CAJ | 학술논문

以微米/纳米二氧化钛(TiO_2)为复合填料制备了聚氨酯防腐涂层,采用电化学阻抗谱(EIS)评估含不同用量纳米TiO_2涂层在0.5 mol/L氯化钠溶液中的耐腐蚀性,结果表明,纳米二氧化钛能有效提高涂层的抗腐蚀能力,其适宜用量为1.0%～1.5%.热分析(包括DSC和TG)结果表明,在有大尺度填料存在的条件下,添加纳米二氧化钛对涂层的热稳定性影响不大.
이미미/납미이양화태(TiO_2)위복합전료제비료취안지방부도층,채용전화학조항보(EIS)평고함불동용량납미TiO_2도층재0.5 mol/L록화납용액중적내부식성,결과표명,납미이양화태능유효제고도층적항부식능력,기괄의용량위1.0%～1.5%.열분석(포괄DSC화TG)결과표명,재유대척도전료존재적조건하,첨가납미이양화태대도층적열은정성영향불대.
Using nano/micro size composition as filler, a series of anticorrosive polyurethane coatings with different contents of nano-TiO_2 particles were prepared. The anticorrosion performance of the coatings in 0.5 mol/L NaCl solution was evaluated by electrochemical impedance spectroscopy (EIS). The results indicated that the nano-TiO_2 can effectively improve the corrosion resistance of the coating, and its suitable dosage is in range of 1.0%-1.5%. The experiment results of thermal analyses including DSC and TG proved that the nano-TiO_2 does not significantly decrease the thermal stability of polyurethane coating under the condition that there exists large-size filler.