| PROPERTY |
UNITS |
CONDITIONS |
VALUE |
REFERENCE |
Molecular Weight
(or repeat unit) |
gmol -1 |
- |
246.31 |
(1) |
| Typical molecular weight range |
gmol -1 |
End group titration |
(1.6-4.0)x104 |
(6) |
| IR |
cm-1 |
Ref. KBr tablet |
1,650; 1,550; 1,440;
1,030; 790; 700 |
(6) |
| UV |
nm |
Ref. 96% H2SO4 |
260 |
(7) |
| 1H-NMR |
ppm |
Formic acid solution |
1.8, 2.5, 4.5, 7.3 |
(6) |
| 13C-NMR |
ppm |
Formic acid solution |
25.7, 36.3, 44.7,127.7,
130.0, 138.7, 177.7 |
(6) |
| Thermal expansion coefficient |
K-1 |
ASTM D696 |
5.1 x 10-5 |
(1) |
| Density (amorphous) |
gcm-3 |
296K |
1.19 |
(6) |
| Solvents |
- |
Room temp. |
Sulfuric acid, formic acid, trifluoroacetic acid, m-cresol, o-cresol,phenol/ ethanol (4:1 by vol.), hexafluoroisopropanol |
(6) |
| |
|
433K |
Benzyl alcohol, ethylene glycol |
|
| |
|
473K |
Diethylene glycol, triethylene glycol |
|
| Nonsolvents |
- |
Room temp. |
Water, n-butanol, n-heptane |
|
| Crystalline state |
- |
Lattice
Space group
Chain conformation |
Triclinic
C1i - P1
Planes incline to the c axis by a few degrees from planar zigzag |
(5) |
| Unit call dimensions |
Å |
- |
a = 12.01,b = 4.83, c = 29.8 |
(5) |
| Unit cell angles |
Degrees |
- |
 = 75.0,  = 26.0,  = 65.0 |
(5) |
| Unit cell contents |
- |
- |
2 |
(5) |
| Degree of crystallinity |
% |
Solid phase polymerized,
DSC |
35 |
(6) |
| Heat of fusion |
kJ mol-1 |
DSC |
37 |
(6) |
| Density (crystalline) |
g cm-3 |
- |
1.25 |
(5) |
| Glass transition temperature |
K |
DSC |
358 |
(6) |
| Melting point |
K |
DSC |
510 |
(6) |
| Heat capacity |
JK-1g-1 |
DSC
313K
533K |
1.31
2.51 |
(6) |
| Deflection temperature |
K |
ASTM D648,
1.8 MPa |
369 |
(1) |
| Tensile modulus |
MPa |
ASTM D638 dry |
4,700 |
(1) |
| Tensile strength |
MPa |
ASTM D638 dry |
99 |
(1) |
| Maximum extensibility (L/L0) |
% |
ASTM D638 dry |
2.3 |
(1) |
| Flexural modulus |
MPa |
ASTM D790 dry |
4,400 |
(1) |
| Flexural strength |
MPa |
ASTM D790 dry |
160 |
(1) |
| Impact strength |
Jm-1 |
ASTM D256 dry, notched |
20 |
(1) |
| Hardness |
Rockwell M |
ASTM D785 dry |
108 |
(1) |
| Abrasion resistance |
g kcycles-1 |
ASTM D1044 |
19 x 10-3 |
(2) |
| Index of refraction n |
- |
ASTM D542, amorphous |
1.582 |
(6) |
| Dielectric constant E' |
- |
ASTM D150, 110 and 103 MHz |
3.9 |
(2) |
| Dielectric loss index E" |
- |
ASTM D150, 110 and 103 MHz |
0.039 |
(2) |
| Resistivity |
ohm cm |
ASTM D257 |
1.2 x 1016 |
(2) |
| Permeability coefficient |
m3 (STP) m
s-1 m-2 Pa-1 |
O2, 296K, 60% RH |
5.7 x 10-21 |
(6) |
| Thermal conductivity |
W m-1 K-1 |
- |
0.38 |
(2) |
| Melt viscosity |
Pa s |
543K, shear stress 24.5 kPa
Mn = 16,000
Mn = 19,000
Mn = 25,000
Mn = 39,000 |
140n
280n
730n
2,400n |
(1) |
| Melt index |
g |
ASTM D1238, condidtion K
Mn = 16,000
Mn = 19,000
Mn = 25,000
Mn = 39,000 |
7n
4n
2n
0.5n |
(1) |
| Decomposition temperature |
K |
TGA |
653 |
(6) |
| Water absorption |
% |
293K, equilibrium |
5.8 |
(1) |
| Important patents |
- |
- |
- |
(3,4) |
| Availability |
kg |
- |
20,000MT |
|
| Suppliers |
Mitsubishi Gas Chemical Co., Inc., Tokyo, Japan
Solvay & Cie, Brussels, Belgium |
REFERENCES
1. Mitsubishi Gas Chemical Catalog. Polyamide MXD6.
2. Mitsubishi Gas Chemical Catalog. Reny, Engineering Plastics.
3. Miyamoto, A., et al. U.S. Patents 4 433 136 and 4 438 257 (1984); European Patents 0 071 000 and 0 084 661 (1986)
4. Miyamoto, A., et al. U.S. Patents 3 962 524 and 3 968 071 (1976)
5. Ota, T., M. Yamashita, O. Yoshizaki, and E. Nagai. J. Polymer Sci., Part A-2, 4 (1966): 959.
6. Mitsubishi Gas Chemical Co. Private communications.
7. Tsukamoto, A., H. Nagai, K. Eto, and N. Fujimoto. Kobunshi Kagaku 30 (1973): 339. |
