| With around 330 participants
and experts from throughout the world, the First International
Thermoset Symposium in Iserlohn was a very successful forum for
operators, processors, and manufacturers of machines and raw materials.
The concept of the "thermoset family” was well received during the
symposium. In addition to the total of 17 practice-oriented technical
papers presented by highly qualified speakers, the conversations at the
exhibition stands during the breaks and the evening event with an
underlying supplementary program in the Parkhalle of Iserlohn
contributed to a dynamic exchange of experience. This successful
symposium could only be realized thanks to the intensive preparations
of the organization committee, composed of personnel from the
companies AICAR SA, Bakelite AG, Dugro GmbH, Iserlohner Kunststoff -
Technologie GmbH, Perstorp AB and Raschieg GmbH, and from the AVKTV and
the Märkischen Fachhochschule in Iserlohn. In fact, the planning work
was commenced a full year before the symposium was held. Prof. Dr.-Ing.
Paul Thienel greeted the participants and hosted the symposium. To kick
off the symposium, Dr. Jochen Kirchhoff, President of the NRW
Employer’s Association, spoke about the lack of qualified personnel,
experts and engineers in the plastics area. According to a survey,
three of ten companies lack the qualified per-sonnel required to realize
innovative projects. To ensure that qualified personnel will be
available in the future, Dr. Kirchhoff pointed out the
opportunities in crossdiscipline employment and in pilot projects for
unemployed and prospective engineers. The coming interest for
prospective engineers cannot be awakened early enough. "Children could
be allowed to perform experiments in grade school to ensure that they
are not too late to learn something about physics and chemistry, as is
presently the case.” Technical talks on various areas covered by the
raw material manufacturers commenced after Dr. Kirchhoff’s introductory
address, and highlighted innovative advances in the area of molding
compound development. An experiment vividly illustrating the subject of
fireproofing was performed at the speaker’s podium, demonstrating the
very good thermal behavior of thermosets compared to
thermoplastic materials. Surface finishing, particularly plating of PF
moldings, represents a further advance in the area of thermosets.
Moldings such as handles for sanitary facilities may be chrome-plated
using this method. By this means, thermoset materials can gain entrance
to additional, previously unexploited market segments. In the area of
thermoset processing, opportunities for practical persons right at the
machine to enhance process reliability and to optimize the molding
process were outlined. Drying and preheating the molding compounds can
achieve considerable improvement in the economy of thermoset
processing. Machine and raw material manufacturers have implemented a
number of options in this direction in the past. Reductions in the
cycle time of up to 33 % have been achieved. In addition
to continued development of the periphery, a number of advances in the
areas of injection molding machines and compression molding equipment
could also be outlined. Thus, a trend toward machine technology
(including embossing and vacuum units) specially adapted for use of
thermoset molding compounds is evident. Special processes such as
multicomponent injection molding using thermosets and thermoplastics
will also make it possible to realize the newest, most innovative
products in the future, with the accent on reduction of manufacturing
costs and integration of multifunctional assemblies into a single
product. The descriptions of possibilities offered by curing tests and
other test methods relevant in thermoset processing were intended to
provide the participants with an overview of information on questions
that repeatedly arise in this area. In the area of thermosets,
simulation of the mold filling operation was long impossible due to the
chemical crosslinking that occurs and the associated difficulty in
determining the viscosity. Now, reliable viscosity data may also be
determined in the area of thermosets thanks to development of a special
highpressure capillary rheometer. This type of simulation also takes
account of thermoset crosslinking. It considerably simplifies
development of the increasingly complex thermoset moldings. Many
additional advances could be described. The wide range of participants
who confirmed their attendance to the symposium organizers shows that it
has indeed been possible to assemble a "thermoset family”, and the
surprisingly large number of participants makes the interest in the
"old-fashioned” thermoset material apparent. The advances in the
thermoset area show one thing clearly: that thermosets are truly a "new
material” with a future. |