| |
POLYAMIDE 6-66 | PBT
| ABS
| POLYCARBONATE
| POLYPROPYLENE
| SAN
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PC
is an amorphous engineering thermoplastic with excellent combination
of properties. It is one of the engineering plastics to compete
with die cast metals. It was first commercialised in 1958
by General Electric Co. Today about 75% of the market is held
by GE Plastics and Bayer with their products. High molecular
weight polycarbonate is manufactured by phosgenation of bisphenol
- A. Phosgene is bubbled through a solution of bisphenol-A
in pyridine at 25 to 35șC. During polymerisation, the hydrochloric
acid produced reacts with pyridine and precipitates as phridine
hydrochloride.
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| Burns
with difficulty has a yellow flame and is self-extinguishing
it has a Specific Gravity of 1.2. It is soluble in methylene
chloride and ethylene dichloride. |
|
 Good
stain resistance
Easy
colourability
Good
biocompatibility
Chemically
resistant to organic and inorganic liquids
Non-toxic
Good
insulator
Dielectric
constant is independent of temperature
High
corrosion resistance
High
creep resistance over broad temperature range
Excellent
toughness
Dimensionally
stable Very
good impact resistance at small thickness
Good
property retention upto - 20șC
High
clarity Low
haze Transmission
rate is between 86 & 89%
High
heat deflection temperature
Flame
resistant
Self
extinguishing in nature
Limited
scratch resistance
Notch
sensitive
Hygroscopic
in nature
Turns
yellow when exposed to UV light for a long period of time Crazing
occurs when exposed to water at elevated temperatures.
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| APPLIANCES
: |
Housing
for Camera, Biconcave casing, Flash Lights, Hair dryers,
Coffee makers, Water tank for steam iron, Fruit juicer
parts. |
| AUTOMOTIVE
: |
Indicator
lamps, Tail & side light, Head Lamps Support, Traffic
Light housing and Signal lenses, Helmets, Wheel cover,
Body panels, Protective hoods, Ventilation & Radiator
grills, Bumpers, Chassis, Valves. |
| ELECTRICAL
/ ELECTRONICS : |
Wiring
devices, Insulator panels, Plug & Socket terminal blocks,
Coil formers, Panel light covers, Fuses, Electric meter
Covers, Connectors, Breaker boxes, |
| OPTICAL
: |
Diffusers, Lenses for lighting, Vacuum metalised reflectors,
Safety glasses, Sunglasses,
Ski goggles, Audio Compact discs, Film & Slide cassettees
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|
|
| Unfilled |
In
white, Grey, Black, Red and other colours. |
| Glass Filled |
In
Natural, Black Etc. |
| Blend of PC plus ABS |
In
all colours |
| Flame Retardant |
In
white, Grey, Black, Red and other colours. |
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Properties |
TEST
METHOD
ASTM |
Unit |
Unfilled
PC |
20%
GF
PC |
30%
GF
PC |
40%
GF
PC |
PC
+ ABS
ALLOY |
| (A) |
Mechanical |
| |
Impact
Strength |
D 256 |
ft-lb/in |
12-16 |
2-3 |
2-3 |
2.5-3.5 |
10.3-10.5 |
| |
Flexural
Strength |
D 790 |
1000
psi |
12-13.5 |
18-20 |
22-25 |
25-28 |
13-14 |
| |
Elongation
At Break |
D 638 |
% |
90-115 |
4-6 |
3-5 |
3-5 |
- |
| |
Tensile
Strength |
D
638 |
1000
psi |
8.5-9 |
15-20 |
16-19 |
20-25 |
8-9 |
| (B) |
Thermal |
| |
Heat
Deflection Temp |
D 648 |
0F |
260-288 |
285-295 |
285-295 |
285-295 |
250-252 |
| |
Coeeficient
of Thermal Expansion |
D
696 |
10s
/ 0F |
3.5-3.75 |
1.4-1.5 |
1.2-1.5 |
0.9-1 |
36-37 |
| (C) |
Electrical |
| |
Dielectric
Strength |
D 149 |
v/mil
(DRY) |
380-425 |
490-495 |
475-480 |
450-455 |
1250-1550 |
|
Notice:
The Information and Properties indicated above are typical
values obtained & should not be construed as specifications.
This information is presented is in good faith, and
is believed to be accurate & reliable. However the
Company assumes no obligation or liability thereof (express
or implied).
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