Shanghai Daoqin Plastics Co., Ltd.

       PFA in market upper 逐步普 and, 越 越 more 客户开始接触 and this type of new type material. has 初步认识, non 常熟悉, this type of material also has very more 疑问. most 近, has 客户会问 to this type of new material “ can solvent property PTFE （PFA)” and “ PTFE （PTFE) between difference ”. 今天, 我们就 in this simple understanding lower:

首先 is chemical structure difference:
PFA add full fluorine oxygen 基, versus 当于PTFE in fluorine by full fluorine oxygen 基 取代. certain carbon 直接连 upper oxygen, rear oxygen again full fluorine or full fluorine 乙基之 type 基团. and PTFE versus ratio, reduce melt viscosity has processing. its property 质跟PTFE差 不太 more.

its is application difference:

PFA-- tool has PTFE same various excellent property can, but also tool has good thermoplastic property, can use thermoplastic property resin processing methods thermoplastic processing. is fluorine ethylene and full fluorine ethylene ether 以一定 ratio/proportion in has full fluorine acid salt dispersant, acid salt agent water in copolymer made,观 is white semi transparent pellets. not only tool has and PTFE same use temperature degree, but also in 250℃时 has more good machine strong/high degree (约2～3倍), resistant force cracking property can excellent 良. its processing scope/range wide, molding property can good, combined compression molding, 挤塑, injection molding, 传递模塑 and other molding processing. can made as electrical cable insulation sleeve/set, high frequency and ultra-high frequency insulation parts, chemical industry pipeline, and corrosion resistant 衬里; machine industrial use 特殊零 parts, light industrial use various anti material, PTFE anti 腐衬里 and other strip/profile. can property PTFE material extrusion made, appearance is semi transparent white, surface light slip, 截面致密 uniform. used for PTFE sheet/plate, tube/pipe welding, make PTFE simple products, welding formed complex, dimensions relatively large made parts. water dispersion liquid is fluorine ethylene and full fluorine ethylene ether copolymer reaction to copolymer add emulsification agent, 于一定 temperature degree lower concentrated shrink rear. solid content is 30％±1％. appearance is white or color semi transparent. tool has can property PTFE resin tool has various excellent property can. can in 260℃ lower long use, its excellent anti 黏, anti 腐, easy processing properties development formed coating material, can spray coating, 浸渍, by a large amount of used for technology and food industrial in as is anti 黏, anti material.

PTFE-- PTFE is fluorine ethylene mono using/adopting method or dispersion method polymerization made. molecular weight ＝5．2×105-4．5×107. white powder 末, 400目 占75％, 无味, 无美, 无毒. versus for density 2．1-2．3, rate 1．37, 玻璃化 temperature degree 327℃, hot separation understanding temperature degree 415℃. in 400℃ above has micro amount heavy separation understanding has gas 体. use temperature degree -250～260 ℃, in 210 ℃ use can 达10000h. excellent chemical resistant property, resistant strong/high acid (包括王 water), strong/high alkali, 油脂, solvent 于任何 solvent agent, friction coefficient low, wear resistance good, has lubricated property. resistant aging property excellent 良. electrical property can excellent, resistant electrical property good. tool has viscous property, has viscous property material 质都不 can viscous its surface, full 无燃烧 property. has “ plastics 王”之称. tensile strength (MPa)＞23   elongation (％)＞250.

again is processing methods difference:
processing methods most main/primary difference is, PFA can hot injection molding processing, 而PTFE不 can hot injection molding processing.

        above is for PFA and PTFE材 material difference introduction. in very long time 里, PTFE因 is has non excellent material and chemical property can, to industrial field/area 追捧. is its processing methods property, make very more 科学家 and engineering 师苦恼不 already. 终于, in PFA launch market rear, to plastics industry new 追捧. this type of property can similar 于PTFE material, has non excellent processing properties, from let engineering difficult 题迎刃而 understanding.

        in PFA材 material 逐渐广泛运 use meanwhile, 也祝愿科学家们 can R&D more 先进, more excellent material meet/satisfy market demand.