Silicone Elastomers 2009 : third international Conference, 7-8 October 2009, Hamburg, Germany : conference proceedings

232 Pages·19.925 MB·English

by  iSmithers Rapra

Smithers Rapra has provided a world leading portfolio of Rubber, Plastic and other
Polymer Information products and services for 85 years. To improve the delivery and
range of products a new business was formed in July 2008 called iSmithers. 2009
iSmithers, working alongside Smithers Rapra and still part of the Smithers group, has
Third International Conference
expanded its service offering to cover other business areas and industries harnessing
the expertise of the iSmithers management team and the knowledge from other
companies within the group. 7-8 October 2009
Please visit our webside for more information:
Hamburg, Germany
www.polymerconferences.com
Conference Proceedings
C
o
n
f
e
r
e
n
c
e

P
r
o
c
e
e
d
i
n
g
s
iS organised by:
m
it www.polymerconferences.com
h
©iSmithers 2009 e
r
ISBN 978 1 84735 395 5 s
Organised by

Hamburg, Germany
7-8 October 2009
ISBN: 978-1-84735-395-5
© Smithers Rapra Technology Ltd, 2009
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted
in any form by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written
permission of the publisher, Smithers Rapra Technology Ltd, Shawbury, Shrewsbury, Shropshire, SY4 4NR,
UK.

The views expressed in this publication are those of the individual authors and do not necessarily correspond
to those of Smithers Rapra Technology Ltd. This publication is published on the basis that no responsibility or
liability of any nature shall attach to Smithers Rapra Technology Ltd. arising out of or in connection with any
utilization in any form any material contained in this publication.
7-8 October 2009
Marriott Hotel, Hamburg, Germany

Contents

Session 1: Market trends for silicone elastomers

Paper 1 Silicone elastomers – solutions for the future
Dr Hans Peter Wolf, Fabien Virlogeux & E Gerlach, Dow Corning GmbH, Germany

Session 2: Silicone elastomer materials

Paper 2 Fluoro technologies created new dimensions for liquid silicone rubber
Fabien Virlogeux, H P Wolf & E Gerlach, Dow Corning GmbH, Germany

Paper 3 Silicone elastomers – clear as glass
Dip –Ing Oliver Franssen & H Bayerl, Momentive Performance Materials GmbH, Germany

Paper 4 Formulation of two-part elastomer systems: From theory to practice
Delphine Blanc & Caroline Moine, Bluestar Silicones, France

Paper 5 Contribution of soft segment entanglements on thermomechanical properties
of silicone-urea copolymers
Iskender Yiglor, T Eynur, M Bakan & E Yilgor, Koc University, Turkey

Paper 6 Mechanical and thermal properties of epoxy silicone blends synthesized in
supercriticial carbon dioxide
M G H Zaidi, A Tiwari, T Agarwal, V Kumar, P L Sah, G B Pant University, India & S
Alam, Defense Material Stores Research & Development Establishment, India

Session 3: Applications for silicone elastomers

Paper 7 Advances in silicone elastomers for healthcare applications
Burkhard Ledig, Momentive Performance Materials GmbH, Germany

Paper 8 Silicone elastomers in medical applications: Recent developments
Dr Andre Colas & X Thomas, Dow Corning SA, Belgium

Session 4: Testing silicone elastomers

Paper 9 Determination of the overall migration from silicone elastomers into simulants
and foodstuffs using H-NMR techniques
Prof Dr Thomas Simat, Dresden University of Technology, Germany & R Helling, Saxon
Institute for Public and Veterinary Health, Germany

Paper 10 Claim and benefit –based approaches for assessing the antimicrobial performance
for silicone elastomer formulations
Peter D Askew, Industrial Microbiological Services Ltd (IMSL), UK
Session 5: Additives for silicone elastomers

Paper 11 Microbial biofilm inhibitor for silicone elastomers
Svoboda Tabakova & V Mircheva, Bulgarian Academy of Sciences, Bulgaria

Session 6: Fillers for silicone elastomers

Paper 12 Silicones and carbon nanotubes – from antistatic to fire barrier and fouling
release coatings
Dr Michel Mahy, Nanocyl SA, Belgium

Paper 13 Fumed silica – more than just a powder
Mario Scholz, Evonik Degussa GmbH, Germany

Paper 14 Fillers for silicone elastomers – non-silica alternatives
i V Dr Thomas Doege, Quarzwerke GmbH, Germany

+++ Paper unavailable at time of print +++

Paper 15 Collapse resistant extrusions and further benefits with Neuburg Siliceous Earth in
peroxide cured high consistency silicone rubber
Hubert Oggermüller, Nicole Westhaus, Rainer Lüttich, Hoffmann Mineral GmbH & Co KG,
Germany

Session 7: Processing silicone elastomers

Paper 16 Recent advances in bonding agents for silicone elastomers
Albert Achen, LORD Germany GmbH, Germany & Patrick Warren, LORD Corporation,
USA

Paper 17 Recent advances in silicone mixing and extrusion processing
Dr Ubaldo Colombo, Colmec SpA, Italy

Paper 18 Fine mesh straining and extrusion applications with gear pump systems for
silicone elastomers
Winfried Trost & H Hain, Uth GmbH, Germany

Paper 19 Elastomer multi component moulding
Ing Leopol Praher, Engel Austria GmbH, Austria

Paper 20 LSR tooling at its best, what are the main factors for efficient and economic
production?
Kurt Manigatter, Elmet GmbH, Austria
7-8 October 2009 – Hamburg, Germany SILICONE ELASTOMERS 2009
SILICONE ELASTOMERS – SOLUTIONS FOR THE FUTURE

Dr. Hans Peter Wolf & Dr. E Gerlach,
Dow Corning GmbH
Rheingaustrasse 34, 65201 Wiesbaden, Germany
Tel: [phone] Fax: [phone] email: [email protected]

BIOGRAPHICAL NOTE

Dr. Hans Peter Wolf
Education:
1978-1984 Study of Chemistry at University Frankfurt and work on
„Gasphase reactions“ on Raney Nickel
1984 Diplom in Inorganic Chemistry
1984-1988 Phd examination and work on „Reactions of organic
compounds on Raney Nickel and with shock cooled zinc“
1988 Phd in inorganic Chemistry

Career:
Nov 1988 Start at Dow Corning
1988-1989 Research team post doctoral University of Frankfurt - direct syntheses of phenychloro
silanes
1990-1992 TS&D chemist for high tech industry Europe
1992-1994 Upgrade Engineer for textile industry (flowable acetoxy) and rubber industry (LSR)
1995-1996 Leader elastomer production Wiesbaden
1997-1998 LSR TS&D team leader Europe
1999-2004 Manager AETS RFI Europe
2005 Manager AETS SiRu&TP EEI Europe
2006-2007 Manager AETS SiRu EEI Europe
2008 Rubber S&T Manager Europe
2009- Global Rubber S+T Development Manager

ABSTRACT

The paper describes some prognoses of development of mankind in the next 40 years, some consequences
of the prognoses and where silicone elastomers can contribute to avoid shortfalls and environmental
problems. It shows some examples of developments using silicone rubber in transportation, energy
generation and distribution, water distribution and medical application.

Page 1 of 12 pages Paper 1
SILICONE ELASTOMERS 2009 7-8 October 2009 – Hamburg, Germany
I. Megatrends that determine our future

The world population will grow. Whilst the world population was 2 billion people in 1930, there will be 8 billion
people in 2025 – 8 billion people who want to eat, who need energy, who will produce and buy goods, who
will travel.

The high growth of population will have an impact in numerous areas: The globalization of the economy will
continue. Agricultural production will increase, expanding into areas with low amount of water. Goods will be
produced in areas far away from where goods are used. Transportation of goods, and transportation of
people will be a consequence of population growth. More energy is needed for growing production. As the
share of population living in large cities will increase significantly, there will be new challenges for the traffic.

The volume of goods transportation will increase significantly.

Estimated freight volume inside

Source: J.Rich; C.O.Hansen Freight Vision 2009

In addition increased mobility of people will require additional mass transportation and individual
transportation. More natural resources will be used and generate more CO2 that will influence the climate.
Paper 1 Page 2 of 12 pages
7-8 October 2009 – Hamburg, Germany SILICONE ELASTOMERS 2009

Source: Sigurd Weinreich: Nachhaltige Entwicklung im Personenverkehr ISBN 978-3-7908-0150

Energy generation and traffic will be the most important contributors to carbon dioxide generation, which will
have an impact on the global temperature increase.

Global temperature increase will generate the need of more water for agricultural use.

The challenge for the future is to meet upcoming needs that result from the global megatrends described
above. Work towards sustainability is needed. We have chosen 4 application areas to describe how silicone
rubber can contribute to meet sustainability goals and to describe where future development of our materials
are directed to.

Page 3 of 12 pages Paper 1
SILICONE ELASTOMERS 2009 7-8 October 2009 – Hamburg, Germany
II. Innovation in transportation

II a. Lower CO2 output

By improving of the efficiency of combustion it is possible to better utilize the fuel and thus reducing carbon-
dioxide emission. This happens by increasing the pressure on the side of fuel intake. Increased
temperatures, higher pressure and increasing residues of oil require improved material combinations with
long-term temperature resistance of 200 to 250°C with improved bonding.

Paper 1 Page 4 of 12 pages
7-8 October 2009 – Hamburg, Germany SILICONE ELASTOMERS 2009
II b. Emission Reduction

Optimum control of gasoline/air ratio dependent from the number of revolution requires improved fuel
management. Constant elastic properties at minus temperatures as well as at permanent engine service
conditions require improved materials with good fuel resistance.

New fuel resistant Fluoro-LSRs provide the desired end product properties, granting at the same time
economic production of large series of control membranes or seals for the fuel system, including resistivity to
new, alternative fuels like bio-ethanol or rape seed esters.

II c. Improved comfort by noise and vibration reduction

In modern cars numerous damping parts have the task to improve the comfort of the passengers by avoiding
or eliminating noise and vibrations. Particularly in near the exhaust system, temperature requirements get
very high, so that temperature resistant elastomers with defined dynamic properties are required.

The optimum balance between elastic and viscous properties allows the design of elements to prevent or
eliminate vibration.
Page 5 of 12 pages Paper 1