| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle part being more excellent in liquid or gas-barrier property, more excellent in a low water-absorption property and more excellent in chemical-resistance and hydrolysis-resistance as compared with a conventional molded part using nylon-6, and to provide a rigid vehicle part having a high molecular weight, having a wider moldable temperature width and more excellent in melting moldability than a polyamide molded part using 1,9-nonanediamine single body as a diamine component. SOLUTION: The polyamide resin molded part having the liquid or gas-barrier property is produced using a polyamide resin comprising a dicarboxylic acid component comprising oxalic acid, a diamine component comprising a mixture of 1,9-nonanediamine and 2-methyl-1,8-octanediamine (hereinafter also referred to as "C9 diamine mixture") and 1,6-hexanediamine (hereinafter also referred to as "C6 diamine"), in which a molar ratio of the C9 diamine mixture and the C6 diamine is 1:99-99:1. COPYRIGHT: (C)2010,JPO&INPIT |
