Hollow microsphere fluorocarbon emulsion modified waterborne epoxy resin coating and preparation method thereof
A technology of water-based epoxy resin and fluorocarbon emulsion, which is applied in epoxy resin coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problems of discoloration and chalking, poor weather resistance, and light degradation resistance, etc. The effect of poor weather resistance, good weather resistance and stain resistance
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Embodiment 1
[0022] A, B component formula of embodiment 1 are as shown in table 1:
[0023]
[0024] Table 1
[0025] Preparation process of component A: Put E20 water-based epoxy resin and anti-sedimentation agent BYK-425 into the reactor to pass cooling water, disperse for 10 minutes at 1000-1500r / min, add the formula amount, floating aluminum powder and mica into the reactor Powder, barium sulfate, corrosion inhibitor aluminum tripolyphosphate, the stirring speed is 500-1000r / min, the temperature is 10-50°C, and the fineness is less than 40 microns. After cooling to 25°C, filter and discharge, and the end.
[0026] The preparation process of component B: put the cationic hollow fluorocarbon emulsion into the reaction kettle, the stirring speed is 500-1000r / min, slowly add the film-forming aid dropwise, after 30 minutes, add 703 phenol-formaldehyde ethylenediamine condensate and stir for 5 minutes. .
[0027] A component: B component = 71:29, before use, add B component to A compon...
Embodiment 2
[0029] The formulations of A and B components are shown in Table 2:
[0030]
[0031]
[0032] Table 2
[0033] Preparation process of component A: Put E12 water-based epoxy resin and anti-sedimentation agent EW into the reactor to pass cooling water, disperse for 10 minutes at 1000-1500r / min, add the formula amount, floating aluminum powder and mica powder into the reactor, Barium sulfate, corrosion inhibitor Asconium 142DA, stirring speed 500-1000r / min, temperature 10-50°C, disperse to a fineness below 40 microns, cool to 25°C, filter and discharge, and end.
[0034] Preparation process of component B: put the cationic hollow fluorocarbon emulsion into the reactor, stir at 500-1000r / min, slowly add the film-forming aid dropwise, after 30min, add T403 polyetheramine and stir for 5min.
[0035] A component: B component = 86:14, before use, add B component to A component and mix evenly, and spray it on the metal substrate, level it for 20 minutes, bake at 70°C for 1 hour...
Embodiment 3
[0037] The formulations of A and B components are shown in Table 3:
[0038]
[0039]
[0040] table 3
[0041] Preparation process of component A: put water-based phenolic modified epoxy resin and anti-sedimentation agent WT-105A into the reactor, pass cooling water, disperse at 1000-1500r / min for 10min, add the formula amount, non-leafing aluminum powder into the reactor , mica powder, barium sulfate, corrosion inhibitor zinc phosphate, the stirring speed is 500-1000r / min, the temperature is 10-50°C, and the fineness is less than 40 microns. After cooling to 25°C, filter and discharge, and the end.
[0042] The preparation process of component B: put the non-ionic hollow fluorocarbon emulsion into the reaction kettle, the stirring speed is 500-1000r / min, slowly add the film-forming aid, after 30 minutes, add 590 fatty amine and stir for 5 minutes.
[0043] A component: B component = 82:18, before use, add B component to A component and mix evenly, and spray on the met...
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