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Bridgestone AmericasApplication of Recovered CB in Support of a Circular Economy
ITEC In Focus Sept. 25-26 2019
Jamie McNutt – Technical Fellow, Bridgestone Americas Technical Center
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Bridgestone’s Global CSR Commitment
EnhancingMobility
Smarter, safer, more accessible
SupportingPeople and CommunitiesBe supportive, approachable,comfortable
AdvancingEnvironmentalStewardshipBe responsible
Priority Areas
Compliance/Fair Competition, Business Continuity(BCP)/Risk Management, Human Rights/Labor Practices,Safety/Industrial Hygiene, Procurement, Quality and Customer Value
Management Fundamentals
Serving Society with Superior Quality
Mission
Understanding that Serving Society with Superior Quality is our heritage and our mission, and embracing our responsibility to future generations as a global leader in our industries, Bridgestone and its teammates around the world employ innovation and technology to improve the way people move, live, work and play.”
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Bridgestone Environmental Mission and Long-Term Vision
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Bridgestone’s Global Environmental ProgressCO
2RRC
WAS
TEW
ATER
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Bridgestone Supports a Circular EconomyHistory
Process
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Delta-Energy Process for Recovered CB - CO2 Savings
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Delta-Energy Quality
• Delta-Energy Group achieved ISO 9001:2015 certification
• At the end of 2019 will be capable of processing rubber from ~3 Million tires annually
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D-E Black® Product
• D-E Black® is recovered with less impact to surface area and structure
• Since the Carbon Black is recovered from used tires, it is a blend of sizes in the semi-reinforcing region of the usage chart
• Many applications in case compounds are possible
N326
D-E Black ®
Char
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Application of D-E Black® in Consumer Innerliner
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Tensile Strength Elongation at Break Fatigue to Failure Cold DynamicModulus
Permeability(cm^2/day)
Inde
x to
70
phr N
660
Consumer Innerliner
5 phr D-E 10 phr D-E 15 phr D-E 20 phr D-E 30 phr D-E
Loading study with D-E in place of N660
D-E shows excellent retention of strength characteristics
D-E improves Cold Dynamic Modulus
D-E has equivalent air retention even up to 30 phr substitution (42.9%)
Control = 100
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Application of D-E Black® in AG Innerliner
Loading study with D-E in place of N660
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20
40
60
80
100
120
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Tensile Strength Elongation at Break Fatigue to Failure Cold DynamicModulus
Permeability(cm^2/day)
Inde
x to
40
phr N
660
Commercial Innerliner
5 phr D-E 10 phr D-E 15 phr D-E 20 phr D-E 30 phr D-E
D-E shows excellent retention of strength characteristics up to 37.5% replacement
D-E has good fatigue, cold modulus, and air retention up to a 50% substitution
Control = 100
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Application of D-E Black® in Consumer Sidewall
D-E shows excellent retention of strength characteristics
D-E is slightly less reinforcing than N550 which can be easily addressed with an improved CB balance
D-E has excellent dynamic ozone retention, above 25% replacement of N550
Control D-E rCB 5, 10, 15 phr Ground Rubber 5, 10, 15 phr
Loading study comparing D-E to Ground Rubber in Place of N550
Dynamic Ozone
Physical Properties
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Tensile Strength Elongation at Break Tear Dynamic Modulus Dynamic Hysteresis
Inde
x to
55
phr N
550
Consumer Sidewall
5 phr D-E 10 phr D-E 15 phr D-E 5 phr GR 10 phr GR 15 phr GR
Control = 100
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Conclusions D-E Black®
The D-E Black® is a viable partial substitute for virgin carbon black in the compounds that use semi-reinforcing carbon black grades
The material has minimal impact to properties and performance and can be applied to have equivalent tire performance with no or little tuning required
Based on the properties of the black and the compounds, Bridgestone plans to continue to expand the use of D-E Black®
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Conclusions Bridgestone
Bridgestone is committed to help ensure a healthy environment for current and future generations
Around the world, the Bridgestone Group is working to conserve natural resources through operational improvements and product design
Bridgestone is working to advance an environmentally sustainable society and support a circular economy
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