Processes for producing a polymer-bonded fiber agglomerate and a fiber-reinforced composite material

US8603374B2 · kind B2 · utility

Assignee

• SGL CARBON SE · DE

Inventors

• Peter Domagalski · Meitingen, DE
• Alfred Haeusler · Freising, DE
• Ingrid Kraetschmer · Meitingen, DE
• Andreas Kienzle · Thierhaupten, DE
• Dieter Wuestner · Augsburg, DE

Key dates

• Filing date: Sep 7, 2011
• Grant date: Dec 10, 2013
• Expiry date: Sep 26, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2933
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A polymer-bonded fiber agglomerate includes short fibers selected from carbon, ceramic materials, glasses, metals and organic polymers, and a polymeric bonding resin selected from synthetic resins and thermoplastics. The fiber agglomerates have an average length, measured in the fiber direction, of from 3 mm to 50 mm and an average thickness, measured perpendicularly to the fiber direction, of from 0.1 mm to 10 mm. At least 75% of all of the contained fibers have a length which is at least 90% and not more than 110% of the fiber agglomerate average length. A fiber-reinforced composite material having the fiber agglomerate and processes for the production thereof are also provided.