Study On Preparation,Application And Film Formation Mechanism Of Tetion Resin

With the rapid development of waterborne coatings,waterborne coatings with different properties have been applied to different fields.Because the application field is more refined,a single-performance coating cannot meet the market requirements,so researchers have done a lot of research on resin modification.Nanoparticle modification is one of the important research directions.Tetion resin is a new type of environmentally friendly waterborne resin.It adopts titanium dioxide with a single crystal length of 2-10nm,and forms a multi-branch structure through positioning and cross-linking to form a waterborne polymer dispersion.The film-forming mechanism of the resin and the related coating construction technology are currently immature.This work explored the synthesis of Tetion resin,the coating film formation mechanism,and the application of Tetion coatings.?1?Exploring the synthesis of Tetion resin.A silane coupling agent KH-570 was used to synthesize Si O₂/Ti O₂ nanocomposites.X-ray photoelectron spectroscopy?XPS?and infrared spectroscopy?FTIR?confirmed the chemical bonding between Si O₂/Ti O₂composites.Waterborne nano-hybridized hyperbranched acrylic emulsion was finally obtained by grafting waterborne acrylic acid by in-situ polymerization.It can be seen from transmission electron microscope?TEM?and scanning electron microscope?SEM?that the emulsion has a strawberry shape.Waterborne nano-hybridized hyperbranched acrylic emulsion was used as the main film-forming material to prepare a waterborne coating.The salt spray test showed that the waterborne coating had excellent corrosion resistance.The impedance increased from 333?cm² of acrylic coating to 8338?cm².?2?Based on the synthesis of waterborne nano-hybridized hyperbranched acrylic emulsion,a certain amount of graphene oxide was added,and the anticorrosive behavior of the composite coating was explored.The modified-Hummer method was used to make graphene oxide,and the X-ray photoelectron spectroscopy?XPS?was used to quantitatively analyze the graphene oxide.The degree of oxidation of graphene was analyzed.Graphene oxide coatings were prepared by adding different proportions of graphene oxide to waterborne nano-hybridized hyperbranched acrylic emulsions.Through scanning electron microscopy?SEM?,graphene oxide was uniformly distributed in the coating.The anticorrosive behavior of the composite coating was explored through polarization curve and impedance fitting data;the positive effect of graphene oxide on the thermal conductivity of the coating was analyzed by thermal conductivity measurement.Through the above work,the film formation mechanism of nano-hybridized hyperbranched acrylic emulsion was summarized,which has important guiding significance for the study of Tetion resin film formation mechanism.?3?In exploring the formulation of Tetion coatings,a dispersant and film-forming aid suitable for Tetion emulsions were screened based on the intrinsic properties of the coating and the basic properties of the coating.Tetion coating performance has been significantly improved;QM650 plasticizer can greatly improve the film-forming efficiency of Tetion coatings.This has important guiding significance for the application of Tetion coatings.?4?The Tetion emulsion was used as the main film-forming material,and other auxiliary agents and fillers were used to explore its possible use in axle paints,and a water-based axle black paint was prepared.From the performance test results,the emulsion has important use value in axle paint.