Filled polyamide molding material with low water absorption rate

Abstract

The present invention relates to filled polyamide molding materials, in particular polyamide molding materials with medium filler content, which are producible from a polyamide blend and for example by compounding with chopped or endless fibers on two-screw extruders, and have a combination of reduced water absorption and good mechanical properties, which results in very good dimensional stability and reduced variation of the electrical properties of the produced molded part, such as an antenna housings of stationary or mobile communication devices. The thermoplastic polyamide molding materials according to the present invention are suitable for manufacturing molded parts and other semi-finished or finished parts, for example by extrusion, injection molding, pressing, direct process or direct compounding, respectively, wherein the compounded polyamide molding material is directly processed by injection molding or other shaping methods.

Description

technical field [0001] The present invention relates to filled polyamide molding materials, especially polyamide molding materials with a moderate filler content, which are produced from polyamide mixtures and, for example, on a twin-screw extruder by mixing with chopped fibers or Manufactured from a mixture of endless fibers and exhibits a combination of reduced water absorption and good mechanical properties, which leads to excellent dimensional stability of the molded parts produced, e.g. antenna housings for fixed or mobile communication devices And the change of electrical properties is reduced. [0002] The thermoplastic polyamide molding materials according to the invention are suitable for the production of molded parts and other semi-finished or finished parts, for example produced by extrusion, injection molding, stamping, direct processing or direct mixing, respectively, wherein the mixed polyamide injection molding materials Direct processing by injection molding ...

AI Technical Summary

Problems solved by technology

For the water absorption of the molding material, no information is given