Application

Superhydrophobic Protection for Electrical Insulators

Deposited salt, dust or industrial contamination can become more conductive when the insulation surface is wet. Material selection must address surface wetting, adhesion, ageing and the site's electrical maintenance controls.

Outdoor electrical insulator protected by a superhydrophobic coating to reduce continuous water films on contaminated surfacesIllustrative visual

The challenge

Why this equipment needs a defined material evaluation.

Contamination type and severity vary by site and season.

Existing surface condition and cleaning method affect coating adhesion and uniformity.

Initial hydrophobicity must be considered together with ageing and field inspection.

Relevant DSAN materials

Connect the application to available products.

DSAN-S2001-(I) is intended for ceramic and glass insulation. Final use depends on the insulator, contamination environment, surface preparation and application controls.

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Typical equipment

  • Line insulators
  • Substation insulators
  • Bushings
  • Outdoor ceramic and glass insulation interfaces

Key evaluation parameters

Define the test condition before comparing materials.

The table separates the parameter to evaluate from the value or project condition that still needs confirmation.

ParameterWhy it mattersCurrent value / status
Water contact angleInitial indicator of water repellency on the prepared coating surface.>150° reference target; confirm the test method and prepared substrate for the project.
Roll-off angleInitial indicator of droplet mobility on the prepared coating surface.<5° reference target; confirm droplet volume and prepared substrate for the project.
Insulator substrate and surface conditionDefines preparation, primer and adhesion requirements.Project input required.
Contamination and wetting conditionAligns laboratory comparison with the service environment.Project input required.
Ageing and inspection planDefines how retained surface function and coating condition will be checked.Project input required.

Related products

Review the relevant products.

Compare each product format with the actual substrate, equipment and operating conditions.

Technical questions to confirm

Questions an engineer should answer before selection.

What insulator material and voltage environment are involved?

Identify the ceramic or glass substrate, equipment type, voltage class and whether work requires an outage.

What contamination and moisture conditions occur at the site?

Describe salt, dust, industrial deposits, fog, rain, humidity and the existing cleaning interval.

What should be evaluated?

List the intended surface, application process, operating exposure and comparison method.

Discuss your application

Send the substrate, equipment and operating condition.

Use the form for an application discussion, joint R&D or materials distribution.

Inquiries are directed to sales@dsanmaterials.com.