Anti-pollution-flashover superhydrophobic paint, and preparation method and application thereof

A super-hydrophobic coating and anti-pollution flashover technology, applied in the field of coatings, can solve problems such as accelerating the process of dirty wetting, increasing the accumulation of pollution on the surface of power equipment, and reducing the safety level of external insulation of power transmission and transformation equipment, achieving good self-repair effect, The effect of ensuring long-term working performance and excellent water-repellent performance

Inactive Publication Date: 2017-02-08
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in recent years, large-scale smog weather has frequently occurred in densely populated and industrially dense cities in the central and eastern parts of my country, and its impact on power transmission and transformation equipment has attracted more and more attention. Smog weather has increased the accumulation of pollution on the surface of power equipment, and at the same time accelerated Dirty wetting process significantly reduces the safety level of external insulation of power transmission and transformation equipment

Method used

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  • Anti-pollution-flashover superhydrophobic paint, and preparation method and application thereof
  • Anti-pollution-flashover superhydrophobic paint, and preparation method and application thereof
  • Anti-pollution-flashover superhydrophobic paint, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) According to the mass ratio of nano-silica particles, polydimethylsiloxane and n-heptane to 4:40:10, add nano-silica particles to n-heptane containing polydimethylsiloxane After stirring mechanically at 100r / min for 15 minutes in alkanes, ultrasonication was performed at an ultrasonic frequency of 1kHz for 5 minutes to disperse the nano-silica particles evenly, and after the n-heptane was volatilized, nano-silica particles with low surface energy were obtained. Wherein, the n-heptane containing polydimethylsiloxane is prepared by mixing dimethylsiloxane and n-heptane and mechanically stirring at 100 r / min for 10 minutes.

[0029] (2) The mass ratio of the low surface energy nano-silicon dioxide particles, polyvinylidene chloride and acetone prepared in step (1) is 1:5:2, and after the three are mixed, they are mixed at 70°C with 100r / min mechanically stirred for 50min to prepare an antifouling flashover superhydrophobic coating.

Embodiment 2

[0031] (1) According to the mass ratio of nano-silica particles, polydimethylsiloxane and ethanol, the mass ratio of the three is 8:35:8, the nano-silica particles are added to the alcohol containing polydimethylsiloxane, After mechanical stirring at 200r / min for 15 minutes, ultrasonication was performed at an ultrasonic frequency of 1.25kHz for 7 minutes to uniformly disperse the nano-silica particles, and after the ethanol volatilized, nano-silica particles with low surface energy were prepared. Wherein, the ethanol containing polydimethylsiloxane is prepared by mixing dimethylsiloxane and ethanol and mechanically stirring at 200 r / min for 15 minutes.

[0032] (2) The mass ratio of the low surface energy nano-silica particles, epoxy resin and methyl ethyl ketone prepared in step (1) is 2:4:1.5. / min mechanically stirred for 60min to prepare an antifouling flashover superhydrophobic coating.

Embodiment 3

[0034] (1) The mass ratio of nano-silica particles, polydimethylsiloxane and acetone is 12:30:5, and the nano-silica particles are added to the acetone containing polydimethylsiloxane, After mechanical stirring at 200 r / min for 15 minutes, ultrasonication was performed at an ultrasonic frequency of 1.25 kHz for 9 minutes to uniformly disperse the nano-silica particles, and after the acetone volatilized, nano-silica particles with low surface energy were prepared. Wherein, the acetone containing polydimethylsiloxane is prepared by mixing dimethylsiloxane and acetone and mechanically stirring at 200 r / min for 15 minutes.

[0035] (2) The mass ratio of the low surface energy nano-silica particles, acrylic resin and ethylene glycol prepared in step (1) is 2:3:1, and after the three are mixed, they are mixed at 92°C at 200r / min mechanically stirred for 60min to prepare an antifouling flashover superhydrophobic coating.

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Abstract

The invention relates to an anti-pollution-flashover superhydrophobic paint, and a preparation method and application thereof, belonging to the field of paints. The preparation method comprises the following steps: (1) adding nano silicon dioxide particles into a polydimethylsiloxane-containing organic solvent until the nano silicon dioxide particles are uniformly dispersed, and volatilizing the organic solvent to obtain low-surface-energy nano silicon dioxide particles; and (2) adding the low-surface-energy nano silicon dioxide particles prepared in the step (1) and an adhesive into an organic solvent, and stirring to obtain the anti-pollution-flashover superhydrophobic paint. The method has the advantages of simple technical process, low facility requests, wide raw material sources and low cost. The prepared anti-pollution-flashover superhydrophobic paint has the advantages of excellent hydrophobicity, high aging resistance, favorable self-repair effect, high pollution flashover voltage and the like, and is used for external insulation protection of transmission equipment and transformer equipment in heavy-smog regions.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to an antifouling flashover superhydrophobic coating and a preparation method and application thereof. Background technique [0002] With the development of China's economy, the problem of environmental pollution is becoming more and more serious. The original external insulation configuration of power equipment can no longer meet the needs of anti-pollution flashover. The power system has gradually introduced anti-pollution flashover coatings as the main measure to suppress pollution flashover accidents. [0003] Traditional silicone oil, ozokerite and other materials have a certain anti-pollution flashover effect, but the validity period is too short, only 3-6 months, easy to adhere to dirt during use, difficult to clean, and difficult to remove after failure, not widely accepted by power systems. [0004] In the mid-to-late 1980s, the power system began to introduce room tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/08C09D133/00C09D127/16C09D163/00C09D5/16
CPCC09D127/08C08K3/36C08K2201/011C09D5/1687C09D127/16C09D133/00C09D163/00
Inventor 黄正勇李剑王飞鹏杨丽君陈伟根廖瑞金杜林王有元周泉赵学童
Owner CHONGQING UNIV
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