| 摘要 |
The present invention relates to a glass fiber reinforced polyamide resin composition. More concretely, the polyamide resin composition includes a polyamide resin, glass fiber, an acid modified polyolefin, an acid modified rubber elastomer, which has an impact strength of at least 8 kg -cm/ cm according to the assessment of ASTM D256, a flexural modulus of elasticity of at least 40,000 kg/ cm<SUP>2</SUP> according to the assessment of ASTM D790, a shrinkage variation of at least 130%, and a heat deflection temperature of at least 180 °C according to the assessment of ASTM D648. Because the polyamide resin composition is optimized in impact strength, flexural modulus of elasticity, and heat deflection temperature, the moldings prepared from the polyamide resin composition have a superior mechanical strength, which is greatly improved in dimensional stability caused by a shrinkage variation according to flow direction in the process of molding. Also, titie moldings have a superior flow index, so that it is improved in the surface defect of the same and is preferably used for an internal component such as a door frame inner cover. |
