1. PREPARED BY:
NOR AZLIN NADIRA BINTI ABD RAHMAN
(2012431254)
PREPARED FOR:
EN ABDUL MUHAIMIN BIN AB WAHID

2. TYPE OF PLASTICS
Thermosetting plastic Thermoplastic
 Once cooled and hardened, these  It is less rigid than thermosets
plastics retain their shapes and because thermoplastics can soften
cannot return to their original upon heating and return to their
form. original form.
 They are easily molded and
 They are hard and durable.
extruded into films, fibers and
 Thermosets can be used for auto packaging.
parts, aircraft parts and tires.  Examples include polyvinyl
 Examples include alkyds chloride (PVC), acrylonitrile
(polyester), urea formaldehyde butadiene styrene (ABS), high-
(UF) and melamine formaldehyde density polyethylene (PEX) and
(MF). chlorinated poly-vinyl chloride
(CPVC).

3. THERMOSETTING
- Alkyds / Polyester
• hard, transparent, abrasion resistant, good
electrical insulation (even in humid
conditions), good chemical, mechanical
properties and dimensional stability.
• commonly used as casting materials,
fiberglass laminating resins, and non-metallic
auto-body fillers.
• used for car body panels and fender walls
(SMC - sheet molding compound), tool
housings (BMC - bulk molding compound)
brackets, industrial equipment housings and
critical long term high reliability electrical
parts(connectors, circuit breakers, switches).

4. - Urea formaldehyde (UF)
• strong, glossy, and durable.
• not affected by fats, oils esters, ether,
petrol, alcohol or acetone, nor by
detergents or weak acids, and they exhibit
good resistance to weak alkalis.
• have high surface hardness and gloss,
brilliant and precise colors, and light
fastness. Their high mechanical strength,
heat and fire resistance, and good
electrical arc and tracking resistance
• an ideal plastic for numerous industrial
and household applications, from
doorknoobs and toilet seats to electrical
components and cosmetics enclosures.

5. - Melamine formaldehyde (MF)
• similar to urea molding compounds, but
melamine has even better resistance to heat,
chemicals, moisture, electricity and
scratching.
• have high surface hardness and gloss, brilliant
and precise colors, and light fastness. Its
properties are hard, opaque, tough, scratch
resistant, self-extinguishing, free from taint
and odour, wide colour range, resistant to
detergents and dry cleaning solvents.
• ideal for dinnerware, kitchen utensils,
bathroom accessories, and electrical
components. Some uses include electrical
breakers, receptacles, closures, knobs and
handles, appliance components, adhesives,
coatings and laminates.
• formerly used for dishware. It’s also suitable
for decorative laminates, lighting fixtures,
dinnerware, heavy duty electrical equipment,
laminating resins, surface coatings, bottle
caps, toilet seats.

6. THERMOPLASTICS
- Poly-vinyl chloride (PVC)
• glueable, weldable, very machineable and heat
bends nicely.
• supplied in grey, white, and clear, in sheet, rod, or
tubing.
• commonly used for nuts, bolts, ducts, hoods, and
process tanks. It is found very frequently in
sprinkler systems and suitable for burying
underground and approved for carrying drinking
water.
• can withstand a lot of pressure, but breaks down in
sunlight.
• no attack to dilute and concentrated acids,
alcohols, bases, aliphatic hydrocarbons and mineral
oils.
• minor attack to vegetable oils and oxidizing agents.
• has a limited resistance define as moderate attack
and suitable for short term use only to aldehydes.
• it is a poor resistance which is not recommended
for use with aldehydes, esters, aromatic and
halogenated hydrocarbons, and ketones.

7. - Acrylonitrile butadiene styrene (ABS)
• is a black piping material.
• thermo-formed, pressure formed, blow molded,
sheared, sawed, drilled, or even "cold stamped".
Joints can be ultrasonic welded, thermo-welded,
and chemically bonded. ABS also impact
resistant.
• commonly used for telephone bodies, safety
helmets, piping, furniture, car components, TV
casings, radios, control panels, and similar.It acts
as valve bodies, material handling equipment.
• its porosity lessens the strength of the material,
but also reduces manufacturing costs.
• used for drains or vent stacks. Vents stacks are
simply a vent to allow air to escape up through
the roof, and drains have very little pressure.
• no attacks to glycerine, inorganic salts, alkalis,
many acids, most alcohols and hydrocarbons.
• moderate attack and suitable for short term use
only to weak acids.
• not recommended for use with strong acids and
solvents, ketones, aldehydes, esters and some
chlorinated hydrocarbons.

8. - High-density polyethylene (PEX)
• has a good impact resistance, light weight,
very low moisture absorption and high tensile
strength.
• uses include pipe fittings, wear paltes, hinges,
cutting boards and it is a flexible pipe made for
carrying water. It is used for radiant heat
floors, in which hot water is run through pipes
laying just under the flooring surface.
• red and blue PEX piping, hot and cold
respectively, can be run from a central
manifold to each separate water outlet in your
home.
• no attack to dilute and concentrated acids,
alcohols and bases.
• moderate attack and suitable for short term
use only to halogenated hydrocarbons and
oxidizing agents.
• minor attack to aldehydes, esters, aliphatic
and aromatic hydrocarbons, ketones and
mineral and vegetable oils.

9. - Chlorinated poly-vinyl chloride (CPVC)
• is orange in color and is generally only used
on indoor fire sprinkler systems, although it
can be found in some other places.
• not suitable for drinking water, but is able to
withstand higher pressures than other types
of PVC.
• it is also readily workable, including
machining, welding, and forming.
• ideally suited for self-supporting
constructions where temperatures up to 200
°F (90 °C) are present.
• ability to bend, shape, and weld CPVC enables
its use in a wide variety of processes and
applications. It exhibits fire-retardant
properties.
• can withstand corrosive water at
temperatures greater than PVC, typically 40°C
to 50°C (104°F to 122°F) or higher.