【摘要】 通过表面接枝改性技术,得到了能在油性体系中分散的纳米炭黑粒子。透射电镜(TEM)测试结果表明,聚乙烯醇接枝改性和超声波分散有效地阻止了炭黑粒子的团聚,炭黑粒子的尺寸为30~80nm。在机械搅拌和超声场共同作用下,使纳米炭黑粒子均匀地分散到醇酸调和漆和醇酸防锈漆中,制得纳米炭黑复合涂料。重量法腐蚀实验与阳极极化曲线测试结果均表明,纳米炭黑粒子加入后,醇酸漆的抗蚀能力提高,单位面积腐蚀增重减小10%以上,阳极腐蚀电流降低约1个数量级,腐蚀电位正移约200mV至500mV。更多还原

【Abstract】 Nanometer carbon black with excellent dispersion in oily systems was obtained via surface grafting modification. TEM images show that surface grafting modification and ultrasonic field prevent carbon black from coagutation effectively. The particle size was about 24 nm to 300 nm and the parficles dispersed uniformly in the coating. Nanometer carbon black dispersion system in ultrasonic field was put into alkyd resin coating and alkyd resin antirust coating respectively, and then nanometer composite coating was obtained by means of ultrasonication and (mechanical) agitation. Corrosion experiment via gravimetric method and anode polarization experiment showed that the resistance to corrosion of the alkyd resin coating was improved by the nanometer carbon black, and its anodic corrosion current was reduced to about 1/10 that of alkyl resin coating without nanometer carbon black, and its corrosion potential increased by about 200 mV to 500 mV.更多还原