Plastic is an organic material that can be molded when heated and pressed. It has various properties depending on its type. Thermoplastics can be reshaped when heated while thermosetting plastics permanently harden when heated. Plastics come in different categories based on their structure, elasticity, and usage. They are widely used for flooring, pipes, furniture, storage containers, and various construction purposes due to properties like durability, light weight, and resistance to corrosion.

2.  Plastic is an organic material of high molecular
weight , which is soft enough at some stage of its
manufacture to be formed in various shapes by
applying heat and pressure
 Plastic is a clear tough polymer with exceptional
gas and moisture barrier properties. The building
and construction industries is the nations 2nd
largest consumer of plastics.
 Plastics are building a reputation for durability,
aesthetics, easy handling and high performance
 It is most synthetic material.

3.  THERMOPLASTIC- This is strong, hard and
durable in a variety of colors. It is softened by
heating process and regain its original property
as it solidify during cooling to form the finished
product. It is used in PVC tubes, wall tiles, floor
tiles and glazing.
 THERMOSETTING PLASTIC- It is changed
chemically by heating process and solidify while
still hot and assume the form of finished
product. It is not possible to reshape this by
means of heat and pressure. It is used in wash
basins, water closets, valves, handles and wall
panels.

4.  HOMOGENEOUS PLASTIC- It contains carbon
chain and exhibits homogeneous structure.
 HETROGENEOUS PLASTIC- It contains carbon
chain oxygen, nitrogen and other elements as
well as.

5.  SOFT PLASTIC- It have low modulus of elasticity.
Is elongation under pressure disappears slowly
on removal of pressure.
 RIGID PLASTIC- Have high modulus of elasticity.
Maintain shape under pressure at normal as well
as increased temperature.
 SEMI-RIGID PLASTIC- Have medium modulus of
elasticity. Elongation under pressure disappear
completely on removal of pressure.
 ELATOMERS- Have very low modulus of
elasticity. Deform under pressure considerably
and return to its original shape on removal of
pressure.

6.  Plastics may be transparent and translucent.
 Most plastics have high coefficient of thermal expansion .
 Have very low melting point.
 Have high corrosion resistance .
 By adding suitable pigment can be made in any shape and
design.
 Quite durable, very cheap and light weight but not ductile.
 Have excellent electric insulating property, fire resistance,
weather resistance but loss strength, become soft and dull
as time passes.
 Reasonably strong
 Do not require any protective coat of paint, low
maintenance.
 Can be easily fix, drill, bolt clamp , screw etc. anywhere .

8.  PLATICS ARE USED WIDELY AS-
 Flooring
 Thermo plastic vinyl tiles, PVC sheets
 Poly vinyl acetate floor
 Emulsion floor finishes
 Roofing
 P.V.C. pipes
 Laminated veneer
 Concrete shattering
 Structural sections
 Doors and window frames
 Internal partition and wall paneling
 Temporary and permanent shelters
 Water storage tanks
 Furniture like chair, benches etc.
 And many other daily useful items for wash rooms, kitchen purposes
etc.

9. MANISHA AGARWAL