Manufactured substances in industry 2024 NAME : CELESTE HAN WEI SAN CLASS : 4S3 TEACHER NAME : PUAN CHAN YOKE BEE
Major component of glass Silica (silicon dioxide SiO2) Soda(sodium carbonate , Na2CO3) Limestone (calcium carbonate , CaCO3) Boron oxide (B2O3) Aluminium oxide ( AI2O3) Lead (II) oxide PbO
Main characteristic of glass Hard but brittle Chemically inert Transparent Heat Waterproof insulator Electrical insulator
Types of glasses Types of glass properties Uses Fused silica glass High melting poin Make telescope lens Soda -lime glass Low melting point Make glass container Borosilicate glass Resistance of heat and low expansion coefficient Beakers and flask Lead crystals Softer , denser , heavier and high refractive index Make prisms
Major component of ceramic Aluminium oxide AI2O3 Titanium oxide TiC Silicon carbide SiC Silicon Oxides carbide Carbides and nitrides
Main characteristic of ceramics High thermal resistant Breaks easily Chemically inert Electrical insulator Hard and strong Heat insulator
Types of ceramics Types of ceramic Properties Uses Traditional ceramics Soft , mouldable mixture then heated at high temperature Use to make bricks , pottery and crockery Advanced ceramics Higher resistance to heat and abrasion , more chemically inert and have superconductivity Make cutting disc , tungsten carbide rings and brake disc
Composite materials and its importance a) Define composite materials - A composite material is a material made from combining two or more non -homogeneous substances , that is matrix substance and strengthening substance . The matrix substance surrounds and binds the strengthening substance together .
Types of composites materials Type of composite materials Properties Uses Reinforced concrete High compressive strength , resistant to fire and weather Use in the construction of bridges , dams and buildings Fibre glass Dimensional stability and chemical substances Used to make helmets , car bumpers and printed circuit boards Optical fibre Mechanical strength , fiber dispersion Used to transmit information and data in the form of light , carry data in large capacity and to not be influenced by electromagnetic disturbances , video camera , cables in computer network PhthilShiblhiUdiid