What is ASTM G154?
What is ASTM G154?
Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials. Summary. This test is designed to evaluate property changes which emulate the end-use conditions the product will face, such as the effects of UV sunlight, moisture and heat.
What is Quv test?
A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. Moisture is provided by forced condensation, and temperature is controlled by heaters. No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration.
What is QUV a?
The QUV accelerated weathering tester reproduces the damage caused by sunlight, rain and dew. In a few days or weeks, the QUV UV tester can reproduce the damage that occurs over months or years outdoors.
What is accelerated weathering test?
Accelerated weathering test methods simulate extreme weather conditions using special environmental chambers and instruments that speed up the weathering process. Environmental effects can cause a change in color, cracking, corrosion and deterioration of a product’s exterior and interior.
How do you test UV resistance?
The ASTM G154 and G155 tests evaluate the resistance of a nonmetallic material to simulated sunlight and moisture exposure. When rays of sunlight—particularly UV rays—bombard a surface, they degrade smaller pigment particles, changing the surface color and creating a chalky effect.
What is a weatherometer?
(ˌwɛðəˈrɒmɪtə) n. an instrument for simulating weather conditions in order to determine weather-resistance.
What is Quv resistance?
QUV testing is used to simulate outdoor and indoor sun exposure on surface finishes and coatings and polymers. ASTM G154 is a practice used to do QUV testing.
What is Xenon testing?
Xenon arc testing promotes property changes of materials, including the effects of sunlight, moisture and heat, by simulating ultraviolet and visible solar radiations by means of a weatherometer.
What does xenon arc do?
Xenon arc is transforming the way materials producers engage with their SMB (“tail”) customers and segments. We specialize in building private label, direct-to-market teams on behalf of our clients, designed to deliver growth, simplicity and insights.
Does polypropylene block UV light?
Servicethread.com champions the extensive use of polypropylene, but suggests that it isn’t suitable in projects which will be exposed to UV rays: “Because of the chemical structure of polypropylene, it has a high degradation rate when exposed to UV light like the sun.”
Is ABS plastic UV stable?
It is, after all, one of the most popular materials used by FDM experts. And for good reason; ABS is a sturdy plastic with higher melting points than PLA, as well as a long, durable lifespan….But what does that mean?
What is xenon arc testing?