Patent ID: 7642331

Claim:
A composite having a capillary rise of less than 10 mm, the capillary rise being measured according to a T test, said composite being made of at least one fibrous support, excluding any architectural textile, impregnated right to the core with a crosslinked silicone elastomer, wherein said composite is obtained by: impregnating the fibrous support with a silicone composition: which is crosslinkable into an elastomer which consists of: (a) at least one polyorganosiloxane (POS) having, per molecule, at least two alkenyl, groups linked to the silicon; (b) at least one polyorganosiloxane having, per molecule, at least three hydrogen atoms linked to the silicon; (c) a catalytically effective quantity of at least one catalyst; (d) at least one adhesion promoter comprising: (d.1) at least one alkoxylated organosilane satisfying the following general formula: in which: R 1 , R 2 , R 3 are hydrogenated or hydrocarbon radicals, which are the same or differ from one another and represent hydrogen, a C 1 -C 4 linear branched alkyl or a phenyl optionally substituted with at least one C 1 -C 3 alkyl; A is a C 1 -C 4 linear or branched alkylene; G is a valency bond; R 4 and R 5 are radicals, which are identical or different and represent a linear or branched C 1 -C 4 alkyl; x′=0 or 1; and x=0 to 2; (d.2) at least one organosilicon compound comprising at least one epoxy radical; and (d.3) at least one metal M chelate and/or a metal alkoxide of general formula M(OJ) n , where n is the valency of M and J is a C 1 -C 8 linear or branched alkyl, M being chosen from the group consisting of Ti, Zr, Ge, Li, Mn, Fe, Al and Mg; (f) at least one crosslinking inhibitor; (g) at least one polyorganosiloxane resin containing at least one alkenyl residue in its structure; and (h) optionally, functional additives in order to impart specific properties and selected from the group consisting of dyes and stabilizers; which has a dynamic viscosity of between 1000 and 7000 mPa·s at 25° C. before crosslinking; and which has, after complete crosslinking by curing in a fan oven for 30 minutes at 150° C., at least one of the following mechanical properties: a Shore A hardness of at least two, a tensile strength of at least 0.5 N.mm −2 , and an elongation at break of at least 50%; and crosslinking said silicone composition applied on the support to be impregnated, the crosslinking being activated by heating the impregnated support to a temperature of between 50 and 200° C., while obviously taking into account the maximum heat resistance of the support.