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Kevlar® AP :
Advanced Performance Solution For Hose / Belts / Tires
Presenter :Narendra KajaleTechnical Sales Manager – Kevlar® / Nomex®DuPont Protection Technology (DPT)E I DuPont India Pvt Limited, Mumbai
KEVLAR® is a registered trademark of E. I. du Pont de Nemours and Company
IRE2011
Chennai, India
January 20, 2011
IndexIndex
1.1. What is Kevlar(R) AP?What is Kevlar(R) AP?
2.2. Advantage Kevlar(R) AP : HosesAdvantage Kevlar(R) AP : Hoses
3.3. Advantage Kevlar(R) AP : TyresAdvantage Kevlar(R) AP : Tyres
4.4. Advantage Kevlar(R) AP : BeltsAdvantage Kevlar(R) AP : Belts
1.1. What is Kevlar(R) AP?What is Kevlar(R) AP?
Advantage Kevlar(R) AP : HosesAdvantage Kevlar(R) AP : Hoses
Uses less Qty of Kevlar®
Improved asthetic Appearance
Kevlar® AP Offerings for Automotive Hose
750d 1500d1000d
Deniers
+-oK119
oo+K29AP
oooK29
Elongation%
Modulusgpd
Tenacitygpd
Family
Properties
New Products: Kevlar® 29 Advanced Performance
Commercial
More Kevlar® AP products will be introduced in the future and we look forward to working with
customers to meet specific needs of the trade
Value of Kevlar® AP : Upto 20% Yarn Saving for Similar Performance possible
17%0.8020.9682”
19%0.6130.7601 ½”
21%0.3610.4561”
21%0.3020.383¾”
Yarn Weight Savings (%)
Est. Wt. / 100ft Hose *
Est. Wt. / 100ft Hose *Hose Diameter
KEVLAR®750d 29AP
KEVLAR®1000d 29
ESTIMATED 750 DENIER K29AP WEIGHT SAVINGS vs. 1000 DENIER K29 (KNITTED HOSE of same BP)
* We advise that product performance be verified in each specific case
KEVLAR® 29AP vs. Standard KEVLAR® 29 • Up to a 15% increase in tenacity at equal modulus
• 750d K29 AP offers equal burst pressure using 15-20% less material than 1000d K29 in knitted hose
• Reduced yarn profile with light denier enables possible reductions of cover thickness & improves aesthetic performance of hose
KEVLAR® 29AP vs. Standard KEVLAR® 29 • Up to a 15% increase in tenacity at equal modulus
• 750d K29 AP offers equal burst pressure using 15-20% less material than 1000d K29 in knitted hose
• Reduced yarn profile with light denier enables possible reductions of cover thickness & improves aesthetic performance of hose
KEVLAR® 29AP vs Standard KEVLAR® 29• Similar coverage of tube by yarn
• Potential improvement in adhesion ratings with hoses re-designed with Kevlar® 29AP
• Light denier offers the potential to reduce cover thickness & improves hose appearance• Up to 5% reduction in rubber content of the hose is possible by using 750 denier Kevlar® 29AP
KEVLAR® 29AP vs Standard KEVLAR® 29• Similar coverage of tube by yarn
• Potential improvement in adhesion ratings with hoses re-designed with Kevlar® 29AP
• Light denier offers the potential to reduce cover thickness & improves hose appearance• Up to 5% reduction in rubber content of the hose is possible by using 750 denier Kevlar® 29AP
IMPROVED APPERANCE WITH LIGHT DENIER
Additional Value: Improved Aesthetic Appearance
Light Denier
RE-DESIGNED HOSE WITH KEVLAR® 29AP HAS SIMILAR COVERAGE
Additional Value: Upto 20% Improvement in Fatigue Performance
KEVLAR® 29AP vs. Standard KEVLAR® 29• The light denier advantage:
– Hoses reinforced with light denier Kevlar® retain greater % burst pressure after pressure-vibration-temperature (PVT) impulse tests than hoses reinforced with heavier 1000 and 1500 denier K29 when knitted.
• Kevlar® 29AP shows greater strength retention after bending fatigue than standard Kevlar®K29
KEVLAR® 29AP vs. Standard KEVLAR® 29• The light denier advantage:
– Hoses reinforced with light denier Kevlar® retain greater % burst pressure after pressure-vibration-temperature (PVT) impulse tests than hoses reinforced with heavier 1000 and 1500 denier K29 when knitted.
• Kevlar® 29AP shows greater strength retention after bending fatigue than standard Kevlar®K29
Light Denier
1000d K29
Strength Retention After Scott-Flex Test ASTM D430-06
1.26" Diameter Pulley
K29
K29
K29
K29
AP
K29
AP
K29
AP
0%
20%
40%
60%
80%
100%
2000 3000 4000
Scott Flex Cycles
Ret
aine
d St
reng
th
49%4261500/1 Kevlar®29
60%2881000/1 Kevlar®29
73%195750/1 Kevlar® 29 AP
Burst Pressure Retention after
PVT, %
Predicted initial burst pressure
before PVT (psi)
Sample(Denier/plies)
BURST PRESSURE AFTER IMPULSE*
Test: impulse pressure at 15% of initial burst at 20 cyc/min for 100,000 cycles. EG Fluid temp = 266 °F. Chamber Temp = 266 °F. Vibration = ±20 mm.
IMPROVED FATIGUE PERFORMANCE*
* We advise that product performance be verified in each specific case
Advantage Kevlar(R) AP : TyresAdvantage Kevlar(R) AP : Tyres
Lighter
Less Rubber
More KM
1
2
3
Saving Weight
Saving Raw Material
Higher Life
Light Decitex Kevlar® - Nylon Hybrid CordsLight decitex Kevlar® - nylon hybrid cords can provide the same advantages as homogenous light decitex cords• Reduced ply thickness
• Reduced material consumption
• Reduced weight
• Improved durability
• Increased uniformity
Kordsa Global and DuPont are jointly developing and commercializing new designs of Kevlar®/Nylon hybrid constructions to address performance challenges in tire applications.
Light decitex hybrid cords also exhibit the same benefits in fatigue performance as larger hybrid cords by providing a significant improvement in resistance to compressive fatigue
Hybrid CordsHybrids Engineering cord properties by combining different modulus materials
Light Decitex Hybrid Scott Flex Testing : No Significant drop in Strength seen with hybrid cords
Scott Flex (8.825 cN/tex per cord, 19mm Pulley)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
50,000 100,000 300,000 460,000
Cycles
Ret
aine
d St
reng
th (%
)
670/1 + 690/1 nylon670/1/2
Advantage Kevlar(R) AP : BeltsAdvantage Kevlar(R) AP : Belts
1. Upto 30% Improvement in Fatigue Performance2. Upto 20% Stronger Belts3. Retains Dimensions Throut Life
Light Decitex Yarn – Up to 30% Improvement in Fatigue Performance
Ret
aine
d St
reng
th (%
)
K29 1100/1/2 LM 940/1/2 LM 670/1/3 HT 940/1/2 HT 670/1/3
50.3
71.5 73.4 72.9
66.8
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
Ret
aine
d S
tren
gth
(%)
19mm Pulley, 1,000 cycles
Scott Flex Testing
Light Decitex Yarn – Superior Durability
Initial BRK. STR. (N)
Fatigued BRK. STR. (N)K29 1100/1/2
LM 940/1/2
LM 670/1/3
HT 940/1/2
HT 670/1/3
0.0
50.0
100.0
150.0
200.0
250.0
300.0
350.0
BR
K. S
TR. (
N)
K29 1100/1/2 339.8 170.9
LM 940/1/2 315.8 225.8LM 670/1/3 343.8 252.4
HT 940/1/2 329.2 239.9
HT 670/1/3 347.8 232.3
Initial BRK. STR. (N) Fatigued BRK. STR. (N)
Scott Flex19mm Pulley
1,000 cycles
Contact : Narendra KajaleManager – Technical Sales (Kevlar® / Nomex®)E I DuPont India Pvt Limited1001-1012, Meadows, Sahar Plaza Complex, Andheri Kurla Road, J B Nagar, Andheri E Mumbai – 400059
Board : 91 22 67515000Direct : 91 22 67515134Email : [email protected]