Preparation and properties of UV anti-corrosion ink
At present, UV ink has been widely used in inkjet printing, screen printing, offset printing, and other fields. Compared with traditional ink, UV ink has faster curing speed, more stable performance, does not contain volatile organic solvents, and is less harmful to the human body. At present, the corrosion resistance of UV inks used in the market is very poor. This paper uses carbon-carbon double bond “C = C” + fluorine “F” to build anti-corrosion coating, which can greatly improve the corrosion resistance of UV ink. With azodiisobutyronitrile as initiator and tetrahydrofuran as solvent, α-methacrylic acid (MA) and styrene (St) were polymerized to form P(MA-r-St) under the condition of 40 °C magnetic stirring in a water bath after removing oxygen through nitrogen. P(MA-r-St) was esterified with trifluoroacetic acid under the catalysis of diethylenetriamine, and the prepolymer P(MA-r-St)-g-TFA of UV anti-corrosion ink was obtained. Monomer synthesis is done by mixing glycerol and acrylic acid with different molar ratios of 1:1, 1:2, and 1:3, and obtaining monomers with different double bond content through an esterification reaction. The effects of the type and content of photoinitiator, prepolymer, and monomer on the curing speed and contact angle of UV ink were studied, and the best UV curing system was explored. The best UV curing system is ITX with 1% photoinitiator, 50% prepolymer and 40% monomer. The contact angles of deionized water, 0.1 g/ml NaCl, 0.01 g/ml H2C2O4, and 0.01 mol/L NaOH were 94°, 92°, 96° and 98°, respectively. Apply the prepared UV anti-corrosion ink and ordinary UV ink evenly on the cover slide, and bake in the oven at 130 oC for 3 h. After drying, the weight is 0.187 g. The dried cover glass was soaked in 0.01 mol/L NaOH, 0.01 g/ml H2C2O4, 0.01 mol/L HCl, 0.01 mol/L KOH for 5–45 min. After soaking, it was baked in the oven at 130°C for 3 h. After drying, the mass was weighed with a balance, and the maximum mass loss was 7.7%. Compared with ordinary UV ink, the corrosion resistance of UV anti-corrosion ink has been improved, and the corrosion resistance effect is good, which proves that the synthesis of UV anti-corrosion ink is successful.
危险品化学品经营许可证（带存储）