Effect of Aerogel Particle Concentration on Mechanical Behavior of Impregnated RTV 655 Compound Material for Aerospace Applications

Figure 5

Comparison of the rupture load of RTV 655+PCSA compound specimens at room temperature with neat (0% IL) RTV 655 samples. Samples were impregnated with three particle size ranges: (a) = 300–425 μm, (b) = 180–300 μm, and (c) = 90–180 μm measured for three separate sample batches. A trend of reduction in the overall mechanical strength of compound material was observed due to incorporation of PCSA particles. However, a least amount of reduction in the yield strength of the compound sample was observed at 25 wt. (%) impregnation with the smallest ( = 90–180 μm) PCSA particles.

(a)

(b)

(c)