Abstract Optical transmission of PMMA (polymethylmethacrylate) POF (polymer optical fibre) in the spectral range from 280 to 450 nm is investigated with a high radiation emission source comprising a mercury lamp delivering 40 W/cm 2 at the PMMA POF launch face. Just as a quick aside, and to demonstrate how scattering does reduce the measured transmission through theses plates with my setup, I did a simple experiment. The macromolecular changes attributed to the radiation were investigated by means of tests such as: traction test, percent cross-linking, thermogravimetric analysis (TGA), Fourier transform spectroscopy (FTIR) and ultraviolet visible spectroscopy (UV–Vis). It offers high levels of UV light transmission and strong resistance to degradation caused by UV light. Il est caractérisé par sa transparence (excellentes propriétés optiques, 92 % transmission lumineuse), ses facilités de mise en œuvre, ses propriétés mécaniques (rigidité et résistance au choc) ses propriétés diélectriques et sa résistance au vieillissement (excellente tenue aux UV). The macromolecular changes attributed to the radiation were investigated by means of tests such as: traction test, percent cross-linking, thermogravimetric analysis (TGA), Fourier transform spectroscopy (FTIR) and ultraviolet visible … Transmission curves of plexiglass (PMMA) and optical grease C. Joram 26 October 2009 This note documents transmission measurements of material samples frequently used in the PH/DT scintillator lab. In order to effective… When precise and consistent dimensions are essential in a UV transparency application, TOPAS COC is the safe choice for tight tolerance components. TOPAS medical grade polymers have exceptional moisture barrier properties, and resist permeation by other substances as well, as noted above. VISIBLE LIGHT TRANSMISSION In colorless form,Plexiglas ® sheet is as transparent as the finest optical glass.Its total light transmission is 92%, and its measured haze averages only 1%. Fibers can be used to easily and flexibly transmit UV light for use in measurement, testing, or spectroscopy. This outstanding clarity enables the use of PMMA in many different optical and related applications. Another Project by GoZapIt, TOPAS® is a registered trademark of TOPAS Advanced Polymethylmethacrylate (PMMA) was irradiated (360–811 h) in a UV-B accelerated aging chamber at room temperature and oxidizing atmosphere. The heat generated from the radiation source causes a sudden drop in the launched radiation due to thermal-oxidation and photo … Many medical plastics are poor barriers to moisture and chemicals, leading to a short shelf life. I then put a drop of water on each one and re-ran for transmission. For development of microfluidic devices, a 3D printing system is available from Dolomite to speed the design process. High absorption also results in another e ect due to UV: damage. In applications employing reagents, solvents, and advanced chemistry, accuracy and shelf life are extended with TOPAS COC UV transparent plastics. Polycarbonate. Optical transmission of PMMA (polymethylmethacrylate) POF (polymer optical fibre) in the spectral range from 280 to 450 nm is investigated with a high radiation emission source comprising a mercury lamp delivering 40 W/cm 2 at the PMMA POF launch face. Fu… Perhaps the most well-known of these properties is light transmission. Le PMMA coulé a une propriété optique exceptionnelle : 92 % de transmission lumineuse pour les plaques transparentes (transmission lumineuse supérieure à celle du verre). He needed to test the transmittance of infrared at 940nm. UV filtering acrylic sheet is used when UV light is not desired, and UV transmitting acrylic is used when UV light is required. Our results have demonstrated that PMMA-encapsulated UV filters have improved safety, photoprotective ability and photostability. Follow the industry leader and rely on our USP Class VI / ISO 10993 series of medical grade materials for your next medical device. TOPAS Advanced Polymers has updated its Privacy Policy for compliance with the EU’s data privacy law, the General Data Protection Regulation (GDPR). Scattering is another problem for producing UV optics. Il est doté d’une belle surface lisse et brillante.

Le PMMA coulé (plexi) a la particularité d’être très résistant aux agents atmosphériques, à la corrosion et aux UV malgré sa légèreté.

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