纳米炭黑复合涂料的制备及其耐蚀性能

纳米炭黑复合涂料的制备及其耐蚀性能;纳米炭黑;复合涂料;制备;耐蚀性

Preparation and Anticorrosion Behavior of Nanometer Carbon Black Composite Coating

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.