I am working on a 2-piece weatherproof enclosure for electronics that control a streetlight. The enclosure sits on top of the streetlight and so the top piece (cap) will be exposed to weather (UV, rain, wind, temperature -40C to +70C) and impact (hail) for extended periods (10-20 years). The top piece is snap-fit onto the base so it must also have a little flexibility. So I need something UL-746C f1 outdoor rated and UL-94 HB fire rated that meets the above criteria...and of course cost is always an issue.
I am considering PC stabilized with HALS and colored with TiO2 (light color to minimize the thermal rise that would be hard on the electronics inside) or Carbon Black. Other options might be a PC-ABS blend for lower cost and better cold-weather characteristics. Are these the best choices? Should I be considering PP or PA?
Any experience with materials, thicknesses, and stabilizers for long outdoor life would be much appreciated. Thanks!
I am considering PC stabilized with HALS and colored with TiO2 (light color to minimize the thermal rise that would be hard on the electronics inside) or Carbon Black. Other options might be a PC-ABS blend for lower cost and better cold-weather characteristics. Are these the best choices? Should I be considering PP or PA?
Any experience with materials, thicknesses, and stabilizers for long outdoor life would be much appreciated. Thanks!