THE EFFECT OF HOLLOW GLASS MICROSPHERES ON PROPERTIES OF EXPANDED FLAME RETARDANT SILICONE RUBBER COMPOSITES

Abstract

Abstract: With hollow glass microspheres (HGM), composite expansion flame retardant melamine polyphosphate (MPP)/pentaerythritol (PER), synergistic flame retardant aluminum hydroxide Al(OH)₃, condensation type room temperature vulcanization, the liquid silicone rubber (107 glue) was made into a HGM filled type expanded flame retardant silicone rubber. The effect of the loading of HGM on the properties of the expanded flame retardant silicone rubber composite was investigated. The results show that with the increase of HGM content, the tensile strength of silicone rubber composites increases first and then decreases, the elongation at break decreases gradually, and the density decreases, and the backside temperature decreases gradually and then rises slightly. When the HGM content is added to 30wt%, the oxygen index of the silicone rubber expanded flame retardant composite reaches 36, and the thermal conductivity value achieves the lowest value of 0.15 W·m^-1·K^-1, which demonstrates that the optimal filling amount of HGM is 30wt%.

Key words: hollow glass microspheres, room temperature vulcanized liquid silicone rubber, expansion flame retardant, composite material

CLC Number:

TB332

XIE Chao, QIN Yan, HUANG Zhi-xiong, ZHANG Bo-wen. THE EFFECT OF HOLLOW GLASS MICROSPHERES ON PROPERTIES OF EXPANDED FLAME RETARDANT SILICONE RUBBER COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2020, 0(1): 95-100.

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