Properties 

Liquid Crystal Polymers
LCP
Unfilled; medium melting point

Topics   Index

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Copyright 2002 by Roger D. Corneliussen
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Values are from Modern Plastics Encyclopedia 99.

To jump to a particular property, click on the name listed below.

Melt Flow
Melting Temperature
Glass Transition
Processing Molding Pressure
Processing Molding Temperature
Compression Ratio
Mold Shrinkage
Tensile Strength
Elongation
Tensile Yield Strength
Compressive Strength
Flexural Strength
Tensile Modulus
Flexural Modulus
Izod Impact Strength
Hardness
Deflection Temperature
Thermal Expansion
Thermal Conductivity
Specific Gravity
Dielectric Strength
Water Absorption

Note: The ASTM numbers are linked to 
their descriptions on the ASTM website.  
To go to the description, simply
click on the ASTM number

Melt Flow 
ASTM D1238
(gm/10 min)

--- gm /10 min

Melting Temperature  degrees C
Tm Crystalline
280 to 421 C

Glass Transition (C)
Tg (Amorphous)

--- C

Processing Temperature Range Degrees F
Extrusion

540 to 770 F for injection molding

Molding Pressure Range ( PSI) (ksi)
1000 to  16000 psi
1 to 16 ksi
6.7 to 107 MPa

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Compression Ratio
2.5 to 4

Mold(Linear) Shrinkage (in/in)
ASTM D955
0.001 to 0.006 in/in

Tensile Strength at Break
ASTM D638
15900 to 27000 psi
106 to 180 MPa

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Elongation at break (%)
ASTM D638
1.3 to 4.5 %

Tensile Yield Strength (psi)
ASTM D638
--- psi
--- MPa

Compressive Strength (psi)
Rupture or Yield
ASTM D695
6200 to 19000 psi
41 to 127 MPa

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Flexural Strength (psi)
Rupture or Yield
ASTM D790
19000 to 35500 psi
127 to 237 MPa

 Tensile Modulus (psi)
ASTM D638
1400000 to 2800000 psi
9.3 to 18.7 GPa

To go to Modulus Values,
click on
Modulus

Compressive Modulus (psi)
ASTM D695
400000 to 900000 psi
2.7 to 6 GPa

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Flexural Modulus (psi)
ASTM D790
At 73 F
1770000 to 2700000 psi
11.8 to 18 GPa
At 200 F
1500000 to 1700000 psi
10 to 11.3 GPa
At 250 F
1300000 to 1500000 psi
8.7 to 10 GPa
At 300 F
1200000 to 1450000 psi
8 to 9.7 GPa

Izod Impact (ft-lb/in of notch)
ASTM D256

1.7 to 10 ft lb/in of notch

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Hardness
Rockwell ASTM D785
M76; R60-66
--
Shore D65 ASTM D2240/D2583
---

Coefficient of Linear Thermal Expansion
(10 exp-6 )in/in/C
5 to 7 (10 x exp 6) in/in /C
0.000 005 to 0.000 007  in/in /C

Deflection Temperature under flexural load (F)
ASTM D648
264 psi ---
356 to 671 F
66 psi  ---
--- F

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Thermal Conductivity
(10 x exp 4)al cm/sec cm2 C
ASTM C177
2 (10 x exp 4) cal cm/sec cm2
0.0002   cal cm/sec cm2

Specific Gravity
ASTM D792
1.35 to 1.84

To go to Density /Specific Gravity Values,
click on
Density

Water Absorption
(1/8 in thick specimen) (%)
ASTM D570
24 hr --- <0.1%
Saturation 
<0.1  %

Dielectric Strength v/mil
(1/8 in thick Specimen; short time)
800 to 980 v/mil

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Topics   Index

**************************************
Copyright 2002 by Roger D. Corneliussen
No part of this transmission is to be
duplicated, in any manor, or forwarded by
electronic mail without the express written
permission of Roger D. Corneliussen
**************************************

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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