Super hybrid laminated composite structure and preparation method thereof
A layered composite and ultra-hybrid technology, which is applied in the direction of metal layered products, layered product processing, chemical instruments and methods, etc., can solve the problem that the stiffness cannot meet the performance requirements of rail transit, cannot meet the changing environment of rail transit, and Corrosion and labor problems, to achieve high practical engineering application possibility and value, improve fatigue resistance and damage tolerance, and improve comfort
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[0033] Step 1: For the super-hybrid layered composite structure of 2024 aluminum alloy-glass fiber-aramid paper honeycomb-nonwoven composite knitted felt, first select 0.3mm thick 2024 aluminum alloy, glass fiber, which contains PP resin, and the pore size is 6mm aramid paper honeycomb and 2mm thick non-woven composite needle felt, the fiber layer is hemp fiber. Cut the 2024 aluminum alloy layer, fiber layer, aramid paper honeycomb layer, non-woven composite needle felt layer and fabric layer into 300×300mm, and then clean the surface of the 2024 aluminum alloy layer with alcohol.
[0034] Step 2: Alkaline wash the 2024 aluminum alloy layer for 1 min. The solute of the alkaline wash solution is NaOH and Na 2 CO 3 , Where the density is 30g / L, and then rinsed with tap water for 5min, then pickled, the solute of the pickled is HNO 3 , The density of which is 400g / L, and then rinse with tap water for 5 minutes. Finally, the 2024 aluminum alloy layer was anodized ...
Example Embodiment
Specific embodiment 2:
[0040] The first step: for the 6061 aluminum alloy-carbon fiber-glass fiber three-dimensional three-dimensional fabric-nonwoven needle felt layer super-hybrid layered composite structure, first select 0.3mm thick 6061 aluminum alloy, carbon fiber, which contains PP polypropylene resin, and pore size The glass fiber three-dimensional three-dimensional fabric with a size of 8mm and a 2.5mm thick non-woven composite needle felt, and the reinforcing fiber is bamboo fiber. Cut the 6061 aluminum alloy layer, carbon fiber layer, glass fiber three-dimensional fabric layer, non-woven composite needle felt layer and fabric layer into 400×400mm, and then clean the surface of the 6061 aluminum alloy layer with acetone.
[0041] Step 2: Alkaline wash the 6061 aluminum alloy layer for 1.5 minutes, the solute of the alkaline wash solution is NaOH, Na 2 CO 3 , The density of which is 30g / L, and then rinsed with tap water for 8min, and then pickled, the solute of pickling i...
Example Embodiment
Specific embodiment 3:
[0047] Step 1: Aiming at the super-hybrid layered composite structure of aluminum-lithium alloy-aramid fiber-aluminum honeycomb-nonwoven needle felt layer, first select 0.3mm thick aluminum-lithium alloy, aramid fiber, which contains PP (polypropylene) Resin, as well as an aluminum honeycomb with a pore size of 10mm and a 3mm thick non-woven composite needle-punched felt layer, and the reinforcing fiber is hemp fiber. Cut the aluminum-lithium alloy layer, aramid fiber layer, aluminum honeycomb layer, non-woven composite needle felt layer and fabric layer into 500×500mm, and then clean the surface of the aluminum-lithium alloy layer with alcohol.
[0048] The second step: the aluminum-lithium alloy layer is first alkali washed, then rinsed with tap water, then pickled, and rinsed with tap water. The aluminum-lithium alloy layer is anodized with phosphoric acid for 30 minutes, then rinsed for 10 minutes and dried;
[0049] The third step: select the same adhe...
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