Preparation method of antibacterial mildewproof humidity-control building paint containing modified nano zinc oxide-talc powder

A technology of nano-zinc oxide and architectural coatings, which is applied in the field of coatings and can solve problems such as damage to the coating structure, low dispersion of graphene, pitting pits, etc.

Inactive Publication Date: 2018-10-12
WUHU BAOYI AMUSEMENT EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dispersion of graphene in the coating is low, and it is ...

Method used

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Embodiment

[0019] A method for preparing an antibacterial, mildew-proof, and humidity-adjusting architectural coating containing modified nano-zinc oxide-talc powder, characterized in that, the steps are as follows:

[0020] (1) Modification of nano zinc oxide:

[0021] Add absolute ethanol at 1:18 to 3kg nano-zinc oxide powder, after ultrasonic treatment for 15min, add 0.15kg of silane coupling agent, mix with electric stirring for 10min, ultrasonically treat at 44-46°C for 1h, then heat up to 80-82°C Treat at ℃ for 2 hours, wash with ethanol for 3 times, vacuum filter, dry in a blast drying oven at 80-83℃ for 20 hours, and grind through a 300-mesh sieve to obtain coupling-modified nano-zinc oxide;

[0022] (2) Modification of styrene-acrylic emulsion with coupling agent:

[0023] Add ammonia water dropwise to 70kg of styrene-acrylic emulsion, adjust the pH of the solution to 7-8, and after electric stirring in a water bath for 30 minutes, add a silane coupling agent dropwise, continue...

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Abstract

The invention discloses a preparation method of antibacterial mildewproof humidity-control building paint containing modified nano zinc oxide-talc powder, the preparation method is characterized in that: adding anhydrous ethanol to nano zinc oxide for ultrasonic treatment, adding a silane coupling agent, mixing well, after the ultrasonic treatment, heating, washing with ethanol, filtering by suction under vacuum, drying in a blast drying oven, and grinding and sieving to obtain modified nano zinc oxide; adding ammonia water to styrene-acrylic emulsion to adjust the pH, after electric stirringin a water bath pot, adding the silane coupling agent dropwise, stirring, adding the modified nano zinc oxide, heating and stirring to obtain modified styrene-acrylic emulsion; drying talc powder in ahot air drying oven, adding an aluminate coupling agent, and melting and blending in a high speed mixer to obtain coupled modified talc powder; adding a dispersant, a lubricant and sodium dodecylbenzene sulfonate to pure water, stirring, adding ethylene glycol and NaOH, stirring, adding sepiolite, rotating, adding a filler, stirring, adding 2,2,4-Trimethyl-1,3-pentanediolmono(2-methylpropanoate)and the modified styrene-acrylic emulsion, stirring, and adding a preservative and a dispersant to mix evenly to obtain the antibacterial mildewproof humidity-control building paint.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a preparation method of an antibacterial, mildew-proof, and humidity-adjusting architectural coating containing modified nanometer zinc oxide-talcum powder. Background technique [0002] Traditional solvent-based anti-corrosion coatings have problems such as high porosity, poor hydrophobicity, and low coating strength. Doping nanoparticles in traditional coatings is a common method to reduce porosity, increase hydrophobicity, and improve coating strength. Graphene is a two-dimensional honeycomb carbon nanomaterial with large specific surface area, high density and chemical inertness, and has strong physical shielding performance against corrosive media. Doping graphene in organic coatings can effectively improve Corrosion resistance of coatings. However, graphene has low dispersion in coatings and is prone to agglomeration, resulting in pitting pits and destroying the coating structure. ...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D5/14C09D7/61C09D7/63
CPCC09D125/14C08K2003/2296C08K2201/011C08K2201/014C09D5/14C09D7/61C09D7/63C08K13/06C08K9/06C08K3/22C08K9/04C08K3/34C08K5/053C08K3/346
Inventor 张庆
Owner WUHU BAOYI AMUSEMENT EQUIP
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