Abstract:The silicon ̄containing arylacetylene resin foam with controllable structure was prepared from silicon ̄
containing arylacetylene resin as matrix resinꎬ azodicarbonamide(AC) as blowing agent and urea as co ̄blowing agent
by foaming while the resin is curing.Experimental results revealed that a silicon ̄containing resin foam which had a
density of 0.578 g/ cm3 has a cell diameter of 300 μmꎬ a compression strength of 6.32 MPaꎬ a thermal conductivity of
0.112 W/ (mK)ꎬ and dielectric constant of 1.7.