| abstract |
The present invention is directed generally to fiber reinforced polystyrene compositions, and the beneficial mechanical properties imparted by such compositions. The fiber reinforced polystyrene compositions include from 5 to 50 wt % organic fiber, and from 0 to 60 wt % inorganic filler in a matrix of an atactic polystyrene based polymer. Lubricant may also be optionally incorporated into the composition to assist with fiber pullout. Colored fiber may also be optionally incorporated into the composition to yield an article with a cloth-like appearance. Articles molded from these fiber reinforced polystyrene compositions have a flexural modulus of at least 350,000 psi, and exhibit ductility during instrumented impact testing. The fiber reinforced polystyrene compositions are suitable for making molded articles including, but not limited to, household appliances, automotive parts, and boat hulls. |