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CN-121991539-A - Organic-inorganic hybrid interface self-cleaning glass material and preparation method thereof

CN121991539ACN 121991539 ACN121991539 ACN 121991539ACN-121991539-A

Abstract

The invention discloses an organic-inorganic hybrid interface self-cleaning glass material and a preparation method thereof. The invention prepares the AS-Ti sol auxiliary agent (Amino Silane-Titanium sol auxiliary agent) by bonding hydrophilic carboxylic acid groups and Titanium dioxide nanoclusters to a Silane skeleton through chemical co-condensation. When preparing glass material, the AS-Ti sol auxiliary agent is activated, then is compounded with prepolymer such AS silica sol, methyltrimethoxysilane and the like and water-based organic silicon resin, and cured to obtain hybrid coating liquid, and the glass substrate is coated by adopting a dipping-pulling method after cleaning and activating and is subjected to gradient curing to obtain the finished product. The AS-Ti sol auxiliary agent builds firm chemical bridging at the interface, so that the material has super strong adhesive force, high hardness and excellent wear resistance, and has stable super-hydrophilic surface and high-efficiency photocatalysis self-cleaning capability, thereby realizing the organic unification of mechanical durability and self-cleaning function.

Inventors

  • LI QIN

Assignees

  • 神木荆川节能建材有限公司

Dates

Publication Date
20260508
Application Date
20260304

Claims (9)

  1. 1. The preparation method of the organic-inorganic hybrid interface self-cleaning glass material is characterized by comprising the following steps of: Step 1, activating AS-Ti sol auxiliary agent and deionized water for 6-8 hours under an acidic condition, mixing silica sol, methyltrimethoxysilane and KH-560 under an alkaline condition, reacting for 4-5 hours at room temperature, then mixing the two, adding water-based organic silicon resin, stirring and dispersing at a high speed, adding film-forming auxiliary agent and surfactant, mixing uniformly, sealing, curing for 48-60 hours at room temperature, and filtering to obtain a hybrid coating liquid; Step 2, cleaning and activating the glass substrate, cutting the glass substrate into standard sheets with the thickness of 75mm multiplied by 25mm multiplied by 1mm, performing alkaline ultrasonic cleaning, acidic soaking and activating, deionized water flushing and ultraviolet ozone treatment, drying at 100-110 ℃, and cooling to obtain pretreated glass; And 3, coating by adopting a dipping-pulling method, immersing the pretreated glass into the hybridization coating liquid at a two-stage pulling speed in a constant temperature and constant humidity environment, leveling at room temperature after pulling, and then performing a gradient curing procedure to obtain the organic-inorganic hybridization interface self-cleaning glass material.
  2. 2. The method for preparing the organic-inorganic hybrid interface self-cleaning glass material according to claim 1, wherein the mass ratio of silica sol, methyltrimethoxysilane and KH-560 in the step 1 is (28-32): 3-7): 1-5.
  3. 3. The method for preparing the organic-inorganic hybrid interface self-cleaning glass material according to claim 1, wherein the mass ratio of the organic silicon resin, the film forming auxiliary agent and the surfactant in the step1 is (25-30): 8-15): 1-3.
  4. 4. The preparation method of the organic-inorganic hybrid interface self-cleaning glass material is characterized in that the preparation method of the AS-Ti sol auxiliary agent in the step 1 comprises the steps of adding 3-aminopropyl triethoxysilane and absolute ethyl alcohol into a flask, dropwise adding an ethanol solution of succinic anhydride, carrying out reflux reaction under nitrogen atmosphere, carrying out reduced pressure distillation to obtain an amidated product, adding a mixed solution of tetrabutyl titanate, acetylacetone, deionized water and ethanol into another flask, stirring and hydrolyzing to obtain titanium dioxide sol, mixing the amidated product and the titanium dioxide sol under the condition of pH 3.5-4.0, stirring and co-condensing at room temperature for 24-36h, concentrating and filtering to obtain the AS-Ti sol auxiliary agent.
  5. 5. The method for preparing the organic-inorganic hybrid interface self-cleaning glass material according to claim 1, wherein the two-stage pulling speed in the step 3 is specifically a first stage 100 mm/min and a second stage 10 mm/min.
  6. 6. The method for preparing the self-cleaning glass material with the organic-inorganic hybrid interface according to claim 1, wherein the gradient curing procedure in the step 3 is to pre-cure the glass material for 30-50min at 80-100 ℃ to make the coating primarily gel, and then to primarily cure the glass material for 2-4h at 150-160 ℃ and cool the glass material.
  7. 7. The method for preparing an organic-inorganic hybrid interface self-cleaning glass material according to claim 4, wherein the temperature of the reflux reaction is 60-80 ℃ and the duration is 5-7h.
  8. 8. The method for preparing the organic-inorganic hybrid interface self-cleaning glass material according to claim 4, wherein the molar ratio of tetrabutyl titanate to acetylacetone is (1-2) 1, and the molar ratio of 3-aminopropyl triethoxysilane to succinic anhydride is 1:1.
  9. 9. The method for producing an organic-inorganic hybrid interface self-cleaning glass material according to claim 4, wherein the mixing ratio of the amidation product to the titania sol is 1 (0.05-0.5).

Description

Organic-inorganic hybrid interface self-cleaning glass material and preparation method thereof Technical Field The invention relates to the technical field of advanced nonmetallic materials, in particular to an organic-inorganic hybrid interface self-cleaning glass material and a preparation method thereof. Background With the rapid development of the fields of construction, automobiles, photovoltaics and the like, the problem of cleaning and maintaining the surface of glass serving as a base material is increasingly remarkable. The traditional cleaning mode consumes manpower and material resources, and the chemical cleaning agent is easy to cause environmental pollution. Therefore, development of glass materials having a self-cleaning function has become a research hotspot. At present, the self-cleaning glass is mainly divided into super-hydrophobic type and super-hydrophilic type, wherein the super-hydrophobic type is used for constructing a micro-coarse structure by relying on low-surface energy substances (such as fluorine-containing silane) to realize that water drops roll off to take away pollutants, and the super-hydrophilic type is mainly used for generating hydrophilic surfaces and degrading organic dirt by adopting photocatalytic materials such as titanium dioxide and the like under illumination. However, single inorganic coatings tend to suffer from poor adhesion, high brittleness, insufficient durability, etc., whereas pure organic coatings have low hardness and are prone to aging. Although the organic-inorganic hybridization technology can integrate the advantages of the organic-inorganic hybridization technology and the inorganic hybridization technology, the poor interface compatibility is easy to cause phase separation, and the transparency and the long-term stability are affected. In the prior art, a stable and efficient bridge structure is constructed at an interface through molecular design, so that the balance improvement of a self-cleaning function and mechanical properties is realized, and the technical difficulty to be broken through is still urgent. Disclosure of Invention Aiming at the problems, the invention provides an organic-inorganic hybrid interface self-cleaning glass material and a preparation method thereof, which solve the key technical problems of easy separation of a coating, insufficient durability and unstable self-cleaning function caused by poor interface compatibility in organic-inorganic hybrid self-cleaning glass. The invention can be realized by the following technical scheme: The preparation method of the organic-inorganic hybrid interface self-cleaning glass material comprises the following steps: Step 1, activating AS-Ti sol auxiliary agent and deionized water for 6-8 hours under an acidic condition, mixing silica sol, methyltrimethoxysilane and KH-560 under an alkaline condition, reacting for 4-5 hours at room temperature, then mixing the two, adding water-based organic silicon resin, stirring and dispersing at a high speed, adding film-forming auxiliary agent and surfactant, mixing uniformly, sealing, curing for 48-60 hours at room temperature, and filtering to obtain a hybrid coating liquid; Step 2, cleaning and activating the glass substrate, cutting the glass substrate into standard sheets with the thickness of 75mm multiplied by 25mm multiplied by 1mm, performing alkaline ultrasonic cleaning, acidic soaking and activating, deionized water flushing and ultraviolet ozone treatment, drying at 100-110 ℃, and cooling to obtain pretreated glass; And 3, coating by adopting a dipping-pulling method, immersing the pretreated glass into the hybridization coating liquid at a two-stage pulling speed in a constant temperature and constant humidity environment, leveling at room temperature after pulling, and then performing a gradient curing procedure to obtain the organic-inorganic hybridization interface self-cleaning glass material. Preferably, the mass ratio of the silica sol to the methyltrimethoxysilane to KH-560 in the step 1 is (28-32): 3-7): 1-5. Preferably, the mass ratio of the organic silicon resin, the film forming auxiliary agent and the surfactant in the step 1 is (25-30): 8-15): 1-3. Preferably, the AS-Ti sol auxiliary agent in the step 1 is prepared by adding 3-aminopropyl triethoxysilane and absolute ethyl alcohol into a flask, dropwise adding ethanol solution of succinic anhydride, carrying out reflux reaction under nitrogen atmosphere, distilling under reduced pressure to obtain an amidated product, adding mixed solution of tetrabutyl titanate, acetylacetone, deionized water and ethanol into another flask, stirring and hydrolyzing to obtain titanium dioxide sol, mixing the amidated product and the titanium dioxide sol under the condition of pH 3.5-4.0, stirring and co-condensing at room temperature for 24-36h, concentrating and filtering to obtain the AS-Ti sol auxiliary agent. Preferably, the two-stage pulling speed in the step 3 is specifically t