Fiber reinforced polypropylene compositions
The present invention is directed generally to cloth-like fiber reinforced polypropylene compositions, and the beneficial mechanical and aesthetic properties imparted by such compositions. The cloth-like fiber reinforced polypropylene compositions include at least 25 wt% polypropylene based polymer,...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The present invention is directed generally to cloth-like fiber reinforced polypropylene compositions, and the beneficial mechanical and aesthetic properties imparted by such compositions. The cloth-like fiber reinforced polypropylene compositions include at least 25 wt% polypropylene based polymer, from 5 to 60 wt% organic reinforcing fiber, from 0 to 60 wt% inorganic filler, and from 0.1 to 2.5 wt% colorant fiber. A method of making fiber reinforced polypropylene compositions and molding articles there from is also disclosed and includes the steps of twin screw extrusion compounding the composition to form a resin and injection molding the resin to form a cloth-like article. Articles molded from these fiber reinforced polypropylene compositions have a flexural modulus of at least 300,000 psi, exhibit ductility during instrumented impact testing, and exhibit a cloth-like appearance. The cloth-like fiber reinforced polypropylene compositions of the present invention are particularly suitable for making molded |
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