then use an ultrasonic cell cleaner with a frequency of 30-40KHz for 30-60 minutes.

[0027] (3) Add a photoinitiator to the solution prepared in step (2) while stirring magnetically, and stir thoroughly until all the solvent evaporates to obtain a photocurable sealing coating with graphene filler.

[0028] To further improve the above technical solution: the solvent is one or a mixture of ethanol, acetone and tetrahydrofuran.

[0029] In pipeline jointing, the met...

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Abstract

The invention relates to an anti-corrosive coating for metal, in particular to a photocuring joint coating provided with graphene filler and a preparing method thereof. The photocuring pipeline joint coating is composed of a low polymer, a reactive diluents (monomer), a photoinitiator, a dispersing agent and graphene, wherein graphene is evenly dispersed in the photocuring joint coating and accounts for 0.5-5% of the total mass of the composite coating. The photocuring joint coating has the advantages of being high in curing speed, high in production efficiency, free of volatile solvent, safe, free of pollution, low in energy consumption, high in tenacity, high in adhesive force, high in water resistance, high in hardness, excellent in corrosion resistance and the like and can be used for mouth repairing and mending during pipeline site operation, corrosion resistance of oil gas conveying pipelines and the like.

Description

technical field [0001] The invention relates to a metal anti-corrosion coating, in particular to a light-cured pipeline joint coating with graphene filler and a preparation method thereof. technical background [0002] With the wide application of anti-corrosion technology for oil and gas long-distance pipelines, the failure of pipeline welds and joints at damaged parts has gradually been exposed, especially when some pipelines have been soaked in water for a long time, the failure of water pipeline joints is particularly serious; according to some foreign data According to statistics, the anticorrosion layer of long-distance pipelines mostly adopts the sealing form of epoxy primer heat shrinkable tape. Stress failure and poor sealability of heat-shrinkable joints. These problems are mainly caused by the slippage, fracture, rearrangement, and orientation of molecular segments in the molecules inside the joint material under the action of continuous stress, which causes plast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D175/14C09D167/06C09D171/00C09D4/02C09D4/06C09D7/12C09D5/08
Inventor 王树立刘波饶永超赵书华康甜甜陈玉代文杰常凯郑亚星刘倩
Owner 泉州职业技术大学
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