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US 10,752,762 B2Granted
Fiber reinforced polypropylene composite
AssigneeBorealis AG
InventorsThomas Lummerstorfer, Michael Jerabek, Stefan Hochradi, Claudia Pretschuh, Karoly Renner, Lukas Sobczak, Wolfgang Stockreiter, Bela Pukanszky, Janos Moczo
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Abstract
The present invention relates to a new composite comprising glass or carbon fibers and polymer-based fibers as well as to a process for the preparation of the composite and molded articles made from said composite.
Claims13
A composite comprising:
- a) 25 to 92.5 wt. %, based on the total weight of the composite, of a polypropylene base material having a melt flow rate MFR2 (230° C., 2.16 kg) measured according to ISO 1133 in the range of from 3.0 to 140.0 g/10 min, wherein the polypropylene base material is
- i) a heterophasic propylene copolymer (HECO) comprising a polypropylene (PP) as a matrix in which an elastomeric propylene copolymer (EC) is dispersed;
- or
- ii) a polypropylene homopolymer (hPP);
- and
- b) 5 to 50 wt. %, based on the total weight of the composite, of a glass fiber (GF) or carbon fiber (CF);
- and
- c) 2.5 to 25 wt. %, based on the total weight of the composite, of a polymer-based fiber (PF) having a melting temperature of ≥210° C.,
- wherein the weight ratio of the glass fiber (GF) or carbon fiber (CF) to the polymer-based fiber (PF)[(GF) or (CF)/(PF)] is at least 2:1,
- and wherein the composite has a density of 900 to 1,300 kg/cm3.
7 more elements
Dependencies are inferred from the claim text.