کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5201952 | 1502910 | 2014 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal degradation behavior and fire performance of halogen-free flame-retardant high impact polystyrene containing magnesium hydroxide and microencapsulated red phosphorus
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The thermal degradation behavior and fire performance of a series of halogen-free flame-retardant high impact polystyrene (HIPS) composites containing magnesium hydroxide (MH) and microencapsulated red phosphorus (MRP) were studied by various means. It is shown that the oxidation of MRP has much influence on the thermal degradation behavior of the composite. This oxidative reaction releases heat and causes mass gain when the composite is degraded in air. No exothermic peak and mass gain peak appear in nitrogen under identical conditions. The HIPS composite containing both MH and MRP generate a smooth, compact, continuous and stable charred residue layer upon degradation in air and in flame. The residue is mainly composed of amorphous magnesium phosphate and black carbon. At the same loading level of 50Â wt%, the composite filled by either MH or MRP individually burns out, drips vigorously and fails to pass the UL-94 test. However, the HIPS/MH/MRP composite self-extinguishes quickly and reaches the V-0 rating with ease. There is appreciable synergism between MH and MRP on the flame retardancy of HIPS. The combination of both flame retardants enhances the charring capacity and fire retardancy of the composite and decreases the loading of flame retardants remarkably. The flame retardant effect occurs mainly in the condensed phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 103, May 2014, Pages 83-95
Journal: Polymer Degradation and Stability - Volume 103, May 2014, Pages 83-95
نویسندگان
Jichun Liu, Zhuoli Yu, Haibo Chang, Yanbin Zhang, Yaozhen Shi, Jie Luo, Bingli Pan, Chang Lu,