PVDF, ETFE, E-CTFE and Filled Tubes
Adtech can supply Du Pont Tefzel ® ETFE, ECTFE and Solef PVDF extruded tubing.
These fluoroplastics are both rigid high tensile strength materials and allow tubing made from them to be used at high pressures. They also have some permeation and chemical advantages over other fluoroplastics.
PVDF (Poly Vinlidene Fluoride) Tubing:
Trade names: Kynar, Solef
This is a very hard plastic roughly comparable to Halar and relatively cheap compared with other fluoroplastics. Good chemical resistance, but not as good as C-TFE and ETFE.
PVDF tubing is particularly easy to hand weld and used in conjunction with PVDF sheet can be used to fabricate chemical laboratory equipment.
ETFE (Ethylene Tetra Fluoro Ethylene Co Polymer) Tubing:
Trade name: Tefzel
Du Pont developed this material as a 'Tough Teflon'. It is a normal thermoplastic but it is much harder than PTFE & FEP and is similar in hardness to nylon, therefore, it's used as an 'Engineering Plastic'. The improvement in stiffness is paid for by reduced chemical resistance and working temperature.
E-CTFE (Ethylene-Chloro Tri Fluoro Ethylene) Tubing:
Trade name: Halar
A tough plastic with similar properties to Tefzel. Used mainly for its chemical resistance.
Normally PVDF and ETFE tubing is produced to order, but we do stock a limited range of standard sizes.
PTFE, FEP & PFA with fillers
Despite fluoropolymers having an extremely low co-efficient of friction, the material can wear quite easily. By adding a 'filler' to the fluoropolymer you can change the wear resistance and conductivity, without greatly affecting the lubricious surface.
Carbon Filler - Offers better wear resistance and thermal conductivity, it does also increase the anti-static properties.
Graphite Filler - Offers better wear resistance and thermal conductivity, it does also increase the anti-static properties.
Anti-Static Filler - Has been designed with much smaller coal particles than with the standard carbon/graphite fillers and so the material becomes conductive, making it the best solution for anti-static applications.
Ceramic Filler - Increases the wear resistance.
Bismuth Trioxide Filler - This filler is specifically used for medical applications. Once this filler has been added to the fluoropolymer, the material is then visible to X-Ray, this is also sometimes referred to as radio-opaque tubing. This can be applied as a solid filler or as a stripe along the length of the tube.
Please contact our technical sales department for details on +44 (0) 1285 762000 or email firstname.lastname@example.org if you can't find the information you require, as our knowledgeable team will be able to assist you.
PVDF, ETFE, and ECTFE are all members of the fluoroplastic family. However, their properties vary slightly to PTFE, FEP, and PFA so that they offer more wear resistance and have better tensile strength.
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