momentive’s high clarity silicone (lsr) for ... industry leadership through 70 years of silicone...
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MOMENTIVE’S HIGH CLARITY SILICONE (LSR) FOR LIGHTING AND TRANSPARENT APPLICATIONS Plastics Conference 2016 - Injecting Innovation, Hong Kong, 4 November 2016 H. S. Hwang, Senior Global Project Manager, Marketing Momentive Performance Materials
November 4th, 2016
Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
SILICONE ELASTOMERS – CLEAR AS GLASS
SILOPREN* ULTRA CLEAR LSR 7000 SERIES FOR LIGHTING AND TRANSPARENT APPLICATIONS
Industry Leader
TRANSFORMATIONAL COMBINATION FORGES AN INDUSTRY LEADER
GE Bayer Silicones
85 technology centers
10,000 associates
11,000 customers
Global Capability
Momentive Performance Materials
4
Industry Leadership through 70 Years of Silicone Innovation
First “direct process”
for making
methylchlorosilanes
1930s
First silane coupling
agents for fiberglass
and composites
1950s
First non-
hydrolyzable silicone
surfactant for
polyurethane foams
1962
First construction
sealant that hardens
at room
temperature
1964
First man walks on
moon in silicone
bootsoles enabled
by GE Silicones
1969
First true structural
silicone glazing for
architectural
applications
1974
First commercialized
silicone for 2-in-1
shampoo and
conditioner
1986
First silicone
polyethers
introduced for textile
treatment, laundry
softeners and
personal care
1996
First successful one-
part addition cure
technology for
adhesives and
pharmaceutical
tubing
2001
First introduction of
NXT* sulfur silane for
next generation
automobile tires
2004
First use of Silwet*
hydrolytically stable
super-spreader
silicones for in-can
pesticides
2008
75 Years of Silicone Innovation
*NXT and Silwet are trademarks of Momentive Performance Materials Inc.
Momentive – Silicone leader with 75 years!
Lighting is one of the key-technologies of the 21st century
5 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Materials for Optics
Critical to function – a wish list
Innovations in lighting applications need new materials, the ideal candidate should provide:
High Transparency over a wide range of wavelengths
Homogenous optical properties, no birefringence
High micro crack resistance
Design freedom
Temperature resistance from -40°C up to > 150°C
High resistance against rapid climatic changes
High resistance against Ozon and strong UV-light
Low chromatic aberration
Low thermo-optical coefficient
High precision molding of microstructured surfaces
High efficient and automated Injection Molding Process
Cost efficiency
Milestones
- 2009: Introduction and Life Demo LSR7070 during plastics fair Fakuma in Germany
- Conferences
- Customer projects
- Industry projects
- 2014: First applications and break through
in industrial (Street-) and automotive (Headlamp-) Lighting
Driven by Performance – Pushed by Innovations in Lighting
6 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
A new material for the Lighting Industry
KIMW Industry
project, 2010
Fakuma 2009
Conference Papers
Khatod product
release 2014
- LSR is not a plastic and not glass
- Parts out of LSR are flexible
- LSR is a thermosetting material
- LSR is a 2-Component “fluid” and is molded according to the LSR Injection Molding Process
meets
7 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
A new understanding of material and function
World of plastics and glass
Learn about LSR
World of silicones
Learn about optics
- Optics do not require dampening, decoupling or sealing properties
- Optics need defined and precise surfaces
- Optics need transparency
8
Innovations & Market “Firsts” High clarity Liquid Silicone Rubber (LSR)
A new material for the Lighting Industry
Technology & Market Leadership in Moldable Optics Since 2008
R – Si - O – Si - O – Si - R
R
R
R
R R
R n
9
What is Silicone?
The basic structure of Silicones – the key to performance
Poly-Di-Methyl-Siloxan n = 100 – 1000 => LSR n = 2000 – 12000 => HCR
Bonding Energy
Si -- O= 451 kJ/mol
C -- C = 352 kJ/mol
R = - CH3
= - CH=CH2
= -CH2-CH2-CF3
= -
Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Basic Properties:
- Excellent resistance against very low
and against very high temperatures
- Excellent resistance against UV-Light
- Excellent resistance against ozon
10 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
A different point of view
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Mechanical properties of Silopren* in comparison, typical values
High transparency over a broad range of wave length
11 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
Material properties
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Isotropic optical properties - no birefringence
12 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
Material properties
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Excellent resistance against high temperatures
Examples after storage 6480h @150°C
13 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
Material properties
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Excellent wheathering resistance, no micro cracks
14 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
Material properties
2810 KJ is approximately 1 yr FL exposure at 45 deg facing south 2810 KJ is approximately 0.8 yr AZ exposure at 45 deg facing south
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Principles of LSR injection molding vs. injection molding of thermoplastics
15
High clarity Liquid Silicone Rubber (LSR)
A different point of view – LSR Molding Technology
LSR (liquid silicone rubber)
injection molding
ETP (engineering thermoplastic material)
injection molding
2 component pumping system - hopper
feeding screw - 3 zone compression screw
cooling bands - heating bands
cold runner needle valve nozzle - open gate to hot runner needle valve nozzle
heated tool with vacuum - cooled tool with air venting
tool with highest precision (5µm) - tool with high precision
forced demolding is possible
(with undercuts) -
tool with core technology
for special part design
Hot Area Cool Area
LSR INJECTION MOLDING = ETP INJECTION MOLDING
Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Fully Automated LSR Injection Molding Processing
16
LSR is a 2-Component, platinum catalyzed system characterized by A very low viscosity Fast curing poly-addition curing Providing Fast curing Easy flow and low injection pressure Long flow path Easy filling of most complex mold cavities Enabling Multiple cavity molds Intricate designs Close- tolerance parts Short cycle time Fully automated injection processing without sprue or distribution losses (cold runner technology) Easy and flexible coloring of parts, also small bulks Flash-free processing, no secondary operations Clean operation
Screw
A B Jacket
Stationary
Platen
Moveable
Platen
Hot
Mold
P
Mixing Block
Static Mixer
Pla
tinu
m
Cro
ss
link
er
3rd S
trea
m
Cold
Barrel
LSR is easy to process and can create technical & commercial benefits!
Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
High clarity Liquid Silicone Rubber (LSR)
Injection molding process overview
LSR molding – high precision and efficency
17 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
LSR Molding Technology
PMMA VMQ
POQ64 LSR 7080J
Temperatur 2 [°C] 230 25
Temperatur 1 [°C] 90 140
Differenz [K] -140 115
CTE * 106 65 265
Startvolumen 100% 91%
Endvolumen 97% 100%
LSR is expanding in the cavity during molding - Homogenous internal pressure
- 100% filling without holding pressure
- No sinking marks
- Precise shaping of micro structered surfaces
- Easy filling of thick sections through thin sections
- Direct gating through thin gates
200 mm
Typical product data values are averages and should not be used as specifications.
*Silopren is a trademark of Momentive Performance Materials Inc
Picture: IKV
• Low fresnel losses
• High transparency over wide range of wavelength
=> high light output
• High temperature resistance
• Excellent resistance against UV-light
• Micro crack resistance
=> function under harsh conditions and in direct contact with high power LEDs
• Low bifringence
• Flexibility
• LSR molding technology
• Broad range of hardnesses
=> Design freedom
=> Integration of function
=> Diffractive optics
Silicones provide and enable…
18 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
High clarity Liquid Silicone Rubber (LSR)
Functions
Picture: Arburg
Picture: KIMW
Picture: IKV
Picture: Khatod
Picture: KOSTAL
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19 Copyright © 2016 Momentive Performance Materials Inc. All rights reserved. CONFIDENTIAL
Hwang, Heeseok (HS) Senior Global Project Manager Marketing Elastomers
Momentive Performance Materials 8F, 9F Daeryung Post Tower 6cha, 298 Beotkkot-ro, Geumcheon-gu Seoul 08510, Korea +82 2 6201 4615 +82 2 6201 4601 F +82 10 3728 1851 M Hee-Seok.Hwang@momentive.com
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