Aerogel/ptfe composite insulating material

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/22 (2006.01) B32B 27/12 (2006.01) C08K 3/36 (2006.01) C08L 27/18 (2006.01) F16L 9/18 (2006.01) F16L 59/02 (2006.01) F16L 59/14 (2006.01)

Patent

CA 2543386

A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding or filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.

L'invention concerne la formation d'un matériau comprenant des particules d'aérogel et un liant polytétrafluoroéthylène (PTFE) et possédant une conductivité thermique égale ou inférieure à 25 mW/m K dans des conditions atmosphériques. Le matériau peut être moulé ou formé, présente peu ou pas de débourrage des particules de remplissage et peut être formé dans des structures, telles que des rubans ou des composites, par exemple, par liaison du matériau entre deux couches externes. Les composites présentent un caractère avantageux en ce qu'ils peuvent être fléchis, étendus ou pliés sans empoussièrement considérable ou perte importante des propriétés isolantes.

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