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Split-charging nano composite functional coating

A technology of nanocomposite and functional coatings, which is applied in coatings and devices for coating liquid on the surface, etc. It can solve the problems of unstable function and quality of nanocomposite coatings, inability to exert nano-efficiency, and poor efficacy of nano-materials, etc., and achieve excellent results. Photocatalytic purification function, improved functional effect, high utilization effect

Inactive Publication Date: 2008-12-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above preparation method, there are still a large number of nanoparticles covered and sealed by pigments and fillers and film-forming polymers after the coating is formed into a film, resulting in the problem that its nano-efficacy cannot be exerted.
Therefore, at present, my country's nanocomposite coatings are still in the stage of unstable function and quality, poor practicability, and most of them are research types.
[0004] Looking at the existing technologies for making nano-composite functional coatings, there are problems with the surface dispersion and stability of nano-functional powders, especially the problems of nano-coating and sealing, resulting in poor efficacy, low utilization rate and unstable quality of nano-materials.

Method used

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  • Split-charging nano composite functional coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The first step A component preparation

[0019] Weigh 5.0g composite nanopowder (TiO 2 3.5g, ZnO 0.5g, SiO 2 1.0g) in 500ml deionized water, carry out primary ultrasonic dispersion for 2h, then add water-soluble polymer polyvinyl alcohol aqueous solution (CMC 1.0%), the addition amount is 1000ppm of the dispersion liquid weight, add film-forming agent silica sol (SiO 2 8%), the dosage is 10% of the weight of the dispersion liquid, and continue to ultrasonically disperse for 48 hours (continuously replenishing the water lost in the process) to obtain component A.

[0020] The second step B component preparation

[0021] Mix 100ml deionized water, 0.75ml defoamer (NXZ), 0.5ml wetting agent (X-405), 1.5ml dispersant (SN-5040), 4.0ml dispersant (SN-5027), 10ml antifreeze propylene glycol , 1.0ml of pH regulator (AMP-95) was added to a 1000ml high-speed mixer, 75.0g of rutile titanium dioxide (CR-828), 30.0g of calcined kaolin (1250 mesh), 50.0g of heavy calcium (800 m...

Embodiment 2

[0030] The first step is the preparation of component A

[0031] Prepare component A in the same manner as in Example 1.

[0032] The second step B component preparation

[0033] Mix 90ml decontaminated water, 1.5ml defoamer (NXZ), 1.0ml wetting agent (X-405), 1.5ml dispersant (SN-5040), 1.5ml dispersant (SN-5027), 1.5ml pH regulator (AMP-95), 13ml of propylene glycol were added to a 1000ml high-speed mixer, and then 125.0g of chinite-type titanium dioxide (CR-828), 25.0g of calcined kaolin (1250 mesh), 25.0g of ground calcium carbonate (800 mesh ), 25.0g barite powder (800 mesh) for high-speed sand milling for 30min, then add 50.0ml of 3.0% hydroxyethyl cellulose aqueous solution, continue high-speed sand milling for 0.5-1h, transfer the pigment and filler slurry into the paint mixing tank, Stir at low speed, add 170.0ml of pure acrylic emulsion (1135), 14ml of alcohol ester-12, 2.0ml of thickener (SN612), 1.5ml of defoamer (CF-16), and continue to stir at low speed for 0.5...

Embodiment 3

[0039] The first step is the preparation of component A

[0040] Weigh 10.0g composite nanopowder (TiO 2 6.0g, ZnO 1.5g, SiO 2 2.5g) add 500ml of deionized water, carry out primary ultrasonic dispersion for 2h first, then add water-soluble polymer polyvinyl alcohol aqueous solution (1% CMC), the addition amount is 1000ppm of dispersion liquid weight, add film-forming agent silica sol (SiO 2 8%), the amount added is 10% of the dispersion liquid weight, and the ultrasonic dispersion is continued for 48 hours, and the lost moisture is replenished in the process.

[0041] The second step B component preparation

[0042] Prepare according to the same method as in Example 1.

[0043] The third step is compounding of components A and B

[0044] Make according to the same method of embodiment 1.

[0045] The fourth step is to evaluate the performance of nanocomposite functional coating film

[0046] According to the same method evaluation of embodiment 1, performance index is...

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Abstract

The invention relates to a method for preparing segmental type nano functional coating. It is characterized by that coating a multifunctional monodisperse nano complex film solution component A on coat surface of common coating component B by spraying or brush painting and curing to obtain it. The coating has nano functional particle high externalization and dispersion stability to overcome cladding and closing of pigment and film forming matter to nano particles for generally preparing nano composite coating so as to make nano material give full to excellent sterilizing and degrading organic matter, aging resistance, scrubbing resistance. Component A is composed of functional complementary nano TiO2,ZnO,SiO2 composite material(1.0-5.0%),film solution silicasol(5.0-10.0%),film forming additive polymer polyvinyl alcohol(500-1000ppm) and water, Ph 7.5-9.0.Component B is composed of resin base material, pigment, additives and water, Ph 8.5-9.5.The invention overcomes low utilization rate, hard dispersion and bad function of general nano material, and having high nano efficiency, and low cost.

Description

technical field [0001] The invention belongs to the field of inorganic materials and nanometer technology, and relates to a manufacturing and construction method of a packaged nanocomposite functional paint. Background technique [0002] At present, the general method of manufacturing nano-coatings can be divided into two categories: (1) nano-structured coatings. Nano-structured coatings are prepared by a special process to prepare nano-emulsions, which are prepared by mixing and mixing nano-polymer emulsions (base materials) with dispersed and stable nano-scale pigments and fillers, additives, etc. The cost of this type of coating is high, and there are still problems in the dispersion and stabilization of nano-pigment filler slurry at high concentrations. (2) Nano-composite functional coatings. Nano-composite functional coatings are made by adding nano-powder or its dispersion liquid as a functional component to ordinary pigment and filler slurry for high-speed sand grin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/36C09D129/04C09D125/06C09D133/00
Inventor 尹光福姚亚东游潘丽李协吉
Owner SICHUAN UNIV
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