Synthetic polymer emulsion, water-based heavy-duty anti-corrosion coating and preparation method thereof
A technology for synthesizing polymers and emulsions, used in anti-corrosion coatings, coatings, etc., can solve the problems of unstable coating performance and high construction costs, and achieve outstanding weather resistance, low cost, and excellent rust prevention.
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Embodiment 1
[0057] Water-based heavy-duty anti-corrosion coatings are prepared by the following steps:
[0058] Preparation of polymerizable modifiers:
[0059] (1) Take 112.6g of phosphorus pentoxide, divide it into five equal parts, and place it in a drying oven at 50°C for use; mix 257.8g of hydroxyethyl methacrylate and 2g of p-methoxyphenol into the reaction kettle , stir and heat up to 65°C, increase the stirring speed, add one portion of phosphorus pentoxide in turn, control the temperature at 75°C, and finish adding in 1 hour to obtain a mixed solution;
[0060] (2) Raise the temperature of the mixed solution to 110°C for 1 hour, and simultaneously add 555.6 g of octamethylcyclotetrasiloxane and 55.6 g of hydroxyethyl methacrylate dropwise. After 3 hours of completion of the dropwise addition, add 11.2 g of deionized water. ℃ for 2 hours, cooled to obtain a polymerizable modifier.
[0061] Preparation of Synthetic Polymer Emulsions:
[0062] Preparation of pre-emulsion: get 2.5...
Embodiment 2
[0069] Water-based heavy-duty anti-corrosion coatings are prepared by the following steps:
[0070] Preparation of polymerizable modifiers:
[0071] (1) Take 140g of phosphorus pentoxide, divide it into five equal parts, and place it in a drying oven at 50°C for use; mix 257.8g of hydroxyethyl methacrylate and 2g of p-methoxyphenol into the reactor, Stir to raise the temperature to 65°C, increase the stirring speed, add one portion of phosphorus pentoxide one by one, control the temperature at 80°C, and complete the addition in 1 hour to obtain a mixed solution;
[0072] (2) Raise the temperature of the mixture to 100°C for 1.5 hours. At the same time, add 510g of octamethylcyclotetrasiloxane and 50g of hydroxyethyl methacrylate dropwise. After 2 hours, add 13g of deionized water and react at 100°C. 2h, cooling to obtain a polymerizable modifier.
[0073] Preparation of Synthetic Polymer Emulsions:
[0074] Preparation of pre-emulsion: get 2.5g ammonium persulfate and disso...
Embodiment 3
[0081] Water-based heavy-duty anti-corrosion coatings are prepared by the following steps:
[0082] Preparation of polymerizable modifiers:
[0083] (1) Take 130g of phosphorus pentoxide, divide it into five equal parts, and place it in a drying oven at 50°C for use; mix 300g of hydroxyethyl methacrylate and 2g of p-methoxyphenol into the reactor, and stir Raise the temperature to 65°C, increase the stirring speed, add one portion of phosphorus pentoxide one by one, control the temperature at 75°C, and complete the addition in 1 hour to obtain a mixed solution;
[0084] (2) Raise the temperature of the mixed solution to 110°C for 2 hours. At the same time, add 460g of octamethylcyclotetrasiloxane and 36g of hydroxyethyl methacrylate dropwise. After 2 hours, add 20g of deionized water and react at 110°C for 1.5 hours. h, cooling to obtain a polymerizable modifier.
[0085] Preparation of Synthetic Polymer Emulsions:
[0086] The preparation of the pre-emulsion: get 2.5g ammo...
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