HumiSeal 1A33 - POLYURETHANE CONFORMAL COATING

HumiSeal 1A33 Description 

• HumiSeal 1A33 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications.
• HumiSeal 1A33 contains no free isocyanates and fluoresces under UV light for inspection purposes.
• HumiSeal 1A33 coating is MIL-I-46058C qualified, IPC-CC-830B and RoHS Directive 2011/65/EC compliant and recognized under UL File Number E105698

Properties of HumiSeal 1A33 TDS

Application of HumiSeal 1A33

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.

Dipping

• Depending on the complexity, density and configuration of components on the assembly, it may be necessary to reduce the viscosity of HumiSeal 1A33 with HumiSeal Thinner 503 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 503.

Spraying

• HumiSeal 1A33 can be sprayed using conventional spraying equipment.
• Spraying should be done in an environment with adequate ventilation so that the vapour 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 1A33 to HumiSeal Thinner 521 or 521EU is 4:1 by volume; however the ratio may need to be adjusted to obtain a uniform coating.

Brushing

• HumiSeal 1A33 may be applied by brush.
• Uniformity of the film depends on component density and operator's technique.

HumiSeal 1A33 Application notes

Storage HumiSeal 1A33

• HumiSeal 1A33 should be stored away from excessive heat or cold, in tightly closed containers.
• HumiSeal products may be stored at temperatures of 0 to 35°C.
• Prior to use, allow the product to equilibrate for 24 hours at a room temperature of 18 to 32°C.

Caution

• Application of HumiSeal Conformal Coatings should be carried out in accordance with local and National Health and Safety regulations.
• The solvents in HumiSeal 1A33 are flammable.
• Material should not be used in presence of open flame or sparks.
• Use only in well-ventilated areas to avoid inhalation of vapours or spray. Avoid contact with skin and eyes.

Where to buy HumiSeal 1A33 ?

We, Hicotech, are an authorized distributor of genuine HumiSeal 1A33 and other industrial products such as lubricating oils, greases, chemicals, etc. For consultation and competitive pricing, please feel free to contact us.

In addition, we also distribute other product categories such as:

• Industrial chemicals
• Cleaning Chemicals
• Encapsulants
• SMT equipment
• Conformal coatings
• Industrial Accessories

Contact Information:

Hotline/Zalo. 094 526 1931

Website. Hicotech.com.vn

Email: Sale@hicotech.com.vn