HumiSeal® UV20GEL - Designed to Provide Protection Against Vibration & Mechanical Shock in Electronic Devices
Release Time：2021-05-17
Source: HumiSeal / Editor: Ellsworth Adhesives
Protective gels for PCBs have been developed in recent years in response to many of the conditions noted earlier to solve unique problems in PCB reliability. These gels are in most cases based on the same or similar chemistry to traditional conformal coatings including acrylics, urethanes, and UV curable acrylated urethanes. HumiSeal® UV20GEL is a recent innovation from the polymer scientists at HumiSeal.
UV20GEL is a fast curing, non-sag thixotropic paste which cures to give a flexible urethane acrylate that bonds well to engineered plastics and metal-based substrates. In addition to the UV cure, this material has a secondary moisture cure mechanism to ensure cure in areas shadowed from UV light.
HumiSeal®UV20GEL is designed for staking and vibration dampening applications, but doubles as a high-performance adhesive for general PCB bonding applications.
It provides additional durability and ruggedization for printed circuit boards in demanding applications including automotive, aerospace, and appliances among others. This flexible, high adhesion gel is used for staking taller or sensitive components to provide resistance to vibration and mechanical shock conditions.
Benefits of HumiSeal® UV20 GEL:
• Single component
• Non-sag thixotropic gel
• UV curable using arc, microwave, or LED systems
• Excellent chemical resistance, flexibility, and moisture resistance.
• Secondary moisture cure mechanism for curing in the non-UV exposed shadowed areas
• Fluoresces under UV light to allow for coating inspection
• Can be applied by selective coating equipment.
• RoHS & REACH Compliant
• GB 33372-2020 Compliant
Curing of HumiSeal® UV20 GEL:
HumiSeal®UV20GEL can be cured using arc, microwave, or LED systems. Exact dosage is application dependent, however recommended dosage is 4 J/cm2 for arc and microwave systems and 10 J/cm2 for LED lamps. Because of the variations possible in curing equipment type and configuration, it is strongly recommended that you contact our Technical Support to discuss your equipment and process in detail.
HumiSeal® UV20GEL contains a reliable secondary moisture cure mechanism which will cure any shadow areas on the assembly within 7-10 days at ambient moisture.
Storage of HumiSeal® UV20 GEL
HumiSeal® UV20GEL should be stored in a cool, dry, and dark location at a temperature between 1°C to 25°C. Material is sensitive to moisture, UV, and visible light.
Ellsworth Adhesives is authorized distributor of HumiSeal® all over the world. Please feel free to contact us for immediate assistance with a technical request.
Link: https://blog.humiseal.com/uv20gel-provides-protection-against-vibration-mechanical-shock
