Fireproof Composition

Abstract

The present invention concerns a fireproof composition consisting of reticulated polysiloxane and raw carbon nanotubes with a “bound rubber” value greater than or equal to 15 grams of carbon nanotube, said carbon nanotubes representing between 0.05 and 1% of the total weight of said composition.

1 . Fire-resistant composition containing reticulated polysiloxane and raw carbon nanotubes with a “bound rubber” value greater than or equal to 15 grams per gram of carbon nanotube, said carbon nanotubes representing between 0.05 and 1% of the total weight of said composition. 
   
   
       2 . Composition as in  claim 1  in which the percentage by weight of said raw carbon nanotubes represents between 0.25% and 0.5% of the total weight of said composition. 
   
   
       3 . Composition as in  claim 1  in which the consistency of the polysiloxane is appropriate for an application by brush or by extrusion gun. 
   
   
       4 . Composition as in  claim 1  in which the raw carbon nanotubes are selected among the group of single-wall (SWNT), double-wall (DWNT) or multi-wall (MWNT) carbon nanotubes. 
   
   
       5 . Method for obtaining a composition as in  claim 1  containing the following stages:
 a) production of a first mixture by bringing together a precursor A containing:
 a polysiloxane containing vinyl groups, 
 carbon nanotubes with a proportion by weight of between 0.05 and 1% of the weight of the final product; 
   b) the addition of a precursor B containing a polysiloxane with hydrosilane groups, to the mixture obtained in stage a);   c) creation of the reticulation of the mixture obtained in stage b).   
   
   
       6 . Method as in  claim 5  in which the reticulation of the mixture is brought about by a thermal, chemical or photochemical action. 
   
   
       7 . Method as in  claim 5  in which the proportion by weight of the carbon nanotubes is between 0.25 and 0.5% of the weight of the final product. 
   
   
       8 . Method as in  claim 5  in which said method includes a stage of degassing of the first mixture before the addition of the same in stage b). 
   
   
       9 . Method as in  claim 8 , in which said degassing stage is done by the vacuum effect. 
   
   
       10 .- 12 . (canceled) 
   
   
       13 . The fire-resistant composition of  claim 1  wherein the composition is configured as a fire-resistant protective coating. 
   
   
       14 . The fire-resistant composition of  claim 1  wherein the composition is configured as a fireproof seal. 
   
   
       15 . The fire-resistant composition of  claim 1  wherein the composition is configured as a coating.