additives for improved silica tire...
TRANSCRIPT
Additives for improved silica tire performance
Dr. Thomas Brackemeyer
Head of Global Product Management Specialty Products,
Rubber Chemicals business unit, LANXESS
Shanghai, September 6, 2012
A leading supplier of premium rubber chemicals to enhance rubber properties
Applications
(selection)
Products &
brands
(selection)
Facts
Position: Among top 3
Vision: Be THE Western-based supplier
Global: World-scale and regional production facilities
Portfolio: Accelerators, antidegradants, anti reversion
agents, specialties
Brands:
Lead by innovation
Commitment
Investments
Expertise
Alliances
Customer-oriented innovation
EU tire label
LANXESS Rubber Chemicals’ recent innovations on rolling resistance are in line with tire trends
About 40 to 50% of tires are not
requirement-conform yet*
Recent announcements of grade A
tires – tremendous innovation
efforts on rolling resistance (RR)
Compounding excellence on
“Green Tire” technology is the
focus area to improve RR and wet
grip
Innovative additive solutions –
compounding flexibility for further
tire improvements
Fuel efficiency: Strong focus of tire innovations
* According to latest available studies regarding summer and winter tires
Wet grip
Noise performance
Fu
el eff
icie
ncy
LANXESS Rubber Chemicals R&D focusing on solutions for “Green Tire” compounding
Tire Labeling Legislation
Vulcuren
Silica Additive 9202
Vulcuren
Vulcuren
Vulkalink
Vulka xyz Vulka xyz Vulka xyz
China? Japan
Reduction of rolling resistance
DPG replacement (i.e. in silica tires)
Zinc free silica (tread) processing aid
Reversion resistance in passenger car UHP tire, EMT tire, truck tire
Europe
South Korea
USA?
Brazil?
Reduction of rolling resistance
2006 2014 2017 2000 2012
More to come! More to come!
More to come!
LANXESS Rubber Chemicals R&D focusing on solutions for “Green Tire” compounding
Tire Labeling Legislation
China? Japan Europe
South Korea
USA?
Brazil?
2006 2014 2017 2000 2012
Vulcuren
Silica Additive 9202
Vulcuren
Vulcuren
Vulkalink
Vulka xyz Vulka xyz Vulka xyz
Reduction of rolling resistance
DPG replacement (i.e. in silica tires)
Zinc free silica (tread) processing aid
Reversion resistance in passenger car UHP tire, EMT tire, truck tire
More to come! More to come!
More to come!
Reduction of rolling resistance
Vulcuren® – used as functional additive in a standard recipe for silica treads
Existing products Reference Innovation
Buna CB 24 30 30
Buna VSL 5025-2 96 96
Corax N 339 6.4 6.4
Vulkasil S 80 80
TDAE oil 8 8
Stearic acid 1 1
Vulkanox 4020/LG (6PPD) 1 1
Vulkanox HS/LG (TMQ) 1 1
ZnO RS 2.5 2.5
Antilux 654 (wax) 1.5 1.5
Silane Si 69 (TESPT) 6.4 6.4
DPG 2 2
Vulkacit CZ/C (CBS) 1.5 1.5
Sulfur 1.5 1.5
Vulcuren® 1
Innovative applications of existing products Innovative, new products
As a reference for
product innovations
a standard recipe for
silica tread
compounds is used
Vulcuren® – ideal vulcanization curve if used in the first non-productive mixing step
Significant reduction
in t90 time – shorter
vulcanization cycle
No marching
modulus effect –
constant tire
properties
independent from
vulcanization time
Time (s)
Reference Vulcuren®
20
15
10
5
0
25
S‘[d
Nm
]
30
0 4000 500 1000 1500 2500 3000 3500 2000
Monsanto-MDR @ 170ºC
Innovative applications of existing products Innovative, new products
Vulcuren® – direct effect on rolling resistance without changing the compound composition
Innovative applications of existing products Innovative, new products
Considerably
higher rebound
elasticity at 60ºC
provides first
indication for
improved rolling
resistance
Rebound elasticity 60ºC
Reference Vulcuren®
58
54
50
52
56
60
%
Ro
lling
Res
ista
nc
e In
dic
ato
r
Vulcuren® – direct effect on rolling resistance without changing the compound composition
Innovative applications of existing products Innovative, new products
Significant reduction
of loss factor at 60ºC
Measurement of loss
factor is good
indicator for better
rolling resistance
Slight improvement
also expected for
wet grip
Loss factor 60ºC (Eplexor)
Eplexor
-100 100 -50 0 50
0.115
0.1
0.125
0.105
Vulcuren® Reference
0.135
Ta
n d
60ºC
Reference
Temperature [ºC]
Vulcuren®
0.6
0.3
0
Ta
n d
50-60°
Ro
lling
Res
ista
nc
e In
dic
ato
r
LANXESS Rubber Chemicals R&D focusing on solutions for “Green Tire” compounding
Tire Labeling Legislation
Vulcuren
Silica Additive 9202
Vulcuren
Vulcuren
Vulkalink
Vulka xyz Vulka xyz Vulka xyz
Reduction of rolling resistance
DPG replacement (i.e. in silica tires)
Zinc free silica (tread) processing aid
Reversion Resistance in passenger car UHP tire, EMT tire, truck tire
More to come! More to come!
More to come!
Reduction of rolling resistance
China? Japan Europe
South Korea
USA?
Brazil?
2006 2014 2017 2000 2012
The product idea is based on additives which could build a reversible polymer-silica network
Innovative applications of existing products Innovative, new products
New bi-functional
additives building
– A chemical bond to
polymer via the
“S”-functionality
– Physical bond to
silica via the
polar group
Po
lym
er
H S P
Polar
group
“S” -
functionality HO
HO
HO
HO
HO
Silic
a Vulkalink™
New additive Vulkalink™ 1871 – provides additional polymer-silica interaction
Bi-functional additive
building
– A chemical bond to
polymer
– Physical bond to
silica
No mixing problems
Easy adjustment of
modification via
additive quantity
Close development
cooperation with our
global customers
Innovative applications of existing products Innovative, new products
Cx-S-S-S-S-Cx
* *n
silica
+Silane LXS additive
* *n
silicasilica
+Silane LXS additivesilane Vulkalink™
1871
Silane
Silica
EtO EtO EtO
C
C
C
Si
Sx
OH OH
Si O Si
Vulcanization
bonding to polymer
Hydrophobation
bonding to silica
Polymer
R-COOH
New additive Vulkalink™ 1871 – results in higher compound hardness
Leads to
considerably higher
hardness of
vulcanized
compounds
Same vulcanization
behavior (Monsanto-
MDR t95)
Innovative applications of existing products Innovative, new products
Hardness shore A
Monsanto-MDR t95
MDR 170ºC
68
Sh
ore
A
70
72
66
74
VulkalinkTM
1871
Reference
Se
c.
1800
1900
1700
1600
2000
VulkalinkTM
1871
Reference
New additive Vulkalink™ 1871 – enables similar loss factors even for stiffer compounds
Innovative, new product
Similar loss factor at
60ºC
Enables reduction of
silica filler without
losing any hardness
Loss factor 60ºC
(Eplexor)
0.14
0.13
0.15
Ta
n d
60ºC
0.145
0.135
VulkalinkTM
1871
Reference
MTS (Payne Effect)
G‘ [M
pa]
Strain [%]
10
6
0
0.01 100 1
4
2
8
Reference
VulkalinkTM 1871
Reversible networks
Innovative, new product
By using Vulkalink at
a decreased level of
silica, the compound
has a significantly
lower loss factor (tan
delta at 60°C) at the
same hardness
1 phr Vulkalink is a
hardness equivalent
for 10 phr silica
Potential of loss factor (60ºC) – Reduction
(Eplexor)
Silica
Si® 69
Vulkalink 1871
Ta
n d
60
ºC
0.15
0.1
0.05
0
80
6,4
0
80
6,4
1
70
5,6
1
70
6,4
1
> 20%
Ro
lling
Res
ista
nc
e In
dic
ato
r
step1
step 2
New additive Vulkalink™ 1871 – 20% reduction of loss factor for silica reduced compounds
LANXESS Rubber Chemicals – innovative rubber chemicals for “Green Mobility”
Picture/Artwork size:
Height = 13.06 cm
Width = 7.09 cm
The improvement of fuel efficiency is a
key challenge for tire manufacturers
LANXESS functional additives improve
the processing and performance of silica-
filled tire compounds
Vulcuren and Vulkalink show great
potential to reduce rolling resistance
Development of new additives for “Green
Mobility” is the main R&D focus in
LANXESS Business Unit Rubber Chemicals