External wall thermal insulation coating
A heat-insulating coating and exterior wall technology, applied in the direction of coating, etc., can solve the problems of low heat insulation efficiency, achieve the effects of improving heat insulation effect, increasing water resistance, and increasing void filling
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[0026] The preparation method of modified particles is as follows:
[0027] (1) Ultrasonically disperse the white carbon black and ethanol solution for 10 minutes according to the mass ratio of 1:6~8, put it into the reactor, adjust the pH to 4.0~5.0, and then add 20~30% of the white carbon black mass 3-amino Propyltriethoxysilane and silica mass 10~15% L-alanine-N-carboxy-cyclic anhydride, use nitrogen protection, preheat at 50°C for 30min;
[0028] (2) After preheating, raise the temperature to 110~120°C, add azobisisobutyronitrile with 6~9% of the mass of silica and N,N-dimethylformaldehyde with 50~60% of the mass of silica Amide, stirring and reacting for 3h, cooling to room temperature, discharging, filtering, washing the filter residue with acetone, drying, and collecting the dry matter;
[0029] (3) In terms of parts by weight, take 100~130 parts of sodium hydroxide solution, 30~35 parts of dry matter, 13~15 parts of sodium metaaluminate, 8~12 parts of sodium silicate,...
Embodiment 1
[0039] The additive is made by mixing ferric chloride and ferrous chloride in a mass ratio of 6:2.
[0040] The auxiliary particles are made by mixing tourmaline powder and vermiculite in an equal mass ratio of 2:2.
[0041] Preparation method of the mixture:
[0042] A. Ultrasonic vibration of fluosilicic acid, additives and ammonia water at a mass ratio of 6:1:15 for 10 minutes, let stand for 2 hours, heat at 80°C for 2 hours, then add calcium hydroxide 4 times the weight of additives, and heat up to 95°C , keep warm for 3h;
[0043] B. After the heat preservation is over, cool to room temperature, let stand for 10h, discharge, filter, dry, collect the dry matter, mix the dry matter, 0.3mol / L nitric acid solution and auxiliary particles in a mass ratio of 1:10:2, that is Get a mixture.
[0044] The emulsion is made by mixing silicone-acrylic emulsion and acrylic emulsion in a volume ratio of 5:3.
[0045] The film-forming aid is made by mixing ethylene glycol butyl ether...
Embodiment 2
[0057] The emulsion is made by mixing silicone acrylic emulsion and acrylic emulsion at a volume ratio of 6:5.
[0058] The film-forming aid is made by mixing ethylene glycol butyl ether and dodecyl alcohol ester at a mass ratio of 5:2.
[0059] The thickener is polyvinyl alcohol.
[0060] The defoamer is polyoxyethylene polyoxypropanolamine ether.
[0061] The preparation method of modified particles is as follows:
[0062] (1) Ultrasonic disperse white carbon black and ethanol solution at a mass ratio of 1:7 for 10 minutes, put it into the reactor, adjust the pH to 4.5, and then add 3-aminopropyltriethoxy with 25% of the weight of white carbon black Silane and silica mass 12% L-alanine-N-carboxy-cyclic anhydride, under nitrogen protection, preheated at 50°C for 30min;
[0063] (2) After preheating, raise the temperature to 115°C, add azobisisobutyronitrile with 8% mass of silica and N,N-dimethylformamide with 55% mass of silica, and stir for 3 hours. Cool to room tempera...
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