Is PTFE Tubing Flexible?| BESTEFLON

I-Polytetrafluoroethylene (i-polytetrafluoroethylene) cishe iyi-fluoropolymer esetshenziswa kakhulu ngoba inezici ezimbalwa eziyenza ibe yimpahla efanelekile yezinhlelo eziningi ezahlukene.Iguquguquka kakhulu kunamanye amapayipi afanayo futhi ingamelana cishe nawo wonke amakhemikhali ezimboni

Izinga lokushisa licishe libe ngu-330°F kuya ku-500°F, lihlinzeka ngebanga lokushisa elibanzi kakhulu phakathi kwama-fluoropolymers.Ngaphezu kwalokho, inezindawo ezinhle kakhulu zikagesi kanye nokufinyeleleka okuphansi kazibuthe.I-Ptfe tubing iyishubhu yaselabhorethri esetshenziswa kakhulu futhi isetshenziswa lapho ukumelana nokuhlanzeka kwamakhemikhali kubalulekile.I-PTFEine-coefficient ephansi kakhulu yokungqubuzana futhi ingenye yezinto "ezishelelayo" ezaziwa kakhulu

Izici:

100% inhlaka ye-PTFE ehlanzekile

Uma kuqhathaniswa ne-FEP, PFA, HP PFA, UHP PFA, ETFE, ECTFE, amapayipi e-fluoropolymer aguquguquka kakhulu

Inert ngamakhemikhali, imelana cishe nawo wonke amakhemikhali ezimboni nezincibilikisi

Ibanga lokushisa elibanzi

Ukungena okuphansi

Isiphetho esibushelelezi esinganamatheli

I-coefficient yefriction ephansi kakhulu

Ukusebenza kahle kagesi

Okungashi

Non-toxic

Izicelo:

ilabhorethri

Inqubo yamakhemikhali

Ukuhlaziya kanye nemishini yokusebenza

Ukuqapha i-Emission

Izinga lokushisa eliphansi

izinga lokushisa eliphezulu

Ugesi

ozone

Ukwakheka kwama-molecule e-PTFE

I-Polytetrafluoroethylene (PTFE) yenziwe nge-polymerization yama-molecule amaningi e-tetrafluoroethylene.

Lo mdwebo olula we-PTFE awubonisi ukwakheka kwe-athomu ye-molecule.Ku-poly molecular (ethylene), umgogodla we-carbon we-molecule uxhunywe ama-athomu e-hydrogen kuphela, futhi lolu chungechunge luguquguquka kakhulu - aluyona neze i-molecule eqondile.

Nokho, ku-polytetrafluoroethylene, i-athomu ye-fluorine eqenjini le-CF2 inkulu ngokwanele ukuthi iphazamise i-athomu ye-fluorine eqenjini eliseduze.Kufanele ukhumbule ukuthi i-athomu ngayinye ye-fluorine inamapheya ama-3 wama-electron eyedwa aphuma ngaphandle

Umthelela walokhu ukucindezela ukujikeleza kwebhondi ye-carbon-carbon single.Ama-athomu e-fluorine ajwayele ukuhleleka ukuze abe kude kakhulu nama-athomu e-fluorine aseduze.Ukuzungezisa kuvame ukubandakanya ukushayisana kwepheya eyodwa phakathi kwama-athomu e-fluorine kuma-athomu ekhabhoni aseduze-okwenza ukuzungezisa kungathandeki ngamandla

Amandla aphikisayo akhiya i-molecule ibe yisimo senduku, futhi ama-athomu e-fluorine ahlelwa ngokuzungeza okuthambile kakhulu—ama-athomu e-fluorine ahlelwe ngokuzungeza umgogodla wekhabhoni.Le micu yokuhola izompindwa ndawonye njengamapensela amade, azacile ebhokisini

Leli lungiselelo lokuxhumana eliseduze linethonya elibalulekile emandleni e-intermolecular, njengoba uzobona

Amandla e-Intermolecular kanye nephoyinti lokuncibilika le-PTFE

Iphoyinti lokuncibilika le-polytetrafluoroethylene licashunwe njengo-327°C.Lokhu kuphakeme kakhulu kule polymer, ngakho-ke kufanele kube namandla amakhulu e-van der Waals phakathi kwama-molecule

Kungani abantu bethi amabutho e-van der Waals ku-PTFE abuthakathaka?

Amandla okuhlakazeka kwe-van der Waals abangelwa ama-dipoles ashintshashintshayo akhiqizwa lapho ama-electron aku-molecule ehambahamba.Ngenxa yokuthi i-molecule ye-PTFE inkulu, ungalindela amandla amakhulu okuhlakazeka ngoba maningi ama-electron anganyakaza.

Isimo esijwayelekile siwukuthi uma i-molecule inkulu, amandla amakhulu okuhlakazeka

Nokho, i-PTFE inenkinga.I-Fluorine inamandla kakhulu e-electronegative.Ivamise ukubopha ama-electron kubhondi ye-carbon-fluorine aqinise ndawonye, aqine kangangokuthi ama-electron awakwazi ukunyakaza njengoba ucabanga.Sichaza ibhondi ye-carbon-fluorine njengengenayo i-polarization eqinile

Amandla kaVan der Waals afaka nokusebenzisana kwe-dipole-dipole.Kodwa ku-polytetrafluoroethylene (PTFE), i-molecule ngayinye izungezwe ungqimba lwama-athomu e-fluorine ashajwe kancane kabi.Kulokhu, ukuxhumana okukhona phakathi kwama-molecule ukuxoshana!

Ngakho-ke amandla okuhlakazeka abuthakathaka kunalokho ucabanga, futhi ukusebenzisana kwe-dipole-dipole kuzodala ukuxoshwa.Akumangalisi ukuthi abantu bathi amandla e-van der Waals ku-PTFE abuthakathaka kakhulu.Ngeke empeleni uthole amandla aphikisayo, ngoba ithonya lamandla okuhlakazeka likhulu kunalelo lokusebenzisana kwe-dipole-dipole, kodwa umphumela wenetha ukuthi amandla e-van der Waals azothambekela ekubeni buthakathaka.

Kodwa i-PTFE inezinga eliphakeme kakhulu lokuncibilika, ngakho amandla abambe ama-molecule ndawonye kufanele abe namandla kakhulu.

I-PTFE ingaba kanjani nendawo ephezulu yokuncibilika?

I-PTFE iyikristalu kakhulu, ngalo mqondo kunendawo enkulu, ama-molecule ahlelwe ngendlela evamile.Khumbula, ama-molecule e-PTFE angacatshangwa njengezinduku ezinde.Lezi zigxobo zizohlanganiswa eduze

Lokhu kusho ukuthi nakuba i-molecule ye-ptfe ingakwazi ukukhiqiza ama-dipoles esikhashana amakhulu ngempela, ama-dipole angasetshenziswa kahle kakhulu.

Ngakho ingabe amandla e-van der Waals ku-PTFE abuthakathaka noma anamandla?

Ngicabanga ukuthi nobabili ningalunga!Uma amaketanga e-polytetrafluoroethylene (PTFE) ehlelwe ngendlela yokuthi kungabikho ukuxhumana okuseduze kakhulu phakathi kwamaketanga, amandla phakathi kwawo azoba buthakathaka kakhulu futhi indawo yokuncibilika izoba phansi kakhulu.

Kodwa emhlabeni wangempela, ama-molecule asondelene.Amandla e-Van der Waals angase angabi namandla ngendlela engase abe namandla ngayo, kodwa ukwakheka kwe-PTFE kusho ukuthi bazizwa benomphumela omkhulu kakhulu, ukukhiqiza amabhondi aqinile e-intermolecular kanye namaphuzu aphezulu ancibilika.

Lokhu kuphambene namanye amandla, njengamandla okusebenzisana kwe-dipole-dipole, ancishiswa kuphela izikhathi ze-23, noma kabili ibanga lincishiswa izikhathi ze-8.

Ngakho-ke, ukupakishwa okuqinile kwama-molecule amise okwenduku ku-PTFE kukhulisa ukusebenza kahle kokuhlakazeka.

Izakhiwo ezingezona induku

Yingakho amanzi namafutha enganamatheli ebusweni be-PTFE, futhi kungani ungathosa amaqanda epanini eliboshwe nge-PTFE ngaphandle kokunamathela epanini.

Udinga ukucabangela ukuthi yimaphi amandla angase alungise amanye ama-molecule ebusweni bawoI-PTFE.Kungase kuhlanganise uhlobo oluthile lwesibopho samakhemikhali, i-van der Waals force noma i-hydrogen bond

Ukuhlanganiswa kwamakhemikhali

Ibhondi ye-carbon-fluorine inamandla kakhulu, futhi akunakwenzeka ukuba noma yimaphi amanye ama-molecule afinyelele iketango lekhabhoni ukuze enze noma yikuphi ukusabela kokushintsha kwenzeke.Akunakwenzeka ukuthi kwenzeke isibopho samakhemikhali

van der Waals amabutho

Sibonile ukuthi amandla e-van der Waals ku-PTFE awanamandla kakhulu, futhi azokwenza kuphela i-PTFE ibe nendawo ephezulu yokuncibilika, ngoba ama-molecule asondelene kakhulu kangangokuthi anokuxhumana okusebenzayo kakhulu.

Kodwa kwehlukile kwamanye ama-molecule aseduze nobuso be-PTFE.Ama-molecule amancane uma kuqhathaniswa (njengama-molecule amanzi noma ama-molecule kawoyela) azoba nenani elincane kuphela lokuxhumana nendawo, futhi kuzokwenziwa inani elincane kuphela lokukhanga kwe-van der Waals.

I-molecule enkulu (efana neprotheni) ngeke ibe njengenduku, ngakho-ke akukho ukuxhumana okwanele okusebenzayo phakathi kwayo nendawo ukuze kunqobe ukuthambekela okuphansi kwe-PTFE.

Kunoma ikuphi, amandla e-van der Waals phakathi kobuso be-PTFE nezinto ezizungezile mancane futhi awasebenzi.

Amabhondi e-hydrogen

Ama-molecule e-PTFE angaphezulu asongwe ngokuphelele ngama-athomu e-fluorine.Lawa ma-athomu e-fluorine anamandla kakhulu e-electronegative, ngakho-ke wonke aphethe izinga elithile lokushaja okungekuhle.I-fluorine ngayinye inamapheya ama-3 wama-electron aphuma eyedwa

Lezi yizimo ezidingekayo ukuze kwakhiwe amabhondi e-hydrogen, njengepheya eyodwa ku-fluorine kanye ne-athomu ye-hydrogen emanzini.Kodwa lokhu ngokusobala ngeke kwenzeke, ngaphandle kwalokho kuyoba nokukhanga okunamandla phakathi kwama-molecule e-PTFE nama-molecule amanzi, futhi amanzi azonamathela ku-PTFE.

Isifinyezo

Ayikho indlela esebenzayo yokuthi amanye ama-molecule anamathisele ngempumelelo ebusweni be-PTFE, ngakho-ke inobuso obunganamathele.

Ukungqubuzana okuphansi

I-coefficient of friction ye-PTFE iphansi kakhulu.Lokhu kusho ukuthi uma unobuso obumbozwe nge-ptfe, ezinye izinto zizoshelela kuso kalula.

Ngezansi isifinyezo esisheshayo salokho okwenzekayo.Lokhu kuvela ephepheni lango-1992 elinesihloko esithi "Friction and Wear of Polytetrafluoroethylene".

Ekuqaleni kokushelela, indawo ye-PTFE iyaphuka futhi isisindo sidluliselwe noma yikuphi lapho ishelela khona.Lokhu kusho ukuthi indawo ye-PTFE izogqoka.

Njengoba ukushelela kuqhubeka, amabhlogo avuleka aba amafilimu amancane.

Ngesikhathi esifanayo, ingaphezulu le-PTFE liyakhishwa ukuze kwakhe ungqimba oluhlelekile.

Zombili izindawo ezixhumene nazo manje sezinama-molecule e-PTFE ahleleke kahle akwazi ukuslayidelana.

Okungenhla ukwethulwa kwe-polytetrafluoroethylene, i-polytetrafluoroethylene ingenziwa ibe yimikhiqizo ehlukahlukene, sikhethekile ekwenzeni i-ptfe tube,ptfe hose abakhiqizi, wamukelekile ukuxhumana nathi