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Thermal stability and mechanical properties of room temperature vulcanized silicone rubbers

2011; Wiley; Volume: 125; Issue: 1 Linguagem: Inglês

10.1002/app.35669

1097-4628

J. J. Wang, Lajun Feng, Aoke Lei, Aijun Yan, Xiaojing Wang,

Polymer Nanocomposites and Properties

Abstract Based on much of the importance of RTV on the field of self‐cleaning application for its nontoxic, tasteless, and thermal stability, the effects of D 4 ‐SiO 2 on mechanical properties, Al(OH) 3 and decabromodiphenyl oxide ethyl(DBDPE) on flame retardant property of RTV matrix were investigated firstly. Then, a new kind of complex fire retardants was compounded. The morphology of additives and fracture appearance of composites were demonstrated by SEM. The hot property of RTV‐based composites was outlined by TG. It is found that D 4 ‐SiO 2 /Al(OH) 3 /DBDPE/Sb 2 O 3 /RTV composites were of better comprehensive performances in mechanical property, hot property, fire resistance property, and insulating property, which presented tear 26.73 kN/m of strength, 279.8% of elongation at break, 2.81 MPa of tensile strength, FV‐0 at the level of flame retardant property, 46 of Oxygen index (OI) 3.03 × 10 15 Ωm of Volume electric resistivity, the range of decomposition temperature was 370°C to 650°C, and the percentage of remain weight was 26.4%. Those properties was acquired on the condition of 11 wt % D 4 ‐SiO 2 + 20 wt % Al(OH) 3 + 15 wt % DBDPE+ Sb 2 O 3 at the amount of 3.0 wt % to 3.7 wt %. This investigation leads the authors to a conclusion that D 4 ‐SiO 2 /Al(OH) 3 /DBDPE/Sb 2 O 3 is a kind of better combination modifier than anyone kind of which in comprehensive properties for RTV. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011