Organic coatings in the process of application of glass surface, the durability is the key of organic coating to improve various properties of glass (mainly to improve the chemical, physical and optical properties that three aspects of the glass).
Lee Donghun and some other people use the DRIFT optical technology such as the use of different study carboxyl-containing polymer and glass surfaces with each other mechanical action, found that when the oleic acid applied to SLS glass (sodium carbonate / calcium carbonate / silicate glass) when, in oleic acid -COOH dissociation SLS adsorbed on the glass surface, and formed a number of different types of metal chelate compounds. Some metal ions such as Al3 + and COOH occurs after chelate than other ions such as Na +, Ca2 + and other chelating ion is more firmly bonded to the silicate network structure. This shows that the glass surface of the metal ion species contained in the glass surface can determine some properties such as lubricity and hydrophobic properties.
Air humidity and other side effects may destroy the interaction between organic and glass, which change or reduce the performance of key compounds, thereby affecting the coating's durability. Vadim V Krongauz study by electron microscopy and other high-humidity environment under the influence of organic polymers in the glass surface of the adhesion phenomenon, and confirmed that moisture on the glass surface of the coating adhesion is very much affected.
Glassware surface coating is scratch and abrasion resistance an important indicator to measure the quality of paint. In general, Zinc oxide the use of a single coating to improve scratch and wear resistance is limited. To this end, Hozumi A and so developed a kind of UV-curable primer coating is to heat cure coating for the finish of the double coating, aims to improve scratch and abrasion resistance coatings. Wear test results show that the coating system, highly scratch wear, high hardness, surface hardness and inorganic glass close.
Scratch resistant coating to measure performance, do the scratch test often requires the use of instruments, such as pencil hardness method, Taber abrasion test method and Revetest scratch tester and so on. Currently, optical microscopy, atomic force microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and some micro-coating material has been widely used means of micro-structure and performance evaluation.
Conventional coating process, including brushing, spraying and coating, etc., and later appeared in succession sol - gel method, Neodymium fluoride electrostatic spraying and electrophoresis other processes. Coating process with a variety of different characteristics, so should be based on workpiece material, specifications, size, shape, construction, environment, quality requirements and paint utilization and other factors considered.
Sol - gel method as a new coating process started early for the glass surface of the coating, with a low-cost, easy to operate, can be applied to metal, glass and porcelain and other surface coating. At the same time, the use of sol - gel technology to prepare the coating substrate can significantly improve the mechanical, thermal, optical, electrical and other properties, such coatings also have a wear resistance, peel resistance, the substrate layer and the protection against external influences and other functions; advantage is to allow the glass at a temperature below the melting point of silicate of use, to ensure the coating on the glass surface of the film when the smaller particles by (<100nm =, so that uniform coating, easy to metal oxides paint coating on the glass substrate. Nikoli L and other research SiO2 sol - gel coating on the base strength of the glass substrate, the results show, SiO2 coating microstructure depends on SiO2 sol structure. Vroon ZAEP to alkoxide such as solvent were prepared vanadium oxide and tungsten oxide coatings, these two K-glass surface of the paint system in the membrane, we found a good uniform vanadium oxide film, and has excellent electrochromic properties in the vanadium oxide / titanium oxide coatings When the titanium dioxide content of 40% or more, the film charge capacity can be achieved 45mc/cm2.
Currently, the sol - gel method can be applied to the production of single-component or multi-component coatings, especially organic - inorganic hybrid coatings, and transparent conductive and antistatic coatings, paints and dyes fluoride composite materials, these paint coating mounted on the glass surface, glass can have color, anti-reflective, selective reflection, selective absorption, increasing slip, anti-fouling properties. Source: