Thermal stability and mechanical properties of room temperature vulcanized silicone rubbers

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 D4‐SiO2 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 D4‐SiO2/Al(OH)3/DBDPE/Sb2O3/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 × 1015 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 % D4‐SiO2 + 20 wt % Al(OH)3 + 15 wt % DBDPE+ Sb2O3 at the amount of 3.0 wt % to 3.7 wt %. This investigation leads the authors to a conclusion that D4‐SiO2/Al(OH)3/DBDPE/Sb2O3 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

Fabrication and characterization of multiwalled carbon nanotubes/silicone rubber composites

“…S14 has 28% access thermal endurance than the S10 due to the incorporation of MWNTs in the host matrix. The maximum thermal degradation is observed in the range 400–600°C for all ablators as the polymer pyrolysis of SR matrix is usually analyzed within this temperature range but MWNTs reduced this weight degradation significantly 28…”

Improvement of Silicone Rubber Properties by Addition of Nano-SiO2 Particles

“…However, due to the weak inter-molecular interactions between silicone macromolecules, RTV-1 SiR cannot meet the requirements of mechanical strength in the applications of sealing products. Generally, by binary reinforcing agent and modification, the mechanical properties of RTV-1 SiR can be improved in different degrees (2-3-4-5-6-7-8-9-10-11). Especially, a great deal of attentions has been paid to the preparation and characterization of the nanocomposites of RTV-1 SiR (5, 8, 12-13-14).…”

Reinforcement of silicone rubber with raspberry‐like SiO2@Polymer composite particles

“…Thermal stability is another important property that needs to be considered since silicone rubber is widely used as a thermal insulator or heat dissipation thermal pads because of its high thermal stability . The thermal stability can normally be improved by inorganic fillers, including silica, iron oxide etc . Although SiO 2 @Polymer composite particles have been proved to significantly improve the mechanical properties of silicone rubber, it is crucial to check if they may degrade its thermal stability.…”

“…21,22 The thermal stability can normally be improved by inorganic fillers, including silica, iron oxide etc. 23,24 Although SiO 2 @Polymer composite particles have been proved to significantly improve the mechanical properties of silicone rubber, it is crucial to check if they may degrade its thermal stability. TGA of the silicone rubber composite filled with different amounts of SiO 2 @Polymer composite particles was carried out ( Fig.…”