摘要
用γ-氨丙基三乙氧基硅烷(KH-550)将SBA-15分子筛接枝到氧化石墨烯上制备功能填料,并将其填充到水性环氧树脂中制备复合涂层。采用FTIR、XRD、氮气吸附脱附和TEM对填料进行了表征;采用电化学阻抗谱(EIS)、盐雾实验和附着力测试等方法对不同填料添加量涂层的防腐性能及力学性能进行了表征。实验结果表明:当功能填料添加质量分数为1.0%(占体系总质量)时,涂层电化学阻抗值达到4×10^8Ω·cm^2,同时具有最佳耐盐雾性能以及附着力性能。复合涂层的防腐性能明显优于纯环氧涂层,这主要是因为功能填料的孔/片协同结构有效地延缓了腐蚀粒子到达金属基材表面的时间。
Functional filler was prepared by grafting SBA-15 molecular sieve onto graphene oxide withγ-aminopropyltriethoxysilane(KH-550)and then filling it into a water-based epoxy resin to prepare a composite coating.The filler was characterized by FTIR,XRD,nitrogen adsorption–desorption isotherm and TEM.The corrosion resistance and mechanical properties of the coatings with different amount of filler were characterized by electrochemical impedance spectroscopy(EIS),salt spray test and adhesion test.The experimental results showed that when adding 1.0%functional filler(based on the total mass of system),the composite coating showed the highest impedance value of 4×10^8·cm^2,and had the best salt spray resistance and adhesion performance.The anticorrosive property of the composite coating was superior to that of pure epoxy coating,which was mainly because the hole/sheet synergistic structure of the functional filler effectively delayed the time of the corrosion particles reaching the surface of the metal substrate.
作者
王娜
高慧颖
张静
李龙
秦野
WANG Na;GAO Hui-ying;ZHANG Jing;LI Long;QIN Ye(Advanced Manufacturing Institute of Polymer Industry (AMIPI),Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Sino-Spanish Advanced Materials Institute,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2019年第7期1476-1482,共7页
Fine Chemicals
基金
辽财指高端人才([2016]864)
辽宁省高校创新人才计划([2017]053)
