JNTUK R20 B.Tech Mechanical 1-2 Engineering Chemistry Material/ Notes PDF Download

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JNTUK R20 B.Tech Mechanical 1-2 Engineering Chemistry Material/ Notes PDF Download: The JNTUK R20 B.Tech 1-2 Engineering Chemistry Material offers extensive knowledge on essential topics for engineering students. It covers a wide range of subjects, from explaining the importance of plastics in everyday household items to exploring advanced materials such as composites (FRP) used in aerospace and automotive sectors. The material also delves into the basics of building electrochemical cells, batteries, and fuel cells, providing valuable insights into their real-world uses. Additionally, it discusses the process of corrosion and methods to prevent it, which are crucial for preserving the strength and durability of engineering structures.

JNTUK R20 B.Tech 1-2 Chemistry Material – Units

Unit 1 Syllabus PDF Download | JNTUK R20 B.Tech 1-2 Chemistry Material

Polymerization: Introduction, methods of polymerization (emulsion and suspension), mechanical properties. Plastics: Compounding, fabrication (compression, injection, blown film, and extrusion), preparation, properties and applications (PVC, polycarbonates, and Bakelite), mention some examples of plastic materials used in electronic gadgets, recycling of e-plastic waste (waste to wealth).

Elastomers: Introduction, preparation, properties, and applications (Buna S, Thiokol and polyurethanes).

Composite materials: Fiber-reinforced plastics, conducting polymers, biodegradable polymers, biopolymers, biomedical polymers.

Unit 2 Syllabus PDF Download | JNTUK R20 B.Tech 1-2 Chemistry Material

Electrochemical Cells and Corrosion

Single electrode potential, electrochemical series and uses of series, standard hydrogen electrode, calomel electrode, construction of glass electrode, batteries (Dry cell, Li-ion battery, and zinc air cells), fuel cells (H2-O2, CH3OH-O2, phosphoric acid, and molten carbonate).

Corrosion: Definition, theories of corrosion (chemical and electrochemical), galvanic corrosion, differential aeration corrosion, stress corrosion, galvanic series, factors influencing the rate of corrosion, corrosion control (proper designing and cathodic protection), Protective coatings (surface preparation, cathodic coatings, anodic coatings, electroplating and electroless plating [nickel]), Paints (constituents, functions, and special paints).

Unit 3 Syllabus PDF Download | JNTUK R20 B.Tech 1-2 Chemistry Material

Material Chemistry

Part- A: Nanomaterials: Introduction, sol-gel method, characterization by (Brunauer Emmet Teller [BET]), (scanning electron microscopy [SEM]) and (transmission electron microscopy [TEM]) with example (TiO2), applications of graphene and fullerenes, carbon nanotubes (types, preparation and applications)

Thermal analysis techniques: Instrumentation and applications of thermogravimetric analysis (TGA), differential thermal analysis (DTA), and differential scanning calorimetry (DSC).

Part-B: Refractories: Definition, classification, properties (refractoriness, refractoriness under load, porosity and thermal spalling), failure of refractories.

Lubricants: Definition, mechanism of lubricants, properties (definition and importance).

Cement: Constituents, manufacturing, parameters to characterize the clinker formation: lime saturation factor (LSF), silica ratio (SR) and alumina ratio (AR), chemistry of setting and hardening, deterioration of cement.

Unit 4 Syllabus PDF Download | JNTUK R20 B.Tech 1-2 Chemistry Material

Fuels

Introduction, calorific value, higher calorific value, lower calorific values, problems using Dulong’s formula, proximate and ultimate analysis of coal sample and their significance, numerical problems, petroleum (refining-cracking), synthetic petrol (Fischer Tropsch and Bergius), petrol knocking, diesel knocking, octane and cetane ratings, anti-knocking agents, Introduction to alternative fuels (Biodiesel, ethanol, methanol, natural gas, liquefied petroleum gas, compressed natural gas), Flue gas analysis by Orsat apparatus, rocket fuels.

Unit 5 Syllabus PDF Download | JNTUK R20 B.Tech 1-2 Chemistry Material

Water Technology

The hardness of water, determination of hardness by complexometric method, boiler troubles (priming and foaming, scale formation, boiler corrosion, caustic embrittlement), internal treatments, softening of hard water (zeolite process and related sums, ion exchange process), treatment of industrial wastewater, potable water and its specifications, steps involved in purification of water, chlorination, breakpoint chlorination-desalination (reverse osmosis and electro dialysis).

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JNTUK R20 B.Tech 1-2 Chemistry Notes – Outcomes

• Delve into computational chemistry for a deeper understanding of molecular structures and interactions.
• Discover the realm of molecular machines to grasp their functionalities and diverse applications.