| 摘要 |
<p>The flexible tubular structure comprises reinforcing layers, a layer of fluorinated polymeric compound, and a metallic frame. The fluorinated polymeric compound consists of polyvinylidene difluoride, thermoplastic copolymer of vinylidene fluoride, and homopolymer (76-85 wt.%) as measured by adsorption chromatography. A mass ratio of comonomer of polymeric compound is 6.5-7.5 wt.%. The polymeric compound has a fatigue resistance (800 cycles) at 150[deg] C in air, and forms a pressure sheath. The reinforcing layer comprises helical profiles rolled up around the pressure sheath. The flexible tubular structure comprises reinforcing layers, a layer of fluorinated polymeric compound, and a metallic frame. The fluorinated polymeric compound consists of polyvinylidene difluoride, thermoplastic copolymer of vinylidene fluoride, and homopolymer (76-85 wt.%) as measured by adsorption chromatography. A mass ratio of comonomer of polymeric compound is 6.5-7.5 wt.%. The polymeric compound has a fatigue resistance (800 cycles) at 150[deg] C in air, and forms a pressure sheath. The reinforcing layer comprises helical profiles rolled up around the pressure sheath. The metallic frame placed at an interior of the pressure sheath. An independent claim is included for a method of fabricating a flexible tubular structure.</p> |
