由於含鹵素的阻燃材料經受熱會放出致命毒氣,本實驗添加無毒的氫氧化鎂Mg(OH)2在高分子中,比較其單純混掺與其具有鍵結的性質,實驗利用穩定自由基聚合反應(TEMPO)、氫硼化反應(9-BBN)的方法做聚合反應,使高分子與氫氧化鎂之間具有鍵結,比較其熱性質、機械性質、耐燃性…等等,另外將氫氧化鎂外包覆一層高分子,可以增進無機相的防火材料與有機相的高分子間的相容性。 獲得的產物我們利用NMR與IR鑑定結構,可以確定本實驗所用的聚苯乙烯與氫氧化鎂有鍵結,使用TGA證明添加氫氧化鎂的阻燃材料之高分子接枝量,由SEM可以觀察純的氫氧化鎂與接枝後的氫氧化鎂其粒徑大小的變化,分散在溶劑中可以測試其分散性,另外UV光穿透測試也可以佐證改善材料的界面接著問題與分散性。
Halogen-containing flame retardants would produce a large amount of smoke and toxic hydrogen halogen gases during combustion. Halogen-free flame-retarded polystyrene material have been prepared by using magnesium hydroxide as a flame retardant. Polystyrene-magnesium hydroxide were prepared using stable free radical polymerization (SFRP) and borane chemistry procedures. The products could be identified by nuclear magnetic resonance (NMR) and Fourier-transform infrared spectroscopy (FT-IR). Can be shown by thermal gravimetric analyses (TGA). The amount of polymer grafted from magnesium hydroxide can be observed. The morphology of Mg(OH)2-g-PS and pure Mg(OH)2 are compared by the using scanning electron microscope (SEM).