Passivation behavior of nano-materials

Passivation behavior of nano-materials

Introduction

The use of nano materials intended to provide material to the latest properties and assembled to create applications with entirely practical. The coatings industry is the third largest sector after the cosmetics and film coating for the application of nano technology. Upon requests that develop in the coatings are in order to strengthen the surface structures and improvements in formulation. The development of nano materials is crucial applications in the wood, the car, in the field ship and protective finishes that impart a series of unique properties and improvements. The nano scale products that we use are of the order of scale between (1-100nm), silica is the alumina used as hardeners surface, the zirconia as a barrier and hardener, the zinc oxide as a protector environmental, nano clays as a shield anti-glare and UV in tumescent properties (Nalwa, 2003). The silica made by us, in addition to nano structuring of epoxy resins, allows an increase of stiffness, toughness and resistance to high temperatures, thus lengthening the time of aging. At present, our laboratories have experienced a wetting dispersant that improves the organic structure of nanometer the properties of grinding and stability.

Discussion

The nano-structured fillers used in coatings nano-reinforced composites allow the production of paints and varnishes innovative. Ratings on related improving or worsening properties have not yet been thoroughly investigated and therefore accepted and supported definitively by the market.

In the last five years, there is a state of uncertainty that presents different angles, few cultural knowledge on the science of nano materials, skepticism formulators, lack of courage, little systematic research. A slow start also determined by the presence of some interpretations at present world, as it should position itself on the scale of nano metric scale highly efficient length for the manufacture of coatings. However, it is important to understand positioning the stabilization of the dispersion phase and how particles can be maintained as a distinct entity. However, the science of measurement and quantification of the dispersion of nano-metric filler in the matrix polymer has a gap on multiple scales and the corresponding optical properties, noted that ultimately the perfect dispersion of nano fillers, leading to improved characteristics of duration of a material (Leydecker, et. al., 2008). The many research studies and literature presented showed that the use of nano materials always involves properties improvements, when only a few are ready to show up at the bottom or just part of these conditions. The world of nano technology lives a double dualism between those who make high-sounding proclamations and other benefits for the future that took to the field to demonstrate the practical validity of this new science. The nano materials are applied in many areas:

- Conductors and semiconductors;

- Medical equipment;

- Sensors;

- Coatings;

- Agents of catalysis;

- Pesticides

Nano Fillers

Recent research focuses on release of nano-fillers in the systems coatings of various kinds. The filler of nano TiO2, ZnO, such as deflectors / absorbers UV rays, the SiO2, Al2O3, ZrO2 to improve the surface hardness and resistance scratch, the CaCO3 fillers for use in nano structuring of emulsions give greater surface hardness and high resistance to dirt ...