1results about How to "Increase burst pressure" patented technology

This invention relates to the field of rubber hose technology, and discloses a highly flexible and pressure-resistant rubber hose and its preparation method. The preparation method is as follows: An inner layer compound rubber is fed into an extruder and extruded at 70-90°C to form a tubular inner rubber layer. Then, on the surface of the tubular inner rubber layer, polyester tempered brown filaments are braided into a tubular skeleton using a braiding machine, controlling the braiding density to be 80%-95% and the braiding angle to be 45°-60°. Finally, an outer layer compound rubber is fed into an extruder and extruded at 70-90°C to coat the outside of the skeleton layer, forming an integrated composite hose blank. The blank is then fed into a vulcanizing device, controlling the vulcanizing pressure at 0.8-1.2 MPa, the temperature at 150-170°C, and the holding vulcanization for 25-50 minutes. After vulcanization, it is cooled to obtain a highly flexible and pressure-resistant rubber hose. The highly flexible and pressure-resistant rubber hose prepared by this invention has excellent pressure resistance, flexibility, and aging resistance.