RAJAN RAHEJA GROUP Industrial Products & Natural Resources H & R JOHNSON (INDIA) RAJAN RAHEJA GROUP THE STEPPING STONE TO YOUR SUCCESS

The offering of include a complete range of vitrified tiles. Industrial Products & Natural Resources H & R JOHNSON (INDIA) H & R Johnson (India), A Division of Prism Cement Limited is a part of the Rajan Raheja Group The company has strong brands comprising of Johnson, Marbonite, Endura & Johnson Ceramics International. offers glazed floor and wall tiles, laminate and engineered wood floorings, kitchen, sanitaryware, bathroom accessories and bath fittings. The offering of include a complete range of vitrified tiles. brand offers industrial, specialised tiles and industrial products THE STEPPING STONE TO YOUR SUCCESS

LEAD-ACID BATTERIES SAFETY Industrial Products & Natural Resources H & R JOHNSON (INDIA) LEAD-ACID BATTERIES SAFETY Hydrogen gas is generated during the charging cycle Only 4% of Hydrogen in air is enough to start catastrophic ignition Effective dispersion of hydrogen is a serious safety concern MAINTAINING ELECTROLYTE LEVELS Higher outgassing would result in greater electrolyte loss Frequent watering could increase the chances of contamination of the electrolyte Variation in electrolyte levels could affect the battery performance THE STEPPING STONE TO YOUR SUCCESS

ZERO MAINTENANCE BATTERIES Industrial Products & Natural Resources H & R JOHNSON (INDIA) ZERO MAINTENANCE BATTERIES Zero-maintenance batteries have revolutionized the lead - acid battery industry One of the key components is a flame arrestor with tailored pore size and pore volume THE STEPPING STONE TO YOUR SUCCESS

FLAME ARRESTORS KEY FUNCTIONS Industrial Products & Natural Resources H & R JOHNSON (INDIA) FLAME ARRESTORS KEY FUNCTIONS Venting: Tailored pore size and pore volume ensures controlled venting of gases, heat developed especially during charging, preventing the build-up of gases that can otherwise lead to explosion. POLYMER CERAMIC Manufactured by fusion technique, pore size and pore volume can vary significantly Bond formation is by sintering, and not fusion; the pore size and pore volume can be controlled precisely Variation in pore size and pore volume can significantly affect the permeability. Uniform pore size and porosity leads to precise permeability Pore volume 30 – 35% Pore volume 45 – 50% Pore size 100 – 200 microns Pore size 150 – 200 microns THE STEPPING STONE TO YOUR SUCCESS

FLAME ARRESTORS KEY FUNCTIONS Industrial Products & Natural Resources H & R JOHNSON (INDIA) FLAME ARRESTORS KEY FUNCTIONS Flame arresting:  In an event of sparking outside a battery, they prevent the propagation/ ingress of flame from outside to inside by its matrix of uniform pores that quench the flame. This provides an extinguishing barrier to the ignited flame. THE STEPPING STONE TO YOUR SUCCESS

FLAME ARRESTORS KEY FUNCTIONS Industrial Products & Natural Resources H & R JOHNSON (INDIA) FLAME ARRESTORS KEY FUNCTIONS Zero top-up: Small & uniform pores along with the water repellent property prevents depletion of electrolyte through the pores. Water vapour condenses and falls back into the battery. THE STEPPING STONE TO YOUR SUCCESS

Strength POLYMER CERAMIC Limited strength Industrial Products & Natural Resources H & R JOHNSON (INDIA) Strength POLYMER CERAMIC Limited strength Crushing strength is 150 – 200 kg/cm2. Can be easily inserted without breakage THE STEPPING STONE TO YOUR SUCCESS

Resistance to sulphuric acid Industrial Products & Natural Resources H & R JOHNSON (INDIA) Resistance to sulphuric acid POLYMER CERAMIC Polypropylene is susceptible to liquid oxidative degradation leading to charring and brittle failure The ceramic bond is formed by sintering at very high temperatures, and not by alkali fusion. The absence of alkali makes the ceramic discs highly resistant even to highly corrosive strong acids even at elevated temperatures. THE STEPPING STONE TO YOUR SUCCESS

Industrial Products & Natural Resources H & R JOHNSON (INDIA) CONCLUSIONS Owing to its higher pore volume and uniform permeability, it is possible to reduce the number of vents Excellent corrosion resistance of ceramics could translate into a much lower battery maintenance and higher battery life. Number of warranty claims could come down as a result SAFETY IS GUARANTEED UNDER EXTREME CIRCUMSTANCES ! Much better safety and improved performance could result in an increased market share for the battery manufacturer THE STEPPING STONE TO YOUR SUCCESS

STONE TO YOUR SUCCESS THE STEPPING Industrial Products & Natural Resources H & R JOHNSON (INDIA) ( A DIVISION OF PRISM CEMENT LIMITED.)