| abstract |
The present invention relates to a polyamide resin composition comprising a polyamide resin (A), a glass fiber (B), a polyacrylonitrile (PAN)-based carbon fiber (C) and conductive carbon (D) in such a content that the component (A) is 30 to 83% by weight, a content of a sum of the components (B) and (C) (B + C) is 15 to 65% by weight, a content of the component (C) is 5 to 35% by weight, a content of the component (D) is 2 to 20% by weight and a content of a sum of the component (C) and (D) (C + D) is 7 to 55% by weight all based on a total content of the components (A) to (D), and which composition has a tensile strength of not less than 150 MPa and a tensile modulus of not less than 15 GPa; a conductive shaft-shaped molded product comprising the polyamide resin composition; and a conductive roller comprising the conductive shaft-shaped molded product, and a conductive elastic material covering the conductive shaft-shaped molded product. The polyamide resin composition exhibits excellent conductivity, heat resistance and mechanical properties which allow the composition to be used as an alternate material of metal materials employed for a shaft of rollers, etc., in printers or copying machines. |