Aerogel polysiloxane layer laminate structure

A process comprising preparing a laminate material comprising an aerogel layer and a polysiloxane layer distinct from the aerogel layer and in contact with the aerogel layer either directly or through an adhesive that is in direct contact with both the aerogel layer and the polysiloxane layer;

• where the polysiloxane layer comprises a polysiloxane and greater than 5 weight-percent and 95 weight-percent or less based on polysiloxane layer weight of fire retarding additives selected from a group consisting of metal hydroxides, mixed metal hydroxides, hydrated metal salts, and any combinations thereof dispersed throughout the polysiloxane layer;
• the process comprising the following steps:
• (a) paring a polysiloxane layer by compounding the fire retarding additives with an uncured polysiloxane elastomer precursor to form a compounded material and then preparing sheets of the compounded material;
• (b) providing aero gel layer;
• and
• (c) laminating the polysiloxane layer to the aerogel layer by one of the following two methods:
• Method 1:
• (i) positioning the polysiloxane layer with one surface against a surface of the aerogel layer;
• (ii) applying pressure to press the aerogel and polysiloxane layers again tone another;
• and
• (iii) heating to trigger curing of the polysiloxane of the polysiloxane layer while in contact with the aerogel layers;
• Method 2:
• (i) heating the polysiloxane layer to produce a cured sheet of compounded polysiloxane elastomer as the polysiloxane layer;
• (ii) disposing an adhesive onto the surface of one or both of the aerogel and polysiloxane layers;
• (iii) pressing the aerogel and polysiloxane layer together with the adhesive between the aerogel and polysiloxane surfaces.