Type III hydrogen carbon fiber composite high-pressure gas cylinders and manufacturing.
A carbon fiber composite material high-pressure gas cylinder, which includes a metal lining and carbon fiber composite material layer wrapped on the surface of the metal lining. The ends are welded on the heads at both ends of the central axis of the metal lining, and there are circumferential ribs wrapped on the outside of the carbon fiber composite material layer. The characteristic is that the metal lining is made of titanium alloy with a tensile yield strength to elastic modulus ratio of at least 0.6% FTY/E and a fracture elongation of at least 5%, The thickness of the finished metal lining ranges from 0.5mm to 1.8mm, and the ratio of thickness to diameter of the metal lining is 2.8 × Below 10 to 3, the ratio of length to diameter of the cylindrical part of the metal lining is at least 1.00. The head of the metal lining is in the shape of a three point circular head, and the metal lining is prepared through five steps: spinning, stretching the head, recrystallization annealing treatment, mechanical processing, end welding, and welding the entire body; The carbon fiber composite material layer is a carbon fiber/epoxy winding layer, which means that the epoxy resin is mixed with an anhydride curing agent and benzyl dimethylamine accelerator in a weight ratio of 1:0.08-0.1:0.005-0.006 to form a gel, and then the impregnated carbon fiber is wound on the outer surface of the metal lining to prepare it.
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