Composite materials

US6187426A · kind A · utility

Assignees

• INSTITUT FUR NEUE MATERIALIEN gem. GmbH. · DE
• Pfleiderer Dammstofftechnik International GmbH & Co. · DE

Inventors

• Gerhard Jonschker · Friedrichsthal, DE
• Martin Mennig · Idar-Oberstein, DE
• Helmut Schmidt · Riegelsberg, DE
• Rainer Angenendt · Xanten, DE

Key dates

• Filing date: May 3, 1999
• Grant date: Feb 13, 2001
• Expiry date: May 3, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249924
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composite material is described which is characterized by a substrate based on glass fibers, mineral fibers or derived timber products and by a nanocomposite which is in functional contact with said substrate and is obtainable by surface modification of PA1 a) colloidal inorganic particles with PA1 b) one or more silanes of the general formula (I) EQU R.sub.x --Si--A.sub.4-x (I) PA2 where the radicals A are identical or different and are hydroxyl groups or groups which can be removed hydrolytically, except methoxy, the radicals R are identical or different and are groups which cannot be removed hydrolytically and x is 0, 1, 2 or 3, where x.gtoreq.1 in at least 50 mol % of the silanes; PA1 under the conditions of the sol-gel process with a below-stoichiometric amount of water, based on the hydrolysable groups which are present, with formation of a nanocomposite sol, and further hydrolysis and condensation of the nanocomposite sol, if desired, before it is brought into contact with the substrate, followed by curing.