AB Chimie - 746UV LED Tropicalization Coating

Flexible tropicalization varnish
ABchimie 746E UV LED is a clear, one-component varnish designed to protect PCBs in harsh environments.
It benefits from the dual cure technology (UV / humidity) allowing the crosslinking in the shadows.
It can be placed in a selective dispensing machine which is the ideal means of removal.
It complies with the REACH and RoHS regulations.
A certificate can be sent to you on request

CHARACTERISTICS

• Excellent adhesion in severe weather conditions
• Fluorescent to ultraviolet rays to allow control of the deposited varnish layer
• Temperature range from -55 ° C to + 150 ° C
• Heat-sealable varnish
• Mold resistance
• Excellent dielectric properties
• Ultra fast curing under UV LED exposure
• Polymerization of shadows with moisture
• Without VOC
• Reduced floor space compared to solvent solutions
• Speed of process, increase of productivity
• Use as a selective depositing machine (can be used on SC200, SC280, SC 300 and SC400 heads)
• UL94V0 certification (QMJU2-E308681)
• UL746E approval.

PROPERTIES
AB chemistry varnish 746E UV LED liquid:

• Constituent: Urethane / Acrylate
• Appearance: Yellow transparent liquid
• Nonvolatile residue:> 97%
• Viscosity at 25 ° C (ASTM D4212): 50-100 cSt
• Flash point:> 100 ° C
• Thickness: recommended 30 to 150 microns

AB chemistry varnish 746E UV LED polymerized:

• Appearance: transparent
• Adherence according to ISO 2409 Class 0 (excellent)
• Volume resistivity: 1 x 1014Ohms / cm
• Insulation resistance (ohm) 1012 (NF EN 61086)
• Dielectric strength: 60 kV / mmCTI (DIN EN 60112):> 600
• Tg: + 16 °
• CCTE (T <Tg) 200ppm / °
• CCTE (T> Tg) 250ppm / °
• CVRT + humidity (IEC 60068-2-38) + 65 ° C and 93% RH / -10 ° C, 5 ° C / min
• Thermal shock -65 ° C + 125 ° C, 30mn / 30mn, 50 cycles
• Breakdown voltage> 1750V DC (NF EN 61086)
• Temperature range from -55 ° C to + 150 ° C
• Local mechanical or chemical deversion method (DVP)