additives for improved silica tire...

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?


2006 2014 2017 2000 2012

More to come! More to come!

More to come!



China? Japan Europe

South Korea

USA?

Brazil?

2006 2014 2017 2000 2012

Vulcuren


Vulcuren

Vulcuren

Vulkalink





Reversion resistance in passenger car UHP tire, EMT tire, truck tire


More to come!


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


Vulcuren® – direct effect on rolling resistance without changing the compound composition


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


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



Vulcuren


Vulcuren

Vulcuren

Vulkalink





Reversion Resistance in passenger car UHP tire, EMT tire, truck tire


More to come!


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


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


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)


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

additives for improved silica tire...

Documents