CORROSION GUIDE 181108_new table content format ... - Reichhold

Introduction
DION ® resins are among the most established and best-recognized products in the corrosion-resistant resin market.
DION ® resins were originally developed for some extremely demanding applications in the chlor-alkali industry and their
success has led to diverse and highly regarded applications. These products became part of the Reichhold family of resins
in 1989 with the acquisition of the Koppers Corporation’s resin division. Reichhold is a dedicated thermosetting polymer
company offering a complete line of corrosion-resistant resin products and actively developing new resins to serve the
changing needs of the industry.
Using the DION ® Chemical Resistance Guide
The corrosion performance of DION ® resins has been demonstrated over the past 50 years through the successful use of a
variety of composite products in hundreds of different chemical environments. Practical experience has been supplemented
by the systematic evaluation of composites exposed to a large number of corrosive environments under controlled laboratory
conditions. This corrosion guide is subject to change without notice in an effort to provide the current data. Changes may affect
suggested temperature or concentration limitations.
Laboratory evaluation of corrosion resistance is performed according to ASTM C-581, using standard laminate test coupons that
are subjected to a double-sided, fully immersed exposure to temperature-controlled corrosive media. Coupons are retrieved at
intervals of 1, 3, 6, and 12 months, then tested for retained fl exural strength and modulus, barcol, hardness, changes in weight,
and swelling/ shrinkage relative to an unexposed control. These data and a visual evaluation of the laminate’s appearance and
surface condition are used to establish the suitability of resins in specifi c environments at the suggested maximum temperatures.
Experience and case histories are also duly considered.
All of the listed maximum service temperatures assume that laminates and corrosion barriers are fully cured and fabricated to
industry accepted standards. In many service conditions, occasional temperature excursions above the listed maxima may be
acceptable, depending on the nature of the corrosive environment. Consultation with a Reichhold technical representative is
then advised. A Reichhold Technical Representative may be reached via the Reichhold Corrosion Hotline at
(800) 752-0060, via email at corrosion@reichhold.com, or at www.reichhold.com/corrosion. All inquiries will be
answered within 24 hours.
When designing for exposures to hot, relatively non-aggressive vapors, such as in ducting, hoods, or stack linings, temperature
extremes above those suggested may be feasible; however, extensive testing is strongly urged whenever suggested
temperatures are exceeded. Factors such as laminate thickness, thermal conductivity, structural design performance and
the effects of condensation must be taken into account when designing composite products for extreme temperature
performance.
4