PL8006 - ADHESIVES AND SURFACE COATINGS (Syllabus) 2017-regulation Anna University

PL8006 - ADHESIVES AND SURFACE COATINGS (Syllabus) 2017-regulation Anna University

PL8006	ADHESIVES AND SURFACE COATINGS	LPTC

3003

OBJECTIVES: To enable the students to understand the following:

• Types of specialty adhesives and their application
• Adherend surfaces and joint design
• Surface coatings - constituents and classification
• Evaluation of properties of surface coatings

UNIT I		9

Adhesives - concepts and terminology, functions of adhesives, advantages and disadvantages of adhesive bonding, theories of adhesion-mechanical theory, adsorption theory, electrostatic theory, diffusion theory, weak-boundary layer theory, requirements for a good bond, criteria for selection of adhesives.

UNIT II		9

Types of adhesives, structural adhesives, Urethane structured adhesives, Modified acrylic structural adhesives, phenolic adhesives and modifiers, anaerobic adhesives, cyanoacrylate adhesives, hot melt adhesives, pressure sensitive adhesives, RTV Silicone adhesives, sealants, water based adhesives. Specialty adhesives, adhesives in aerospace, adhesive in automobile industry, conductive adhesives, adhesives in building construction, adhesive in electrical industry.

UNIT III		9

Joint design, stress, types of joints, selection of joint detail, joint criteria, surface preparation of adherends-metals, plastics and rubbers. Adhesive bonding process methods for adhesives application and bonding equipment, adhesives for specific substrates, testing of adhesives, adhesive specifications and quality control.

UNIT IV		9

Introduction to surface coatings -Components of paints. Pigments, pigment properties, different types, extenders, solvents, oils, driers, diluents, lacquers, varnishes, paint preparation, formulation, factors affecting pigment dispersion, preparation of pigment dispersion. Different types of paints- classification based on polymeric resin, emulsion, oil and alkyd paints, acrylic paints, epoxy coatings, polyurethane, silicones, formaldehyde based resins, chlorinated rubbers, hydrocarbon resins. Classification based on application, fluropolymers, vinyl resins, appliance furnishes, automotive finishes, coil coatings, can coatings, marine coatings, aircraft coatings.

UNIT V		9

Surface preparation and paint application. Paint properties and their evaluation -mechanism of film formation, factors affecting coating properties, methods used for film preparation - barrier properties, optical properties, ageing properties, rheological properties and adhesion properties of coatings.

TOTAL : 45 PERIODS

OUTCOMES: Upon completing this course, the students

• Will attain the knowledge in mechanism of adhesion
• Will familiarize about the compounding of paints
• Will demonstrate the adhesive types and application

TEXT BOOKS:

1. Gerald L. Schreberger, “Adhesive in Manufacturing”, Marcel Dekker Inc., New York, 1983
2. W.C. Wake, “Adhesion and the Formulation of Adhesives”, Applied Science Publishers, London, 1976.
3. Premamoy Ghosh, Adhesives and Coatings Technology, (2008)
4. Formulating Adhesives and sealants, B. Muller, Walter lath, (2010).

REFERENCES:

1. Swaraj Paul, “Surface Coatings”, John Wiley & Sons, NY, 1985.
2. George Mathews, “Polymer Mixing Technology”, Applied Science Publishers. Shields, “Hand Book of Adhesives”, Butterworths,1984