I-PolytetrafluorororoothlOothyle (PFA) vs. I-Polytetrafluoroothyyyyyey (Ptfe)

1. Isakhiwo sekhemikhali:

I-PFA ibandakanya i-perfluoAlkoxy, elingana nenye yeeathom ze-fluorine kwi-ptfe ithathelwe indawo yi-perfluoalkolkoxy. Ikharbon iqhotyoshelwe ngqo kwioksijini, kwaye ke ioksijini iqhotyoshelwe kwiqela elinje nge-perfluoromethyl okanye i-perfluorothyl. Xa kuthelekiswa ne-ptfe, kunciphisa ukunyibilikisa i-vicofity kwaye iququzelele ukuqhubekeka. Zonke ezinye iipropathi nge-ptfe ayifani kakhulu.

2. Umahluko kwisicelo:

I-PFA inepropathi efanayo ye-PTFE, kodwa ikwane-Thermoplasticisticy elungileyo, kwaye inokuba i-thermoplatic igqitywe ngeendlela zokulungisa izinto eziqhelekileyo ze-thermoplastic. Iveliswa yi-copolymering ptfey kunye ne-perfluoroPyl vinyl ether kwinxalenye ethile ye-apflued equkethe i-perfluocrocarbarvex okanye ijongwa njengamasuntswana amhlophe. Ayinawo kuphela iqondo lobushushu linye kuphela njenge-ptfe, kodwa ikwanamandla angcono ngoomatshini nge-250 ℃ (malunga ne-2 ~ 3) kunye noxinzelelo olufanelekileyo lokunganyangeki. Kuluhlu ngokubanzi kunye nokusebenza okuhle, kufanelekile ukwenziwa kokubumba, ukupheliswa, inaliti, inaliti, ukuhambisa iinkqubo zokubumba. Ingasetyenziselwa ukwenza i-wire kunye ne-carble i-thebys, i-carbleds ephezulu kunye ne-Ultra-Righ-Righ-Righ-Right-Righ-Right-Reble-Righ-Right-Reble-Right-Lines-Arings-Ilines ezichasene nemibhobho yeekhemikhali, iivalves kunye neempompo; Inxalenye ekhethekileyo yokuphumla yecandelo lomatshini, izixhobo ezahlukeneyo ze-anticorrosives zeshishini lendwangu, kunye nePolytetrafluothluenene ye-antikoordive, kunye nezinye iintonga zedokom. Yenziwe ngokukhulisa igranung cudlues ye-PPUS, ngembonakalo ye-semi-efikayo ye-semi-efikisayo iMilparey Special, indawo egudileyo, inomsindo kunye necandelo leyunifomu. Isetyenziswe ngokukodwa kwi-welding ye-pilfey yeplate kunye nombhobho, ukuze iimveliso ze-ptfe ezinemilo elula zinokwenziwa kwiimveliso ezinobunzima obunzima kunye nobukhulu obukhulu. Ukusasazeka kwamanzi kufunyenwe ukongeza i-enulsifier kwi-copolymer efunyenwe yi-Copolymerization Repolly ye-PTFE kunye ne-PerfluOropyl Vinyl Ether, emva koko igxile kubushushu obuthile. Umxholo oqinileyo ngama-30% ± 1%. Inkangeleko i-mildy emhlophe okanye ekhanyayo etyheli. Inendawo ezahlukeneyo ze-resin efanelekileyo ye-ptfey ptfen ye-ptfe. Ingasetyenziselwa ixesha elide ngo-260 ℃, kunye nokuhlaselwa kwayo ngokuchasene ne-antiveres, ukusebenza ngokulula, ukusebenza ngokulula kuphunyezwe kubacikichi abaphambili, ukutshiza, kunye nokungaboniswa, kwaye kusetyenziswa kwinani letekhnoloji yokufota kunye neshishini lokutya njengoko Izinto ezinamathele-zinamathele, i-anti-colosion.

I-PTFE-iPolytetrafluororoothylene iveliswa yiPolymerization yeTetrafluoroothylene Monomer ngokumiswa okanye indlela yokusasazwa. Ubunzima bemolekyuli = 5.2 × 105-4.5 × 107, i-× 107, i-75% yeenjongo ezingama-400, engenabungozi, engenabungozi. Ukuxinana kwesihlobo 2.1 Ngo-400 ℃ Ngaphezulu komkhondo wokulahleka kwesisindo kunye nokubola kweegesi ezinetyhefu. Sebenzisa ubushushu -250 ~ 260 ℃, kwi-210 ℃ Sebenzisa ukuya kwi-10,000 h. Ukungavisisani kweekhemikhali, ukunganyangeki kuye nasiphi na i-acid eyomeleleyo (kubandakanya i-Aqua Gregia), i-Alkali eyomeleleyo, i-Geali, i-inflican engapheliyo, i-ista ye-arasion elungileyo kunye nokuzibandakanya. Ukunganyangeki okugqwesileyo. Iipropathi ezigqwesileyo zombane, ukunganyangeki okuhle kwe-arc. Inganamathela, phantse zonke izinto ezinamathele azinakulandela ngqo umphezulu, ngokupheleleyo ngokupheleleyo. Inegama "uKumkani weplasitiki". Amandla obunqindi (MPA)> I-23 ye-3)> 250.

3. Umahluko wokuqhubela:

Umahluko ophambili ekuqhubeni kukuba i-PFA inokuthi inyibilike i-Inaliti eqingqiweyo, ngelixa i-ptfe ayikwazi ukuba inaliti inyibilikisi.

Oku kungasentla yintshayelelo kumlohluko phakathi kwezixhobo ze-PFA kunye ne-PFFE .

Ixesha elide, i-ptfe ifunwe emva komzi-mveliso ngenxa yepropathi yayo ebalaseleyo yomzimba kunye nekhemikhali. Nangona kunjalo, ukusikelwa umda kweendlela zawo zokulungisa kubangele oososayensi abaninzi kunye neenjineli ukuba zibandezeleke kakhulu. Ekugqibeleni, emva kokuqaliswa kwe-PFA ukuya kwintengiso, ifumene ishishini leplastiki elifunwayo. Ezi zixhobo, kunye neepropathi ezifanayo ne-ptfe, zinepropathi ebalaseleyo, ngaloo ndlela ukusombulula iingxaki zenjineli.