Micro UV irradiator (UV-1047Xe)
Rapid analysis of light, heat, and oxidative degradation of polymer materials, providing a powerful tool for material design, development, and early evaluation of weather resistance.
Weather-induced degradation tests of polymeric material usually requires weeks or months to complete. Frontier Laboratory's new Micro-UV irradiator uses a xenon lamp to provide UV light intensity about 2000 times stronger than that of a deuterium lamp. This reduces the time necessary to acquire meaningful data reflecting the degradation of the sample.
The effects of “weather” upon exposure to the photo / thermal – oxidative degradation process can quickly be evaluated. This information invaluably facilitate designing and developing new materials. The same system can also be applied to other analytical areas such as elucidation of the effects of additives on a polymer’s physical and chemical behavior (e.g. antioxidants). Photochemical reactions and UV curing can also be examined.
1. Analysis of volatiles generated from the photo/thermal - oxidative degradation process
Small amounts of photo/thermal - oxidative degradation products are generated when a polymeric material is irradiated by UV irradiation in air while being heated. The qualitative or quantitative analysis of the degradation products can be accomplished by cryo-trapping the degradation products at the head of a separation column prior to chromatographic separation.
2. Analysis of polymeric materials degraded by exposure to a photo/thermal-oxidative environment
The irradiated polymer can be evaluated by evolved gas analysis (EGA-MS) or flash pyrolysis (Py-GC/MS). This resulting data often provides information on the structural changes in the polymeric material.
【Examples of Technical Note】
・ Evaluation of deterioration degree of exterior wall coatings using Micro-UV Irradiator
：Part 1 Acrylic coatings with and without UV absorber and HALS （PYA5-010E）
：Part 2 Correlation between Micro UV-Irradiator and Metal Halide Weather Meter （PYA5-011E）
Wavelength range (at fiber end):
280 – 450 nm [Xe arc lamp (contains Hg)]
>60 mW/cm2 at 365 nm, >700 mW/cm2 in wavelength range of 280 - 450 nm
Light intensity control:
0 – 100 % (1 % step), irradiation time: 1 min – 999 hours (1 min step), PC controlled via RS-232C
Pyrolyzers manufactured by Frontier Laboratories Ltd installed on a GC/MS system (no modifications of existing pyrolyzer required)
UV light source, optical fiber cable/sampler, He/Air rapid pressure stabilizer, Ultra ALLOY metal capillary column, liquid nitrogen Dewar
Xe arc lamp (contains no Hg), filters: 280 – 400 nm (band pass)/350 – 400 nm (band pass), Ultra ALLOY metal capillary columns.
Compressed air (300 - 500 kPa), liquid nitrogen, power: 100 – 240 VAC (300 W)