کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5203844 1381942 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Flame retardant polyoxymethylene with aluminium hydroxide/melamine/novolac resin synergistic system
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Flame retardant polyoxymethylene with aluminium hydroxide/melamine/novolac resin synergistic system
چکیده انگلیسی
Polyoxymethylene (POM), having the lowest limiting oxygen index (LOI) (only ∼ 15%), is well known as the most difficult to be flame retarded plastic among all the polymers. In this paper, a novel synergistic flame retardant system composed of aluminium hydroxide (ATH), melamine (ME) and novolac resin was designed and successfully applied to flame retard POM. ATH took effects through heat absorption and water release. Both ME and novolac could react with the decomposition product of POM, formaldehyde, thus improving the flame retardancy. Particularly, novolac resin and ME played the roles of macromolecular charring agent and gas source, enhancing the flame retarding actions in the condensed and gaseous phases, respectively. This ternary synergistic system exhibited fine flame retardancy for POM (UL94 V-1 rating for 1.6 mm bar), and the obtained flame retardant POM also showed good processability and mechanical properties due to the lubrication, compatibilization and aid-dispersion effects of novolac resin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 95, Issue 6, June 2010, Pages 945-954
نویسندگان
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