Product Description
Viton? GBL-200S, formerly known as VTR-8655, is a next generation, easy processing, low viscosity, peroxide cured 68% fluorine fluoroelastomer based on new Advanced Polymer Architecture technology. Compared to the original Viton? GBL-200, Viton? GBL-200S shows better processability coupled with similar or improved fluids resistance in aromatic hydrocarbons, alcohols, water, steam, and acids.
Features
? Is ideal for blending with Viton? GBL-600S to reach intermediate viscosity ranges
? Cures exceptionally fast to a high state of cure
? Exhibits improved mold release/mold fouling properties compared to Viton? GBL-900 and Viton? GBL-200
? Exhibits improved mold flow and less shear sensitivity than 65 Mooney Viton? GBL-600S
? Exhibits excellent physical properties with high elongation, both original and aged compounds
? Exhibits similar heat, fluids, and low temperature resistance compared to Viton? GBL-200
? Exhibits excellent compression set resistance with little (2 hr) or no postcure either low or no postcure
Processing
A load factor of >70% for internal mixing of Viton? GBL-200S is recommended. The recommended process aids for Viton? GBL-200S are 1 phr of Struktol? HT 290, or combinations of 0.5 phr Armeen? 18D with carnauba wax or Struktol? WS 280. Diak? #7 (TAIC) co-agent is recommended for all Viton? GBL-200S compounds. Used at a level of 2.5 phr or less is satisfactory unless high modulus is needed. At higher levels, TAIC can bleed out and cause molding flaws.
Safety and Handling
Before handling or processing Viton? GBL-200S, be sure to read and be guided by the suggestions in DuPont technical bulletin “Handling Precautions for Viton? and Related Chemicals.”
Contents
Table 1 — General Properties of Viton? GBL-200S compared to Viton? GBL-200 and Viton? GBL-600S.
Technical Information — Rev. 2, July 2010
DuPont? Viton? GBL-200S
Product Description: Viton? GBL-200S
Chemical Composition: Copolymer of hexafluoro-
propylene vinylidene fluoride, and tetra-
fluoroethylene with a cure site monomer
Physical form
Sheet
Appearance
Off white to tan
Odor
None
Mooney Viscosity,
ML 1 + 10 at 121 °C
25
Specific Gravity
1.84
Storage Stability
Excellent
Fluorine, %
~68
Table 1
Comparison of General Properties of DuPont? Viton? GBL-200S, DuPont? Viton? GBL-200
and DuPont? Viton? GBL-600S
A38-01
GBL-200
A38-03
GBL-200S
A38-04
50/50Blend
A38-05
GBL-600S
Viton? GBL-200
100
—
—
—
Viton? GBL-200S
—
100
50
—
Viton? GBL-600S
—
—
50
100
Zinc Oxide
3
3
3
3
N990 (MT Black)
30
30
30
30
Diak? 7 (TAIC)
3
3
3
3
Varox? DBPH-50
3
2
2
2
Total phr
139
138
138
138
Mooney Scorch at 121 °C
Minimum, MU
18
19
27
35
2 pt rise, min
26.2
>30
>30
>30
5 pt rise, min
29.0
—
—
—
10 pt rise, min
>30
—
—
—
ODR at 162 °C, 3° arc, 100 range, 30 min clock
ML, dN.m
8
7
10
14
ts2, min
1.4
1.7
1.7
1.6
t50, min
3.0
3.1
3.1
3.1
t90, min
9.8
4.7
4.6
4.8
MH, dN.m
114
150
141
132
MDR 2000 at 177 °C, 0.5° arc, 100 range, 6 min clock
ML, dN.m
0.7
0.6
1.0
1.5
ts2, min
0.5
0.5
0.5
0.5
t50, min
0.7
0.7
0.7
0.7
t90, min
1.9
1.1
1.1
1.1
t95, min
2.7
1.4
1.4
1.4
MH, dN.m
18.3
30.4
29.3
27.9
Rosand Capillary Rheometer, At 100 °C, 1.5 mm die, L/D + 0/1 and 10/1
Piston Speed
Shear Rate
Pressure (L/D + 0/1 die), MPa
mm/min
s-1
12.7
113.1
4.2
4.0
4.7
4.1
50.8
451.7
6.2
5.7
5.7
6.0
127
1128.7
7.9
7.2
7.4
7.7
250
2222.1
10.0
8.6
8.9
9.4
Physical Properties at R.T. — Original cure 5’ at 177 °C, no postcure
M10, MPa
0.7
0.7
0.7
0.7
M100, MPa
3.4
3.2
3.4
3.1
Tb, MPa
12.6
13.2
13.4
13.0
Eb, %
291
319
337
314
Hardness, A, pt
66
67
67
66
Hot Tear Die B at 150 °C — Original cure 7’ at 177 °C, no postcure
Die B, nicked, N/mm
9.1
10.3
10.7
10.8
Table 1 (continued)
Comparison of General Properties of DuPont? Viton? GBL-200S, DuPont? Viton? GBL-200
and DuPont? Viton? GBL-600S
A38-01
GBL-200
A38-03
GBL-200S
A38-04
50/50Blend
A38-05
GBL-600S
Physical Properties at R.T. –Original, cure 5’ at 177 °C, postcure at 232 °C
16 hr
4 hr
4 hr
4 hr
M10, MPa
0.8
0.7
0.8
0.7
M100, MPa
5.4
4.2
4.4
3.7
Tb, MPa
20.6
19.6
20.1
17.6
Eb, %
247
289
317
278
Hardness, A, pt
70
70
70
69
Physical Properties at R.T.—Heat aged 70 hr at 250 °C in oven (slabs postcured)
M10, MPa
0.8
0.8
0.7
0.8
M100, MPa
4.5
3.8
3.7
3.7
Tb, MPa
18.7
19.7
18.9
18.8
Eb, %
322
360
366
372
Hardness, A, pt
70
70
70
70
Pt change
0
0
0
1
% change, M10
8
10
–4
10
% change, M100
–16
–10
–16
0
% change, Tb
–9
1
–6
7
% change, Eb
30
24
16
34
Physical Properties at R.T.—Heat aged 70 hr at 275 °C in oven
M10, MPa
0.7
0.7
0.8
0.6
M100, MPa
3.3
3.3
3.2
3.0
Tb, MPa
12.1
14.4
13.3
12.3
Eb, %
327
343
373
423
Hardness, A, pt
69
69
70
69
Pt change
–1
–1
0
0
% change, M10
–8
–4
–1
–10
% change, M100
–38
–23
–27
–20
% change, Tb
–41
–27
–34
–30
% change, Eb
32
19
18
52
Fluid Immersions—Volume swell— tested 168 hr at 23 °C
Fuel C, 168 hr at 23 °C
4.0
4.2
4.1
4.0
M15 Fuel, 168 hr at 23 °C
23
22
22
21
Methanol, 168 hr at 23 °C
57
53
51
47
Water, 168 hr at 100 °C
8.2
4.4
4.9
4.6
Compound Specific Gravity
1.860
1.861
1.861
1.863
Compression Set, Method B, O-rings
16 hr
4 hr
4 hr
4 hr
22 hr at 200 °C
No postcure
37
14
14
16
Postcured at 232 °C
29
11
14
14
Low Temperature Testing
Tg by MDSC, postcured, °C
–17.4
–18.8
–18.1
–17.2
Appendix
List of Propriety Chemicals and Ingredients
Sources of compounding ingredients used in this bulletin are listed below. This is not to imply that comparable ingredients from other sources might not be equally usable.
Material
Composition
Supplier
Armeen? 18D
1-Octadecanamine, N-Octadecyl
Akzo Nobel Polymer Chemicals L.L.C
Chicago, IL 60606
Carnauba wax
carnauba wax
Frank B. Ross Co., Inc
Jersey City, NJ 07304
DIAK? 7
TAIC – triallyl isocyanurate
DuPont
Wilmington, DE 19809
DIAK? 8
TMAIC - trimethallyl isocyanurate
DuPont
Wilmington, DE 19809
Struktol? HT-290
Blend of fatty acid derivatives
Struktol Co. of America
Stow, OH 44224-0649
Struktol? WS-280
Silicone-organic compounds
Struktol Co. of America
Stow, OH 44224-0649
Varox? DBPH50
45% active dispersion of 2,5- dimethyl-2-5-Di-(t-butyl-peroxy) hexane
R.T. Vanderbilt Co
Norwalk, CT 06855
Viton? fluoroelastomer
Fluorinated synthetic rubber (FKM)
DuPont
Wilmington, DE 19809
Test Procedures
Property Measured
Test Procedure
Compression Set
ASTM D3955, Method B (25% deflection)
Compression Set –Low Temperature
ASTM D1299, Method B (25% deflection)
Compression Set, O-Rings
ASTM D1414
Hardness
ASTM D2240, durometer A
Mooney Scorch
ASTM D1646, using the small rotor. Minimum viscosity and time to a 1-, 5-, or a 10-unit rise are reported.
Mooney Viscosity
ASTM D1646, ten pass 100 °C and 121 °C
ODR (vulcanization characteristics measured with an oscillating disk cure meter)
ASTM D2084
Property Change After Oven Heat-Aging
ASTM D573
Stress/Strain Properties
100% Modulus
Tensile Strength
Elongation at Break
ASTM D412, pulled at 8.5 mm/s (20 in/min)
Stiffness, Torsional, Clash-Berg
ASTM D1043
Temperature Retraction
ASTM D1329
Volume Change in Fluids
ASTM D471
Note: Test temperature is 24 °C, except where specified otherwise.
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The information set forth herein is furnished free of charge and is based on technical data that DuPont believes to be reliable and falls within the normal range of properties. It is intended for use by persons having technical skill, at their own discretion and risk. This data should not be used to establish specification limits nor used alone as the basis of design. Handling precaution information is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outside our control, we make no warranties, express or implied, and assume no liability in connection with any use of this information. As with any product, evaluation under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate or a recommendation to infringe on patents.
Caution: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, discuss with your DuPont customer service representative and read Medical Caution Statement H-50103-3.
Copyright ?2010 DuPont. The DuPont Oval Logo, DuPont?, The miracles of science?, and Viton? are trademarks or registered trademarks of E.I. du Pont de Nemours and Company or its affiliates. All rights reserved.
Armeen? is a registered trademark of Akso Nobel Polymer Chemicals L.L.C.
Struktol? is a registered trademark of Struktol Co. of America.
Varox? is a registered trademark of R.T. Vanderbilt Co.
(06/04) Reference No. VTE-A10165-00-C0710