Fluoroplastics

Fluorosint® is a special PTFE variant with synthetic mica (MI) as filler. The relatively high mica content is produced in a special manufacturing process connecting directly to the PTFE, giving the material exceptionally good  mechanical properties without losing the typical PTFE capabilities.

Main features

• among PTFE high compressive strength
• low coefficient of linear thermal expansion
• heat deflection temperature up to 130°C

Fluorosint® is pressed into semi-finished products by the press-sintering process and then machined into technical components. We offer different types with tailorred properties respectivve the main areas of application.

FDA = suitable for food contact according to FDA

Most Fluorosint® grades exceed in compressive strength and modulus of elasticity those obtained with glass or bronze reinforced PTFE compounds significantly. The thermal coefficient of linear expansion of Fluorosint® is almost as low as that of aluminum without the chemical resistance being impaired by the fillers. Thus the material can be processed into very precise components, such as high-performance seals. Fluorosint® is also suitable for highly stressed sliding and sealing parts, since the mica does not attack most counter running partners.

Information about semi-finished products made from Fluorosint® are available here!

Polytetrafluoroethylene (PTFE) is a linear, semi-crystalline thermoplastic with almost universal chemical resistance. In addition, PTFE is characterized by very good electrical and dielectric properties and a continuous service temperature of 260°C off.

PTFE has an extremely low static and dynamic coefficient of friction  which is why it is also frequently used for the tribological modification of other plastics. However, the wear resistance is quite low. Furthermore, PTFE without fillers have only low mechanical strength and deform strongly under load.

Main features

• almost universal chemical resistance
• good electrical and dielectric properties
• low mechanical strength

Due to their property profile, all PTFE grades are only suitable to a limited extent for mechanically stressed applications. However, they are used in particular for seals and sealing elements, for insulation components and for mechanically very lightly loaded sliding elements.

PTFE blends well with high filler contents and is therefore available for use in many different types. At the same time, PTFE is the basis for various special plastics. In addition to the unfilled standard quality, we also offer qualities with different fillers.

FDA = suitable for food contact according to FDA

Information about semi-finished products made from PTFE are available here!

Polyvinylidene fluoride (PVDF) is a highly crystalline, thermoplastic fluoroplastic with relatively balanced mechanical properties. Compared to PTFE, PVDF has significantly better stiffness and compressive strength, but also a considerably lower continuous operating temperature of only 150°C.

PVDF shows high resistance to high-energy radiation and is considered as physiologically harmless. In addition, this plastic meets the highest purity requirements wand is therefore often used for applications in the chemical, food and beverage as well as semiconductor industries.

Due to its polar molecular structure, the electrical and dielectric properties of PVDF are limited and therefore only used to a limited extent for high-frequency applications. Upon request, a static dissipative type is available.

Main features

• high mechanical strength
• good radiation resistance
• heat deflection temperature 105°C.

The following types are available:

Components made of PVDF can be supplied with a statement of suitability for contact with foodstuffs in accordance with Regulation (EC) No. 1935/2004.

Information about semi-finished products made from PVDF are available here!

Thermoplastic fluoroplastics are semi-crystalline thermoplastics monomers  which -  in contrast to PTFE - can be easily thermoplastically processed, e.g. by means of injection moulding.

Due to its extremely high melt viscosity - above the crystallite melting range (>327°C) PTFE changes into a gel-like mass - PTFE can only be treated by means of pressing or sintering. The aim of further development has therefore been to create thermoplastic processable fluoropolymers.

A typical representative of these thermoplastic fluoropolymers is polyvinylidene fluoride (PVDF) which, however, clearly lags behind PTFE, especially regarding its bearing capacity.  In addition, there is a large number of other thermoplastically fluoropolymers with better processability (see PVDF) but always going hand in hand with restrictions in other property areas.

Main features

• thermoplastic processable
• good media resistance

Specifically, the thermoplastic fluoroplastics are:

Polytron PFA
Perfluoroalkoxy (PFA) is a thermoplastic copolymer of perfluoropropylvinylether with tetrafluoroethylene. As with TFM, but with a much larger proportion, the perfluoropropyl vinyl ether breaks up the strong molecular bond of the fluorine and carbon atoms which results in a significantly lower molecular weight and a better mobility of the molecular chains. PFA is thus completely thermoplastic processable and offers only slightly inferior properties to PTFE. >Data Sheet

Polytron FEP
Polyfluoroethylene propylene (FEP) is a copolymer of PTFE and hexafluoropropylene. In contrast to PTFE, FEP is thermoplastically processable due to its lower melt viscosity, but offers comparable properties in contact with chemicals and as a electrical insulator. However, the mechanical properties of FEP and the temperature resistance are lower than that of PTFE. >Data Sheet

Polytron PCTFE
Polyfluorotrifluoroethylene (PCTFE) is a semi-crystalline thermoplastic fluoropolymer containing good strength and hardness. Its property profile lies between that of PTFE and PVDF. PCTFE is weather stable and can be used in contact with food. >Data Sheet

Polytron ECTFE
Ethylene chlorotrifluoroethylene (ECTFE) is a semi-crystalline thermoplastic fluorocopolymer with good strength and hardness. Its property profile comes close to that of PVDF. ECTFE has a lower permeability to chemicals than PTFE and is especially suitable for applications in the chemical industry.>Data Sheet

Information about semi-finished products made from PCTFE are available here!