Citation: Dan-dan Yuan, Xu-fu Cai. SYNTHESIS OF A SILICON-CONTAINING FLAME RETARDANT AND ITS SYNERGISTIC EFFECT WITH POTASSIUM-4-(PHENYLSULFONYL)BENZENESULFONATE (KSS) IN POLYCARBONATE (PC)[J]. Chinese Journal of Polymer Science, ;2013, 31(10): 1352-1358. doi: 10.1007/s10118-013-1306-8 shu

SYNTHESIS OF A SILICON-CONTAINING FLAME RETARDANT AND ITS SYNERGISTIC EFFECT WITH POTASSIUM-4-(PHENYLSULFONYL)BENZENESULFONATE (KSS) IN POLYCARBONATE (PC)

Dan-dan Yuan ¹ ,
Xu-fu Cai ^1,,

1.
Department of Polymer Science and Materials, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China

Corresponding author: Xu-fu Cai,
Received Date: 8 October 2012
Revised Date: 14 January 2013

A novel flame retardant (DAPSiO), containing silicon and nitrogen, was synthesized by using dichlorodiphenylsilane, -chloropropyl methyl dimethoxysilane and 1, 2-ethanediamine. DAPSiO was used together with potassium-4-(phenylsulfonyl)benzenesulfonate (KSS) to prepare a flame-retardant system for polycarbonate (PC). The structure of DAPSiO was characterized by Fourier transform infrared spectroscopy (FTIR), and 1H-NMR tests. Flammability and thermal behaviors of PC/KSS/DAPSiO systems were estimated by limited oxygen index (LOI), vertical burning test (UL-94) and thermogravimetric analysis (TGA) tests. The results showed that the flame retardancy and thermal stability of PC/KSS system were improved with the addition of DAPSiO. When 1 wt% DAPSiO and 0.5 wt% KSS were incorporated, the LOI value of PC was found to be 44, and class V-0 of UL-94 test was passed. The scanning electron microscopy (SEM) and FTIR indicated that PC/KSS/DAPSiO system held a more cohesive and denser char structure when compared with pure PC and PC/KSS system.
- Flame retardant,
- Thermal properties,
- Silicon,
- Polycarbonate
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