摘要
采用异氰酸酯封端的聚氨酯与纳米粒子增韧环氧树脂,利用耐磨填料(包括硬质填料和减阻填料),降低涂层磨耗量及表面摩擦系数,使涂层具有优异的耐磨性,从而满足极地低温环境下环氧防腐涂层的耐冲击性和耐磨性要求。通过傅立叶变换红外光谱(FT-IR)、三维光学显微镜、扫描电镜(SEM)研究了增韧环氧树脂的结构,并探究了聚氨酯、纳米二氧化钛、耐磨填料的添加量对涂层拉伸强度、断裂伸长率、耐冲击性、磨耗量及摩擦系数等柔韧性和耐磨性的影响。结果表明:采用聚氨酯与纳米二氧化钛增韧环氧树脂能有效提高涂层的断裂伸长率、耐冲击性及拉伸强度,同时在硬质填料和减阻填料的协同作用下,涂层在低温环境中具有优异的耐磨性、耐冲击性及柔韧性,可适用于极地低温环境下的船舶防护。
The epoxy resin was toughened by polyurethane and nano particles,and the wear loss and the surface friction coefficient of the coatings was reduced by addition of wear resistant fillers(including hard fillers and drag reducing fillers),to provide the coatings excellent wear resistance,meeting the requirement in low temperature polar environment for impact resistance and wear resistance.The structure of toughened epoxy resin was characterized by FT-IR,3D rotational microscope and SEM.The effects of the amount of polyurethane/nano titanium dioxide/wear resistant fillers on the toughness and wear resistance of the coatings,such as tensile strength,elongation at break,impact strength,wear loss value and friction coefficient,were discussed.The results showed that the epoxy resin toughened by polyurethane and nano titanium dioxide could effectively improve the elongation,impact strength and bending strength at break of the coatings.At the same time,the coating could provide excellent wear resistance,impact resistance and flexibility in low temperature environment under the synergistic effect of hard filler and drag reducing filler,which could be applied to the ship protection in low temperature polar environment.
作者
陈凯锋
亓海霞
张心悦
张黎黎
梁宇
Chen Kaifeng;Qi Haixia;Zhang Xinyue;Zhang Lili;Liang Yu(Xiamen Advanced Materials Academy of Luoyang Ship Material research Institute,Xiamen,Fujian 361101,China;Science and Technology on Marine Corrosion and Protection Laboratory,Qingdao,Shandong 266101,China)
出处
《涂料工业》
CAS
CSCD
北大核心
2020年第10期27-32,共6页
Paint & Coatings Industry
基金
工信部高技术船舶项目(工信部装函[2018]473号)
七二五所科技创新项目。
关键词
极地船舶
低温增韧
耐磨
polar ship
low temperature toughening
wear resistance
