Thermoplastic stock shape and method for making the same.

摘要

A method for making stock shapes from a composition which includes a liquid crystal polymer having a high crystallization temperature, said method comprising: (a) densifying the composition into a compact; and (b) processing the compact at one or more temperatures below the crystallization temperature using a moderate to high strain rate. For the liquid crystal polymer consisting essentially of p, p min biphenol, p-hydroxybenzoic acid and terephthalic acid monomers and sold under the trademark "Xydar TM ", a preferred embodiment includes heating the compact to one or more temperatures between about 400-650 DEG F; and extruding the heated compact in the solid state through a uniform flow-type die at a strain rate of at least about 2 sec<-><1>. Thermoplastic stock shapes weighing about four or more pounds and having thicknesses in all dimensions greater than the maximum thickness obtainable through injection molding are also disclosed.