CAJ | 학술논문

主要研究纳米二氧化硅浓缩浆和纳米氧化锌浓缩浆对海洋环氧涂料和聚氨酯涂料性能的影响。通过盐雾试验、氙灯老化试验、人工海洋加速老化试验研究海洋腐蚀环境中纳米复合涂料的耐腐蚀性和抗老化性。通过三步法制备高稳定分散的纳米氧化物浓缩浆，并利用纳米二氧化硅浓缩浆和纳米氧化锌浓缩浆改性海洋船舶环氧底漆和聚氨漆酯船壳漆，制备海洋纳米复合涂料。利用 TEM透射电镜、 FTIR红外光谱、 XPS光电子能谱、光泽度仪、表面接触角测试仪和粘结强度测试仪等研究海洋船舶漆的耐腐蚀性、抗老化性及表面防污性能。纳米二氧化硅浓缩浆的红外光谱分析和粘度测试及纳米氧化锌浓缩浆的透射电镜观察表明高分子分散剂的长碳链位阻效应保证了纳米粒子的均匀稳定分散。不含有纳米二氧化硅浓缩浆的环氧漆粘结强度是4.4 MPa，而含有1.0％纳米二氧化硅浓缩浆的环氧漆粘结强度增加到5.6 MPa。通过氙灯老化试验测试涂层的光泽度变化，纳米复合聚氨漆酯漆的光泽度高于不含纳米氧化锌的普通聚氨漆酯漆光泽度。聚氨漆酯漆在海洋循环加速老化试验后 C/O值减少20.1％，而含有1.2％纳米氧化锌浓缩浆的纳米复合聚氨漆酯漆老化后 C/O 值仅减少10.7％，抗氧化性提高。通过对海洋加速循环老化试验中纳米复合聚氨漆酯漆的测试分析表明1.2％纳米氧化锌浓缩浆提高了海洋船舶聚氨酯面漆的抗老化性和表面接触角。纳米浓缩浆可增强纳米复合涂料在海洋重腐蚀环境中耐腐蚀、抗老化等性能。
주요연구납미이양화규농축장화납미양화자농축장대해양배양도료화취안지도료성능적영향。통과염무시험、선등노화시험、인공해양가속노화시험연구해양부식배경중납미복합도료적내부식성화항노화성。통과삼보법제비고은정분산적납미양화물농축장，병이용납미이양화규농축장화납미양화자농축장개성해양선박배양저칠화취안칠지선각칠，제비해양납미복합도료。이용 TEM투사전경、 FTIR홍외광보、 XPS광전자능보、광택도의、표면접촉각측시의화점결강도측시의등연구해양선박칠적내부식성、항노화성급표면방오성능。납미이양화규농축장적홍외광보분석화점도측시급납미양화자농축장적투사전경관찰표명고분자분산제적장탄련위조효응보증료납미입자적균균은정분산。불함유납미이양화규농축장적배양칠점결강도시4.4 MPa，이함유1.0％납미이양화규농축장적배양칠점결강도증가도5.6 MPa。통과선등노화시험측시도층적광택도변화，납미복합취안칠지칠적광택도고우불함납미양화자적보통취안칠지칠광택도。취안칠지칠재해양순배가속노화시험후 C/O치감소20.1％，이함유1.2％납미양화자농축장적납미복합취안칠지칠노화후 C/O 치부감소10.7％，항양화성제고。통과대해양가속순배노화시험중납미복합취안칠지칠적측시분석표명1.2％납미양화자농축장제고료해양선박취안지면칠적항노화성화표면접촉각。납미농축장가증강납미복합도료재해양중부식배경중내부식、항노화등성능。
The aim of this paper is to investigate the effect of SiO 2 nano-concentrate and ZnO nano-concentrate on proper-ties of epoxy and polyurethane marine coating .The corrosion-inhibiting and anti-aging properties of composite nano-coat-ings used in marine environment were investigated by the salt spray test , xenon lamp aging test, ocean accelerated cycle aging test.The stable well-dispersed nano-concentrates were prepared by three-step method, and epoxy and polyurethane marine nano-coatings were modified by SiO2 nano-concentrate and ZnO nano-concentrate.The work has investigated corro-sion resistance, weathering resistance and antifouling property of marine nano-coating by use of transmission electron mi-croscopy (TEM), fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), gloss meter and measuring instrument of surface contact angle.The FTIR analysis and viscosity measurement of SiO2 nano-concen-trates and TEM observation of ZnO nano-concentrates demonstrate that the well-dispersed state of nanoparticles can be at-tributed to the strong steric effect of long carbon chains of polymer dispersing agent .The bonding strength of epoxy nano-coating with 1.0%SiO2 nano-concentrate increases from 4.4 MPa of epoxy coating without nano-concentrate to 5.6 MPa. The analytic results of salt spray test demonstrate that 1.0%SiO2 nano-concentrates improve the resistance of epoxy nano-coating to salt spray.The gloss measurement in the xenon lamp aging test demonstrates that gloss of polyurethane nano-coating is higher than that of polyurethane coating without nanoparti-cles.The C/O ratio of polyurethane coating without nano-con-centrate after accelerated cycle aging test dramatically decreases 20.1% while the C/O ratio of polyurethane nano-coating with 1.2% ZnO nano-concentrate after aging test only decreases 10.7%.The measurements of gloss and surface contact angle during ocean accelerated cycle aging test indicate that 1.2%ZnO nano-concentrations greatly enhance the anti-aging and surface contact angle of polyurethane coating .In conclusion, the nano-concentrates can improve corrosion resistance and weathering resistance of nano-coatings in marine heavy corro-sion environment.