NANOFILLERS IN SURFACE COATINGS: A REVIEW

Nanofillers since many years have a high significance in various polymer based industries. Nanocoatings are coatings that are produced by usage of some component at nanoscale to obtain desired properties. Much research is being done to develop effective material combinations of polymer nanocomposites with tailored properties. Nanocomposite is a multiphase solid material where at least one of the phases should have dimensions of less than 100 nm. The properties of composites are largely dependent on the area of interface surface and the intensity of intermolecular interaction between the materials of the matrix and the filler. Nanoscale dispersion of filler or controlled nanostructures in the composite can introduce new physical properties and novel behaviors that are absent in the unfilled matrices. This paper reviews various types of fillers used for different applications in coatings such as anticorrosion resistant paints, ceramic coatings, super hydrophobic coatings, self-healing coatings, sol gel coatings, etc

POLYMERIC PARTICLE BOARD:A SUSTAINABLE SUBSTITUTE TO WOODEN BOARDS

The aim of this paper is to give overview about particleboards and its development.Particle boards are wood composite prepared from wood waste , stalks, wood shaving, etc and polymeric resin.Urea-Formaldehyde(UF) and Phenol Formaldehye (PF) being widely used resin for preparation of particle board.Here we discuss about different types wood and resin used for manufacture of particleboard.The effect of different woods and resin on properties like internal bond strength, thickness swelling, modulus of rupture, modulus of elasticity and water absorption.Various chemical additives used to modify the properties of particle board and also fire retardant property of particle board.World is leading towards sustainable development thus use of particle board can help us in achieving a small part of it.