Friction pressure induction cable based on modified material and preparation method thereof

The invention provides a friction pressure induction cable, comprising a center conductor, a modified high-molecular polymer insulating layer, an electrode layer, and an insulating outer layer which are coaxially arranged in a fitting manner in sequence. The center conductor and the modified high-molecular polymer insulating layer, and/or the modified high-molecular polymer insulating layer and the electrode layer respectively generate signals through friction. The center conductor and the electrode layer are output electrodes of the friction pressure induction cable. The modified high-molecular polymer insulating layer contains high-molecular polymers and a modified material. The invention also provides a preparation method for the friction pressure induction cable. The method comprises the following steps: (1) preparation of a modified high-molecular polymer solution; (2) formation of a poured cavity skeleton; (3) pouring; (4) sizing; and (5) formation of the insulating outer layer. The preparation method is advantaged by simple and convenient operation. The friction pressure induction cable is advantaged by compact structure, high stability, long life, and obvious effects.