| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve strength, heat resistance, chemical resistance and welding strength by welding by vibrating a plurality of moldings made up of a chemical compound containing some number of pieces falling within a range of specific values of an amino group and some parts by weight falling within a range of specific values of glass fiber based on specific parts by weight of polyamide resin. SOLUTION: 10-150 pts.wt. of glass fiber and 0.005-10 pts.wt. of chemical compound containing 2-4 pieces of an amino group are blended with 100 pts.wt. of polyamide resin. When the amount of the blended glass fiber is not more than 10 pts.wt., the welding strength of the polyamide resin decreases, and when the amount exceeds 150 pts.wt. the fluidity diminishes. The glass fiber is preferably of such a type that is normally used for a thermoplastic resin, and especially, more preferably of the chopped strand type based on non-alkali fiber glass. The chemical compound containing 2-4 pieces of the amino group to be used is preferably, a chemical compound containing 2 or 3 pieces of the amino group such as 1,6-diaminohexane, 2,4,6-triamino or 1,3,5-triazine.</p> |
