Preparation method of water-based polyurethane acrylate (WPUA) silicon dioxide photocureable coating
A urethane acrylate and light-curing coating technology, applied in the direction of coating, can solve the problems of affecting promotion, easy agglomeration of emulsions, poor stability, etc., and achieve the effects of excellent mechanical properties, simple preparation process, and improved performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0014] In a container equipped with a stirring device, add 0.6mol absolute ethanol, the 0.1mol Add n-butyl silicate into the container, stir at room temperature for 1 hour, then raise the temperature to 50°C and slowly drop into the container containing 0.01mol Hydrochloric acid in deionized water 0.6mol , react for 1h to get n-butyl silicate sol.
[0015] Add 16.664g of polyether polyol (NJ-210) and 2.316g of dimethylol propionic acid (DMPA) into a 500mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and feeding device; add 1.68g N-methylpyrrolidone (NMP) solvent, raise the temperature of the system to 60°C, add 9.99g of isophorone diisocyanate (IPDI), dropwise add catalyst 0.0876g of dibutyltin dilaurate (T-12), stir for 30min Finally, raise the temperature of the system to 80°C (if the viscosity of the system is too high, add a certain amount of acetone), continue the reaction for 4 hours, then lower the temperature to 60°C, add 3.348g of h...
Embodiment 2
[0017] In a container equipped with a stirring device, add 0.6mol absolute ethanol, the 0.1mol Add n-butyl silicate into the container, stir at room temperature for 1 hour, then raise the temperature to 50°C and slowly drop into the container containing 0.01mol Hydrochloric acid in deionized water 0.6mol, react for 1h to get n-butyl silicate sol.
[0018] Add 16.394g of polyether polyol (NJ-220), 1.639g of N-methylpyrrolidone (NMP) and 1.228g of dihydroxy Add methacrylic acid (DMPA) into the reaction device, raise the temperature of the system to 60°C, add 6.938g of isophorone diisocyanate (IPDI), dropwise add the catalyst 0.098g of dibutyltin dilaurate (T-12), After stirring for 30 minutes, raise the temperature of the system to 80°C (if the viscosity of the system is too high, add a certain amount of acetone), continue the reaction for 4 hours, then lower the temperature to 60°C, add 3.611g of hydroxyethyl methacrylate (HEMA), After reacting for 5 hours, lower the te...
Embodiment 3
[0020] In a container equipped with a stirring device, add 0.6mol absolute ethanol, the 0.1mol Add n-butyl silicate into the container, stir at room temperature for 1 hour, then raise the temperature to 50°C and slowly drop into the container containing 0.01mol Hydrochloric acid in deionized water 0.6mol , react for 1h to get n-butyl silicate sol.
[0021] Add 13g of polyether polyol NJ-210, 1.528g of dimethylol propionic acid (DMPA) and 1.3g of N-methyl Pyrrolidone (NMP) solvent, raise the temperature of the system to 60°C, add 10.823g of isophorone diisocyanate (IPDI), dropwise add the catalyst 0.051g of dibutyltin dilaurate (T-12), stir for 30min, and put the system The temperature rises to 80°C (if the viscosity of the system is too high, a certain amount of acetone can be added), after continuing the reaction for 4 hours, the temperature is lowered to 60°C, and 6.338g of hydroxyethyl methacrylate (HEMA) is added, and the temperature is lowered after 5 hours of reac...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More