| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a composition which can give a molding excellent in heat resistance, surface appearance, dimensional stability, toughness, oil/gasoline resistance, abrasion resistance and variation weldability by melt-kneading a nylon resin with a glass fiber having a specified mean fiber diameter and a copper compound. SOLUTION: This composition is obtained by melt-kneading 100 pts.wt. nylon resin, desirably being at least one member selected from among aliphatic nylon resins having a melting point of 200 deg.C or above, more desirably being at least one member selected from among nylon 66, nylon 6 and copolymer nylons based thereon, 10-150 pts.wt. glass fiber having a mean fiber diameter of 5-15μm and a copper compound (e.g. cuprous iodide) in an amount enough to improve the retentivity of the strength of a weld formed when a molding of the resulting composition is welded by vibration welding and annealed. It is desirable that the glass fiber is one which is selected so that it may contain 10-50wt.%, based on the total glass fiber, glass fiber having a weight-average fiber length of 100-400μm and a fiber length of 60μm or below after the melt kneading.</p> |
