摘要
研究了氧化亚铜对新型封端聚氨酯(BPU)/环氧树脂(EP)共混物涂料的拉伸强度、剪切强度和表面防污性能的影响。拉伸、剪切实验结果表明,涂层的拉伸强度和剪切强度随着氧化亚铜的增加均有所下降;加入纳米氧化亚铜对涂层的影响更加明显,涂层的拉伸强度和剪切强度均大幅下降;铜离子渗出率测定结果表明,随着氧化亚铜用量的增加,铜离子渗出率增大,用纳米氧化亚铜替代氧化亚铜效果并不明显,稳定时的铜离子渗出速率变化不大,用聚乙二醇(PEG)硅烷处理的铜离子渗出率高于未经处理的氧化亚铜的渗出率;透射电镜分析表明,经硅烷处理后的氧化亚铜在树脂中分散性较好,而纳米氧化亚铜和氧化亚铜均出现一定程度的团聚现象;实海挂板试验结果表明,涂料中添加氧化亚铜、纳米氧化亚铜和经PEG硅烷改性后的氧化亚铜的涂层防污性能依次增强,当80phr氧化亚铜的防污效果较好。
The influence of cuprous oxide( Cu2O) on tensile strength,shear strength and surface properties of blocked polyurethane/epoxy( BPU/EP) resin blend coatings was investigated. The results of tensile,shear experiments show that the tensile and shear strength of the coatings decrease as the Cu2 O amount increases; the effect of adding nano-cuprous oxide( nano- Cu2O) in coatings is even obvious. The results of the copper-ion release rate show that the copper-ion release rate increases as the Cu2 O amount increases and the replacement affection of nano- Cu2 O is not obvious,and the copper-ion release rate of the Cu2 O modified with polyethylene glycol( PEG) silane is higher than that of the untreated one. TEM images show that in the resin,nano- Cu2 O and Cu2 O appear a certain degree of reunion phenomenon but dispersion of cuprous oxide modified with PEG silane in the resin is better. The panel test results show that the effect of Cu2 O,nano- Cu2 O and the Cu2 O modified with PEG silane on the antifouling performance of coatings gradually is improved and the antifouling property of 80 phr cuprous oxide is best.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2015年第4期57-60,共4页
Polymer Materials Science & Engineering
