L
R I A
E
T
A
A S T I C M
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Differentiate PLASTIC AND RUBBER
PLASTIC
RUBBER
Plasticizers are
Natural rubber derived from the sap of rubber
synthesized from petrochemicals.
Synthetic rubber
(synthetic rubber) is generated from condensation reaction structures include isoprene unit.
IR synthetic rubber is derived from crude oil
place of origin
INDUSTRY Tire Anticorrosion products Castings Technical products in car Power cord…..
APPLICATION OF RUBBER
MEDICAL
Gloves Medical instruments Transfusion tube ...
LIFE
Footwear Toy furniture Production of paper mattress
APPLICATION OF PLASTIC
Some applications PE
ố
ự ng nh a PE
Túi nilon
ệ
ọ Dây b c đi n
ự
ấ
T m nh a PE
Bình ch aứ
Some applications of PMM
ấ
Răng giả
Th u kính
Kín h máy b a y
ữ
ọ
N t ra n g
ễ Kín h v i n v n g
Kính mô tô
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.
thermoplastic
PLASTIC ELASTOMERS
Thermoset Plastics: A type of plastic when heated to hard solid, eg PF, MF, ... (handle pan, saucepan handles, pot handles, ....)
If heated 2nd it will be destroyed rather than melting,
thermosetting resin
PLASTIC IS one of thermoset resins type
Additives increase beltCGE 106 Earnings increased transparent Earnings increased Showy Additives stiffener Additives increase Lubricants Additives UV resistant Anti aging supplements Antistatic additives infection (Anti Static Agent) ASA
126
Additives antishrinkage, warping ...
additive in injection technology
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.
VISCOSITY OF PLASTIC
Hình 2.1 Kennedy schema of the relationship of the conditionsP.V.T0[22]
The relationship between temperature Pressure and volume (PVT) of plastic?
Figure 2.1 is
schematic Kennedy on vapor pressure dependence on temperature in isometric conditions (dotted lines indicate the pressure (P) depends on the temperature (T0) when pot
Fg 2.1
Temperature: influence product formation Pressure: necessary for saturation solubility Time: decisive stabilization phases.
EFFECTS OF PVT
directly influence the formation of the product. The pressure contributed to the thermodynamic
stability of the product mix
RELATIONSHIP WHEN PLASTIC PVT Temperature, pressure and time have intimate relations
Molecular size of some kind of plastic?

