Accelerated weathering parameters for some aromatic engineering thermoplastics
نویسندگان
چکیده
منابع مشابه
Sunlight , UV , & Accelerated Weathering
Sunlight is an important cause of damage to plastics, textiles, paints, and other organic materials. Short wavelength ultraviolet light has long been recognized as being responsible for most of this damage2. Spectroradiometric measurements were made to quantify the wide variations in UV content of sunlight under the following conditions: direct summer sunlight, winter sunlight, sunlight filtere...
متن کاملA 3-D Model of Cold Drawing in Engineering Thermoplastics
This article presents a 3-D multiplicative finite strain model for cold drawing (necking) in engineering thermoplastics. Amorphous as well as semi-crystalline polymers are considered. The notion of intermediate (local) stress-free configuration, that is associated with the multiplicative decomposition of the deformation gradient, is shown to provide an appropriate framework for the modeling and...
متن کاملAccelerated weathering of biosolid-amended copper mine tailings.
Application of municipal biosolids to mine tailings can enhance revegetation success, but may cause adverse environmental impacts, such as increased leaching of NO3- and metals to ground water. Kinetic weathering cells were used to simulate geochemical weathering to determine the effects of biosolid amendment on (i) pH of leachate and tailings, (ii) leaching of NO3- and SO4(2-), (iii) leaching ...
متن کاملAccelerated Mechanical Engineering/MS
For Stu dents En ter ing the Oklahoma State System for Higher Ed u cat ion Sum mer 2016 through Spring 2017 GEN ERAL RE QUIRE MENTS Me chan i cal En gi neer ing (Stan dard) A675 Bach e lor of Sci ence in Mechan i cal En gi neer ing/ Mas ter of Sci ence (Me chan i cal Engr.) F675 To tal Credit Hours . . . . . . . . . . . . . . . . . . . . . 145-149•§ Min i mum Re ten tion/Grad u a tion Grade Poi...
متن کاملPanDaTox: a tool for accelerated metabolic engineering.
Metabolic engineering is often facilitated by cloning of genes encoding enzymes from various heterologous organisms into E. coli. Such engineering efforts are frequently hampered by foreign genes that are toxic to the E. coli host. We have developed PanDaTox (www.weizmann.ac.il/pandatox), a web-based resource that provides experimental toxicity information for more than 1.5 million genes from h...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Polymer Degradation and Stability
سال: 2019
ISSN: 0141-3910
DOI: 10.1016/j.polymdegradstab.2019.05.028