High-solid-content nano spherical silicon dioxide polishing film and preparing method thereof
A technology of spherical silica and high solid content, which is applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., and can solve problems such as unspecified modification treatment
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Embodiment 1
[0020] Tetraethyl orthosilicate (TEOS) is used as raw material, ammonia water is used as catalyst, and ethanol is used as co-solvent. First, weigh 225ml of absolute ethanol, 150ml of ammonia water and 30ml of ultrapure water, stir gently with a magnetic stirrer for 15min in a three-neck flask and mix evenly, then quickly add 17.5ml of TEOS to the above reaction solution, stir at 60°C for 2h, and then centrifuge , and washed with water and ethanol five times respectively, and finally vacuum-dried at 110° C. for 24 hours, and ground to obtain silica nanoparticles.
[0021] Dry the silica nanoparticles prepared above in a vacuum oven at 100°C for 24 hours, then weigh 55 g of the dry powder and place it in a single-necked flask, and add 30 g of cyclohexane, y-methacryloyloxypropyl trimethyl Oxysilane 7.5g, n-propylamine 7.5g, the obtained mixture was dispersed by ultrasonic vibration for 10min, stirred at 25°C for 30min, then placed in a rotary evaporator and evaporated for 10min ...
Embodiment 2
[0028] Tetraethyl orthosilicate (TEOS) is used as raw material, ammonia water is used as catalyst, and ethanol is used as co-solvent. First, weigh 225ml of absolute ethanol, 150ml of ammonia water and 30ml of ultrapure water respectively, stir gently with a magnetic stirrer for 15min in a three-necked flask and mix evenly, then quickly add 17.5ml of TEOS to the above reaction solution, stir at 60°C for 2h, and then centrifuge , and washed with water and ethanol five times respectively, and finally vacuum-dried at 110° C. for 24 hours, and ground to obtain silica nanoparticles.
[0029] Dry the silica nanoparticles prepared above in a vacuum oven at 100°C for 24 hours, then weigh 55 g of the dry powder and place it in a single-necked flask, add 30 g of cyclohexane, y-methacryloyloxypropyl trimethyl Oxysilane 7.5g, n-propylamine 7.5g, the obtained mixture was dispersed by ultrasonic vibration for 10min, stirred at 25°C for 30min, then placed in a rotary evaporator and evaporated...
Embodiment 3
[0033] Tetraethyl orthosilicate (TEOS) is used as raw material, ammonia water is used as catalyst, and ethanol is used as co-solvent. First, weigh 225ml of absolute ethanol, 150ml of ammonia water and 30ml of ultrapure water, stir gently with a magnetic stirrer for 15min in a three-neck flask and mix evenly, then quickly add 17.5ml of TEOS to the above reaction solution, stir at 60°C for 2h, and then centrifuge , and washed with water and ethanol five times respectively, and finally vacuum-dried at 110° C. for 24 hours, and ground to obtain silica nanoparticles.
[0034] Dry the silica nanoparticles prepared above in a vacuum oven at 100°C for 24 hours, then weigh 55 g of the dry powder and place it in a single-necked flask, and add 30 g of cyclohexane, y-methacryloyloxypropyl trimethyl Oxysilane 7.5g, n-propylamine 7.5g, the obtained mixture was dispersed by ultrasonic vibration for 10min, stirred at 25°C for 30min, then placed in a rotary evaporator and evaporated for 10min ...
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