WACKER: Over 100 Years of Success...Electrically conductive ‘Liquid’ Silicone Rubber 13,04 13,04...
Transcript of WACKER: Over 100 Years of Success...Electrically conductive ‘Liquid’ Silicone Rubber 13,04 13,04...
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CREATING TOMORROW`S SOLUTIONS
WACKER:
Over 100 Years of Success
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Disclaimer
The information contained in this presentation is for background purposes only and is subject to
amendment, revision and updating. Certain statements and information contained in this presentation
may relate to future expectations and other forward-looking statements that are based on management's
current views and assumptions and involve known and unknown risks and uncertainties. In addition to
statements which are forward-looking by reason of context, including without limitation, statements
referring to risk limitations, operational profitability, financial strength, performance targets, profitable
growth opportunities, and risk adequate pricing, as well as the words “may, will, should, expects, plans,
intends, anticipates, believes, estimates, predicts, or continue”, “potential, future, or further”, and similar
expressions identify forward-looking statements. By their nature, forward-looking statements involve a
number of risks, uncertainties and assumptions which could cause actual results or events to differ
materially from those expressed or implied by the forward-looking statements. These include, among
other factors, changing business or other market conditions and the prospects for growth anticipated by
the Company's management. These and other factors could adversely affect the outcome and financial
effects of the plans and events described herein. Statements contained in this presentation regarding
past trends or activities should not be taken as a representation that such trends or activities will
continue in the future. The Company does not undertake any obligation to update or revise any
statements contained in this presentation, whether as a result of new information, future events or
otherwise. In particular, you should not place undue reliance on forward-looking statements, which
speak only as of the date of this presentation.
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WACKER:
A Well-Balanced Portfolio
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WACKER:
Highly-Integrated Operations Based on Five Key Raw Materials
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WACKER:
Products and Solutions for Key Global Industries
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WACKER:
Our R&D Pipeline Covers a Diverse Range of Applications
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CREATING TOMORROW`S SOLUTIONS
Introduction to Liquid Silicone Rubber (LSR)
Fundamentals & General properties
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Agenda
Silicones and Silicone elastomers
Liquid silicone rubber
Processing of LSR
Properties
LSR Product portfolio
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What are Silicones?
Quartz Silicon metal Silane Polydimethylsiloxane
R
R RR
Si
R R
Si
R
R
R
R
R R
Si SiSiO O O
Generic name for a class of synthetic polymers with Si-O links made from
silicon metal
3-dimensionally crosslinked polysiloxane polymers (network-like structure)
Elastomeric, rubber-like polymers with a combination of very unique properties
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Your Day Starts with Silicones…
HDK® BELSIL®
ELASTOSIL®
WACKER® TS
WETSOFT®
SILFOAM®
WACKER® FC
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Agenda
Silicones and Silicone elastomers
Liquid silicone rubber
Processing of LSR
Properties
LSR Product portfolio
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Polymer and silica are similar
Essential Raw Materials of Silicone Elastomers
Structural similarity of silicone polymer and silica filler
(Si-O) and low particle size of primary particles
translucent
R R
Si
R
R
R
R
R R
Si SiSiO O O
SiO2
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Agenda
Silicones and Silicone elastomers
Liquid silicone rubber
Processing of LSR
Properties
LSR Product portfolio
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Liquid Silicone Rubber
Processing of ELASTOSIL® LR
Processing advantages
Fully automated processing
Mold with up to 128 cavities
Short cycle times
(3 - 5 seconds per 1 mm of thickness)
No waste in cold runner technology (since 1990)
No mechanical finishing necessary
Realization of complex geometries (thin wall thickness with long flow distance,
demolding of undercuts)
Combination of hard and soft materials
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Agenda
Silicones and Silicone elastomers
Liquid silicone rubber
Processing of LSR
Properties
LSR Product portfolio
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Chemical properties
Very good weathering, UV and ageing resistance
Good media resistance against a variety of solvents and chemicals
Sterilization resistance for single and multiple use
Chemical and Physical Properties of Silicone Elastomers
Physical properties
Thermal stability up to 180 °C, with heat stabilizers up to 300 °C
Low temperature flexibility down to -50 °C (Tg = -125 °C)
Low compression set and permanent sealing
Hydrophobicity, low surface tension
High transparency or Pigmentable in nearly every color
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Regulatory Compliances Revelant with Silicone Elastomers
Pharmaceutical applications
European Pharmacopoeia 3.1.9
‘Silicone elastomers for closures
and tubing’
Others
Free of phthalates and other organic
softeners (EU directive 2007/19/EC)
Free of nitrosamines
(EU directive 93/11/EEC)
Free of latex and plant proteins, animal-
derived products, organic stabilizers
Food contact
FDA CFR 21 § 177.2600
“Rubber articles intended for
repeated use”
BfR XV. Silicone, section III.
Silicone elastomers
Biocompatibility
United States Pharmacopoeia
“Biological reactivity tests,
In vivo”, Class VI
ISO 10993 “Biological Evaluation
of Medical devices”
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Agenda
Silicones and Silicone elastomers
Liquid silicone rubber
Processing of LSR
Properties
LSR Product portfolio
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WACKER's LSR Portfolio includes more than 200 products in the
hardness range of 3 - 90 Shore A
General purpose
High tear
Media resistant
Flame retardant
Heat resistant
Oil bleeding
Low friction
Low comp. set
Steam resistant
High damping
Crystal clear
Self-adhesive
Electrically conductive
‘Liquid’ Silicone Rubber
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ELASTOSIL® AUX color pastes FL
are bringing color and improved thermal resistance
ELASTOSIL® COLOR PASTES FL that can be used as heat stabilizers
1014
3013
9005
2001
IVORY 1014
RED-BROWN 2001
RED IRON OXIDE 3013
DEEP BLACK 9005
BLACK 9005 F
Recommendation for long-term applications
in hot air at T > 160 °C
Typical dosing 2 %
Improvement of compression set
9005 F
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CREATING TOMORROW`S SOLUTIONS
Liquid Silicone Rubber (LSR)
Self-adhesive LSR to realize Hard-soft Composites
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Preamble
Multi-component parts have become increasingly important in recent years.
Whether it is in the automotive, sanitary, medical or domestic sectors,
composite systems are standing for innovative products and economically
efficient production.
Multi-component injection molding and In-mold assembly are opening up new
horizons for the processing of materials.
Processes like “Sequential molding, Overmolding, Co-Injection (Sandwich
molding), In-mold fitting of seal and gaskets, Component manufacturing,……”
broaden the possible scope for creative design and versatility of function and
application.
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Current technologies
Current Hard-soft Composites technologies
Drawbacks of technologies
Ambitious design
Not suitable for complex geometries
Additional processing steps
Solvents included
Expensive equipment
Time-limited activation of the surface
Primer
Surface treatment
Undercuts
SiliconeSubstrate
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Why Success story of Self-adhesive LSR is moving forward … ?
New trends and opportunities with
Hard-soft Composites
Downsizing requires
Weight reduction
Material saving
One part reducing assembly steps
Integrating new functionalities (Sealing, insulating & shielding)
Opening new design conception and
geometries (long flow distance, demolding of undercuts)
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npc low C.S. = Non post-cured low compression set
ELASTOSIL® LR 3x7y product portfolio
Product overview Self-adhesive grades
ELASTOSIL® Hardness Properties Applications
LR 3070 10-60Technical grades for
adhesion on PBT, PAGaskets, multi-functional seals
LR 3071 30-60Food contact
(FDA, BfR, KTW)Aerators, shower heads
LR 3072 30-50 Oil bleeding Radial seals
LR 3074 60 Coolant resistant Radiator seals
LR 3076 50+70 Oil resistant Automotive gaskets
LR 3170 40Flame retardant
(UL V-0)Flame resistant gaskets
SILPURAN®
670040-60
Medical grades for
adhesion on PBT, PA,
ISO 10993, USP class
VI, biocompatible
Sleep apnea mask
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Direct bonding
Self-adhesion is the most efficient technique for the production
of two component parts
Benefits self-adhesion technology
Adhesion to silicone elastomers,
plastics, metals and glass
No undercuts, no primer needed
No solvents
Join and seal in one step
Suitable for various designs
One-step process (adhesion during
cure)
High degree of automation, no
assembly
(2K injection molding)
Silicone
Substrate
Bonding agent
Silicone
Substrate
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Processing of adhesion occurs by chemistry
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Adhesion promotors react at the surface to create new
molecules
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Self-adhesive LSR grades of WACKER know a lot of suitable
bonding partners
PEEK
LCP
PEI PES (PPS)
PC PET PBT
PMMA ABS PA POM
PS PP
SAN PVC PE-HD PE-LD
good adhesion
no “direct bonding”
Engineering plastics
Commodities
High performance plastics
Self-adhesive technology
invented by WACKER
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Two-component injection molding Adhesion test according to
DIN ISO 813
Substrate
Silicone rubber
Cohesive
failure (R)
Adhesive
failure (D)
Adhesion performance of Self-adhesive LSR
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Substrate General Adhesion
performance
Substrate General Adhesion
performance
PA 6 +++ PES ---
PA 6.6 +++ PEI ---
PA 12 ++ PE / PP ---
PA 6.12 + PPE ++
PBT +++ PPS -
PET +++ PSU ---
PC --- VMQ ++
PEEK ++ PMMA ---
Adhesion performance strongly depends on the chemical nature
of the substrates and surface functionality
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Requirements for reliable 2 component part
High melting point of substrate in case of
thermoplastics
Compatibility of silicone rubber and
thermoplastic, i.e. no inhibition of LSR
(platinum poisons)
Clean glass and metal surfaces
wacker
BOND
The selection of a suitable Bonding Partner at the Beginning of a
project is very important
Link to self-adhesive LSR homepage and bonding data base
http://www.wacker.com/cms/en/products-markets/self-adhesive-lsr/lsr/lsr-login.jsp
http://www.wacker.com/cms/en/products-markets/self-adhesive-lsr/lsr/lsr-login.jsp
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LR 3003/40 to
MAKROLON® 2405
LR 3070/40 to
MAKROLON® 2405
LR 3071/40 to
MAKROLON® 2405
Adhesion to Polycarbonate of ELASTOSIL® LR 3070 and LR 3071
can be achieved by use of specific pre-treatment methods
0
2
4
6
8
10
12
w/o Pyrosil Plasma
0
2
4
6
8
10
12
w/o Pyrosil Plasma
0
2
4
6
8
10
12
w/o Pyrosil Plasma
Peeling force / N/mmPeeling force / N/mmPeeling force / N/mm
PC: 4 h @ 100 °C
NPC
no adhesion no adhesion no adhesion
Adhesion test as per DIN ISO 813:
D = Adhesive failure
R = Cohesive failure
R R
R
RD RD
R
R RD
D
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Self-adhesive ELASTOSIL® LR
Applications with Self-adhesive LSR grades
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Upper image: courtesy of Rosenberger Hochfrequenztechnik GmbH & Co. KG
Hybrid, Electric and Fuel Cell Vehicles Require Challenging
High Voltage System Component Solutions
ELASTOSIL® Grades of Choice LR 384x (oil bleeding)
LR 3065 (low COF)
LR 3070 (self-adhesive)
HV Connecting and Contact Systems System Requirements
High voltage electrical insulation
Very reliable sealing performance
Heat resistance & low temp. flexibility
Shielded cables and connectors
→ LSR processing advantages
→ Silicone elastomers for long
operating lifetime
High voltage
singe wire seals
Self-adhesive LSR:
Adhesion ensures
reliable sealing
performance
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Useful link at hptt/….
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Thank You for Your Attention.
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Back-up
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* Special PBT for sanitary applications, Adhesion test as per DIN ISO 813, D = Adhesive failure , R = Cohesive failure
ELASTOSIL® LR 3271/45 is the material of choice for ambitious
2-component soft-hard Sanitary Solutions
ELASTOSIL® LR 3271/45
for sanitary applications
Shower heads
Jet regulator, aerator
Static and dynamic
gaskets
Product benefits
Excellent initial
bonding performance
to Polyesters during
Injection Molding
Improved hot water
hydrolysis
resistance of the
adhesion layer
BfR, FDA approved
Suitable for drinking
water apps acc. to
KTW, W 270
LR 3271/45
(PC: 4 h, 100 °C)
0
2
4
6
8
10
12
14
Start 3 d 5 d
Peeling force / N/mm*
R RR
Stable adhesion
performance
in water at 70 °C
New Product
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* Acc. ISO 815-1 type B method A, non post cured
ELASTOSIL® LR 3072/50 Completes WACKER’s Portfolio of
Self-Adhesive and Oil Bleeding LSR Solutions
Benefits of LR 3072/50
Soft-hard combination
of LSR and PA, PBT
Reduced COF
due to oil film formation
Low compression set
for excellent sealing
10 %* after 22 h / 125 °C
Application
Single wire seals in addition
to connector seals
Oil bleeding
Self bonding
New Product
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*Class 8 – acc. DIN EN ISO 14644
Product Benefits
Food Product of Choice
‘ELASTOSIL® LR 3671/40’
BfR, FDA approved
Easier opening of
thermos flasks
Medical Product of Choice
SILPURAN® 6760/50
Fine filtering (50 µm) /
packaging into clean room*
USP class VI, ISO 10993
Self bonding Low coefficient of friction
Self-Adhesion Technology Can Be Combined with WACKER’s
Low Coefficient of Friction (COF) Technology
Under Development New Product