PVDF Copolymers
SOLEF® PVDF
- General Characteristics
- Broad range of crystallinity; 20-60%
- More flexible than homopolymers
- HFP Copolymers
- 11000 series, heterogenous HFP distribution, 10% HFP
- 20000 series, more homogenous HFP distribution,
hence lower crystallinity, 8-15% HFP
- CTFE Copolymers - 30000 series
- Strongly heterogenous copolymer
- 10, 15, and 20% CTFE
- Broad use temperature range, down to -30°C
Physical Properties
Mechanical Properties
Thermal and Surface Properties
Chemical Resistance and Solution Properties
PHYSICAL PROPERTIES
|
|
|
SOLEF PVDF
Copolymer (HFP) |
SOLEF PVDF
Copolymer (CTFE) |
| Property |
Method |
Units |
11008 |
21216 |
21508 |
31508 |
| Form |
|
|
P and G |
P |
P and G |
P and G |
| Density |
D 792 |
g/cm3 |
1.78 |
1.78 |
1.78 |
1.75 |
| Water Absorption, 24 hr @ 23°C |
D 570 |
% |
<0.04 |
<0.04 |
<0.04 |
<0.04 |
Melt Flow Index
at 230°C |
2.16 kg |
g/10 min |
8 |
1.3 |
8 |
5 |
5.1 kg |
g/10 min |
24 |
|
24 |
15 |
| Molecular Weight |
GPC |
|
|
|
|
|
| Number Average, 103 |
|
|
70 |
199 |
88 |
90 |
| Weight Average, 103 |
|
|
124 |
353 |
136 |
144 |
| Polydispersity |
|
|
1.8 |
1.8 |
1.5 |
1.6 |
MECHANICAL PROPERTIES
|
|
|
SOLEF PVDF
Copolymer (HFP) |
SOLEF PVDF
Copolymer (CTFE) |
| Property |
Method |
Units |
11008 |
21216 |
21508 |
31508 |
Tensile Strength
at Yield |
D 638* |
psi
MPa |
4,350-5,075
30-35 |
2,175-3,625
15-25 |
2,175-2,610
15-18 |
2,030-5,075
14-35 |
Tensile Strength
at Break |
D 638* |
psi
MPa |
2,900-5,800
20-40 |
3,625-6,525
25-45 |
2,900-5,800
20-40 |
2,030-4,350
14-30 |
Tensile Elongation
at Yield |
D 638* |
% |
10-12 |
15-18 |
12-15 |
10-12 |
Tensile Elongation
at Break |
D 638* |
% |
200-600 |
300-650 |
600-750 |
350-600 |
| Tensile Modulus |
D 638** |
kpsi
MPa |
160
1,100 |
73
500 |
52-70
360-480 |
73
500 |
| Flexural Strength |
D 790 |
kpsi
MPa |
5.8
40 |
|
|
3
18 |
| Flexural Modulus |
D 790*** |
kpsi
MPa |
145
1,000 |
58
400 |
52-58
358-400 |
61
425 |
| *=23°C, 50 mm/min |
**=23°C, 1 mm/min |
***=22°C, 2 mm/min |
THERMAL AND SURFACE PROPERTIES
|
|
|
SOLEF PVDF
Copolymer (HFP) |
SOLEF PVDF
Copolymer (CTFE) |
| Property |
Method |
Units |
11008 |
21216 |
21508 |
31508 |
| Melting Point |
D 3418 |
°C |
160 |
135 |
135 |
169 |
Glass Transition
Temperature |
DMTA / DMTS |
°C |
-29 |
-30 |
-29 |
-28 |
Heat Deflection Temperature
at 1.8 MPa, 264 psi |
D 648 |
°C |
52 |
39 |
40 |
36 |
|
| Surface Properties |
Contact Angle
(water) |
|
Degree |
88 |
90 |
92 |
|
CHEMICAL RESISTANCE AND SOLUTION PROPERTIES
|
|
|
SOLEF PVDF
Copolymer (HFP) |
SOLEF PVDF
Copolymer (CTFE) |
| Property |
Method |
Units |
11008 |
21216 |
21508 |
31508 |
| Hydrolytic Stability |
Internal* |
|
+ |
+ |
+ |
+ |
| Acids |
|
|
+ |
+ |
+ |
+ |
| Alkali |
|
|
– |
– |
– |
– |
| Aliphatic Hydrocarbons |
|
|
+ |
+ |
+ |
+ |
| Aromatic Hydrocarbons |
|
|
+ to – |
+ to – |
+ to – |
+ to – |
| Aliphatic Alcohols |
|
|
+ to – |
+ to – |
+ to – |
+ to – |
| Chlorinated Hydrocarbons |
|
|
+ to – |
+ to – |
+ to – |
+ to – |
| Dipolar Aprotic Solvents |
|
|
– |
– |
– |
– |
| Chlorine |
|
|
+ |
+ |
+ |
+ |
| Ozone |
|
|
+ |
+ |
+ |
+ |
| Sterilization by Gamma Radiation |
|
|
+ |
+ |
+ |
+ |
| Sterilization by Steam |
|
|
+ |
+ |
+ |
+ |
| |
| Solution Properties |
| Major Solvents |
|
|
Acetone
NMP,DMF,
DMAC |
Acetone
NMP,DMF,
DMAC |
Acetone,MEF
NMP,DMF,
DMAC |
NMP,DMF,
DMAC |
| Viscosity, 10% in NMP |
23°C, 50 rpm |
cps |
150 |
4,100 |
240 |
230 |
KEY |
* These ratings give a general indication. Please ask about specific reageants |
+ |
The polymer is resistant. Any increase in weight is less than 2% and any decrease in weight is less than 0.3%. The tensile yield strength is at least 85% of the initial value. |
0 |
The use of the polymer is limited. Response does not meet above criteria. For example, weight increase might be more than 2%. However, the polymer can be used if stress is low. |
– |
The polymer is not resistant. There is considerable alteration of the polymer, such as dissolution or chemical or physical degradation. |
|
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