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AZ-3700-LSW Low Thermal Emittance, Electrostatic Dissipative Paint Material Guide

June 2, 2025

AZ-3700-LSW Low Thermal Emittance, Electrostatic Dissipative Paint Material Guide
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Key Points

  • Engineers working on spacecraft and high-temperature applications need coating solutions that can withstand extreme environments while providing reliable electrostatic discharge protection
  • The AZ-3700-LSW electrostatic dissipative paint offers a unique combination of low thermal emittance and ESD protection specifically designed for aerospace applications
  • This material guide covers the technical specifications, application parameters, and performance characteristics that make this coating suitable for mission-critical space systems
  • Understanding the proper handling, application, and safety considerations for this specialized ESD coating paint ensures optimal performance in demanding thermal and electrical environments
Definition

What is AZ-3700-LSW?

AZ-3700-LSW is a high-temperature electrostatic dissipative paint based on a low off-gassing silicone binder, specifically developed for spacecraft surfaces that must withstand the harsh conditions of vehicle launch and space environments. This specialized coating provides controlled conductivity (10⁶ to 10⁹ Ω/square) for static charge dissipation while offering low thermal emittance (0.25-0.33) and solar absorptance (0.22-0.25) characteristics essential for spacecraft thermal management systems.

Spacecraft and satellite systems face some of the most challenging operating conditions imaginable. These systems must function reliably in the vacuum of space while enduring extreme temperature fluctuations, radiation exposure, and the mechanical stresses of launch.

One critical aspect often overlooked in spacecraft design is the management of electrostatic charge buildup and thermal control through specialized coatings. The AZ-3700-LSW electrostatic dissipative paint represents a significant advancement in addressing both of these challenges simultaneously.

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Visit the Resource Center: Advanced Coatings for Aerospace Optics

Understanding Electrostatic Dissipative Paint Technology

Electrostatic dissipative paint serves a crucial role in spacecraft and sensitive electronic applications where static charge accumulation can cause catastrophic failures. Traditional conductive coatings can create electrical shorts, while purely insulative materials allow dangerous charge buildup.

The AZ-3700-LSW electrostatic dissipative paint bridges this gap by providing controlled conductivity. With a nominal surface resistivity of 10⁶ to 10⁹ Ω/square, this coating allows static charges to dissipate safely without creating conductive paths that could interfere with electronic systems.

This controlled resistivity range represents the optimal balance for aerospace applications. The coating provides sufficient conductivity to prevent charge accumulation while maintaining enough resistance to avoid electrical interference with sensitive spacecraft electronics.

Technical Specifications and Performance Parameters

The performance characteristics of AZ-3700-LSW electrostatic dissipative paint make it particularly well-suited for demanding aerospace applications. Understanding these specifications helps engineers make informed decisions about coating selection and application.

Electrical Properties

Property

Specification

Nominal Surface Resistivity10⁶ - 10⁹ Ω/square
Electrostatic Dissipative ClassificationESD Type
Electrical PerformanceControlled conductivity for charge dissipation

The surface resistivity of this electrostatic dissipative paint falls within the ideal range for spacecraft applications. This range ensures effective static charge dissipation without creating unwanted electrical pathways that could interfere with onboard electronics.

Thermal and Optical Characteristics

The thermal properties of AZ-3700-LSW electrostatic dissipative paint provide excellent performance for spacecraft thermal management systems.

Property

Specification

Thermal Emittance (εₜ)0.25 to 0.33
Solar Absorptance (αₛ)0.22 to 0.25 at ≥ 1.25 mils thickness
Alpha/Emittance RatioClose to 1.0
Use Temperature Range-180°C to 600°C (-292°F to 1112°F)

The low thermal emittance combined with low solar absorptance creates an alpha-over-emittance ratio approaching unity. This characteristic makes the electrostatic dissipative paint particularly effective for spacecraft thermal control, as it minimizes both heat absorption from solar radiation and heat loss through thermal emission.

Physical and Application Properties

Property

Specification

Appearance/ColorNon-specular metallic gray
Nominal Dry Thickness1.0 to 2.0 mils
ASTM D3359A Adhesion GradeNot less than 3A (aluminum substrate)
Full Cure Time48-72 hours
ASTM 595 TWL/WVR/CVM %0.047% / 0.035% / 0.010%

The adhesion characteristics of this electrostatic dissipative paint ensure reliable bonding to aluminum substrates commonly used in spacecraft construction. The low outgassing properties (ASTM 595) make it suitable for vacuum applications where material emissions could contaminate sensitive optical or electronic components.

Application Methods and Best Practices

The AZ-3700-LSW electrostatic dissipative paint utilizes a silicone-based binder system that provides several application advantages for complex spacecraft geometries. The self-priming formulation eliminates the need for separate primer application, reducing process complexity and potential contamination risks.

Spray Application Techniques

High-volume, low-pressure (HVLP) spray systems provide the most effective application method for this electrostatic dissipative paint. This application technique offers several advantages for large, complex surfaces typical in spacecraft manufacturing.

However, achieving consistent performance with electrostatic dissipative paint requires specialized equipment and extensive experience with aerospace coating applications. The spray application process demands precise control of environmental conditions including temperature, humidity, and contamination levels — factors that can significantly impact the final resistivity and thermal properties of the coating.

Proper spray technique ensures the electrostatic dissipative paint achieves its specified resistivity range across the entire coated surface. This uniformity is critical for spacecraft applications where any variation in electrical or thermal properties could compromise mission success.

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Surface Preparation Requirements

Proper surface preparation is critical for achieving optimal adhesion and performance of the electrostatic dissipative paint. Aluminum substrates require thorough cleaning to remove oils, oxidation, and other contaminants that could compromise adhesion.

The complexity of surface preparation for aerospace applications extends far beyond standard cleaning protocols. Spacecraft components often feature intricate geometries, multiple material interfaces, and stringent cleanliness requirements that demand specialized facilities and trained technicians familiar with aerospace standards.

The surface preparation process directly impacts the final adhesion grade of the electrostatic dissipative paint. Following established surface preparation protocols ensures the coating meets or exceeds the ASTM D3359A Grade 3A adhesion requirement, a critical specification for components that will experience launch vibrations and thermal cycling in space.

Why Partner with Modus Advanced for Electrostatic Dissipative Paint Application

Applying AZ-3700-LSW electrostatic dissipative paint to aerospace specifications requires more than just following a procedure manual. The controlled environment, specialized equipment, and technical expertise needed for consistent results make partnering with an experienced aerospace coating specialist essential for mission-critical applications.

Our AS9100-certified facility provides the controlled environment necessary for reliable electrostatic dissipative paint application. Temperature and humidity control, contamination prevention, and proper ventilation systems ensure optimal curing conditions that directly impact the final electrical and thermal properties of the coating.

The technical complexity of achieving uniform resistivity across complex spacecraft geometries requires extensive experience with both the material characteristics and application techniques. Our engineering team understands how spray patterns, film thickness, and curing parameters affect the final performance of electrostatic dissipative paint, knowledge that comes only from years of aerospace coating experience.

Quality control during application is equally critical. Real-time monitoring of film thickness, surface resistivity, and environmental conditions ensures each coated component meets specification before leaving our facility. This level of process control and documentation is essential for aerospace applications where post-application rework is often impossible due to component complexity or delivery schedules.

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Safety Considerations and Handling Requirements

The safety data sheet for AZ-3700-LSW electrostatic dissipative paint indicates several important handling considerations that engineers and technicians must understand before working with this material.

Hazard Classifications

The electrostatic dissipative paint contains components that require careful handling and appropriate safety measures:

  • Flammable liquid and vapor: requires elimination of ignition sources
  • Respiratory irritation potential: adequate ventilation is essential
  • Skin and eye irritation: personal protective equipment is mandatory
  • Environmental concerns: proper containment and disposal required

Personal Protective Equipment

Working with this electrostatic dissipative paint requires comprehensive personal protective equipment to ensure worker safety:

  • Respiratory protection: NIOSH/MSHA approved organic vapor cartridge respirators
  • Eye protection: Splash-proof goggles to prevent eye contact
  • Skin protection: Protective gloves, long-sleeved clothing, and rubber boots
  • Ventilation: Adequate ventilation with local exhaust systems recommended

Storage and Handling Protocols

Proper storage conditions are essential for maintaining the performance characteristics of the electrostatic dissipative paint. The material should be stored below 40°F (4°C) in dry locations away from oxidizing agents and combustible materials.

All ignition sources must be eliminated from work areas where this electrostatic dissipative paint is being applied or stored. The flammable nature of the coating requires strict adherence to fire safety protocols throughout the application process.

Quality Control and Testing Considerations

Ensuring consistent performance of AZ-3700-LSW electrostatic dissipative paint requires systematic quality control measures throughout the application process. These measures help verify that the coating meets all specified performance parameters.

Electrical Resistance Testing

Surface resistivity testing verifies that the electrostatic dissipative paint achieves its specified conductivity range. Testing should be performed using appropriate meters calibrated for the 10⁶ to 10⁹ Ω/square range.

Regular resistance measurements during and after application ensure the electrostatic dissipative paint maintains its ESD protection capabilities across the entire coated surface.

Thickness Verification

Film thickness measurement is critical for achieving the specified thermal and optical properties of the electrostatic dissipative paint. The coating must achieve a minimum thickness of 1.25 mils to meet solar absorptance specifications.

Consistent thickness application across complex geometries requires careful attention to spray patterns and application techniques. Regular thickness measurements help ensure uniform coverage and optimal performance.

Applications in Aerospace and Defense Systems

The unique properties of AZ-3700-LSW electrostatic dissipative paint make it particularly valuable for spacecraft and satellite systems where both thermal control and electrostatic discharge protection are critical.

Spacecraft Thermal Management

The low thermal emittance and solar absorptance characteristics of this electrostatic dissipative paint contribute significantly to spacecraft thermal control systems. The coating helps maintain stable temperatures across spacecraft surfaces exposed to the space environment.

Thermal stability across the operating range of -180°C to 600°C (-292°F to 1112°F) ensures reliable performance throughout mission duration, from launch through orbital operations.

Satellite Component Protection

Electronic components on satellites are particularly vulnerable to electrostatic discharge events that can cause permanent damage or mission failure. The controlled conductivity of this electrostatic dissipative paint provides essential protection for these critical systems.

The coating's ability to safely dissipate static charges while maintaining electrical isolation makes it ideal for protecting sensitive electronic assemblies in the space environment.

Partnership with Modus Advanced for Specialized Coating Applications

At Modus Advanced, we understand the critical importance of proper material selection and application techniques for aerospace and defense applications. Our engineering team works closely with customers to ensure specialized coatings like AZ-3700-LSW electrostatic dissipative paint are properly integrated into their designs.

Our AS9100 certification and ITAR compliance demonstrate our commitment to the quality and security standards required for aerospace and defense applications. We bring together materials expertise, application knowledge, and quality systems to help accelerate your product development timeline.

When your mission-critical systems require specialized coatings with precise performance characteristics, partnering with Modus Advanced ensures you have access to both the materials and the expertise needed for success. Our vertically integrated approach allows us to support your project from initial design consultation through full-scale production, ensuring optimal results every step of the way.

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