Gilson PLC 2050, Руководство пользователя

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materiaLS
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PLC 2050/2250/2500 PurifiCation SyStemS
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Liquid Contact Materials
materiaL DeSCriPtion
Hastelloy C
This is the material most often recommended for corrosion resistance. This versatile
nickel-chromium molybdenum alloy has excellent resistance to most acids, including
strong oxidizers such as ferric and cupric chlorides; nitric, formic and acetic acids; wet
chlorine; sea water and brine solutions; and mixtures containing nitric acid or oxidizing
acids with chloride ions.
The best choice for most special applications where HPLC grade stainless cannot
be used, Hastelloy C has excellent resistance to pitting, stress corrosion cracking,
and oxidizing atmospheres up to temperatures well beyond any other standard
components of the chromatographic system.
Kalrez®
Kalrez® perfluoroelastomer parts (FFKM) resist over 1,800 different chemicals, while
offering the high temperature stability of PTFE (327°C).
They are used in highly aggressive chemical processing, semiconductor wafer
fabrication, pharmaceutical, oil and gas recovery, and aerospace applications. The
long-term, proven performance of Kalrez® parts can mean less frequent seal changes,
repairs and inspections, increasing process and equipment uptime for greater
productivity and yield.
Ketron® CA30 PEEK
Ketron® CA30 PEEK is a polyetheretherketone material with 30% carbon fiber
reinforced. The addition of carbon fibers enhances the compressive strength and
stiffness of PEEK, and dramatically lowers its expansion rate. It offers designers
optimum wear resistance and load carrying capability in a PEEK-based product. This
grade provides more thermal conductivity than unreinforced PEEK, increasing heat
dissipation from bearing surfaces improving bearing life and capability.
PCTFE
This material is a homopolymer of chlorotrifluoroethylene which has many of the
properties similar to other fluoropolymers such as PTFE or FEP, but is mechanically
superior in rigidity (does not deform easily), and has very low gas permeability. Its
dimensional stability makes it attractive for use as a component of a structural part
where the high temperature and chemical resistance of fluoropolymers is required.
PCTFE shows high compressive strength and low deformation under load.
PEEK
Considered relatively inert and biocompatible, poly-etheretherketone tubing can
withstand temperatures up to 100°C. Under the right circumstances, 0.005”–
0.020” (ID) tubing can be used up to 5000 psi for a limited time, and 0.030 to 3000
psi. Larger IDs are typically good to 500 psi. These limits will be substantially reduced
at elevated temperatures and in contact with some solvents or acids.
Its mechanical properties allow PEEK to be used instead of stainless in many situations
and in some environments where stainless would be too reactive. However, PEEK can
be somewhat absorptive of solvents and analytes, notably methylene chloride, DMSO,
THF, and high concentrations of sulfuric and nitric acid. This tubing is highly prone to
«kinking», or sealing off, if held in a sharp bend over time.
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