Modified nano SiO2 sol, preparation method for modified nano SiO2 sol and application method of modified nano SiO2 sol on automobile glass

A technology of automotive glass and sol, which is applied in the field of modified nano-SiO2 sol, which can solve the problems of difficulty in having both superhydrophobicity and light transmittance, poor wear resistance of superhydrophobic film layers, poor anti-fog timeliness, etc., and achieve good light transmittance , Excellent wear resistance, wear resistance has the effect of anti-fog performance

Active Publication Date: 2012-07-18
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, there are the following technical problems in the prior art: the superhydrophobic film has poor wear resistance, it is difficult to have both superhydrophobic and light transmittance, and the anti-fog timeliness is poor

Method used

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  • Modified nano SiO2 sol, preparation method for modified nano SiO2 sol and application method of modified nano SiO2 sol on automobile glass
  • Modified nano SiO2 sol, preparation method for modified nano SiO2 sol and application method of modified nano SiO2 sol on automobile glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1) Measure 50ml of absolute ethanol, 3ml of concentrated ammonia water, 4ml of tetraethyl orthosilicate, and stir at 150r / min for 90min at 60°C to obtain SiO 2 Sol; Then add Dow 350 curing agent in Dow epoxy resin 301 with the ratio of 28wt%, stir to SiO 2 Add 0.5% epoxy resin to the sol, and continue to stir at 300r / min for 30min to obtain a uniform resin / SiO 2 Sol.

[0056] 2) Measure 50ml of absolute ethanol, 3ml of concentrated ammonia water, and 4ml of tetraethyl orthosilicate, and stir at 150r / min at 60°C for 90min after sealing to obtain a uniform SiO 2 Sol A: Measure 50ml of absolute ethanol, 1.5ml of concentrated ammonia water, and 1.5ml of tetraethyl orthosilicate, seal and stir at 250r / min for 90min at 60°C to obtain a uniform SiO 2 Sol B.

[0057] 3) Add KH-550 to Sol A at a mass ratio of 0.5%, and stir at 150 r / min for 20 min at room temperature to obtain Sol C.

[0058] 4) Stir sol C at a stirring speed of 300r / min, and slowly add sol B at the same tim...

Embodiment 2

[0061] 1) Measure 50ml of absolute ethanol, 3ml of concentrated ammonia water, 4ml of tetraethyl orthosilicate, and stir at 150r / min for 90min at 60°C to obtain SiO 2 sol; then a 10% polyvinyl butyral resin / ethanol solution was added to SiO at a ratio of 1.0% 2 In the sol, continue to stir at 300r / min for 30min to obtain a uniform resin / SiO 2 Sol.

[0062] 2) Measure 50ml of absolute ethanol, 3ml of concentrated ammonia water, and 4ml of tetraethyl orthosilicate, and stir at 150r / min at 60°C for 90min after sealing to obtain a uniform SiO 2 Sol A: Measure 50ml of absolute ethanol, 1.5ml of concentrated ammonia water, and 1.5ml of tetraethyl orthosilicate, seal and stir at 250r / min for 90min at 60°C to obtain a uniform SiO 2 Sol B.

[0063] 3) Add KH-550 to Sol A at a mass ratio of 0.5%, and stir at 150 r / min for 20 min at room temperature to obtain Sol C.

[0064] 4) Stir sol C at a stirring speed of 300r / min, and slowly add sol B at the same time, adjust the stirring spee...

Embodiment 3

[0067] 1) Measure 50ml of absolute ethanol, 3.5ml of concentrated ammonia water, 3.5ml of tetraethyl orthosilicate, and stir at 150r / min for 90min at 60°C to obtain SiO 2 sol; then a 10% polyvinyl butyral resin / ethanol solution was added to SiO at a ratio of 1.0% 2In the sol, continue to stir at 300r / min for 30min to obtain a uniform resin / SiO 2 Sol.

[0068] 2) Measure 50ml of absolute ethanol, 3.5ml of concentrated ammonia water, and 3.5ml of tetraethyl orthosilicate. After sealing, stir at 150r / min for 90min at 60°C to obtain a uniform SiO 2 Sol A: measure 50ml of absolute ethanol, 2.5ml of concentrated ammonia water, and 1.5ml of tetraethyl orthosilicate, seal and stir at 250r / min for 90min at 60°C to obtain a uniform SiO 2 Sol B.

[0069] 3) Add KH-550 to Sol A at a mass ratio of 0.5%, and stir at 150 r / min for 20 min at room temperature to obtain Sol C.

[0070] 4) Stir sol C at a stirring speed of 300r / min, and slowly add sol B at the same time, adjust the stirring ...

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Abstract

The invention relates to modified nano SiO2 sol, a preparation method for the modified nano SiO2 sol and an application method of the modified nano SiO2 sol on automobile glass. The preparation method for the modified nano SiO2 sol comprises the following basic steps in sequence: 1, respectively preparing sol solution containing 30-80nm of SiO2 granules and sol solution containing 100-200nm of SiO2 granules at certain temperature under the concentration of host crystal by a sol-gel process; 2, adding resin of a proper proportion to the prepared sol solution containing 100-200nm of SiO2 granules in the step 1 and stirring to perform coating; 3, cleaning and activating the surface of the glass and baking within a range of 100-200 DEG C by adopting the infrared technology; 4, forming a resin-coated SiO2 film of 100-200nm at one side of the surface of the glass, and forming a mixed SiO2 sol film with different grain diameters of 30-80nm and 100-200nm at the other side by adopting a certain film plating mode; and baking for 60-120 minutes at the temperature of 50-120 DEG C; and 5, modifying the surface of the film-plated glass by adopting a fluorine-contained modifier, and baking for 20-90 minutes at the temperature of 60-100 DEG C.

Description

technical field [0001] The invention relates to a modified nano-SiO 2 Sol, method for its preparation and method for its use on automotive glass. Background technique [0002] The super-hydrophobic material has a lotus leaf effect, which can prevent rainwater from spreading on the surface to form a water film. The rolling angle is small, and small water droplets gather to form large water droplets. When the water droplets reach a certain size, they will roll down with their own gravity. Take away dirt to achieve self-cleaning effect. At present, super-hydrophobic glass has not been mass-produced, mainly due to the following technical difficulties: the super-hydrophobic film layer has poor wear resistance, it is difficult to have both super-hydrophobic and light-transmitting properties, the anti-fog timeliness is poor, and decontamination and cleaning are required before coating. Complicated processes such as degreasing and surface activation are more expensive than ordinar...

Claims

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Application Information

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IPC IPC(8): C03C17/34
Inventor 陈大华熊建民
Owner CHERY AUTOMOBILE CO LTD
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