Nano SiO2-organosilicon coating and preparation method thereof
A kind of silicone coating and silicone technology, applied in the direction of coating, etc., can solve the problems of accelerated atomic oxygen and surface material reaction ability, aircraft surface material erosion, aircraft stop working, etc., to improve suspension stability and anti-ultraviolet aging , the effect of strengthening the protective effect
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Embodiment 1
[0030] nano-SiO 2 -Silicone coating, by weight percentage, its composition is as follows: Silicone resin: 82%; Nano-SiO 2 Xylene: 5%; Toluene: 3%; Butyl acetate: 3%; Dispersant: 0.4%; Leveling agent: 0.3%; Defoamer: 0.3%; Talc: 3%.
[0031] making process:
[0032] Weigh nano-SiO 2 15g powder, add 15g xylene and 15g butyl acetate, then add 0.5g dispersant (P63), stir and dissolve, then ultrasonically disperse for 20-30 minutes. Weigh 300g of silicone resin into the dispersion tank, then add 0.75g of dispersant P63, 0.75g of dispersant 963S and 0.75g of defoamer E8, stir at a slow speed (400r / min) for 5 minutes, then carry out Stir at a medium speed (1000r / min, 5min), and slowly add the above-mentioned ultrasonically dispersed nano-SiO 2 slurry. Then add 15g of talcum powder and carry out high-speed dispersion (rotating speed is 2200r / min) for 35 minutes. Put the dispersed slurry into a ball mill for grinding and dispersing (rotating at 2800r / min) for 5 hours before disch...
Embodiment 2
[0034] nano-SiO 2 -Silicone coating, by weight percentage, its composition is as follows: Silicone resin: 76%; Nano SiO 2 Xylene: 7%; Toluene: 3%; Butyl acetate: 3%; Dispersant: 0.4%; Leveling agent: 0.2%; Defoamer: 0.4%; Talc: 5%.
[0035] making process:
[0036] Weigh nano-SiO 230g of powder, add 30g of xylene and 18g of butyl acetate, then add 0.6g of dispersant (P63), stir and dissolve, then ultrasonically disperse for 20-30 minutes. Weigh 300g of silicone resin into the dispersion tank, then add 0.6g of dispersant P63, 1.2g of dispersant 963S and 1.2g of defoamer E8, stir at a slow speed (300r / min) for 10 minutes, then stir at a medium speed (rotational speed is 1150r / min, time is 4min), at the same time slowly add the above-mentioned ultrasonically dispersed nano-SiO 2 slurry. Then add 30g of talcum powder and carry out high-speed dispersion (rotating speed is 2400r / min) for 25 minutes. Put the dispersed slurry into a ball mill for grinding and dispersing (3000r / m...
Embodiment 3
[0038] nano-SiO 2 -Silicone coating, by weight percentage, its composition is as follows: Silicone resin: 65%; Nano-SiO 2 Xylene: 12.7%; Toluene: 3%; Butyl acetate: 3%; Dispersant: 0.6%; Leveling agent: 0.3%; Defoamer: 0.4%; Talc: 5%.
[0039] making process:
[0040] Weigh nano-SiO 2 60g powder, add 48g xylene and 18g butyl acetate, then add 1.2g dispersant (P63), stir and dissolve, then ultrasonically disperse for 20-30 minutes. Weigh 290g of silicone resin into the dispersion tank, then add 1.2g of dispersant P63, 1.2g of dispersant 963S and 1.2g of defoamer E8, stir at a slow speed (350r / min) for 8 minutes, then stir at a medium speed (rotational speed is 1200r / min, time is 3min), at the same time slowly add the above-mentioned ultrasonically dispersed nano-SiO 2 slurry. Then add 30g of talcum powder, and carry out high-speed dispersion (rotating speed is 2300r / min) for 30 minutes. Put the dispersed slurry into a ball mill for grinding and dispersing (rotating at 250...
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