HOME > PRODUCT > Fluoropolymer Summary of fluoropolymer The molecular structure of fluoropolymer is same structure like polyethylene which is connected with C-C. It is a synthetic resin which is replaced from polyethylene hydrogen to fluoro molecule. The 70% marketed fluoropolymer is POLY TETRA FLUORO ETHYLENE(PTFE).　The teflon is crystallinity resin. It has heat-resistanace that resist for a long time at 260℃,include: chemical-resistance, electrical resistance , high frequency, non-tackiness, low efficient of friction ,fire resistance. The superior features of fluoropolymer are originated with strong combined energy(C-F combined energy 110~116Kcal/mol)between fluoro and carbon. The ptfe which is surrounded with fluoro around main chain of carbon has the best features . It is used widely compare to another high molecure due to non-tackiness , including low friction , weather-resistance. Feature of fluoropolymer heat -resistance - The fluoropolymer has fire resistance and heat resistance . Expecially the TFE and PFA are used commonly at 260℃.But those can be used at 300℃ for short time . The FEP is lower than fluoropolymer approximately 50℃.The PCTFE can be used for maximum 120℃ chemical- resistance - The fuloropolymer shows superior resitance against all chemicals .The PTFE, FEP, PFA are stable for all chemicals except fluorogas , including chlorine trifluoride ,melting alkali metal . It isn't eroded against all acids , alkalies, oxidants , organic solvents. electronic properties - It has good electrical insulation and high frequency. Expecially it is regular for non dielectric rate and dielectric tangent . It is the best among all insulators. features of friction and wear - It has the lowest efficient of friction compare to all solids and particular self lubrication .But ptfe is not good for wear-resistance ,including cold-resistance,flow-resistance,so it combine with fillers (ex.carbon,graphite,bronze,grass fiber,carbon fiber etc.) in order to improve wear-resistance and load -resistance non-tackiness - Because the fluroropolymer has non-tackiness ,it doesn't adhere to adhesive materials. It is easy to drop despite bonding with adhesive material. Type of fluoropolymer PTFE(Polytetrafluoroethylene) the lowest efficient of friction high inner heat temperature superior wear- resistance superior mole release superior chemical -resistance superior non- tackiness use temperature 260℃ PFA(Perfluoroalkoxy) low efficient of friction superior chemical- resistance superior high inner temperature low durability compare to PTFE superior melting and flow superior strength in conditon of wear non- tackiness use temperature 260℃ FEP(Fluorinated Ethylene Propylene Copolymer) low efficient of friction superior chemical -resistance superior non- tackiness superior electrical insulation superior corrosion resistance compare to PTFE use temperature 205℃ ETFE(Ethylene Tetrafluoroethylene Copolymer) superior chamical- resistance superior wear- resistance use temperature 150℃ PTFE It has the best heat -resistance (260℃, continous using temperature) among all fluoro chemicals . It is not erode against chemicals . And it has good electrical insulation ,including electrical features , low coefficient of friction. It is used largely among fluoropolymers for o-ring ,including gasket,tube,wire ,sliding bearing ,tank lining. PFA The PFA has heat- resistance like PTFE and good machinery properties for high temperature. It is possible to eject and extrude for the molding .It is used for semiconductor(water basket),pipe, corrosion -resistance lining . It can paint with powder and mold for extrusion with film. FEP The FEP has low heat- resistance ( 200℃) compare to ptfe and is similar to ptfe. It can extrude for molding as PFA. Because of high electrical insulation and fire-resistance , it is can be used for computer ,including cable , high speed optical transmitter. And it is used for film cover of solar battery due to good weather - resistance and transparency. It can paint with powder. ETFE The ETFE　has heat- resistance of 150℃ , and can eject and extrude for mold . It has superior machinery properties ,including chemical corrosion-resistance ,electronical features. It is used for hose lining of auto ,chemical pump housing, wires. PVDF The PVDF has heat- resistance of 150℃. It has superior machinery properties and electronics properties compare to another fluoropolymers. PCTFE The PCTFE has heat-resistance of 150℃. The chemical properties of PCTFE is lower than another fluoropolymers , but it has superior machinery properties. It can press and extrude for mold . It is used for chemical equipment ,pump, couple ring ,water proof film. division PTFE PFA FEP ETFE ECTFE PVDF nylon6 heat-resistance (common use,℃) 260 260 205 150 150 150 120 electronical properties ◎ ◎ ◎ ◎ ◎ ○ △ fire- resistance (1) 0.1% 95 95 95 30 60 43 24 fire- resistance (1) 0.1% △ △ △ ○ ○ ○ ◎ low coefficient of friction ◎ ○ ◎ △ △ △ △ chemical -resistance acid ◎ ◎ ◎ ◎ ◎ ○ × alkali ◎ ◎ ◎ ◎ ◎ ○ × solution ◎ ◎ ◎ △ ◎ △ × non- tackiness ◎ ◎ ◎ ○ ○ ○ × weather- resistance ◎ ◎ ◎ ◎ ◎ ◎ × transparency △ ○ ○ △ △ △ △ mold △ ○ ○ ◎ ◎ ◎ ◎ specific gravity 3.17 2.15 2.15 1.73 1.70 1.76 1.13 introductory remarks : ◎ very good, ○ good, △ possible for usage, × impossible for usage note(1) 0.1-oxygen limiting modulus (Vol%), The fire resistance is high as high as index note(2) in case of the thin molding product Filled PTFE The PTFE 　is superior material . But the machinery properties of ptfe is getting lower while used for machinery parts. The PTFE can be improved for the maintenace of low friction and press according to mixing with filler . It becomes strong for rigidity ,compressive strength , creep-resistance and low for thermal expension coefficient. The properties improvement according to filler is following . Type of filler and influence of properties filler shape blending amount effect Glass Fiber Milled Fiber > 40% graphite, use with MoS2 and Carbon * improvement for stiffness * improvement for wear- resistance * improvement for creep -resistance * improvement for chemical- resistance Carbon Carbon Fiber Powder Milled Fiber > 35% graphite, use with Bronze and Glass * improvement for compressive strength * improvement for wear- resistance * improvement for thermal conductivity Graphite Powder > 25% graphite, use with MoS2 and Carbon * improvement for friction and wear * improvement for lubricant * improvement for corrsion resistance Bronze Powder > 60% Carbon, use with graphite and MoS2 * improvement for creep resistance and compressive strength * improvement for compressive strength and wear- resistance * improvement for thermal conductivity MoS2 Powder > 5% use with Glass and Bronze * improvement for self lubricant * improvement for low friction PTFE all physical properties table reference to physical properties table of homepage only , among test methods ASTM D 621 → ASTM D 395 JIS K 6891 → ASTM D 638 The test method of compressive strength is ASTM D 695 The process of compression molding for PTFE Process of compression molding for p.t.f.e This is the method of compression molding for PTFE which produces assemblies and materials . Especially It produce the parts of electricity including: electron , semiconductor ,auto, machinery which are required for heat -resistance , including : lubricant ,electrical insulation ,non-tackiness , chemical resistance. Our ptfe material of low friction which is mixed with filler is use for machinery ,auto ,heavy equipment due to improved pressure -resistance , wear -resistance , creep-resistnace. It is a molding product with compressive press . We produce cutom -made manufacutre according to usage.   Pprocess of injection molding The engineering plastic products(PP, PBT, PEEK) and PTFE, PFA, ETFE are injected for mold . Process of precision processing for PTFE It is a precise process in the CNC lathe and Machining center with using pure ptfe and filled ptfe material. It can produce the products of complex shape and accurate size which is required for customer according to the maintenance of strict temperature. CNC Engineering