The invention concerns crosslinkable liquid silicone compositions whereof the inorganic filler can be increased while observing limits of viscosity compatible with coating of woven or nonwoven supports on an industrial scale, and which impart to the supports thermal properties (reducing calorific power and fire-proofing), impermeability and good mechanical characteristics. To achieve this, a mineral compound is used based on zirconium (zirconia or zirconium silicate) as filler slightly thickening ChZr in a crosslinkable liquid silicone composition. The ChZr has a D50 ranging between 3 and 15 &mgr;m and is used in a proportion of 100 to 350 parts by weight for 100 parts by weight of the silicone composition without fillers. Said silicone compositions may be of the type crosslinkable by polyaddition or polycondensation. The invention is useful for silicone coating textile tarpaulins for indoor or outdoor structures.
本发明涉及可交联的液态
硅橡胶组合物,其中无机填料可以增加,同时观察到与工业规模上织物或非织造物支撑物的涂覆相容的粘度限制,并赋予支撑物热性能(降低热值和防火性)、不透
水性和良好的机械特性。为了实现这一目的,使用基于
锆的矿物化合物(
氧化锆或二
氧化锆硅酸盐)作为填料,略微增稠可交联液态
硅橡胶组合物中的ChZr。ChZr的D50值在3至15μm之间,按重量比100份
硅橡胶组合物不含填料使用100至350份。所述
硅橡胶组合物可以是通过聚加或聚合反应交联的类型。本发明对于
硅橡胶涂覆室内或室外结构的纺织品篷布非常有用。