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Technical Information
Dyneon
™
Fluoroelastomers
Compounding Fluoroelastomers
General Compounding
General Compounding Ingredients
Inorganic Bases
Changes in Properties with variations in MgO/Ca(OH)2 Ratios (Table)
Filler Systems
Effect of Filler Level (black)
Effect of Filler Level (Non-black)
Changes in Properties with use of Non-Black Fillers (Table)
Compounding with Various Fillers (Table)
Low Durometer Compounds
Processing Aids
Cure Systems
Effects of Cure Systems
Pigments
Effects of Contamination
Blends of Fluorocarbon Elastomers
Blending Fluorocarbon Elastomers (Table)
Blending Incorporated Cure Gums with Raw Gum (Table)
Blends with Synthetic Elastomers
Blending Fluorocarbon/Fluorosilicone Elastomers (Table)
Effects of Crosslink Density
Compounding for O-Ring Applications
Compounding for Molded Goods Applications
Compounding for Calendering Process
Compounding for Extrusion Process
Compounding for Metal Adhesion
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General Compounding
The basics of choosing the polymer and cure system and compounding those systems with the proper acid
acceptors and fillers to fulfill the rheological, physical and processing requirements are, in general, relatively simple. This is
due to the limited number of ingredients that are able to withstand the harsh chemical or thermal environments that
fluoroelastomers are exposed to.
General Compounding Ingredients
Fluoroelastomer ..........................................................................................100
Acid Acceptor(s).........................................................................................6-20
Filler ...........................................................................................................0-80
Processing Aids ...........................................................................................0-2
Curatives (May be incorporated in polymer) ................................................1-4
Inorganic Bases
(Acid Acceptors)
Inorganic bases commonly used in compounding fluoroelastomers include the following:
Ca(OH)2 Calcium Hydroxide
MgO Magnesium Oxide
PbO Litharge
PbHPO3 “Dyphos”
CaO Calcium Oxide
ZnO Zinc Oxide
Inorganic bases affect both the rheological and the physical properties. The best balance of properties will be achieved by
using a combination of calcium hydroxide and magnesium oxide. The following tables illustrate the change in properties
resulting from variations in the ratio of calcium hydroxide and magnesium oxide.
The general compounding data was generated in our Application and Product Development Laboratory and should be used
only as a guide for compounding. Potential differences may arise due to differences in raw materials and processing techniques. Materials should be processed and evaluated in the consumer’s facility to verify the properties.
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Changes in Properties with Variations in Calcium Hydroxide and Magnesium Oxide Ratios
(Dumbbell Test Specimens)
Effect of Ca(OH)2/MgO ratios using Dyneon™ FE 5640Q
Samples
A
B
C
D
E
F
100
100
100
100
100
100
30
30
30
30
30
30
Ca(OH)2
3
3
3
6
6
—
Elastomag 170
3
6
9
3
9
18
136
139
142
139
145
148
ML (in-lb)
1.5
1.8
1.8
1.7
2.3
2.7
MH (in-lb)
25.5
22.8
25.4
26.0
19.2
8.5
ts2 (min)
3.1
2.6
2.0
2.4
1.7
1.8
t’50 (min)
4.4
4.1
2.6
3.3
2.5
2.6
t’90 (min)
6.6
6.2
3.9
5.1
4.2
7.4
112
120
112
114
120
Composition
FE 5640Q
N-990
Formula Weight (grams)
MDR 177°C (350°F) for 12 min.
Mooney Scorch 121°C (250°F) for 30 min.
Initial Viscosity (MU)
Minimum Viscosity (MU)
99
39
44
44
42
51
57
T’3 (min)
>30
>30
>30
>30
>30
>30
T’10 (min)
>30
>30
>30
>30
>30
>30
T’18 (min)
>30
>30
>30
>30
>30
>30
<3
<3
<3
<3
<3
<3
1410
1500
1520
1435
1530
1335
Elongation (%)
245
245
260
250
280
536
100% Modulus (psi)
580
620
690
615
550
335
Hardness (Shore A)
74
74
74
75
74
74
122
131
129
129
146
187
Pts. Rise in 30 min. (MU)
Press Cure 177°C (350°F) for 10 min.
Tensile (psi)
Tear Die C on Press Cure 177°C (350°F) for 10 min.
Tear (ppi)
Post Cure 232°C (450°F) for 16 hours
Tensile (psi)
2025
2075
2120
2080
2170
1595
Elongation (%)
220
210
200
210
215
380
100% Modulus (psi)
710
755
865
820
740
470
Hardness (Shore A)
74
74
75
75
76
76
139
136
135
146
156
10
9
20
59
12
11
18
68
Tear Die C on Post Cure 232°C (450°F) for 16 hours
Tear (ppi)
132
Compression Set (Room temp for 70 hours) (O-rings)
Average Compression Set (%)
8
11
Compression Set (200°C (392°F) for 70 hours) (O-rings)
Average Compression Set (%)
10
12
Note:
Compound F showed signs of blisters on the surface of the pressed sheets due to low state of cure.
FE 5640Q is a medium viscosity, di-polymer of vinylidene fluoride/hexafluoropropylene with an incorporated cure
package, designed primarily for o-ring applications.
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Changes in Properties with Variations in Calcium Hydroxide and Magnesium Oxide Ratios
(Dumbbell Test Specimens)
Effect of MgO/Ca(OH)2 ratios using Dyneon™ FE 5642Q
Samples
A
B
C
D
E
F
100
100
100
100
100
100
30
30
30
30
30
30
Ca(OH)2
3
3
6
6
9
—
Elastomag 170
3
6
3
9
3
18
136
139
139
145
142
148
Composition
FE 5642Q
N-990
Formula Weight (grams)
MDR 177°C (350°F) for 12 min.
ML (in-lb)
1.5
1.8
1.7
2.3
1.8
2.6
MH (in-lb)
17.5
14.3
18.2
11.0
18.1
4.2
ts2 (min)
2.5
2.1
1.8
1.3
1.5
N/A
t’50 (min)
3.7
3.4
2.5
1.9
2.1
1.3
t’90 (min)
6.2
6.4
4.2
5.4
3.5
4.7
108
108
112
117
116
N/A
40
45
43
52
46
N/A
t’3 (min)
>30
>30
>30
>30
>30
N/A
t’10 (min)
>30
>30
>30
>30
>30
N/A
t’18 (min)
>30
>30
>30
>30
>30
N/A
<3
<3
<3
<3
<3
N/A
1465
1535
1460
1545
1460
N/A
Elongation (%)
395
435
355
505
365
N/A
100% Modulus (psi)
405
395
430
340
470
N/A
Hardness (Shore A)
69
69
70
72
72
N/A
127
141
134
159
138
N/A
Mooney Scorch 121°C (250°F) for 30 min.
Initial Viscosity (MU)
Minimum Viscosity (MU)
Pts. Rise in 30 min. (MU)
Press Cure 177°C (350°F) for 10 min.
Tensile (psi)
Tear Die C on Press Cure 177°C (350°F) for 10 min.
Tear (ppi)
Post Cure 232°C (450°F) for 16 hours
2195
2420
2235
2080
2185
N/A
Elongation (%)
Tensile (psi)
300
305
275
315
260
N/A
100% Modulus (psi)
470
480
555
430
570
N/A
Hardness (Shore A)
70
69
70
71
73
N/A
151
142
152
144
N/A
15
36
16
N/A
12
34
16
N/A
Tear Die C on Post Cure 232°C (450°F) for 16 hours
Tear (ppi)
143
Compression Set (Room temp for 70 hours) (O-rings)
Average Compression Set (%)
14
21
Compression Set (200°C (392°F) for 70 hours) (O-rings)
Average Compression Set (%)
13
17
Note:
Compound F sheets had severe blisters upon demolding, no further testing.
FE 5642Q is a medium viscosity, dipolymer of vinylidene/hexafluoropropylene with an incorporated cure package
designed for molded goods application.
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Filler Systems
Black
ASTM Code
MT Medium Thermal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N-990
SRF Semi-Reinforcing Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N-787
N-774
N-762
HAF High Abrasion Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .N-326
N-330
Carbon Black Comparison Table (for equivalent Durometer)
1 part N330 = 2.5 parts N990
1 part N550 = 2.4 parts N990
1 part N650 = 2.3 parts N990
1 part N660 = 2.0 parts N990
1 part N787 = 1.9 parts N990
1 part N774 = 1.9 parts N990
1 part N762 = 1.6 parts N990
Non-Black (Mineral)
Tradename
Silica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Minusil
Oxides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Mapico-Tan-10 (Fe2O3•Zn0)
ZnS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sachtolith L
CaCO3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Calwhite
Ba(SO4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Barytes
Calcium Metasilicate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Nyad 400
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Outlined below are typical compounds of this type:
A
Dyneon FC 2174..................................................................................100
Dyneon FC 2145 ........................................................................................
Dyneon FC 2172 .......................................................................................
Dyneon FC 2152 .......................................................................................
Dyneon FC 2230 .......................................................................................
Dyphos ......................................................................................................
H-762 Black ...............................................................................................
MT Black (N-990) .....................................................................................3
Ca(OH)2 ....................................................................................................6
MgO (Maglite D)......................................................................................3
Carnauba Wax.......................................................................................0.5
B
50
50
1
C
2
3
3
0.5
1.5
Typical Rheological Properties
• Cure ODR 177°C (350°F)
Minimum ........................................................................................11.0
Time to 1 pt. rise ...............................................................................4.6
Time to 30 in./lb. torque.....................................................................6.2
Torque at 12 min.................................................................................77
9.0
4.2
6.1
41
8.0
5.4
8.0
35
Typical Physical Properties
• Press Cure 10 min., 177°C (350°F)
Tensile (psi) ....................................................................................1000
Elongation (%) .................................................................................275
100% Modulus (psi) .........................................................................258
Hardness (Shore A).............................................................................55
1000
480
163
47
1442
529
158
50
• Post Cure 16 hrs. @ 232°C (450°F)
Tensile (psi) ....................................................................................1450
Elongation (%) .................................................................................250
100% Modulus (psi) .........................................................................265
Hardness (Shore A) ............................................................................55
Tear Strength, Die C pli.......................................................................77
1300
430
148
47
91
• Heat Aging 70 hrs. @ 276°C (528°F)
Tensile (psi) ....................................................................................1150
Elongation (%) .................................................................................255
100% Modulus (psi) .........................................................................229
Hardness (Shore A).............................................................................53
840
420
115
45
• Compression Set (%)
22 hrs. 200°C (392°F) ........................................................................6.5
70 hrs. 200°C (392°F) .....................................................................14.6
70 hrs. 149°C (300°F) ........................................................................1.2
12.1
24.9
8.4
50
50
12
3
18 hrs. @ 400°F
1477
442
183
50
Some of the interest in low durometer fluoroelastomers is a result of upgrading from silicones to fluoroelastomer. In doing
this consideration should be given to the fact that some compromises are made in properties as the fluoroelastomer
durometer is reduced. These compromises include:
Lower physical properties—In general, the lower the durometer below 55, the lower the properties. However, the
differences are not always great.
Less compression set resistance—The result of lower crosslink densities and process aids/plasticizers.
Slower cures—This can be increased using small amounts of accelerator, such as Dynamar™ FC 2172 or Dynamar™ FC 5166.
Higher cost—In comparing compounds over the range of 45-55 duro, the higher level of fillers required at 55 duro may be
partially offset by diluting with lower cost raw gum. In 45 duro stocks, plasticizers can aid processability and also help keep
costs down.
Before specifying a low durometer compound, it might pay to consider one with a higher durometer rating that offers similar
performance characteristics. For more information on the effect of durometer ratings in specific applications, contact your
Dyneon Technical Representative.
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Processing Aids
Type
Effect
DBS (Dibutyl Sebecate)
Lowers Viscosity
DOP (Dioctyl Pthalate)
Lowers Viscosity
Carnauba Wax .............................................................................Improves flow, surface, and mold release but affects
compression set.
Polyethylene................................................................................Improves mold release
Practical Use Levels ....................................................................0.5 to 3 phr
Use only when necessary because of adverse effect on
shrinkage, heat resistance and compression set resistance.
Cure Systems
• Diamine — Added by molder
Dicinnamylidene hexane diamine or Diak® No. 3
Hexamethylene diamine carbamate Diak® No. 1
• Dihydroxy — Incorporated by manufacturer in most cases
Hexafluoropropylidene diphenol (crosslinker)/Triphenylbenzylphosphonium chloride (accelerator)
• Peroxide — Added by molder
2,5-dimethyl-2,5 Di(t-butyl peroxy) hexane/Triallylisocyanurate (coagent)
Each cure system has advantages and disadvantages
Effects of Cure Systems
Typical Properties of Vulcanizate
Compound
Dyneon™ FC 2260
MT Black (N-990)
MgO (Maglite® Y)
MgO (Elastomag 170)
Calcium Hydroxide
Varox DBPH-50 HP
TAIC
Diamine (Diak® No. 3)
Dihydroxy
Accelerator
Zn0
Diamine
A
Dihydroxy
B
Peroxide
C
D
100
30
10
—
—
—
—
2.5
—
—
—
100
30
—
3
6
—
—
—
1.8
0.6
—
100
38
—
—
—
2.5
3
—
—
—
5.0
100
38
—
—
3
2.5
3
—
—
—
—
90.5
5.61
7.22
8.71
66.7
11.00
16.44
19.60
48.1
>30
>30
>30
53.9
>30
>30
>30
22.5
90.5
1.9
56.5
83.7
21.0
103.0
2.1
62.0
94.8
16.0
68.5
1.9
42.3
63.3
17.5
75.0
1.7
46.3
69.3
2.7
18.0
1.8
4.4
9.2
2.8
20.7
1.3
2.2
3.9
2.2
12.6
1.0
1.6
4.0
2.3
14.6
0.9
1.6
4.6
Original Properties
Mooney Scorch MS250 30’
Minimum
t3
t10
t18
ODR, 3.0°arc, 12 minutes @ 177°C (350°F)
Minimum Torque, “ML”, in/lb
Maximum Torque, “MH”, in/lb
Ts2, minutes
t’ 50, minutes
t’ 90, minutes
MDR, 0.5°arc, 12 minutes @ 177°C (350°F)
Minimum Torque, “ML”, in/lb
Maximum Torque, “MH”, in/lb
Ts2, minutes
t’50, minutes
t’90, minutes
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Physical Properties, Press cure 15 min @ 177°C (350°F)
Tensile, psi
Elongation, %
100% Modulus, psi
Hardness, Shore “A”
1440
220
660
71
1295
235
650
74
1605
295
450
69
1790
270
505
71
1960
160
915
75
1980
200
890
74
2185
270
570
72
2230
245
595
72
53
17
34
32
Physical Properties, Post cure 16hrs @ 232°C (450°F)
Tensile, psi
Elongation, %
100% Modulus, psi
Hardness, Shore “A”
Compression Set, ASTM D395
70hrs @ 200°C, %set
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Pigments
Color
Trade Name
Red ................................................................................................Harwick Stan-Tone D-2000, D-2005
Bayferrox 160M
Yellow ............................................................................................Stan-Tone DC-445
Shepard No. 14
Green .............................................................................................Harwick Stan-Tone D-5005; Akrochem 414
Shepard No. 179
Blue................................................................................................Harwick Stan-Tone D-4006, D-4900
Brown ............................................................................................Shepard No. 10
Mapico® 617
Shepard No. 19
Orange ...........................................................................................Harwick Stan-Tone D-7003
Mapico® 297
Bayferrox 115M
Use With Non-Black Fillers ZnS or ZnO
Effects of Contamination
• Sulfur may prevent/retard cure or cause blisters
• Water will accelerate cure
• Synthetic rubbers will adversely affect:
– Physical properties
– Rheological properties
– Heat age properties
Blends of Fluorocarbon Elastomers
• Can be used to change:
– Compound viscosity
– Level of curatives
• Can be used to affect processing or properties
Blending Fluorocarbon Elastomers
The blending or dilution of an incorporated cure polymer with that of a raw gum polymer will change certain physical
properties and flow characteristics. The most common reasons for blending a raw gum polymer with an incorporated cure
gum would be to:
• increase elongation
• Iower modulus
• improve tear strength
• increase or lower compound viscosity (depending on which polymers are involved)
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Blending Dyneon™ Incorporated Cure Gums with Raw Gum
A
B
C
D
E
F
G
80
60
80
60
80
60
20
40
20
40
20
40
Composition
FE 5640
100
FC 2145
FC 2230
FC 2178
N-990
30
30
30
30
30
30
30
Ca(OH)2
6
6
6
6
6
6
6
Elastomag 170
3
3
3
3
3
3
3
MDR 177°C (350°F) for 12 min.
ML (in-lb)
2.0
1.0
1.0
1.0
1.0
2.0
3.0
MH (in-lb)
25.0
18.0
11.0
18.0
11.0
18.0
14.0
ts2 (min)
2.5
2.5
2.8
2.3
2.5
2.1
1.9
t’50 (min)
3.4
3.4
4.0
3.1
3.5
2.9
2.8
t’90 (min)
4.7
4.8
6.8
4.2
5.7
3.9
4.4
1425
1415
1360
1415
1420
1550
1580
Elongation (%)
280
380
495
310
515
350
505
100% Modulus (psi)
610
440
305
485
300
475
355
Hardness (Shore A)
76
72
69
72
68
71
69
117
139
145
130
145
133
148
2080
2180
2055
2110
2105
2160
2305
Elongation (%)
215
275
350
250
340
255
330
100% Modulus (psi)
770
605
370
560
365
585
425
Hardness (Shore A)
77
75
70
70
71
72
71
136
142
153
142
155
151
160
Press Cure 177°C (350°F) for 10 min.
Tensile (psi)
Press Cure Tear Die C
Tensile (ppi)
Post Cure 232°C (450°F ) for 16 hours
Tensile (psi)
Post Cured Tear Die C
Tensile (ppi)
Heat Aged 270°C (518°F) for 70 hours
2045
1900
1770
1745
1710
2035
1820
Elongation (%)
Tensile (psi)
205
250
370
240
370
260
335
100% Modulus (psi)
705
510
360
470
320
515
365
Hardness (Shore A)
77
75
70
74
72
73
71
33
16
31
14
26
30
15
26
14
23
Compression Set (Room Temp for 70 hours) - O-rings
Compression Set (%)
9
16
Compression Set (200°C (392°F) for 70 hours) - O-rings
Compression Set (%)
13
16
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Blends with Synthetic Elastomers
Peroxide Curable Fluorocarbons can be blended with:
• Fluorosilicones
• Silicones
• Nitriles
• Epichlorohydrin
• EPDM
Blending Fluorocarbon/Fluorosilicone Elastomers
Compound
A
(80/20)
Dyneon FC 2260 ...................................................................80
Fluorosilicone* .......................................................................20
Iron Oxide (Mapico 297) .........................................................—
Silicon Dioxide (Aerosil R-972) ..............................................20
Fumed Silica (Cab-O-Sil HS-5) ..............................................6.5
Ca(OH)2 ....................................................................................3
Peroxide(Luperco 101 XL) .....................................................1.3
TAIC (Diak No. 7) ..................................................................1.1
B
(60/40)
C
(60/40)
60
40
—
20
6.5
3
1.3
1.2
60
40
2.5
15
—
—
1.4
1.6
23
2.2
4.2
81
12
2.7
8.1
53
Typical Rheological Properties—ODR @ 177°C (350°F), 100 CPM, 3° Arc, 12 min.
Minimum torque, in.-lbs. .......................................................39
Time to 1 in.-lb. rise, (minutes) .............................................3.0
Time to 80 in.-lb. torque, (minutes) ......................................4.2
Maximum torque @ 12 minutes,in.-lbs ..................................95
*Dow Corning LS-420 or General Electric FSE-2080
Typical Physical Properties
Cure: 15 Min. @ 177°C (350°F)
Post Cure: 1 6 Hr. @ 200°C (392°F)
Specific Gravity ..................................................................1.73
Tensile, psi (MPa) ...............................................................2160 (14.9)
Elongation, % ......................................................................290
100% Modulus, psi (MPa) ...................................................740
(5.1)
Hardness, ShoreA ..................................................................83
Compression Set (Method B—0.1 39" O-ring), %
70 hr. @ 149°C (300°F) ..........................................................28
70 hr. @ 200°C (392°F) ..........................................................50
TR10, °C (°F) ..........................................................................–21
(–6)
Brittle Pt., °C (°F) .................................................................–30 (–22)
Torsional Modulus, psi x 104
–20°C (-4°F) ..........................................................................1.6
–30°C (-22°F) ........................................................................4.9
–40°C (-40°F) ........................................................................7.6
–50°C (-58°F) ........................................................................9.7
–60°C (-6°F) ........................................................................11.0
16
1.66
1580 (10.9)
235
660
(4.6)
79
25
50
(–24)
(–43)
0.4
1.7
2.7
3.0
4.8
–11
–45
1.63
1390 (9.6)
330
320 (2.2)
63
18
54
–24 (–11)
–53 (–63)
0.3
1.3
2.1
2.7
3.6
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Effects of Crosslink Density
Typical Properties of Vulcanized Compound
Dyneon™
FC 2176
• Relative level of crosslink density ......................................(Low)
• Gum Viscosity
ML 1 + 10 @ 121°C (250°F) ...............................................28
• Compound Formula
Gum Stock .......................................................................100
MT Black (N-990) ................................................................30
Ca(OH)2 .................................................................................6
MgO (Maglite® D) .................................................................3
• Rheological Properties—Monsanto ODR @ 177°C (350°F)
Minimum torque, in.-lbs ...................................................10.5
Time to 1 in.-lb. rise, (minutes) ..........................................3.5
Time to 50 in.-lb torque, (minutes) ....................................5.7
Maximum torque @ 12 minutes, in.-lbs ..............................67
Dyneon™
FC 2181
(Medium)
Dyneon™
FC 2174
(High)
43
40
100
30
6
3
100
30
6
3
14.0
3.6
5.5
85
12.5
3.8
5.8
107
Physical Properties—Press cure 10 minutes 177°C (350°F)/Post cure 20 hours 260°C (500°F)
Tensile Strength (psi) ......................................................1900
100% Modulus (psi) .........................................................525
Elongation (%)...................................................................280
Hardness, Shore A ..............................................................73
Tear Strength (psi), Die C .................................................194
• Compression Set (Method B)
0.139 O-ring
70 hours - 24°C (75°F) (%) .................................................18
70 hours - 200°C (392°F) (%) .............................................23
336 hours - 200°C (392°F) (%) ...........................................48
1/2 inch disk
70 hours - 24°C (75°F) (%) .................................................18
70 hours - 200°C (392°F) (%) .............................................16
2100
625
265
74
183
2100
875
200
75
162
16
15
34
9
13
28
18
10
9
10
Compounding for O-Ring Applications
Simple parts such as O-rings can be made via injection and compression molding.
Polymer Selection:
• Polymer with high crosslink density (low compression set)
• Polymer must have good mold release characteristics
Suggested O-Ring Polymers:
17
Filler Selection:
• Black or non-black
• MT and Austin blacks yield best compression set resistance
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Compounding for Molded Goods Applications
Molded goods are typically parts that require improved mold flow, mold release characteristics and a specific state of cure
in the polymer. These parts commonly have complex shapes that may include undercuts or ribbed sections that cause
demolding problems, i.e. tearing, if the proper compound is not used. Successful molding techniques consist of injection,
transfer and compression molding.
Polymer Selection:
• Polymer with low crosslink density (high elongation)
• Polymer must have good mold release characteristics
Filler Selection:
• Black or non-black
• SRF and HAF blacks yield the best hot tear strength
• High ratio of MgO to Ca(OH)2 improves tear strength
Suggested Molded Goods Polymers:
Compounding for Calendering Process
Limiting Factors on Compound:
• Intended end-use of calendered sheet (i.e. die cut gaskets, fabric lamination, sheet stock)
• Temperature range of calender
• Thickness of stock
Suggested Calendering Formulations:
Low/Medium Viscosity inc. cure polymer
Magnesium Oxide
Calcium Hydroxide
MT Black (N-990)
Carnauba Wax
Polyethylene
100
3
6
10-60
1
1
18
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Page 19
Compounding for Extrusion Process
Compound Considerations:
• Extrudate surface requirements
• Configuration of finished part
• Temperature capabilities of processing equipment (Choose process aid that will be effective.)
• End-use requirements
Typical Recommendations:
• Medium to low viscosity gum
• 1-2 PHR process aid (DBS/Polyethylene/Wax)
• Barrel and die temperatures at 65 to 104°C (150 to 220°F)
O-ring Cord
Dyneon™ FE 5620, FE 5640Q ...................................................................100
Dyneon FC 2120, FE 5730Q, FE 5830Q .......................................................—
Magnesium Oxide .........................................................................................3
Calcium Hydroxide .........................................................................................6
MT (N-990) ..............................................................................................10-50
SRF (N-762) ...................................................................................................—
BaSO4 or CaCO3 ............................................................................................—
Carnauba Wax .......................................................................................0.5-1.0
Poly AC 6A ...................................................................................................—
Hose/Tubing
—
100
3
6
—
10-20
20-40
0.5-1.5
0-0.5
Suggested Extrusion Grade Polymers:
Compounding for Metal Adhesion
Acid Acceptors:
• Higher levels of metal oxides, e.g. MgO, promotes better adhesion.
• Litharge and dyphos hurt adhesion.
• Addition of 3-5 PHR calcium oxide improves adhesion.
Fillers:
• Black/non-black used in fluoroelastomers that do not adversely affect cure speed or aging properties.
• Process aids are only used if necessary.
Recommended Formulations:
Dyneon FE 5642Q, FE 5622Q, FC 2123 ....................................................100
Magnesium Oxide ..........................................................................................3
Calcium Hydroxide .........................................................................................6
Calcium Oxide...........................................................................................0-5.0
MT Black (N-990) ......................................................................................5-50
Higher durometers are harder to bond.
19
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Page 20
ISO 9001/QS-9000
All Dyneon fluoroelastomers are manufactured at ISO 9001 registered facilities.
Dyneon fluoroelastomers produced in North America are manufactured at
QS-9000 registered facilities.
™
Technical Information and Test Data
Technical information, test data, and advice provided by Dyneon personnel are based
on information and tests we believe are reliable and are intended for persons with
knowledge and technical skills sufficient to analyze test types and conditions, and to
handle and use raw polymers and related compounding ingredients. No license
under any Dyneon or third party intellectual rights is granted or implied by virtue of
this information.
Safety/Toxicology
Follow recommended handling precautions for use of Dyneon™ Fluoroelastomers.
General handling precautions include: (1) Store and use all Dyneon fluoroelastomers only in well ventilated areas. (2) Do not smoke in areas contaminated with
dust from Dyneon fluoroelastomers. (3) Avoid eye contact. (4) After handling
Dyneon fluoroelastomers wash any contacted skin with soap and water.
Potential hazards, including evolution of toxic vapors, do exist during compounding or processing under high temperature conditions. Before processing Dyneon
fluoroelastomers, consult the product MSDS (Material Safety Data Sheet) and follow all label directions and handling precautions. You should also read and follow
all directions from other compound ingredient suppliers. Material Safety Data
Sheets on Dyneon products are available from your Dyneon Sales Representative
or by dialing 651-733-5353.
Important Notice:
Because conditions of product use are
outside Dyneon’s control and vary widely,
user must evaluate and determine whether
a Dyneon product will be suitable for user’s
intended application before using it.
The following is made in lieu of all
express and implied warranties
(including warranties of merchantability and fitness for a particular purpose):
If a Dyneon product is proved to be
defective, Dyneon‘s only obligation,
and user’s only remedy, will be, at
Dyneon‘s option, to replace the quantity
of product shown to be defective
when user received it or to refund
user’s purchase price. In no event will
Dyneon be liable for any direct, indirect,
special, incidental, or consequential
loss or damage, regardless of legal
theory, such as breach of warranty or
contract, negligence, or strict liability.
© Dyneon 2001
Issued: 01/01
Printed in USA
98-0504-1324-8
All Rights Reserved
Dyneon LLC
6744 33rd Street North
Oakdale, MN 55128
Phone:+1 800 723 9127
+1 651 733 5353
Fax:+1 651 737 7686
www.dyneon.com
Dynamar and Dyneon are trademarks of Dyneon.