Insulating Construction Element, Use of an Insulating Construction Element and Method for Manufacturing an Insulating Construction Element

Abstract

The invention relates to an insulating construction element made of at least one board comprising fibres, aerogel particles and at least one binder. To achieve an insulating construction element which is especially easy to handle, easy to produce and which has high insulation properties the board comprises 20 to 40 percent by weight mineral wool fibres, 45 to 70 percent by weight aerogel particles and 8 to 12 percent by weight binder which components are pressed and cured to the board having a density of 130 kg/m 3 to 200 kg/m 3 .

1 . An insulating construction element made of at least one board comprising fibres, aerogel particles and at least one binder, whereby 20 to 40 percent by weight mineral wool fibres, 45 to 70 percent by weight aerogel particles and 8 to 12 percent by weight binder are pressed and cured to the board having a density of 130 kg/m 3  to 200 kg/m 3 . 
     
     
         2 . An element according to  claim 1 , wherein the board has a thermal conductivity λ of less than 0.022 W/(mK). 
     
     
         3 . An element according to  claim 1 , wherein the board has a density of 180 kg/m 3  and a thermal conductivity λ of 0.019 W/(mK) or less and wherein the board comprises up to 30 percent by weight fibres, especially mineral wool fibres, 50 to 70 percent by weight aerogel particles, especially hydrophobic aerogel particles and up to 10 percent by weight binder. 
     
     
         4 . An element according to  claim 1 , wherein the binder is a dry binder, especially a polar binder. 
     
     
         5 . An element according to  claim 1 , wherein the board has a compression strength of at least 5 kPa and/or a delaminating strength of at least 1 kPa. 
     
     
         6 . An element according to  claim 1 , wherein the board has a thickness of less than 30 mm, especially of 20 mm or of 10 mm. 
     
     
         7 . An element according to  claim 1 , wherein the mineral wool fibres a made of glass fibres and/or stone fibres. 
     
     
         8 . An element according to  claim 1 , wherein at least two boards are fixed to each other, especially by gluing. 
     
     
         9 . An element according to  claim 1 , wherein at least one main surface of the board is connected to a covering layer, such as a web, especially a thin woven or non-woven web made of glass fibres. 
     
     
         10 . An element according to  claim 1 , wherein the board is connected to a gypsum board providing a sandwich element, especially as an insulation composite system. 
     
     
         11 . Use of an insulating construction element made of at least one board comprising fibres, aerogel particles and at least one binder, whereby 20 to 40 percent by weight fibres, especially mineral wool fibres, 45 to 70 percent by weight aerogel particles and 8 to 12 percent by weight binder are pressed and cured to the board having a density of 130 kg/m 3  to 200 kg/m 3  as an insulation element for internal insulation of window and door openings, in areas behind radiators, insulation under floors and/or external insulation of building facades. 
     
     
         12 . A method for manufacturing an insulating construction element said method comprising the steps of:
 providing a mixture of 20 to 40 percent by weight fibres, especially mineral wool fibres, 45 to 70 percent by weight aerogel particles and 8 to 12 percent by weight of at least one binder,   pressing the mixture into the shape of a board having a density of 130 kg/m 3  to 200 kg/m 3  and   curing the board.   
     
     
         13 . A method according to  claim 11 , wherein the mixture is collected on a layer forming a carrier web and wherein the mixture is pressed and cure together with the layer forming the carrier web. 
     
     
         14 . A method according to  claim 11 , wherein at least two boards are fixed together after pressing and curing, especially by gluing. 
     
     
         15 . A method according to  claim 11 , wherein at least one board is fixed to a gypsum board to provide a thermal insulation composite system.