DuPont TM Viton®Introduction to Our Next Generation DiPolymers (NGDP)
DuPont Performance Polymers ConferenceDuPont Performance Polymers Conference
May 20th, 2010May 20th, 2010
AlbergoAlbergo CoccaCocca HotelHotel
SarnicoSarnico ((BgBg))
Patrick Patrick PagliaPaglia
2
Outline
Background: Why Develop the Next Generation Dipolym er (NGDP) Product Line
NGDP Product Line
NGDP for Increased Productivity
NGDP for Improved Part Performance
Summary
3
TechnologyTechnology Evolution of VitonEvolution of Viton ®®
Impr
oved
Pro
cess
ing
Improved end-use Performance
GF and
GLT
GF andGF and
GLTGLT
APAAPAAPA
Viton® A
Diak™ 1
VitonViton®® AA
DiakDiak™™ 11
E-60CEE--60C60C
VTR-9160
A-601C
A-206C
A-401C
E-60C
VTRVTR--91609160
AA--601C601C
AA--206C206C
AA--401C401C
EE--60C60C
NGDPNGDPNGDP
Impr
oved
Pro
cess
ing
Improved end-use Performance
GF and
GLT
GF andGF and
GLTGLT
APAAPAAPA
Viton® A
Diak™ 1
VitonViton®® AA
DiakDiak™™ 11
E-60CEE--60C60C
VTR-9160
A-601C
A-206C
A-401C
E-60C
VTRVTR--91609160
AA--601C601C
AA--206C206C
AA--401C401C
EE--60C60C
NGDPNGDPNGDP
APA delivered break-through technology inspecialty fluoroelastomersin 2002.
NGDP balances the Viton®portfolio by advancing thestate of the art in dipolymerfluoroelastomers
4
Why Develop A Next Generation Dipolymer Product Lin e?Why Develop A Next Generation Dipolymer Product Lin e?
Key Objective: Key Objective: Create A Superior Fluoroelastomer Dipolymer (66%F) OfferingCreate A Superior Fluoroelastomer Dipolymer (66%F) Offering
• Improved flow in injection and transfer molding• Improved compression set resistance• Fast cure rate
Resulting In Resulting In
•• Increased productivity Increased productivity •• Improved final part performanceImproved final part performance
5
NGDP NGDP -- Polymer LinePolymer Line
• 20 ML VTX-7619 & 70 ML VTX-7620 gum polymer sheets• Bisphenol curable
• VTX-7619 has (ML@121°C) of 20
• VTX-7619 useful for injection and transfer molding
• VTX-7620 has (ML@121°C) of 70
• VTX-7620 targeted at compression molding
• Can be compounded with VC50/VC30
• Can be blended with precompounds (PCs)
• Can be blended to make polymers ranging from 20ML to 70ML
6
NGDP NGDP -- PrecompoundPrecompound LineLine
• precompounds forming NGDP triangle• 60 Mooney – standard cure rate – VTR-7621
• 20 Mooney – standard cure rate – VTR-7622
• 20 Mooney – slower cure rate – VTX-7624
• Other precompound developed• 35 Mooney – precompound (for bonded parts) – VTX-7625
7
NGDP NGDP –– Compound Data with Gums VTXCompound Data with Gums VTX --7619 & VTX7619 & VTX--76207620
In typical compounds, NGDPgums yield fast, square curecurves while retaining excellent scorch safety
E113064 -Compound # A72-06 A72-07
Descr.
70 Mooney, VTX-7620 std. cmpd
20 Mooney, VTX-7619 std. cmpd
VTX-7620 sheet 97.3 -VTX-7619 sheet - 97.3VC50 2.2 2.2VC30 0.5 0.5ELASTOMAG 170 3 3N990 30 30Ca(OH)2 HP-XL 6 6
Mooney Scorch @ 121°CMinimum 56 205 Pt. Rise (min) 23.4 >3010 Pt. Rise (min) >30 -
MDR @ 177°C, 0.5 Degree Arc, 100 Range, 6 Minute Cl ock M-L (dNm) 2.6 0.6ts-2 (min) 1.0 1.2t'50 (min) 1.3 1.3t'90 (min) 1.9 2.1t'95 (min) 2.3 2.6M-H (dNm) 32.7 26.7
8
Product Offer Product Offer -- NGDP Precompound NGDP Precompound ““ TriangleTriangle ””
NGDP Pcmpd Triangle; Mooney vs ts2 time
0
10
20
30
40
50
60
70
0.8 1.0 1.2 1.4 1.6 1.8
MDR ts2 time (min)P
cmpd
Moo
ney,
ML
@ 1
21°C
High viscosity
Low viscosity Fast cure /
short flowSlower cure / Longer flow
Injection molded O-ring pcmds like
VTR-9160 are in 30-35 Mooney area.
VTR-9160
Benefits:Benefits:• Blending options:
• to vary compound viscosity • to vary compound ts2 & tc90 cure speed
• Increased compounding flexibility• Reduced inventory levels
9
NGDP precompound triangle, Mooney vs. ts2 time
10
20
30
40
50
60
1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
ts2 time (minutes)
Pcm
pd M
oone
y (M
L) @
121
°C
aa
VTR-7621
VTX-7624VTR-7622
Product Offer Product Offer -- NGDP Precompound NGDP Precompound ““ TriangleTriangle ”” ::Increased Compounding Flexibility with Precompounds and GumsIncreased Compounding Flexibility with Precompounds and Gums
Blends can be made to modify viscosity, cure speed or both. Blends can be done with VTR-7619 and 7620 as well
10
Product Construction with NGDP Precompound Product Construction with NGDP Precompound TriangleTriangle
• NGDP triangle precompounds can be blended with one another to replicate the nominal viscosity & cure characteristics of current commercial precompounds
• In this example
1- A NGDP blend for compression molding like A401C
2- A second NGDP blend is made for injection molding like VTR-9160
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NGDP:NGDP: Increased ProductivityIncreased ProductivityThrough Broader Operating WindowThrough Broader Operating Window
Benefits:Benefits:• Option to reduce process aid levels -> further improved compression set resistance • Option to increase filler levels and reduce curative level while maintaining equal final viscosity, compression set resistance, and hardness• Injection molding flow improved – NEXT SLIDE
Current technology NGDP blend
VTR-9160 VTX-7622 / VTX-7621
Starting Pcmpd Mooney @ 121°C 35 35
71 55
36 20
Full compound Mooney after black and metal oxides added
Mooney viscoisty rise when compounded
NGDP pcmpd blend
VTX-7622 / 7623 16
31
15
~20 Mooney Pcmpd ~35 Mooney Pcmpds
viscosity
Current technology NGDP blend
VTR-9160 VTX-7622 / VTX-7621
Starting Pcmpd Mooney @ 121°C 35 35
71 55
36 20
Full compound Mooney after black and metal oxides added
Mooney viscoisty rise when compounded
NGDP pcmpd blend
VTX-7622 / 7623 16
31
15
~20 Mooney Pcmpd ~35 Mooney Pcmpds
viscosity
Current technology NGDP blend
VTR-9160 VTX-7622 / VTX-7621
Starting Pcmpd Mooney @ 121°C 35 35
71 55
36 20
Full compound Mooney after black and metal oxides added
Mooney viscoisty rise when compounded
NGDP pcmpd blend
VTX-7622 / 7623 16
31
15
~20 Mooney Pcmpd ~35 Mooney Pcmpds
viscosity
In a 35 Mooney viscosity (MV) precompoundcomparison, a NGDP black loaded compound shows a16 point lower Mooney viscosity rise than current standard Viton® VTR-9160
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NGDP: Increased Productivity NGDP: Increased Productivity Through Better Injection Molding (IM) FlowThrough Better Injection Molding (IM) Flow
Benefits:Benefits:• faster IM fill times - shorter cycle times• option to use more cavities tool at a given press tonnage • option to use smaller runners resulting in less scrap
• 35 Mooney NGDP PC blend shows superior flow by filling the mold much faster than current standard 35 Mooney VTR-9160
• 20 Mooney NGDP PC blend can lower mold fill times even further, or can be injected at lower pressures
(Standard)
-214 O-ring Injection molding fill times (sec.)
0
2
4
6
8
10
12
14
50 60 70 80 90 100 110 120
Injection pressure (bars)
Inec
tion
time
(s)
.
VTR-916035 Mooney NGDP blend20 Mooney NGDP blend
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Lab data confirms: Excellent Injection Molding (IM) Flow Lab data confirms: Excellent Injection Molding (IM) Flow of NGDP Precompoundsof NGDP Precompounds
• Same precompound viscosity• Lower compound viscosity with NGDP
0
2
4
6
8
10
12
14
16
0 5 10 15 20 25 30
Shot #
Inje
ctio
n tim
e - s
ec
Standard
NGDP
ML (1+10), 121 CPC 33cmpd 55MDR t90 2.2 min
ML (1+10), 121 CPC 32cmpd 64.3MDR t90 2.7 min
40 cavity D-214 O-ring, injection molding
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BenefitsBenefits• Shorter mold closed time –> shorter cycle times
NGDP: Increased Productivity NGDP: Increased Productivity Through Fast Cure RatesThrough Fast Cure Rates
Compoundsidentical BpAF and accelerator = to standard A-type Viton® VTR-9129 recipe 30phr N990 black
Standard NGDP
t95 (min) 3.1 2.5 MH (dN-m) 30.3 30.2
Standard NGDP
t95 (min) 4.7 3.8 MH (dN-m) 22.3 22.9
9 MgO
Torque at MH % increase3 min 6 min after 3 min
VTR-9129 15.8 22.3 29.1VTX-7604 20.8 22.9 9.2
0
5
10
15
20
25
0 1 2 3 4 5 6
Time (min)T
orqu
e (d
N-m
) NGDP
Standard
177 C 9 MgO
0
5
10
15
20
25
30
35
0 1 2 3 4
Time (min)
Tor
que
(dN
-m)
177 C
VTX-7604
VTR-9129
6 Ca(OH)2, 3 MgO
Standard
NGDP
9 MgO
Torque at MH % increase3 min 6 min after 3 min
VTR-9129 15.8 22.3 29.1VTX-7604 20.8 22.9 9.2
0
5
10
15
20
25
0 1 2 3 4 5 6
Time (min)T
orqu
e (d
N-m
) NGDP
Standard
177 C 9 MgO9 MgO
Torque at MH % increase3 min 6 min after 3 min
VTR-9129 15.8 22.3 29.1VTX-7604 20.8 22.9 9.2
0
5
10
15
20
25
0 1 2 3 4 5 6
Time (min)T
orqu
e (d
N-m
) NGDP
Standard
177 C 9 MgO
0
5
10
15
20
25
30
35
0 1 2 3 4
Time (min)
Tor
que
(dN
-m)
177 C
VTX-7604
VTR-9129
6 Ca(OH)2, 3 MgO
Standard
NGDP
0
5
10
15
20
25
30
35
0 1 2 3 4
Time (min)
Tor
que
(dN
-m)
177 C
VTX-7604
VTR-9129
6 Ca(OH)2, 3 MgO
Standard
NGDP
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BenefitsBenefits• Lower accelerator levels reduce gas generation that can lead to dieseling or voids -> higher quality parts -> less scrap• Reduced gas generation also permits higher mold temperature for faster cycles
Lab data confirms: Faster Cure Rates for NGDP Lab data confirms: Faster Cure Rates for NGDP PrecompoundsPrecompounds
NGDP gums cure faster than current standard Viton®
Example: 70 Mooney NDGP precompound made with VTX-7620 gum has similar cure rate as A-601C with 12 % lessaccelerator!
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Lab Data Demonstrates:Lab Data Demonstrates:Operating FlexibilityOperating Flexibility Provides Increased Productivity Provides Increased Productivity ……
0
2
4
6
8
10
12
14
16
NGDP 1.1 phrprocess aid
NGDP 0.9 phrprocess aid
NGDP 0.7 phrproces aid
NGDP 0.5 phrprocess aid
Standard 1.1phr process
aid
Inje
ctio
n tim
e -
seco
nds
40 cavity D-214 O-ring, injection molding
• Injection time to fill in a 40 cavity D-214 o-ring mold• Even wih 45 % process aids of the standard Viton®, NGDP flow is better• Less process aids for better end use properties with no processing compromise• With lower levels of process aids, NGDP flows better than standard Viton®…..
17
…… AND Improved PerformanceAND Improved Performance
• … for further better compression set & less surface defects like welding lines
Compression set of injection moulded D-214 o-rings (200 °C / 70 Hr)
10
15
20
25
30
35
40
45
No Post Cure Post Cure 1 Hr /230 °C
Post Cure 4 Hrs /230 °C
Post Cure 16 Hrs /230 °C
% c
ompr
essi
on s
et
NGDP - 0.5 phrprocess aid
NGDP - 0.7 phrprocess aid
NGDP - 0.9 phrprocess aid
NGDP - 1.1 phrprocess aid
Standard - 1.1 phrprocess aid
• NGDP allows shorter post cure times to develop the same compression set of standard Viton® post cured with much longer cycles
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…… while maintaining excellent release propertieswhile maintaining excellent release properties
0
20
40
60
80
100
0 10 20 30 40 50 60 70 80 90Shot #
% r
elea
se Self releasing
Manual release1.1
NGDP0.9
NGDP0.7
NGDP0.5
NGDP1.1Std
19
% of self release at steady state
80
82
84
86
88
90
92
94
96
NGDP 1.10phr
NGDP, 0.90phr
NGDP, 0.70phr
NGDP, 0.50phr
Standard,1.10 phr
% s
elf r
elea
se
20
NGDP: Improved PerformanceNGDP: Improved PerformanceThrough Excellent Compression SetThrough Excellent Compression Set
Benefits:Benefits:• Option for short post cure cycle resulting in faster production cycles • High quality sealing• Meet demanding end users specifications
30-35 Mooney injection molding stocks 40-60 Mooney c ompression molding stocks
Compression set, O-rings, 336 hr @ 200°C
21
24
27
30
33
36
39
A401C control A601C control NGDP VTX-7621
% C
omp
set
.
4 hr hr @ 250°C postcure16 hr @ 232°C postcure
Compression set @ 200°C, O-rings
1520253035404550
VTR-9160 NGDPblend
NGDPblend2
VTR-9180
% c
omp
set
.
70 hr @ 200°C336 hr @ 200°C
16 hr PC @ 232°C
• 336 hr comp set of low Mooney NGDP blend with process aids is improved –10% better than current VTR-9160 & VTR-9180• High Mooney NGDP comp set best in class. Low C/S with 4 hr PC
21
NGDP: Improved PerformanceNGDP: Improved PerformanceThrough Excellent Sealing PropertyThrough Excellent Sealing Property
22
NGDP: Lab Data Confirms Good Low Temperature NGDP: Lab Data Confirms Good Low Temperature Performance Performance
Benefits:Benefits:• Equivalent or slightly better low temperature sealing
• NGDP does not compromise low temperature Glass Transition (Tg) and TR-10 properties. Same to slight improvement
Low temperature properties
-18.0-17.8
-17.6-17.4-17.2-17.0
-16.8-16.6-16.4
-16.2-16.0
A-401C A-601C NGDP,VTX-7620
NGDP,VTX-7619
A-201C
°C
Tg, 4 hr PCTR-10, 4 hr PC
23
• NGDP O-ring precompounds are formulated like standard 66%F bisphenol curable FKM – like Viton®A201C run as a control in the table to the left
• NGDP shows similar tensile and elongation to A201C
• Physicals & compression set are good with a short 4 hr postcure and optimal with a 16 hr PC
• Fluids resistance to 7700 fluid is similar to A201C
NGDP: Lab Data Confirms Good Physical PropertiesNGDP: Lab Data Confirms Good Physical PropertiesStand.
Descr. VTR-7621 VTR-7622 VTX-7624A201C control
Viton® A 601C - - - -VTR-7621 100 - - -VTR-7622 - 100 - -VTX-7624 - - 100 -Viton® A 201C - - - 100ELASTOMAG 170 3 3 3 3N990 30 30 30 30Ca(OH)2 HP-XL 6 6 6 6
Physical Properties @ R.T. - Original (Cure 7' @ 177°C, Postcure 4 hrs @ 250°C)M-25, MPa 2.0 2.1 1.9 2.3M-100, MPa 6.4 5.2 5.1 6.3Tensile, MPa 14.2 13.4 13.1 14.3Elongation , % 218 231 216 215
Hardness, A, pts 75 80 74 76
Physical Properties @ R.T. - Original (Cure 7' @ 177°C, Postcure 16 hrs @ 232°C)M-25, MPa 2.2 2.3 2.0 2.2M-100, MPa 6.6 5.6 5.2 6.0Tensile, MPa 14.8 13.5 12.9 13.3Elongation , % 220 231 214 208
Hardness, A, pts 76 80 79 75
Compression Set , Method B , O-Rings70 Hrs @ 200°C- PC, 4 hr @ 250°C 14 17 15 17- PC, 16 hr @ 232°C 13 12 15 15
Volume swell - % increase , 7700 Fluid , 70 hr @ 200°C , %- PC1, 4 hr @ 250°C 16.2 16.9 17.7 16.6- PC2, 16 hr @ 232°C 16.0 17.0 17.1 16.6
NGDP precompounds
VTR-7261, 7622,
7624 data sheet
24
Product Offer Product Offer -- NGDP AvailabilityNGDP Availability
• VTX-7619 & 7620 gums available now• Can be compounded with VC50/VC30
• Can be blended with precompounds
• precompounds forming NGDP triangle available• 60 Mooney – standard cure rate VTR-7621
• 20 Mooney – standard cure rate VTR-7622
• 20 Mooney – slower cure rate VTX-7624
• Other precompounds developed• 35 Mooney oil seal precompound (for bonded parts) – VTX-7625
• Sampling quantities available in 2Q 2010
25
Key Messages for NGDPKey Messages for NGDP
• increased productivity
• shorter injection molding fill times
• faster cure rates leading to shorter cycle times
• Shorter post cure times
• Lower process aid levels leading to higher quality yield (fewer parts with defects like flowmarks or knitlines)
• enhanced part performance
• through better compression set resistance
• additional flexibility with available gums and precompounds
• through blend options within in the precompound tria ngle to develop customized formulas for specific applications
26
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.
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