Preparation method of aluminum alloy fan blade graphene damping coating
A technology for fan blades and damping coatings, applied in coatings, devices for coating liquid on surfaces, anti-corrosion coatings, etc. Corrosion and wear resistance, longevity effect
Inactive Publication Date: 2019-09-13
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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Problems solved by technology
However, during the operation of the fan, its own bad vibration and the vibration generated by the fan due to external excitation will seriously affect the operation status and service life of the fan.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] In this embodiment, the preparation method of the graphene damping coating on the aluminum alloy fan blade is as follows:
[0030] (1) Carry out surface hydroxylation treatment on LD type high-strength forged aluminum alloy (such as: LD2, LD5, LD10, etc.) The washed aluminum alloy fan blades were put into a drying oven to dry for 24 hours to obtain surface hydroxylated aluminum alloy fan blades; on this basis, the aluminum alloy fan blades were immersed in a 5wt% 3-aminopropyltrimethoxysilane aqueous solution The silanization treatment was carried out for 3 hours; then the aluminum alloy fan blades after the silanization treatment were subjected to aging treatment, and the aluminum alloy fan blades were dried in a blast drying oven at 80°C for 10 hours.
[0031] (2) Disperse 2500mg graphene oxide into 5000ml deionized aqueous solution, obtain a uniformly dispersed graphene oxide aqueous solution after ultrasonication for 3h, then add 50g sodium hydroxide and 40g sodium ...
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Abstract
The invention relates to the field of application of graphene materials, in particular to a preparation method of a high damping graphene composite material coating used for an aluminum alloy fan blade. The method comprises the steps that carboxylate graphene is taken as the raw materials, the carboxylate graphene and an aluminum alloy fan blade material subjected to silanization treatment are bonded after covalent bonds are formed through chemical reaction, a graphene wrapping layer is formed on the surface of the aluminum alloy fan blade, then the aluminum alloy fan blade is immersed into ahot polyurethane acrylate solution with an isocyanate curing agent added, film is formed after lifting and pulling are performed, and the graphene-polyurethane acrylate coating wrapping the surface ofthe aluminum alloy fan blade in a layered mode is obtained. According to the preparation method, by wrapping the surface of the aluminum alloy fan blade with the graphene-polyurethane acrylate coating in the layered mode, the graphene sheet layer can effectively expand and has strong mechanical bonding force on the surface of the aluminum alloy fan blade through covalent bond connection, in addition, a layered constraining damping structure is formed on the surface of the aluminum alloy fan blade, and the aluminum alloy fan blade is endowed with more excellent damping shock-absorbing performance.
Description
technical field [0001] The invention relates to the application field of graphene materials, in particular to a method for preparing a high-damping graphene composite material coating for aluminum alloy fan blades. Background technique [0002] Fan blades are one of the most important components of large wind turbines. Among them, the application of aluminum alloys with better corrosion resistance and lower density in fan blades has attracted more and more attention. Aluminum alloy fan blades have been widely used in many fields, such as the manufacture of high-efficiency fans for coal mines, metallurgy, and chemical industries, as well as aerospace equipment manufacturing. However, during the operation of the fan, its own bad vibration and the vibration generated by the fan due to external excitation will seriously affect the operation status and service life of the fan. Vibration hazards are especially significant as fan sizes continue to increase. In order to reduce th...
Claims
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IPC IPC(8): B05D7/14B05D3/10C09D175/14C09D5/08C09D7/62
CPCB05D3/102B05D7/14B05D2202/25B05D2320/00B05D2451/00B05D2502/00B05D2503/00B05D2518/10C09D5/08C09D175/14C09D7/62C08K9/04C08K3/042B05D2420/02B05D2425/01
Inventor 曾尤赵彤王函张建岗郝亚斌
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI