UV80LED
HumiSeal® UV80LED
Dual Curable Conformal Coating
HumiSeal® UV80LED is a high solids, UV curable, urethane acrylate conformal coating. This material has been formulated at a low viscosity suitable for application using selective coating equipment and can be cured by LED UV systems to give a tack free coating
HumiSeal® UV80LED has been specifically developed to:
- Have a viscosity suitable for film coater application without the need for pre-heating
- Have high electrical properties that exceed over 5 Log(Ohms) passing IPC-CC-830 requirements according to IPC TM 650 2.6.3.4.
- Fluorescence under UV light allows coating
- Be cured tack-free using a UV LED lamp system
- Have a secondary cure mechanism that will fully cure any unexposed areas of the coating within 7 days at ambient conditions to give a transparent solid
HumiSeal® UV80LED meets the following standards:
- Conforme a la Directiva RoHS UE 2015/863
- Cumple con la normativa china RoHS 2
- Compliant to China Standard GB30981-202
- Contains no SVHCs to EU REACH 1907 Directive
Properties of HumiSeal® UV80LED Liquid Coatings
| Propiedad | Valor |
| Contenido mínimo de sólidos, % en peso | 98 % |
| Viscosity, at 25°C | 50 to 100 Centipoise |
| Vida útil a temperatura ambiente, DOM | 12 meses |
| Recommended UV or LED Cure | 1.08 |
| Viscosidad | Vea el curado a continuación |
Properties of HumiSeal® UV80LED Cured Coatings
| Propiedad | Valor |
| Espesor del revestimiento, según las directrices del IPC | 25 - 125 micras |
| Espesor del revestimiento, según la recomendación de la aplicación | 30 – 130 microns |
| Tiempo para alcanzar las propiedades óptimas | 7 days after UV LED cure |
| Rango de temperatura de funcionamiento | -65°C a 150°C |
| Choque térmico, según IPC-TM-650 2.6.7.1, Clase 3 | -65°C a 125°C |
| Temperatura de transición vítrea - DSC | 45°C |
| Tensión dieléctrica soportada (según MIL-I-46058C) | >1500V |
| Resistencia de aislamiento superficial (según IPC J-STD-004 (mod.)) | 10.5 log Ohms |
| Inflamabilidad, según UL-94 | TBD |
| Dielectric Strength | 60kV/mm |
| Resistividad volumétrica | 1 x 1014 Ohms / cm |
Application of HumiSeal® UV80LED
A minimum temperature of 16°C and 50% Relative Humidity is recommended for application.
Los revestimientos de conformidad pueden aplicarse con éxito a sustratos que han sido limpiados antes del revestimiento y también a sustratos ensamblados con materiales de ensamblaje de bajo residuo, "sin limpieza". Los usuarios deben realizar las pruebas adecuadas para confirmar la compatibilidad entre el revestimiento de conformidad y sus materiales de montaje, condiciones de proceso y nivel de limpieza particulares. Póngase en contacto con HumiSeal® para obtener más información.
Pulverización
HumiSeal® UV80LED can be applied via standard selective coating equipment or by conventional hand spray equipment. The air source used for spraying must be dry (a dry air supply or dry inert gas (nitrogen or argon) is highly recommended) to prevent premature curing of the secondary cure mechanism. The spraying should be done with adequate ventilation so that the vapor and mist are carried away from the operator.
Cepillado
HumiSeal® UV80LED may be applied by brush for rework or touch-up only. Brush must be cleaned with solvent promptly after use.
Curar
HumiSeal® UV80LED is a highly crosslinked coating. To achieve maximum crosslinking density, the product must be exposed to the correct spectral output. HumiSeal has modeled the performance of UV80LED LV using 385nm and 395nm LED lamp units. A minimum dose of 3 J/cm2 is recommended. (Values measured with a EIT LED radiometer). A higher dose will not be detrimental to the material.
Due to the effects of oxygen inhibition, there may be a slight residual tack immediately after cure however, this disappears after a short period of time. The cure recommendations may change as curing technology develops.
Heat is also an important component with UV cure, and different systems produce different heat outputs. Higher heat levels allow UV cure at lower dose/irradiance levels. Consequently, HumiSeal recommends that curing is discussed with HumiSeal® Technical staff to ensure the exact customer process being used will meet the coating cure requirements.
HumiSeal® UV80LED contains a reliable secondary moisture cure mechanism which will cure any shadow areas on the assembly within 7 days at ambient moisture. It is recommended that the relative humidity is above 50% to enable the secondary cure mechanism to take place.
To flush equipment and clean uncured HumiSeal® UV80LED LV, non-alcohol based solvents should be used. HumiSeal® Thinner 73, 521or 521EU are recommended.
Reelaboración
HumiSeal® UV80LED LV is a highly crosslinked UV cured coating. The cured film has a high degree of environmental and chemical resistance and will be more difficult to remove than traditional conformal coatings. Thermal displacement and mechanical abrasion are suitable options for rework of HumiSeal® UV80LED LV.
Almacenamiento
HumiSeal® UV80LED is photosensitive. The product should not be exposed to direct sunlight or full-spectrum fluorescent lighting. HumiSeal® UV80LED LV should be stored between 5 to 30°C, to maximize shelf life. Temporary storage at 40C, for example during transport, should not deteriorate the stability of the material.
Prior to use, allow the product to equilibrate for 24 hours at room temperature. HumiSeal® UV80LED LV is a moisture curing material and care should be taken to protect process vessels and partial containers from moisture.
Los envases parciales deben purgarse con un gas inerte seco, como aire seco, nitrógeno o argón, antes de cerrarlos; de lo contrario, se producirá una polimerización prematura por la humedad atmosférica.
Precaución
Application of HumiSeal® Conformal Coatings should be carried out in accordance with local and National Health and Safety regulations. Use only in well-ventilated areas to avoid inhalation of vapours or spray.
Evitar el contacto con la piel y los ojos. Consultar la FDS antes de usar.
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