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ISOSTATIC
MOLDING
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Isostatic
molding of PTFE and TFM provides a premium quality material
and opens up the possibility of producing complex shapes,
some of which may not be machinable. We use isostatic
molding on a production basis for components that require
minimal finishing or as a final step of production. The
isostatic molding process provides excellent finishes,
close tolerances, improved density while typically at
a reduced cost since avoiding resin waste common in machined
components.
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Encapsulation
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ENCAPSULATION
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Total
encapsulation without seals or joints is used wherever
total mechanical protection or electrical insulation is
essential. Encapsulated devices are used throughout the
chemical industry and for valves, pumps, agitators, sensors,
activators and so on. Total encapsulation opens up a new
world for design and application possibilities often with
dramatic improvements in performance and cost savings.
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Fusion Bonding
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FUSION
BOND
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In
general, fusion processes whereby PTFE/TFM parts are joined
by fusion and used whenever other manufacturing methods
are unsuccessful, easily reproducible or the volume does
not warrant injecting molding. Fusion technology has been
successfully used since the availability of TFM resin.
A
component is made in TFM/PTFE; two or more of these components
are then held in a jig capable of exerting considerable
pressure on the fusion area, which is then heated to about
360° C for a predetermined period.
Parts
fused in this manner have mechanical strength comparable
to un-fused material and if carried out with skill, the
fused areas are undetectable.
Fusion
can be carried out with various polymer combinations,
PTFE/TFM, TFM/TFM, PTFE/PFA, although conditions will
vary and will be controlled by geometry and material types.
Note: Fusion Bonding does not work on PTFE to PTFE components.
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Lamination
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LAMINATION
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Laminates
are easily produced using PTFE and TFM powders: the process
involves preparing a first layer of one form of powder,
a second layer of powder is placed on top of the first
and this is then converted into a pre-form in the usual
way. It is thus possible to form laminates of various
grades of PTFE and TFM and also to use powders incorporation
fillers such a glass, fiber or carbon. Note that it is
not possible to produce laminates by pressing or sintering
together previously formed moldings of PTFE.
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Imprinted
Color Logos
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Mastco
can provide product brand recognition to your PTFE components
by imprinting specific products or company logos with matching
color(s). Imprints may be a single letter, word or a design
that is either recessed or flush with the surrounding surface.
There is also an option to have characters and logos raised
above the surface. The extent of such imprints is dependent
on complexity of design, purity requirements and some prototyping
to insure the edge and color definition is the required match.
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IMPRINTED
LOGO
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PTFE
is the outstanding high performance
engineering fluoropolymer with an incomparable
profile of unique properties
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TEMPERATURE
PROBE
Preview,
download or order
Mastco's New PTFE capibilities
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-
Chemical
Resistance - PTFE is almost totally inert
chemically
and can be used in the most corrosive environments
yet will not contaminate the most sensitive medium.
- Electrical Resistance
- Outstanding electrical properties with
low dielectric constant and dielectric loss factor. Does
not
support tracking or arcing.
- Temperature Resistance
- A wide range of working temperature cryogenic to about
280° C. No embrittlement in liquid helium. Thermal degradation
does not commence until temperatures
over 400° C. Does not melt to give a liquid phase an built-in
SAFETY FACTOR.
- Flexibility
- Outstanding resistance to fatigue and excellent
flex properties-one of the best flexural materials known.
- Extended Performance
- The performance of PTFE can be dramatically altered
by the use of fillers-FILLED PTFE materials
can be tailored for an exact application by choosing from
a wide variety of additives.
The
most common filled compounds are:
Carbon:
Excellent compression wear and thermal conductivity.
Used primarily for oil seals, grooved bearings, or
dry piston rings.
Glass: Improved compression wear. Used for dynamic
bearings, gaskets, or seals.
Graphite: Good thermal conductivity, low coefficient
of permeability and fiction. Use for seals, piston
rings, and self-lubricating seals.
Bronze: Excellent compression and wear properties,
good thermal conductivity, and low cold flow. Bronze
has poor chemical resistance, Use for compression area,
bearing pads and high wear application.
- Self Lubrication
- Frictional coefficients for PTFE are the lowest
for all solids and other materials have little or no adhesion
to PTFE.
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Copyright
© 2001-2003 Mastco Inc.
All rights reserved
2227
U.S Highway 1, #226
North Brunswick, NJ 08902
Tel: 732-422-9798
Fax: 732-422-0585
Toll Free: 1-877-6-MASTCO
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