used for curing coating and heat shrinking
plastics at a customer’s facility. Workspace
dimensions of this oven measure 30” wide
x 96” deep x 24” high. A 2’ long open
belt loading zone, 8’ long insulated heat
zone with recirculated airflow and 2 ½’
long open belt unloading zone constitute
the full heat processing system. 48KW installed in Nichrome wire heating elements
provide the heat, while a 4200 CFM,
3-HP recirculating blower furnishes vertical downward airflow to the load. This
Grieve oven features 4” insulated walls, a
Type 304, 2B finish stainless steel interior,
stainless steel exterior with #4 brush finish, as well as a 24” wide, 1” x1” Type 304
stainless steel flat wire conveyor belt with
¼-HP motor drive, variable speed from
0.9 to 17. 6 ipm. A side door allows access
to the unit’s workspace. Safety and control equipment on-board No. 853 include
PVC electrical conduit, a remote control
panel, 325 CFM stainless steel powered
forced exhauster, six-point thermocouple
jack panel through the oven wall, digital
indicating temperature controller, manual
reset excess temperature controller with
separate contactors, and recirculating
blower airflow safety switch.
SiVance Unveils C1008
Silicone Curative to
Improve Epoxy Polysiloxane
Topcoats Flexibility
SiVance, LLC has developed a new silicone
curative that improves the durable flexibility of epoxy polysiloxane topcoats without
sacrificing weatherability. The development
of this curative solves a major drawback to
epoxy polysiloxanes: brittleness and cracking that develops over time as the coating
continues to cure. This new product is
called C1008 Curative and is available in
commercial quantities. The product is currently registered under TSCA and REACH,
with other global approvals in progress.
Coatings subjected to a ½ inch mandrel
bend test after aging. Sample A: Commercial
epoxy polysiloxane shows cracking and delamination after only 1 week aging. Sample
B: The same commercial epoxy polysiloxane modified with C1008 Curative passes
the bend test after aging for 1 year. C1008
Curative utilizes a proprietary structure that provides enhanced compatibility in epoxy systems. The product is fully
miscible with hydrogenated bisphenol-A
epoxy resins. Compatibilization of C1008
in other epoxy resins is possible with the
use of solvents (MEK, xylenes, etc.) or reactive diluents.
Freeman Technology
Launches New Website
Freeman Technology, a global leader in
powder characterization, has launched
a new website, providing an knowledge
base for formulation scientists, process
engineers and product developers work-
ing with powders. The new site provides
a detailed overview of the com-
plexity of powders and the chal-
lenges they present, and uses
industry specific examples to
demonstrate how powder rheology has
been used to solve processing problems.
The website uses simple, straightforward
language and introduces new videos and
animations to illustrate the fundamentals
of powder behaviour and the basic princi-
ples of powder testing. A comprehensive
library of published articles, white papers
and conference presentations provides
easy access to the expertise that Freeman
Technology has amassed over more than
14 years of working with powders, and
showcases in-house research, industrial
collaborations and unrivalled application
experience in a variety of industrial sec-
tors. Visit the website at www.freeman-
tech.co.uk to learn more about resolving
powder-related problems, to read the
latest news from Freeman Technology
or to sign up for the company newslet-
ter. Freeman Technology specialises in
providing systems for measuring the
flow properties of powders to directly
support industrial powder handling and
processing. The company’s FT4 Powder
Rheometer uses patented dynamic meth-
odology, a fully automated shear cell and
several bulk property tests to quantify
powder properties that directly correlate
with process and product performance.
This instrument has been successfully
used to develop new products and opti-
mise manufacturing processes in many
industries. These range from pharmaceu-
tical, food and powder coatings to metal
powders and ceramics. CW
