| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a resin composition capable of effectively improving the resistance to flex fatigue at low temperatures while ensuring excellent gas barrier properties and provide a diaphragm and an accumulator capable of effectively enhancing the durability at low temperatures. SOLUTION: This resin composition is composed by blending (A) a saponified ethylene-vinyl acetate copolymer having 25-50mol% ethylene content and >=95mol% saponification degree of the vinyl acetate component with (B) a polyamide multicomponent copolymer, comprising a polyamide component of at least three or more components containing polyamide 6 and polyamide 66 in 50-80wt.% total amount of both the components and (C) a maleic anhydride- modified ethylene-propylene copolymer so as to provide (60-85%)/(5-30%)/(10-35%) ratio based on the weight. The diaphragm is composed by including a resin layer comprising the resin composition. Furthermore, the accumulator 10 is formed by composing a flexible film 22 installed in the interior of the accumulator body by using the resultant diaphragm.</p> |
