platics - introduction - types - advantages and disadvantages - applications PvC polymers - types - applications - advantages and disadvantages of pvc - details

1. PLASTICS AS BUILDING MATERIAL
- ANJALI.S

2. INTRODUCTION
 Plastic is a synthetic material made from a wide range of organic
polymers such as polythene , PVC , nylon etc that can be
moulded into shape while soft and then set into a rigid or slightly
elastic form
 Classification of plastics according to behaviour with respect to
heating
- thermoplastics
- thermo setting

3. TYPES OF PLASTICS
 Thermoplastics – softens by heat and hardens when cooled
down . It is recyclable
 Example – insulation of electrical cables , electrical applications
 Thermosetting plastics -cannot be reused , require great pressure
and momentary heating during moulding
 Example – structural components, laminated panels , handles ,
knobs , chairs . Waterproof materials , automobile bodies

4. ADVANTAGES &DISADVANTAGES
Advantages
 Corrosion resistance
 Light weight
 Water resistant and possess good
adhesiveness
 Low electrical and thermal
conductivity
 Easily formed into complex shapes
 Wide choice of appearance , colours
and transparency
Disadvantages
 Low strength and poor ductility
 Aging effect , hardens and
become brittle over time
 Sensitive to environment , moisture
and chemicals
 Deformation under load

5. APPLICATIONS
Bath and sink units
Electrical insulators and conduits
Decorative laminates and wall tiles
Lighting fixtures

6. APPLICATIONS
Damp proof films
Roof lightsOver head water tanks
Corrugated sheets and roof panels
Safety glass

7. PVC POLYMER FILMS
 Pvc films are thermoplastic material that can be highly
manipulated with the application of heat
 Properties
 Hard structure but can be made more flexible and soft by
adding plasticizers
 Versatile , good stability , strength and excellent weathering
properties

8. TYPES OF PVC FILMS
 Flexible Vinyl Film
 Flexible vinyl film has good barrier properties to oil and grease but
is oxygen permeable and is puncture resistant.
 It also has good cling and excellent clarity, which makes it
suitable for food packaging to keep meat and other perishable
produce fresh (when FDA approved).
 This type of PVC has a lower melting point and is less resistant to
chemicals, and typically has lower ultimate tensile strength than
rigid vinyl.

9. TYPES OF PVC FILMS
 Rigid Vinyl Film
 Rigid vinyl, also known as unplasticized polyvinyl chloride (uPVC),
is a strong and lightweight film.
 It is one of the most durable, low-cost films and is resistant to
many chemicals.
 high tensile strength, but is also has low impact toughness, and is
subject to stress cracking depending on the environment.
 Uses – flooring doors and windows , sheeting , insulated glazing
fascia ,siding , gutters and downspouts ,pipes

10. APPLICATIONS
Pvc flooring
 Inexpensive
 Used in home, hospitals, offices, schools, etc.
 Complex and 3D designs are possible due to
the prints that can be created which are then
protected by a clear wear layer.
 A middle vinyl foam layer also gives a
comfortable and safe feel.
 The smooth, tough surface of the upper wear
layer prevents the build up of dirt.

11. APPLICATIONS

12. APPLICATIONS
Roof coverings
 PVC sheets are also used as coverings
like the sheds in railway platforms ,air
base shed , nurseries
 Cost effective as compared to
traditional tin shed which are very
heavy and have heat absorbent
nature .
 Reinforced PVC roofing is easy to
install
 PVC has low maintenance
requirements and lasts for over 30
years.

13. APPLICATIONS

14. APPLICATIONS

15. ADVANTAGES OF PVC
 Durable
 Cheap material
 Easily available
 Ease of installation
 Easy to clean
 Can be casted to any shape
 Variable thickness
 Water proof
 Flexible
 Recyclable
 Wide range of colours patterns
 Good electric shock proof

16. DISADVANTAGES OF PVC
 Sensitive to UV and oxidant degradation
 Hcl is evolved in when it is decomposed
 Its production causes pollution
 Cannot be used at high temp
 They do not have same strength as cast iron or galvanised iron
pipes

17. DETAILS
Pvc sheet closure
Glazing bar
Aluminium F profile

18. DETAILS
1. Support beam
2. Pvc sheet
3. Elastic flanges to support sheet
4. Pressure slab
5. Protective lid