| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin composition which can stabilize the bubble shape of an expandable resin insulating layer as closed cells; and to provide a high-frequency coaxial cable which has satisfactory transmission characteristics. <P>SOLUTION: The high-frequency coaxial cable 1 is obtained by providing, on the outer circumference of an internal conductor 2, an internal solid layer 3, an expandable resin insulating layer 4 and an external conductor 6 in this order. The expandable resin insulating layer 4 is made of a resin composition whose melt viscosity at a density of ≥950 [kg/m<SP POS="POST">3</SP>] and at a shear rate of 4.86×10<SP POS="POST">2</SP>[1/s] is ≤1×10<SP POS="POST">3</SP>[Pa s] at 140°C and ≥5×10<SP POS="POST">3</SP>[Pa s] at 132°C. <P>COPYRIGHT: (C)2012,JPO&INPIT |
