Performance of Room Temperature Vulcanized (RTV) Silicone Rubber-Based Composites: DBDPO/RTV and DBDPE/Sb2O3/RTV

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Abstract
Composites with high flame-retardant behavior based on room temperature vulcanizing silicone rubber (RTV), decabromodiphenyloxide (DBDPO) and decabromodiphenylethane (DBDPE)/Sb2O3 as fire retardant were fabricated employing reactive solution mixing process and the method of three-roller milling. The influences of DBDPO and DBDPE/Sb2O3 on the morphologies, mechanical properties, flame-retardant properties, OI, insulating properties, hot properties of RTV were systematically investigated. It has been discovered that both kinds of doping agents can significantly improve the property characteristics of RTV matrix composites. Also, DBDPE/Sb2O3/RTV were of better comprehensive performances than DBDPO/RTV. We report final performances as follows: tear strength was 13.68 kN/m; elongation at break was 233.4%; tensile strength was 2.18 Mpa; the level of flame-retardant property was FV-0; OI was 46; Volume electric resistivity was 6.9 × 1014Ω · m; the range of decomposition temperature was 300°C to 690°C and the ending percentage of remain weight was 30.6%. The above properties were acquired on the condition of mass percent of DBDPE/Sb2O3 as 15 wt% for DBDPE/Sb2O3/RTV.

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