Pretreatment method for improving adhesive force of silicon rubber coating on surface of titanium alloy storage tank
A technology of titanium alloy and silicone rubber, which is applied to the device for coating liquid on the surface, pretreatment surface, coating, etc., can solve the problems of bulging, high surface energy, engine failure, etc., and achieve process stability and heavy lifting. Good performance, good thermal stability, and the effect of increasing adhesion strength
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Embodiment 1
[0035] The outer surface of the metal diaphragm (thickness 0.47±0.03mm) of the spherical conical tank made of TA1 material and the outer surface of the air chamber shell (thickness ) inner surface, use 40-mesh corundum sand, and blow the sand evenly under the pressure of 0.3MPa. After cleaning the floating sand, use clean 120# gasoline to clean the parts to be sprayed. After thorough drying, 5% (wt%) pretreatment agent (anilinomethyltriethoxysilane solution) is sprayed on the inner surface of the storage tank from bottom to top along the circumferential direction, and the spraying distance is controlled at 100mm, and the spraying angle is not Less than 75°, the spraying pressure is controlled at 0.4MPa. Spray the silicone rubber coating after the pretreatment agent is sprayed and dried naturally for 25 minutes.
[0036] Carry out hydraulic strength test on the sprayed tank (fill the tank with water, keep the pressure at 4.7MPa for 10 minutes), and then conduct CT inspection....
Embodiment 2
[0038] The outer surface of the metal diaphragm (thickness 0.47±0.03mm) of the spherical conical tank made of TA1 material and the outer surface of the air chamber shell (thickness ) inner surface, use 40-mesh corundum sand, and blow the sand evenly under the pressure of 0.3MPa. After cleaning the floating sand, use clean 120# gasoline to clean the parts to be sprayed. After thorough drying, 10% (wt%) pretreatment agent (anilinomethyltriethoxysilane solution) is sprayed on the inner surface of the storage tank from bottom to top along the circumferential direction, and the spraying distance is controlled at 150mm, and the spraying angle is not Less than 75°, the spraying pressure is controlled at 0.4MPa. Spray the silicone rubber coating after the pretreatment agent is sprayed and dried naturally for 40 minutes.
[0039] Carry out hydraulic strength test on the sprayed tank (fill the tank with water, keep the pressure at 4.7MPa for 10 minutes) and then conduct CT inspection. ...
Embodiment 3
[0041] The outer surface of the metal diaphragm (thickness 0.47±0.03mm) of the spherical conical tank made of TA1 material and the outer surface of the air chamber shell (thickness ) inner surface, use 40-mesh corundum sand, and blow the sand evenly under the pressure of 0.3MPa. After cleaning the floating sand, use clean 120# gasoline to clean the parts to be sprayed. After being thoroughly dried, 10% (wt%) pretreatment agent (anilinomethyltriethoxysilane solution) is sprayed on the inner surface of the storage tank from bottom to top along the circumferential direction, and the spraying distance is controlled at 100mm, and the spraying angle is not Less than 75°, the spraying pressure is controlled at 0.6MPa. Spray the silicone rubber coating after the pretreatment agent is sprayed and dried naturally for 25 minutes.
[0042] Carry out hydraulic strength test on the sprayed tank (fill the tank with water, keep the pressure at 4.7MPa for 10 minutes) and then conduct CT insp...
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