产品名称: 美国杜邦(科慕) PTFE 601 X
极高分子量
优异的延展性
产品详情
Product Information
Description
Teflon™
PTFE 601 X is a polytetrafluoroethylene fine powder
resin used primarily for paste extrusion. Teflon™
PTFE 601 X
offers the excellent combination of properties typical of
Teflon™
fluoroplastic resins:
• Chemical inertness to nearly all industrial chemicals and
solvents
• Superior in-use thermal stability (low thermal
instability index)
• Exceptional dielectric properties, stable with
frequency and temperature
• Toughness and flexibility
• Low coefficient of friction
• Non-stick characteristics
• Negligible moisture absorption
• Excellent weather resistance
• Service temperature up to 260 °C (500 °F)
• Useful properties at –240 °C (–400 °F)
• Moderate stiffness and high ultimate elongation
Teflon™
PTFE 601 X is designed for processing at low to
medium reduction ratios of 10:1 to 300:1. It is particularly
suitable for unsintered stretched products and for sintered
products with high mechanical properties.
Teflon™
PTFE 601 X meets the requirements of ASTM
D4895, Type I, Grade 1, Class A.
Typical Applications
Teflon™
PTFE 601 X is mainly used for unsintered articles,
including filter membranes and gaskets.
Processing
Teflon™
PTFE 601 X is extruded using a liquid processing
aid, such as naphtha. In the paste extrusion process, the
powder is mixed with a lubricant aid and then compressed
into a cylindrical preform slug under light pressure
(1.5–2.0 MPa [220–290 psi]). The preform slug is placed in
the cylinder of a paste extruder, where the composition is
forced under high pressure through a finishing die to produce
beading, tubing, or wire coatings.
After extrusion, the product is a low-density, but coherent,
fibrous structure. After removal of the lubricant by heating
within the range of 100–300 °C (212–572 °F), the
extrudate can be either sintered above its melting point
of around 345 °C (653 °F) to produce a void-free PTFE
article or calendered and stretched to produce unsintered or
semi-sintered articles.
Food Contact Compliance
Properly processed products (sintered at high temperatures
common to the industry) made from Teflon™
PTFE 601 X resin
can qualify for use in contact with food in compliance with
FDA 21 CFR 177.1550 and European Regulation (EU) No.
10/2011. For details and information, please contact your
Chemours sales representative.
Safety Precautions
Before processing any fluoroplastics, read the Safety
Data Sheet, available upon request from our Customer
Service Group at (844) 773-CHEM/2436 in the U.S.
or (302) 773-1000 outside of the U.S. Also read the
detailed information in the latest edition of the “Guide to
the Safe Handling of Fluoropolymer Resins,” published by
the Fluoropolymers Division of The Society of the Plastics
Industry (www.fluoropolymers.org) or by PlasticsEurope
(www.plasticseurope.org).
Teflon™ PTFE 601 X
Teflon™
PTFE 601 X Fine Powder Fluoroplastic Resin
Storage and Handling
Teflon™
PTFE fine powder resins must be handled carefully to
avoid shearing the powder prior to extrusion. Fibrillation by
shearing is not reversible, and damaged particles can appear
as defects in the finished product. As temperature is reduced
below the transition point of 19 °C (66 °F), the powder
becomes progressively less sensitive to mechanical damage or
compaction in its containers.
Chemours recommends that powder compacted during shipping
and storage be restored to its optimum condition by cooling it
for one or two days below 19 °C (66 °F), followed by screening
through a 2 to 4.76 mm opening sieve (4 to 10 mesh). Lumps
that are retained on the sieve that can be broken up by shaking
at temperatures below 19 °C (66 °F) may be used; however,
harder lumps that cannot be broken up should be discarded.
All processing steps prior to preforming should be done
at reduced temperature, but ambient dew point must be
controlled to prevent condensation on the resin. Storage
and handling facilities should be clean to avoid any crosscontamination.
The high sintering temperature causes even
very small foreign particles to become visible or to cause
defects in finished products. Keep resin drums closed
and clean.
Packaging
Teflon™
PTFE 601 X resin is packaged in 27.2-kg (60-lb)
plastic containers. For convenient shipment, orders in
multiples of 326.4-kg (720-lb) pallets (12 drums) are
recommended.
