Prof. A.S.Khanna
Biography
Prof. A.S.Khanna, retired from the prestigious Indian Institute of Technology, Bombay serving for 27 years, guided 27 Ph.D?s and, more than 150 Master?s and B.Tech. projects on Topics such as Organic Paint Coatings, Smart Coatings, Nano-technology and Graphene manufacturing and High Temperature Corrosion. He has extensive publication list with more than 350 papers in peer reviewed International Journals, conference proceedings and technical magazines, thru? which he has got about 4500 Citations. He has also written three books one on organic coatings and other two on high temperature corrosion.
At present he is Chairman SSPC India, a professional body focusing on Surface Engineering and coatings and Director, Khanna Paint Testing Laboratory, NABL accredited. He is well travelled and has got several National and Internal awards. He is fellow of Humboldt Foundation, Germany, Royal Norwegian Science and Technology and Japan Key Centre.
Research Interest
Prof. A.S. Khanna?s research focuses on organic and smart coatings, nanotechnology and graphene manufacturing, high-temperature corrosion, and advanced surface engineering for industrial applications.
Abstract
An Overview on the use of Nano Technology in enhancing the properties of Paint Polymers
Paint Coatings has a very big National and International market. Though, paint coatings are defined as a mixture of resin, pigments and additives, however this definition further decides the role of various paint system in various classifications, conventional, high performance, functional, smart, required for several specific industrial applications. One of the drastic changes which has been seen in many recent paint formulations has been due to the use of Nano-technology in paint coatings. Many functional and smart coatings work on the introduction of nano-additives or using special polymers in nano range. Specialised coatings such as hydrophobic coatings which help to make self-cleaning coatings use nano particles to create very low surface roughness, self-healing coatings where nano particles help in creating nano size cells which reach instantly the broken areas and heal in no time. Use of several ceramic nano-particles such as nano ZnO, Fe2O3, TiO2, SiO2 are known to create such modifications. Graphene which is a nano 2D layer of carbon (graphite), creates wonderful paint system by enhancing the corrosion resistance and mechanical properties of paint coatings.
This paper will discuss a systematic methodology to define nano-particles, their identification, detailed characterization and finally the method to make a nano-modified paint system using several examples. The paper will also discuss standard that explains systematically this procedure. The paper will discuss examples of several nano-paint systems synthesised in our laboratory such as self-cleaning, self-healing, graphene-based paint systems and their excellent performance. The paper will also discuss the simple lab methods to synthesise nano particles.
