Surface modification method of nano silicon dioxide
A nano-silica, surface modification technology, applied in chemical instruments and methods, dyed organosilicon compound treatment, inorganic pigment treatment, etc., can solve the problems of large amount of organic solvent, uneven modification, etc. , the effect of high modification rate and simplified preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0024] (1) Weigh 50g of nano-silica, 500g of ethanol, and 500g of pure water respectively, pour them into a 3000mL beaker, stir with a glass rod until the powder is completely wetted, carry out ultrasonic dispersion of particles under an ultrasonic vibrator, and ultrasonically treat for 18 minutes. Dip the glass rod into the mixed solution without grain feeling, adjust the PH value with hydrochloric acid until it is acidic, PH=5, and obtain an acidic dispersion;
[0025] (2) Put the acidic dispersion in step (1) in a 5 L oil bath, and heat the oil bath to 90°C and keep stirring; weigh 10g of tridecafluorooctyltriethoxysilane modifier, and use Add the dropper into the acidic dispersion solution drop by drop, and then keep it warm for 24 hours, take out the reacted dispersion solution, and dry it in an oven at a constant temperature of 80°C to obtain modified nano-silica.
Embodiment 2
[0027] (1) Weigh 50g of nano-silica, 500g of ethanol, and 500g of pure water respectively, pour them into a 3000mL beaker, stir with a glass rod until the powder is completely wetted, carry out ultrasonic dispersion of particles under an ultrasonic vibrator, and ultrasonically treat for 18 minutes. Dip the glass rod into the mixed solution without grain feeling, adjust the PH value with hydrochloric acid until it is acidic, PH=6, and obtain an acidic dispersion;
[0028] (2) Put the acidic dispersion in step (1) in a 5 L oil bath, and heat the oil bath to 90°C and keep stirring; weigh 10g of tridecafluorooctyltriethoxysilane modifier, and use Add the dropper into the acidic dispersion solution drop by drop, and then keep it warm for 30 hours, take out the reacted dispersion solution, and dry it in an oven at a constant temperature of 80°C to obtain modified nano-silica.
Embodiment 3
[0030] (1) Weigh 100g of nano-silica, 1000g of ethanol, and 1000g of pure water, pour them into a 3000mL beaker, stir with a glass rod until the powder is completely wetted, and ultrasonically disperse the particles under an ultrasonic vibrator for about 20 minutes. , the glass rod is dipped in the mixed solution without grain feeling, and the pH value is adjusted with hydrochloric acid to be acidic, PH=5, and an acidic dispersion is obtained;
[0031] (2) Put the acidic dispersion in step (1) in a 5 L oil bath, and heat the oil bath to 90°C and keep stirring; weigh 20g of tridecafluorooctyltriethoxysilane modifier, and use Add the dropper into the acidic dispersion solution drop by drop, and then keep it warm for 24 hours, take out the reacted dispersion solution, and dry it in an oven at a constant temperature of 80°C to obtain modified nano-silica.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com