کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7824506 1502920 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of boron-containing polyurethane foams with carbazole
ترجمه فارسی عنوان
آماده سازی و مشخص کردن فوم پلی یورتان حاوی بور با کربازول
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Oligoetherol as a reactive retardant was synthesized from carbazole and boric acid in reaction with glycidol and ethylene carbonate. Moreover, melamine, melamine polyphosphate and tris(2-chloro-1-methyl-ethyl) phosphate were used as additive flame retardants. The properties of polyurethane foams obtained from such oligoetherols were investigated. It has been found that melamine is the best flame retardant. The polyurethane foam obtained from oligoetherol synthesized from carbazole, glycidol and ethylene carbonate in 1:7:8 M ratio showed not only high oxygen index (24.7%), but also the highest thermal resistance. This material showed also good mechanical resistance before and after annealing at 175 °C. The experimental results of the bioassays obtained during these investigation show that some of the microorganism have potential to degrade the tested polyurethane foams. This can be seen in data obtained with Colony Forming Unit, where bacteria were able to growth exposed to polyurethane foams, and without any addition of the carbon/energy source.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 70, September 2018, Pages 403-412
نویسندگان
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