Anti-corrosion polycarbonate sheet and preparation method thereof
A technology of polycarbonate board and polycarbonate, which is applied in the direction of anti-corrosion coatings and coatings, and can solve the problems of non-corrosion resistance and easy aging
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Embodiment 1
[0033] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:
[0034] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;
[0035] The second step is to mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, stir and mix at a speed of 100r / min for 1h, and obtain seed emulsion;
[0036] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm at 70°C for 4 hours. After the reaction, adjust the pH value to 8 with 25% ammonia water by mass fraction, and then cool to room temperature to obtain an anti-corrosion coating. .
[0037] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacrylate, modi...
Embodiment 2
[0045] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:
[0046] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;
[0047] The second step is to mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, and stir and mix at a speed of 150r / min for 1h to obtain seed emulsion;
[0048] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm for 5 hours at 70°C. After the reaction, adjust the pH value to 8 with ammonia water with a mass fraction of 25%, and then cool to room temperature to obtain an anti-corrosion coating. .
[0049] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacryl...
Embodiment 3
[0057] The present embodiment provides a kind of anticorrosion coating, and preparation steps are as follows:
[0058] Step 1: Stir and mix the emulsifier, monomer and 2 / 3 of the total mass of deionized water at 25°C for 30 minutes to obtain a pre-emulsion;
[0059] In the second step, mix the remaining deionized water and sodium bicarbonate, add 1 / 3 of the pre-emulsion, heat up to 70°C, add 1 / 2 of the total mass of the initiator solution, stir and mix at a speed of 200r / min for 1h, and obtain seed emulsion;
[0060] The third step is to add the remaining pre-emulsion and initiator solution to the seed emulsion, and keep it warm for 6 hours at 70°C. After the reaction, adjust the pH value to 8 with ammonia water with a mass fraction of 25%, and then cool to room temperature to obtain an anti-corrosion coating. .
[0061] The emulsifier is a mixture of alkylphenol polyoxyethylene ether and sodium lauryl sulfate at a mass ratio of 1:1, and the monomers are methyl methacrylate,...
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