Fluoropolymeres — Basis of our Products Fluoropolymeres

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Fluoropolymeres - Basis of our Products

Fluoropolymeres Material properties Resistance to chemicals Surface condition Purity (Leaching) Permeation PTFE TFM-PTFE PFA

Fluoropolymeres Outstandig chemical stability Service temperatures up to 260°C Extremely anti-adhesive, smooth surface Ultra-high purity Superior electrical insulator Hydro-phobic

Fluoropolymeres - Material Properties PTFE Fluorine PP Carbon PVDF -[CH 2 -CF 2]n. TFM PTFE -[CF 2 -CF 2]n- Fluorine Oxygen TFM Carbon PFA Fluorine PFA Oxygen

Composition and Poperties of PTFE Perfluorinated plastic with melting point of 327 °C, molecular weight approx. 108 g/mol Complete protection of C-C-bonds by F-atoms Processable by pressing, sintering and chip removing technics Nearly universal resistance to chemicals Service temperature: - 250 °C to + 250 °C High purity, excellent dielectrical properties No embrittlement, no aging

Composition and Poperties of modified PTFE: TFM-PTFE Molecular weight is about 1/5 of the molecular weight of PTFE Contains the same perfluorinated modifier as PFA, but less than 1 % Therefore TFM-PTFE closes the cap between classical PTFE and PFA Weldable by special technics, thanks to the „shift versus thermoplastic properties“ Cold-flow, pore content and stretch-void-index are improved

Composition and Poperties of PFA Thermoplastic processable perfluorinated polymere Molecular weight approx. 1 % of PTFE, therfore processable by fusion 4 to 10 % modifier melting point: 305 to 290°C Highly modified highly amorph: high transparency, improved alternate bending and good chemical resistance to stress crack Chemical stability and service temperature comparable with PTFE Processing methods: injection molding, extrusion, transfer molding Thermoplastic processing technics open up new applications for this „material with PTFE-properties“

Fluoropolymeres - Material Properties PTFE PVDF - 250 -60 to to + 250 persistence to chemicals PFA - 250 temperature range [°C] TFM + 250 + 150 very high; reacts with strong bases (NH 3) molecular weight tensile strength (ISO 12 086) ~ 108 g/mol 2 x 107 g/mol 20 - 40 N/mm 2 41 N/mm 2 106 g/mol 15 - 30 N/mm 2 40 - 60 N/mm 2

Fluoropolymeres - Resistance to Chemicals Chemical Effect fluorinated hydrocarbons swelling, reversible at short-term exposition alkali metals, dissolved or molten elimination of fluorine and polymere decomposition halogenes, elemental fluorine, chloro trifluoride chem. reaction possible at elevated temperatures, material decomposition, possibly violent reaction nitrating acid (H 2 SO 4 / HNO 3) above 100°C slow material decomposition, carbonisation monomeres: styrene, butadiene, acrylnitrile. . . could penetrate into the material; at spontanous polymerisation: swelling or polymere decomposition. popcorn-effect high-energy radiation -radiation: dose of 10 k. Gy could reduce the mechanical properties by more than 50%

Fluoropolymeres - Surface Condition Chip removing production without polishing PTFE TFM Injection molding PFA

Fluoropolymeres - Purity (Leaching of Fluoropolymeres) PTFE Extraction time: Medium: Temperature: Result: 2 days 2% HNO 3 20 °C ng/cm 2 Mg Al Li B F Na P S Cl K Ca Cr Mn Fe Ni Cu Zn Br Mo Pb TFM PFA-HP 2, 58 3, 73 < 0, 0002 0, 085 1173 18, 10 <4 598 21 18, 40 21, 90 0, 085 0, 098 5, 04 0, 63 21, 4 6, 43 4 0, 31 2, 52 1, 40 2, 20 < 0, 0002 0, 091 1320 10, 00 <4 500 21 10, 00 11, 00 0, 10 < 0, 002 3, 10 0, 38 24, 3 4, 00 4 0, 061 1, 80 1, 18 5, 00 < 0, 002 < 0, 01 3522 5, 38 <5 1164 27 5, 32 14, 00 0, 19 < 0, 002 2, 97 < 0, 003 0, 049 1, 23 5 < 0, 001 0, 33

Fluoropolymeres - Purity (Leaching of PTFE-TFM) ppb 40 37, 0 36, 0 35 30 2 % HNO 3 25 49 % HF 20 DI Wasser 14, 5 15 13, 0 9, 5 9, 0 10 7, 2 6, 0 5, 7 4, 8 5 1, 44 < 1, 5 3, 8 < 2, 9 < 1, 5 < 0, 6 < 0, 9 n. d. * 0 Na Al Conditions: Mg Cu Cr Fe Conclusion: 2 mm plate material Purity in accordance with specification for PFA-HP 2% HNO 3, 49% HF : 20 °C, 7 days lower concentrations of Cr, Ni, Mo than in PFA-HP DI water 80°C, 7 days

Fluoropolymeres - Permeation in cm³ m²·day·bar Permeation of HCl-Gas at 100°C Thickness in µm

Fluoropolymeres - Permeation in cm³ m²·day·bar Permeation of water vapour at 100°C Thickness in µm

Your Benefit Hiogh competence through in house production Customized solutions possible PTFE and TFM-PTFE comparable with PFA Solid, longevity PTFE-TFM-products (inserts, pressure vessels etc. )

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