The Effect of Morphology of Ceramic Powder on the Properties of Ceramifying Silicone Rubber
To improve the intrinsic safety of silicone rubber materials,ceramifying silicone rubber composites were prepared using wollastonite C-S6-A,C-S6-B and C-S6-C as ceramic powder,and the effect of morphology pf ceramic powder on the properties of ceramifying silicone rubber composites was studied. The experimental results showed that the particle size of C-S6-B is the largest,irregular rod-shaped,while the particle sizes of C-S6-A and C-S6-C are relatively small,mainly irregular plate-shaped.The ceramifying silicone rubber composite material prepared from rod shaped ceramic powder showed the highest initial decomposition temperature of 488.9℃,the highest limiting oxygen index value of 29.0%,the highest ten-sile strength of 7.30MPa,and the highest tear strength of 16.7kN/m. What's more,it formed a more compact and denser ce-ramic body at high temperatures. The ceramifying silicone rubber composite material prepared with rod-shaped ceramic pow-der owned better thermal stability,flame retardancy,mechanical properties and ceramic-forming properties than that with plate-shaped ceramic powder.