HumiSeal® 1A20

Product families

Other characteristics

Brand

HumiSeal

Features

Chemical Resistant, Conformable, Easy To Modify, Excellent Moisture Resistance, Fast Drying, UV Detectable

Product Type

• 1K (1 component) Coating, Conformal Coating
• 1K (1 component) Coating
• Conformal Coating

Application Area

Printed Electronics

Application Method

Brush, Dip Coating, Spray

Caution

Application of HumiSeal® Conformal Coatings should be carried out in accordance with local and National Health and Safety regulations. The solvents in HumiSeal® 1A20 are flammable. Material should not be used in presence of open flame or sparks. Use only in well-ventilated areas to avoid inhalation of vapors or spray. Avoid contact with skin and eyes.

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Markets

Electrical & Electronics

Storage

HumiSeal® products may be stored at temperatures of 0 to 35°C. HumiSeal® 1A20 should be stored away from sunlight and excessive heat, in tightly closed containers. If coatings are partially used, the container should be purged with dry nitrogen prior to resealing. Prior to use, allow the product to equilibrate for 24 hours at a room temperature of 18 to 32°C.

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Application

Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures. Although its formulation allows HumiSeal® 1A20 to be applied using a wide variety of methods, care should be taken to ensure that it is only applied in an environment where the ambient relative humidity is at 60% or less. Application of the coating when the RH is higher than 60% can cause acceleration of the cure reaction, resulting in bubbles in the dried film.; Dipping Depending on the complexity, density and configuration of components on the assembly, it may be necessary to reduce the viscosity of HumiSeal® 1A20 with HumiSeal® Thinner 521 or 521EU in order to obtain a uniform film. Once optimum viscosity is determined, a controlled rate of immersion and withdrawal (5-15 cm/min) will further ensure even deposition of the coating and ultimately a uniform film. During the application, evaporation of solvent causes an increase in viscosity that should be adjusted by adding small amounts of HumiSeal® Thinner 521 or 521EU. Viscosity in the dip tank should be checked regularly, using a simple measuring device such as a Zahn or Ford viscosity cup.; Spraying HumiSeal® 1A20 can be sprayed using conventional spraying equipment. Spraying should be done in an environment with adequate ventilation so that the vapor and mist are carried away from the operator. The addition of HumiSeal® Thinner 521 or 521EU is necessary to ensure a uniform spray pattern resulting in pinholefree film. The amount of thinner and spray pressure will depend on the specific type of spray equipment used and operator technique. The recommended ratio of HumiSeal® 1A20 to HumiSeal® Thinner 521 or 521EU is 5:2 by volume; however the ratio may need to be adjusted to obtain a uniform coating.; Brushing HumiSeal® 1A20 may be brushed with a small addition of HumiSeal® Thinner 521 or 521EU. Uniformity of the film depends on component density and operator's technique.

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Coating Type

Conformal Coating

Technology

Ready-to-Use Products

Application Methods

• Brush
• Dip Coating
• Spray

Certifications and Compliance

• REACH (Europe)
• RoHS Compliant

Ready to Use Product Features

• Chemical Resistant
• Conformable
• Easy To Modify
• Excellent Moisture Resistance
• Fast Drying
• UV Detectable

Shelf Life at Room Temperature, DOM

6 months