Nano ZnO/SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating
A silicone-acrylic exterior wall and thermal insulation coating technology, applied in the direction of reflection/signal coatings, coatings, etc., to achieve excellent adaptability, excellent thermal insulation effect, and the effect of reducing heat energy transmission
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[0019] Example 1:
[0020] A preparation method of nano-ZnO / SiO2 sol-modified silicon-acrylic exterior wall self-cleaning thermal insulation coating includes the following steps (wherein each percentage is a percentage by weight):
[0021] 1. Put the 40% fluorine-modified silicone-acrylic emulsion into the tank first, and dope 8% nano-Sb with SnO 2 , Nano ZnO sol and nano SiO 2 The 4% and 2% silane molecular bridges of the sol were added sequentially and then dispersed at a speed of 1200 rpm, and ultrasonic waves were introduced to assist dispersion for 40 minutes to generate a base material liquid.
[0022] 2. Add 12% hollow ceramic beads, 13% titanium dioxide, 0.2% defoamer, 0.1% bactericide, 0.5% thickener, 0.45% film-forming aid, and 6% rheological agent to the base in sequence In the material liquid, add deionized water and stir for 40 minutes at a speed of 1200 rpm to mix evenly, and adjust the viscosity to 80KU (the viscosity can be adjusted by the thickener and rheological ag...
Example
[0023] Examples 2~6:
[0024] The raw materials and their weight ratio relationships and adjustment parameters in the following table are used, and the same preparation method as in Example 1 is used to prepare the self-cleaning self-cleaning heat-insulating coating for exterior wall of nano-ZnO / SiO2 sol modified silicon acrylic of the present invention:
[0025]
[0026] The above-mentioned infrared reflective nano material is nano Sb, or nano Sb doped with SnO 2 , Or infrared reflective nanomaterials in the prior art.
[0027] The aforementioned molecular bridge modification materials are silane molecular bridges, or other existing molecular bridge modification materials.
[0028] The above-mentioned conventional auxiliary materials such as defoamers, bactericides, thickeners, film-forming aids, rheological agents, etc., are commonly used constituents in the coating field, and as the prior art, no further description will be given.
[0029] Using the invention as an exterior wall coat...
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