Acid fracturing hose and preparation method thereof

An acid fracturing hose, comprising, sequentially from inside to outside, an inner liner layer, an inner rubber layer, a first buffer layer, a reinforcing layer, a second buffer layer and an outer rubber layer;

• wherein, the inner liner layer is made of at least one layer of ultra-high molecular weight polyethylene film, the reinforcing layer comprises middle rubber layers and steel wire layers that are arranged at intervals, the inner rubber layer and the outer rubber layer are made of synthetic rubber, and the first buffer layer, the middle rubber layers and the second buffer layer are made of kiss-coating cord fabrics;
• wherein the reinforcing layer comprises a plurality of the steel wire layers being divided into steel wire inner layers and steel wire outer layers;
• wherein, in the acid fracturing hose, a diameter and a strength of steel wires in the steel wire inner layers are lower than those of steel wires in the steel wire outer layers, respectively, and an elongation of the steel wires in the steel wire inner layers is higher than that of the steel wires in the steel wire outer layers;
• when a hose body expands under pressure, the steel wires of the steel wire inner layers are expanded when the steel wires are pressed, the pressure is sequentially transmitted outwards from a first layer, so that the pressure is transmitted layer by layer to the outer layer;
• wherein a winding direction of the steel wires in two adjacent steel wire layers is opposite, and a winding angle of the steel wires in the plurality of the steel wire layers increase sequentially from inside to outside.