Aramid nano-fiber corrosion-resistant environmentally-friendly coating material and preparation method thereof
A technology of nanofibers and coating materials, applied in the field of coatings, can solve the problems of inability to achieve complementary effects of modification, poor compatibility of organic resins, and decreased barrier properties of coatings, etc., achieve the best anti-corrosion effect, improve barrier properties, and improve dispersion sexual effect
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Embodiment 1
[0030] The preparation method of the mother liquor of the aramid nanofiber anti-corrosion and environmental protection coating material comprises the following steps.
[0031] 1. Preparation of nano-PPTA.
[0032] (1) Under nitrogen protection, add 100mL of N,N-dimethylacetamide (DMAc) after dehydration into the reaction vessel, add 5g of calcium chloride and 3g of polyvinylpyridinium quaternary ammonium salt under stirring (stirring The speed is 1000r / min), and heated to 80°C for 80 minutes to dissolve calcium chloride and polyvinylpyridine quaternary ammonium salt to obtain a solution of calcium chloride and polyvinylpyridine quaternary ammonium salt. The resulting solution was cooled in cold water to 9 °C for 10 min. Add 5g of p-phenylenediamine into the reaction container. After the p-phenylenediamine is dissolved, cool the reaction container to 0°C, then add 8g of terephthaloyl chloride, increase the stirring speed to 2000r / min, and continue the reaction. The reaction ti...
Embodiment 2
[0038] The preparation method of the mother liquor of the aramid nanofiber anti-corrosion and environmental protection coating material comprises the following steps.
[0039] 1. Preparation of nano-PPTA.
[0040](1) Under the protection of nitrogen, add 100mL of dehydrated N-methylpyrrolidone (NMP) into the reaction vessel, add 4g of magnesium chloride and 2g of cationic polyacrylamide under stirring (stirring speed is 1500r / min), and heat Dissolve magnesium chloride and cationic polyacrylamide at 90°C for 80 minutes to obtain a solution of magnesium chloride and cationic polyacrylamide. The resulting solution was cooled in cold water to 5 °C for 10 min. Add 3g of p-phenylenediamine into the reaction vessel. After the p-phenylenediamine is dissolved, cool the reaction vessel to -10°C, then add 6g of terephthaloyl chloride, increase the stirring speed to 2500r / min, and continue the reaction. Reaction time 10 minutes, the reaction temperature is -10°C, and the stirring is sto...
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