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Differentiate PLASTIC AND RUBBER
place of origin
PLASTIC
PLASTIC
RUBBER
Natural
Natural rubber
rubber derived
derived from
from the
the sap
sap of
of
Plasticizers are synthesized from
petrochemicals.
rubber
rubber
Synthetic
Synthetic rubber
rubber (synthetic
(synthetic rubber)
rubber) is
is
generated
from
condensation
reaction
generated from condensation reaction
structures
structures include
include isoprene
isoprene unit.
unit.
IR
IR synthetic
synthetic rubber
rubber is
is derived
derived from
from crude
crude oil
oil
APPLICATION OF RUBBER
INDUSTRY
Tire
Anti-corrosion products
Castings
Technical products in car
Power cord…..
MEDICAL
Gloves
Medical instruments
Transfusion tube ...
LIFE
Footwear
Toy
furniture
Production of paper
mattress
APPLICATION OF PLASTIC
Some applications PE
Dây bọọc điệọn
Bình chựốa
Túi nilọn
ốống nhựọa PE
Tâốm nhựọa PE
Some applications of PMM
Răng giaả
Nữ trang
Kính máy bay
Thấu kính
Kính viễn vọng
Kính mô tô
thermoplastic
Thermoplastic: A type of plastic when heated, it will plasticizer, such as: PP, PE, PVC, PS, PC,
PET, ... (pitchers, bottles, jars, ....)
It will harden when cooled to room temperature
Can be reformatted 2nd fervent thanks shapes => styling easy and economical machining.
PLASTIC ELASTOMERS
thermosetting resin
Thermoset
Thermoset Plastics:
Plastics: A
A type
type of
of plastic
plastic when
when heated
heated to
to hard
hard solid,
solid, eg
eg PF,
PF, MF,
MF, ...
... (handle
(handle pan,
pan, saucepan
saucepan
handles,
handles, pot
pot handles,
handles, ....)
....)
If
If heated
heated 2nd
2nd it
it will
will be
be destroyed
destroyed rather
rather than
than melting,
melting,
PLASTIC IS one of thermoset resins type
additive in injection technology
Additives increase belt-CGE 106
Earnings increased transparent
Earnings increased Shọwy
Additives stiffener
Additives increase Lubricants
Additives UV resistant
Anti aging supplements
Anti-static additives infectiọn (Anti Static Agent) ASA 126
Additives anti-shrinkage, warping ...
VISCOSITY OF PLASTIC
Viscosity is a measure of the friction characteristics of the fluid (gas, liquid ...).
The higher viscosity, fluid flow in the tube harder (large friction). Here is plastic resin melt or
pastes.
The relatiọnship between temperature Pressure and
vọlume (PVT) ọf plastic?
Hình 2.1 Kennedy schema ọf the relatiọnship ọf the cọnditiọnsP.V.T0[22]
Fg 2.1
Figure 2.1 is schematic
Kennedy ọn vapọr pressure
dependence ọn temperature in
isọmetric cọnditiọns (dọtted
lines indicate the pressure (P)
depends ọn the temperature
(T0) when pọt
EFFECTS OF PVT
Temperature: influence prọduct fọrmatiọn
Pressure: necessary fọr saturatiọn sọlubility
Time: decisive stabilizatiọn phases.
RELATIONSHIP WHEN PLASTIC PVT
Temperature, pressure and time have intimate relations directly influence the formation of the
product.
The pressure contributed to the thermodynamic stability of the product mix
Molecular size of some kind of plastic?