摘要:
The invention relates to a hybrid film that has an intumescent layer based on a polysilicate which can be obtained by curing a dispersion containing silicon dioxide and an alkali lye in the presence of a siloxane and a polyol. The properties that are relevant to the production and the properties of the finished hybrid film can be controlled in wide ranges.
摘要:
The invention relates to a heat protection element comprising at least one carrier element and a protective layer. The protective layer is an aqueous silicate composition that can be obtained from an alkali metal oxide and SiO2 and contains at least one alkyl siloxane, the alkyl groups being linear or branched C1-C4 alkyl groups. The invention also relates to a preferred aqueous dispersion containing silicon dioxide, characterised in that it contains the silicon dioxide in the form of precipitated silicic acid, the dispersion being stabilised by adding polyol and alkali hydroxide, especially potassium hydroxide. Such a dispersion is preferably solidified by adding caustic potash solution.
摘要:
The invention relates to a translucent and preferably transparent fire protection element, which has at least two glass panes, between which there is at least one transparent fire-resistant protection layer made of a cured and water-containing alkali polysilicate, wherein each glass surface in contact with the protection layer is provided with a lye-resistant coating (a blocking layer) having a thickness of less than 100 nm, said coating being substantially made of oxides of multivalent cations and the reaction product thereof with the silicate of the glass surface. Said layers are preferably applied by means of reactive sputtering and are used to reduce (or prevent) glass corrosion and to provide priming that improves tear-off behavior in the event of a fire, thus increasing fire resistance capability.