I-PTFE vs Teflon: Ingabe Ziyafana? – I-Besteflon

Uma sisebenza namakhasimende aphesheya kwezilwandle, sivame ukuhlangana nalesi simo: imidwebo ichaza ithubhu ye-PTFE, kuyilapho ikhotheshini yomhlinzeki iyibeka njengethubhu ye-Teflon, okushiya amaqembu okuthenga engaqiniseki ngokuthi abhekisela yini ezintweni ezifanayo futhi okubangela ukuqinisekiswa okuthatha isikhathi eside. Okuyinkinga nakakhulu, abanye abahlinzeki basebenzisa igama elithi "Teflon" ukubhekisela ku-PFA noma i-FEP—njengoba uphawu lokuhweba lwe-Teflon® luhlanganisa izinto eziningi. Lesi sihloko sinikeza incazelo ephelele yamagama, izimpawu zokuhweba, kanye nokucatshangelwa kokuthengwa okusebenzayo endaweni eyodwa.

•I-PTFE ne-Teflon zizinto ezifanayo;I-Teflon® yigama lokuhweba nje le-PTFE.

•Kodwa-ke, igama elithi "Teflon" liye lasetshenziswa kabanzi embonini futhikungabhekisela ku-PTFE, PFA, noma i-FEP.

•I-Chemours (eyayikade i-DuPont) iphethe uphawu lokuhweba lwe-Teflon®;abahlinzeki abangagunyaziwe abavunyelwe ukuyisebenzisa ngokusemthethweni.

•I-oda lokuthenga kufanele lichaze i-PTFE esikhundleni se-Teflonukugwema ukungaqondakali kokulethwa.

•"I-Teflon tube" enentengo ephansi kakhulu kungenzeka kakhulu ukuthi ayikhiqizwanga ngezinto zokusetshenziswa ze-Chemours;lokhu kudinga ukuqinisekiswa.

Ingabe i-PTFE ne-Teflon ziyinto efanayo?

Lona ngumbuzo oyinhloko, futhi impendulo ilula: yebo, i-PTFE ne-Teflon ziyizinto ezifanayo. Kodwa-ke, "izinto ezifanayo" kanye "negama elifanayo" akusho into efanayo ezimweni zokuthengwa kwempahla—ukuqonda lo mehluko kwenza yonke imibuzo elandelayo ibe lula.

I-PTFE = I-Polytetrafluoroethylene = Igama lekhemikhali

I-PTFE imele i-Polytetrafluoroethylene, eyaziwa kakhulu ngesiShayina ngokuthi "i-polytetrafluoroethylene." Lokhu kuyigama lamakhemikhali elibhekisela ku-polymer eyenziwe ngama-monomers e-tetrafluoroethylene. Kungakhathaliseki ukuthi ivelaphi imithombo yezinto zokusetshenziswa, yonke imikhiqizo ye-polytetrafluoroethylene eyenziwe yinoma iyiphi inkampani ibizwa ngokuthi i-PTFE—igama elijwayelekile lemboni elingelona elomkhiqizi othile.

I-Teflon® = Uphawu lokuhweba olubhalisiwe lwe-DuPont

I-Teflon® iwuphawu lokuhweba olubhalisiwe lwe-Chemours (olwasungulwa yi-DuPont ngo-2015). Ngo-1938, usosayensi waseDuPont uRoy Plunkett wathola i-PTFE ngephutha, futhi inkampani yaqala ukuyithengisa ngaphansi kophawu lokuhweba lwe-Teflon® ngo-1945. Empeleni, i-Teflon® ibhekisela ku-"PTFE ekhiqizwa yi-DuPont/Chemours" —njengoba nje i-Kleenex® imelela uhlobo oluthile lwamathawula ephepha.

Kodwa-ke, iqiniso liyinkimbinkimbi kakhulu kunalokho okushiwo yizincazelo. Embonini, igama elithi "Teflon" selifana ne-PTFE, futhi abahlinzeki abaningi basebenzisa leli gama ukuchaza imikhiqizo yabo ngaphandle kwemvume—umkhuba ovame kakhulu emkhakheni wokukhiqiza waseShayina: lapho amakhasimende ecela "amashubhu e-Teflon," abahlinzeki baqaphela lokhu njengokubhekisela kumashubhu e-PTFE. Kwa-Besteflon, sivame ukuhlangana nemibuzo enjalo; ngemva kokuqinisekisa imininingwane yezinto ezibonakalayo, sicacisa njalo i-PTFE kumadokhumenti asemthethweni ukuze sigweme ukungaqondakali.

 

Kungani igama elithi "Teflon" lingabhekiseli ku-PTFE?

Ukube i-Teflon ibiyigama lokuhweba le-PTFE nje, inkinga ibizoba lula. Kodwa-ke, empeleni, i-Chemours idayisa ama-fluoropolymer angaphezu kweyodwa ngaphansi kwegama lomkhiqizo i-Teflon®. Leli qiniso liyimbangela eyinhloko yokudideka kokuthengwa kwempahla futhi ligcizelela isidingo sokunemba okukhulu kumadokhumenti okucaciswa.

I-Chemours okwamanje ithengisa izinto ezilandelayo ngaphansi kophawu lwe-Teflon®:

 

 

Lokhu kusho ukuthi uma umhlinzeki ethi "sihlinzeka ngamapayipi e-Teflon," kungenzeka ukuthi ubhekisela kumapayipi e-PTFE, amapayipi e-PFA, noma amapayipi e-FEP. Lezi zinto ezintathu zihluka kakhulu ekumelaneni kwazo nokushisa okuphezulu, izidingo zokucubungula, kanye nentengo; iphutha lohlamvu olulodwa lingabangela izinga lokusebenza elihluke ngokuphelele lapho kulethwa.

Iseluleko: Sebenzisa njalo amagama amakhemikhali (PTFE/PFA/FEP) kuma-oda okuthenga, imininingwane, kanye nezinkontileka; gwema ukusebenzisa i-"Teflon." Lokhu akusikho nje ukugxeka kodwa kuyindlela elula yokuvimbela izingxabano zokulethwa. Qaphela ukuthi yonke i-BesteflonImikhiqizo yepayipi ye-PTFEzibhalwe ngamagama amakhemikhali esikhundleni se-"Teflon" - ngoba ukunemba kudlula ukulula.

 

Ubani ongumnikazi wophawu lokuhweba lweTeflon®?

Nakuba ubunikazi bophawu lokuhweba bungase bubonakale buyindaba esemthethweni, bunquma ngqo ukuthi abahlinzeki bakho bangasebenzisa ngokusemthethweni igama elithi "Teflon" nokuthi yiziphi izinto ezisetshenziswa ngempela "eshubhini le-Teflon" olithengayo.

Umlando Wophawu Lokuhweba

•1938,Usosayensi waseDuPont uRoy Plunkett wathola i-PTFE.

•1945:I-DuPont ibhalise uphawu lokuhweba lwe-Teflon® futhi yaqala ukuthengiswa kwalo.

•2015:I-DuPont yasungula ibhizinisi layo lamakhemikhali okusebenza yaba yinkampani ezimele i-Chemours, kanti uphawu lokuhweba lwe-Teflon® lwabelwa i-Chemours.

•Skude, I-Chemours iphethe uphawu lokuhweba lwe-Teflon® futhi inikeza amalungelo okunikeza ilayisense kubathengi be-PTFE resin emhlabeni jikelele.

Kusho ukuthini lokhu ngokuthengwa kwempahla?

Ubunikazi obusemthethweni bophawu lokuhweba bunemiphumela emibili ewusizo ekuthengeni:

1. Umhlinzeki wakho angase angagunyazwa ukulebula umkhiqizo nge-Teflon®.Uma umenzi wamapayipi esebenzisa ilogo ye-Teflon® kumalebula omkhiqizo noma kumawebhusayithi ngaphandle kokuthola imvume yomkhiqizo evela ku-Chemours, lokhu kuwukwephulwa komthetho kophawu lokuhweba. Lokhu akuthinti ikhwalithi yezinto ngokwazo—izimboni eziningi zaseShayina zisebenzisa i-resin ye-PTFE ekhiqizwe ngaphakathi (isib. i-Dongyue, i-Haohua, njll.), ehlangabezana ngokugcwele nezindinganiso zokusebenza—kodwa awukwazi ukulebula umkhiqizo wokugcina nge-Teflon®.

2. "I-Teflon tube" ayikwazi ukusetshenziswa njengesisekelo sokwamukelwa.I-oda lokuthenga kufanele licacise "ithubhu le-Teflon"; umhlinzeki angaletha noma yiluphi uhlobo lwepayipi le-fluoropolymer. Ukucacisa "ithubhu le-PTFE" noma "ithubhu le-PFA" kuphela okungasebenza njengendinganiso yokwamukelwa kobuchwepheshe uma kuba nezingxabano.

 

Ingabe izakhiwo ze-PTFE ezivela emithonjeni ehlukene ziyafana ngokuphelele?

Ngemva kokucacisa izinkinga eziphathelene nezimpawu zokuhweba kanye nemigomo yokuqamba amagama, ukukhathazeka okulandelayo ngamathimba okuthenga yile: Ingabe izinto ze-PTFE ezivela emithonjeni ehlukene zibonisa izakhiwo ezifanayo? Impendulo "iyafana ngokuyisisekelo, ngokushintshashintsha okuncane" — lo mehluko ngokuvamile awuthinti ukusebenza kwezinhlelo zokusebenza eziningi kodwa ungabangela izinselele ezimweni ezinembe kakhulu.

Izingxenye ezifanayo zazo zonke izinto ze-PTFE

Isakhiwo samakhemikhali se-PTFE sakhiwe ngamaketanga aqondile akhiwe ngamabhondi e-carbon-fluorine, futhi sihlala sifana kungakhathaliseki ukuthi izinto zokusetshenziswa zivela ku-Chemours, Daikin, Dongyue, noma abanye abaphakeli. Izakhiwo ezilandelayo ziyavumelana kuzo zonke izinhlobo ze-PTFE:

• Ukungapheleli kwamakhemikhali – cishe akukho ukusabela kwamakhemikhali okwenzekayo.

• Ububanzi bokushisa bokusebenza: -65°C kuya ku-+260°C

• I-friction coefficient – ​​0.1, iphansi kakhulu ezintweni eziqinile

• Izakhiwo ze-Dielectric – I-Dielectric constant: 2.1; Amandla e-Dielectric: 25 kV/mm

• Akunamatheli – Cishe zonke izinto azinamatheli

Yimuphi umehluko ongase uvele

Ukufana kwesakhiwo samakhemikhali akusho ukulingana okuphelele phakathi kwayo yonke imikhiqizo ye-PTFE. Izici ezilandelayo zingase zibe nomthelela ekuhlukeni phakathi kwemikhiqizo evela kumaqoqo ahlukene noma abaphakeli:

 

 

Izincomo ezibalulekile zokuthenga:Ngezicelo ezihilela ukucutshungulwa kwamakhemikhali okuvamile noma ukusetshenziswa okuvamile kwezimboni, ukuhlukahluka kwemithombo yezinto zokusetshenziswa akunakwa. Kodwa-ke, uma iphrojekthi ibeka izidingo eziqinile ekubekezeleleni ububanzi bangaphakathi (isb., amashubhu e-PTFE capillary), ukushelela kodonga lwangaphakathi, noma ukumelana nengcindezi yesikhathi eside, ukugxila kwakho akufanele kube nje kuphela ekutheni impahla iyi-PTFE, kodwa futhi nokuqinisekisa amakhono okukhipha kanye nokulawula ikhwalithi yomhlinzeki. Inqubo yokulawula ikhwalithi ye-BesteflonAmashubhu abushelelezi e-PTFE——kufaka phakathi ukuhlolwa kokuqina komoya, ukuhlolwa kokubamba ingcindezi ye-hydrostatic, kanye nochungechunge lokuqinisekiswa njengokuhlolwa kokucindezela okuphezulu, ukuhlolwa kokuqhuma kwe-hydraulic kanye nokuhlolwa kokukhathala kokugoba, okuqinisekisa ukuthi imikhiqizo ihlangabezana nezindinganiso zomkhakha we-fluoroplastic. Yenzelwe ngqo izimo ezinjalo ezinembe kakhulu.

Kufanele ibhalwe kanjani ku-oda lokuthenga?

Ingxoxo ihlanganise umehluko emithethweni yokuqamba amagama, izimpawu zokuhweba, kanye nezinto zokwakha, ekugcineni igxile embuzweni osebenzayo: le mininingwane kufanele ichazwe kanjani kuma-oda okuthenga kanye nezincazelo zobuchwepheshe?

Sebenzisa amagama amakhemikhali, hhayi amagama emikhiqizo

 

Ukubhala igama lezinto kuphela akwanele

Ukusho nje ukuthi "i-PTFE tube" akwanele. Imininingwane ephelele yokuthenga kufanele ifake okulandelayo:

•Ibanga Lezinto:Ibanga Elijwayelekile / Ibanga Lokudla (kuyahambisana ne-FDA 21 CFR 177.1550) / Ibanga Lezokwelapha

•Usayizi: I-ID × OD × Ubukhulu bodonga, kanye nezidingo zokubekezelelana

•Ubude kanye nobuningi

•Icala Lokusebenzisa:Kusiza abahlinzeki ukuthi banqume ukuthi kudingeka yini ukulawulwa kwekhwalithi okukhethekile

•Izitifiketi ezidingekayo kanye nemibiko yokuhlolwa

Enqubweni ye-Besteflon yokucaphuna, isinyathelo sokuqala onjiniyela abasithathayo ukuqinisekisa lezi zinhlaka. Lokhu akusikho ukugxekwa—kunalokho, lapho imininingwane ichazwa ngokucacile, inqubo yokulethwa iba bushelelezi futhi kuyanda izidingo zokulungisa kabusha.

 

Imibuzo Evame Ukubuzwa

Nansi imibuzo evame ukubuzwa amakhasimende mayelana "ne-PTFE vs Teflon." Uma isimo sakho singakambozwa, zizwe ukhululekile ukucela usizo konjiniyela bethu ngqo.

 

Q: Umhlinzeki uthi usebenzisa "izinto zeTeflon" - ingabe lokho kuthembekile?

A: Kudingeka ukucaciswa okwengeziwe. Uma bebhekisela ku-resin ye-PTFE yohlobo lwe-Chemours 'Teflon®, kufanele ucele ubufakazi beqoqo lezinto zokusetshenziswa. Uma igama elithi "Teflon" lisetshenziswa nje njengegama elijwayelekile le-PTFE (elivame embonini), izinto zokusetshenziswa zingavela kunoma yimuphi umhlinzeki we-resin ye-PTFE—lokhu akuyona inkinga ngempela, kodwa akunakucatshangwa ukuthi kuvela ku-Chemours. Eziningi zezicelo zezimboni, ama-resin e-PTFE akhiqizwa ekhaya asezingeni eliphezulu (njengalawo avela e-Dongyue noma e-Haohua) ahlangabezana nazo zonke izidingo zokusebenza.

Q: Ingabe igama elithi "Teflon" linganyatheliswa kushubhu ye-PTFE?

A: Uma izinto zombhobho zingasebenzisi i-resin ye-Chemours' Teflon® noma zingenalo igunya elivela ku-Chemours lophawu lokuhweba, ukuphrinta i-"Teflon" kumkhiqizo kuwukwephulwa kophawu lokuhweba. Kunconywa ukuphrinta i-"PTFE" epayipini - le ndlela iyahambisana futhi icacile.

Q: Ama-resin e-PTFE e-Chemours aphansi kangakanani uma eqhathaniswa nemikhiqizo ye-PTFE ekhiqizwe ekhaya?

A: Ezisetshenzisweni zezimboni ezivamile, ukuhlukahluka akunakwa. Umehluko omkhulu uvela kakhulu ngaphansi kwezimo ezimbi kakhulu: ukuqina kokukhipha kwe-ultrafine capillary tube (ID<0.5mm), ukumelana nokuqhekeka ekushiseni okuphezulu isikhathi eside (>200℃), kanye nezidingo zobumsulwa eziqondene nezicelo zezokwelapha noma ze-semiconductor. Uma isicelo sakho singabandakanyi lezi zimo ezimbi kakhulu, izinto zokusetshenziswa ezikhiqizwa ekhaya zingahlangabezana ngokugcwele nezidingo ngezindleko eziphansi.

Q: Iklayenti lami licela "amashubhu e-Teflon" - kufanele ngiqhubeke kanjani?

A: Qinisekisa nekhasimende ukuthi lidinga amashubhu e-PTFE noma amashubhu e-PFA/FEP. Ezimweni eziningi, lapho amakhasimende ebhekisela "kumashubhu e-Teflon," empeleni abhekisela kumashubhu e-PTFE. Uma sekuqinisekisiwe, faka "ishubhu le-PTFE" esikhundleni se-"tube le-Teflon" kunkontileka njengencazelo esemthethweni yokugwema izingxabano zesikhathi esizayo.

Q: Ngingahlukanisa kanjani ngokushesha phakathi kwe-PTFE, i-PFA, ne-FEP?

A: Indlela elula: okungabonakali = PTFE, okusobala kancane = PFA, okusobala ngokugcwele = FEP. Uketshezi ku-FEP lubonakala ngokucacile ngepayipi; oluku-PFA lubonakala lubonakala kodwa lufiphele kancane; kanti oluku-PTFE alubonakali nhlobo. Lokhu kuwukuhlola okusheshayo nje—ukuze ukhethe okuqondile, bheka ithebula lokuqhathanisa elinobukhulu obuyisi-7 esihlokweni.I-PTFE vs PFA vs FEP Tubing.

Q: Kungani kukhulunywa nge-"Teflon" ku-Besteflon'siwebhusayithi?

A: I-Besteflon ithole imvume esemthethweni yokusebenzisa uphawu lokuhweba lwe-Teflon® futhi isebenza ngaphansi komthetho. Singumkhiqizi okhethekile wamashubhu e-Teflon, okuhlanganisa amashubhu e-PTFE namashubhu e-PFA/FEP.