Ngokuqhathanisa ukusebenza kwe-PTFE namanye amapulasitiki, lesi sihloko sikhomba izinkinga ekusetshenzisweni kwe-PTFE kubunjiniyela bemishini futhi sethula i-PTFE eguquliwe egcwele ama-sliding guide rails, izingxenye zokungqubuzana, izimpawu, izingxenye ezilwa nokugqwala, izinto zokwakha, imishini yezolimo. izinto zokwakha, nezinye izinhlelo zokusebenza, kanye namathemba okufakwa kwemishini emisha.Ngokuqhathanisa ukusebenza kwe-PTFE namanye amapulasitiki, lesi sihloko sikhomba izinkinga ekusetshenzisweni kwe-PTFE kubunjiniyela bemishini futhi sethula i-PTFE eguquliwe egcwele ama-sliding guide rails, izingxenye zokungqubuzana, izimpawu, izingxenye ezilwa nokugqwala, izinto zokwakha, imishini yezolimo. izinto zokwakha, nezinye izinhlelo zokusebenza, kanye namathemba okufakwa kwemishini emisha.

Ngokuqhathanisa ukusebenza kwe-PTFE namanye amapulasitiki, lesi sihloko sikhomba izinkinga ekusetshenzisweni kwe-PTFE kubunjiniyela bemishini futhi sethulai-PTFE eshintshiweagcwaliswe ngomzila weziqondiso ezishelelayo, izingxenye ezishayisanayo, ama-seal, izingxenye ezinqanda ukugqwala, izinto zokwakha, izinto zemishini yezolimo, nezinye izinto ezisetshenziswayo, kanye namathemba okufakwa kwemishini emisha.

I-PTFE resin yasungulwa okokuqala ngusokhemisi waseMelika uDkt. Plunket ngo-1938, futhi ukukhiqizwa kwezimboni kwafinyelelwa phesheya ngawo-1950.izwe lami lafakwa ngokusemthethweni ekukhiqizweni ngeminyaka yawo-1960.I-PTFE ivamise ukwaziwa ngele-“King of Plastics”, futhi isetshenziswa kabanzi ezicini ezehlukene ngezakhiwo zayo ezihlukile.Inokumelana nezinga lokushisa eliphezulu, i-non-oxidation, i-insolubility, ikakhulukazi ukuzinza okuhle kwamakhemikhali, kanye nezakhiwo ezinhle kakhulu ze-dielectric, okuyenza ibe enye yezinto ezibalulekile ezibalulekile cishe kuyo yonke imikhakha yezimboni ikakhulukazi ezimbonini zamakhemikhali nezemishini.

1. Ukuzithambisa

I-coefficient yokungqubuzana ye-PTFE incane kunamanye amapulasitiki obunjiniyela.I-coefficient ephansi kakhulu yokungqubuzana phakathi kwezinto ezisebenzayo ezisezingeni eliphezulu ezishelelayo.Kuyinto ekahle yokugcoba.

2. Ukumelana namakhemikhali

Ngenxa yokuthi i-PTFE ayinawo amabhondi aphindwe kabili namaketanga anamagatsha esakhiweni sayo samangqamuzana nokucwebezela okuphezulu, inokumelana namakhemikhali okuhle kakhulu futhi ingcono kakhulu phakathi kwamapulasitiki obunjiniyela aziwayo.Ayihlangani nama-asidi agxilile, ama-asidi acwebileyo, ama-alkali agxilile, nama-oxidants aqinile ngisho nasezindaweni ezinezinga lokushisa eliphezulu.Ngeke igqwale ngisho noma ibilisiwe, futhi ayinamthelela kuma-solvents amaningi njengotshwala, kanye nama-ketones.

3. Ukumuncwa kwamanzi

I-PTFE inezinga eliphansi kakhulu lokumunca amanzi, elilingana ne-UHMWPE futhi ayivuvukali emanzini.

4. Ibanga elibanzi lokushisa eliphezulu neliphansi

I-PTFE ingasetshenziswa ngokuqhubekayo isikhathi eside phakathi kwebanga lama-200% kuya ku-260%.Ngisho nangaphansi kwezinga lokushisa eliphansi elingu-200 ℃, alinamali, futhi lingakwazi ukugcina izinga elithile lokuguquguquka.

5. Ayinamatheli

I-PTFE iyinto eqinile enamandla angaphezulu kwamancane njengamanje.Ingcindezi ebusweni ingu-0.019N/m kuphela.Cishe zonke izinto eziqinile azikwazi ukunamathela ebusweni bayo.

6. Ukumelana nokugqoka

I-Teflon ehlanzekile ayizweli kakhulu ukuguga, kodwa ukungezwa kwezigcwalisi ezihlukahlukene ku-Teflon kuthuthukisa ukumelana nokugqokwa ngokuphawulekayo, futhi imelana kakhulu kunezinye izinto ezivame ukusetshenziswa njengezingxenye zokungqubuzana (njengensimbi ekhonjiwe nethusi).

7. Ihlanzekile futhi ayinabuthi

I-PTFE ihlanzekile futhi ayinabo ubuthi, ihlangabezana nezindinganiso zokuhlanzeka, futhi ingathinta ukudla nemithi.

8. Ukusebenza okuhle kakhulu kokufakwa kukagesi

I-PTFE iyimpahla engeyona i-polar enezici ezinhle kakhulu ze-dielectric, i-voltage yayo yokuwohloka ingu-25-40KV/mm;ukumelana kukhulu ngokwedlulele, futhi ukumelana nevolumu ethile kusephezulu njenge-1061 ~ ku-200.

9. Ayishi ngokuphelele

Iphuzu elincibilikayo le-PTFE lingu-327, eliphakeme kunamanye ama-polymer ajwayelekile.Ku-260%, amandla ayo okuphuka ahlala e-5 MPa (cishe i-1/5 yezinga lokushisa legumbi), futhi amandla ayo okuguquguquka afinyelela ku-1.4 MPa.Inokungashisi okubaluleke kakhulu, inkomba yayo ye-oxygen elinganiselwe ingaphezu kwama-95, ingancibilika kuphela emlilweni, awekho amaconsi akhiwe, futhi ekugcineni, i-carbonized kuphela.

10.Ukumelana nokuguga okuhle kakhulu nokumelana nemisebe

I-PTFE ayigcini nje ngokuzinza ngokulinganayo emazingeni okushisa aphansi naphezulu, kodwa ukusebenza kwayo futhi akushintshile ngaphansi kwezindawo ezinokhahlo, futhi ayihlaselwa amagciwane asesimweni esiswakeme, futhi inokuvikelwa okuphezulu emisebeni ehlukahlukene.

11. Ezinye izakhiwo

I-PTFE inobulukhuni obuphansi nokuthungwa okuthambile, futhi inamandla okumunca futhi iqukethe izinto zangaphandle, kulula ukuyicubungula.

1. Inhloso kanye nendlela yokuguqulwa

Nakuba i-PTFE inezici eziningi ezinhle kakhulu, futhi inokushiyeka okuningi.Uma kuqhathaniswa namanye amapulasitiki obunjiniyela, izakhiwo zawo zemishini azilungile kakhulu;i-coefficient yokunwetshwa komugqa inkulu;izinga lokuncipha kokubumba likhulu, futhi ukucubungula kwesibili kunzima;ubulukhuni buphansi futhi bukwazi ukumelana nokusebenza okungalungile;ukumelana nokukhasa okumpofu, ukugeleza okubandayo okulula;ukungasebenzi kahle kwe-thermal kanye namanani aphezulu.Lezi ziphambeko zikhawulela ukusetshenziswa kwayo okubanzi ngezinga elithile.Inhloso yokuguqulwa ukuthuthukisa izakhiwo zemishini;thuthukisa ukumelana nokugqoka;ukunciphisa ukunwetshwa komugqa;thuthukisa i-fluidity, njll.

2. Izinhlobo nemisebenzi yezilungisi zokugcwalisa

Ukugcwalisa nokuguqula i-PTFE nge-glass fiber, i-graphite, i-molybdenum disulfide, i-silicon dioxide, i-aluminium oxide, i-bronze powder, i-carbon fiber, njll.Ubulukhuni be-PTFE obuhlanganiswe ne-glass fiber ngokuvamile bungakhuphuka ngo-10%, futhi ukumelana nokugqokwa kungakhuphuka izikhathi ezingaphezu kuka-500.Ukumelana nokukhasa kanye nokumelana nokugeleza okubandayo kuthuthukiswa kakhulu futhi kuthuthukisiwe;ukungezwa kwe-molybdenum disulfide kusiza Ukuqina nokuqina kwemikhiqizo ye-PTFE kuyathuthukiswa, futhi ukugqokwa kokuqala kuyancipha;I-PTFE egcwele i-graphite inokumelana okuhle kakhulu kwamakhemikhali, i-compression creep, kanye ne-conductivity engcono yokushisa;I-PTFE egcwele impushana yethusi ingathuthukisa ukumelana nokuvikela kwemikhiqizo, amandla aphelele, ubulukhuni, nokuzinza kwe-dimensional.

1. Shelelisela umzila wesitimela

Iziqondiso ezishelelayo zivame ukuba yisisekelo sokufakwa kwamathuluzi omshini wokusika insimbi, amathuluzi ezokwelapha, nezinye izinhlelo namadivayisi amaningi, isisekelo sokunemba kanye nesisekelo sokuma, noma isibonakaliso sempilo yale mishini, futhi kuyingxenye ebalulekile. yomshini.Embonini yokukhiqiza amathuluzi omshini, amapheya amaningi wesitimela amathuluzi omshini ayinsimbi esakazwa ngensimbi, insimbi ecijile, insimbi ecinywe ngensimbi, njll. Nokho, ngenxa yezakhiwo zayo ezibonakalayo, i-coefficient yokungqubuzana phakathi kwezinsimbi inkulu, ayimelani nokuguga, ayikwazi ukusebenza ngaphansi kokungqubuzana okomile, futhi ikhasa ngesivinini esiphansi kanye nokugudluka okuncane.Lokhu kukhasa kuzothinta ukunemba kokuphakelayo nokunemba kwamathuluzi omshini, ikakhulukazi amathuluzi omshini wokunemba.Ukwethembeka.Uma kusetshenziswa umhlahlandlela we-PTFE ogcwalisiwe, ukuzinza kwesivinini esiphansi sethuluzi lomshini kuba ngcono kakhulu.Ngenxa yokuthi umzila wesitimela wepulasitiki unezici zezinto zangaphandle ezingcwatshwe, izinsimbi zensimbi kanye nezinhlayiya zesihlabathi zingafakwa epulasitiki ukuze zigweme ukuguga kwayo, ukuvimbela ukudweba nokunwaya kwendawo yensimbi, futhi kungavikela isitimela somhlahlandlela wombhede.I-PTFE equkethe impushana yethusi nezinye izigcwalisi inezinto ezinhle kakhulu zokungqubuzana.Ngemuva kokuthi ifilimu yokudlulisa yenziwe endaweni yensimbi, i-coefficient ye-friction iyancipha kakhulu, umthamo wokuthwala wefilimu yokudlulisa uthuthukiswa kakhulu, futhi impilo yokusebenza ephumelelayo nayo iyanwetshwa.Uma ifaniswe negayidi yethuluzi lomshini wensimbi, i-coefficient yayo yokungqubuzana ihlala injalo njengoba isivinini sokuslayida sikhula.Ngakho-ke, lolu hlobo lomzila wesitimela we-PTFE ogcwele ngeke ukhiqize izenzakalo ezikhasayo ngesivinini esiphansi kanye nokuphakelayo okuncane, futhi unokumuncwa kokudlidliza nokusebenza kokuguquguquka.I-friction coefficient ye-PTFE guide rail ingu-0.05 uma ukungqubuzana okomile, kanye no-0.03 uma kukhona ukugcotshwa kukawoyela, kungakhathaliseki ukuthi ujantshi wethuluzi lomshini unamafutha okugcoba noma cha, ukunyakaza kwawo komsebenzi kushelela ngangokunokwenzeka.Lapho ujantshi womhlahlandlela we-PTFE udinga ukulungiswa ngemuva kokugqokwa, umsebenzi wokuwunakekela usindisa abasebenzi kakhulu futhi ungashintshwa.Kulula ukugcina ukunemba kwe-dimensional.Ikakhulukazi lapho isitimela esiqondisayo sonakalisiwe futhi sidinga ukulungiswa, kungcono kakhulu ukusebenzisa ipulasitiki ukulungisa indawo.

2. Izingxenye zokungqubuzana

Kunezingxenye eziningi zokungqubuzana kwe-PTFE ezivame ukusetshenziswa kubunjiniyela bemishini, okuhlanganisa amabheringi, amaringi episton, namagiya.I-PTFE iyinto efanelekile yamasongo e-piston futhi isetshenziswa kabanzi kuma-compressor komoya nama-compressor amanzi.I-PTFE piston ring isebenza njengendandatho yokucindezela ukuvimba uketshezi noma amagesi.Kuvame ukusetshenziswa ezimweni lapho amafutha noma ezinye izimo ezinzima zingeke zisetshenziswe, njengokugqwala okukhulu kanye nezidingo zokuphepha eziphezulu, kunganciphisa kakhulu ukugqoka nokuphindaphindiwe kodonga lwangaphakathi lwesilinda Inombolo yezimbobo kwandisa impilo yesevisi ye-cylinder.Isibonelo, kunesando se-steam sedeskithophu, esasebenzisa indandatho yensimbi ekuqaleni.Ngesikhathi sokukhiqizwa kweshifu yesibili, ngaphansi kwezimo ezijwayelekile, udonga lwangaphakathi lwesilinda lugqoka kuze kufike ku-7-9ram ngemva kwesigamu sonyaka, indandatho yensimbi inyakaziswa amaviki angu-2 kuya kwangu-3, ​​futhi ngezinye izikhathi ingase iphule.Indandatho yepiston yavala udonga lwangaphakathi lwesilinda futhi isilinda kwadingeka ukuthi kushintshwe.Uma usebenzisa i-PTFE egcwele inyanga, udonga lwangaphakathi lwesilinda lugqoka okungu-2mm kuphela, futhi ngemva kwezinyanga ezingu-10, ukugqokwa kungu-3mm kuphela, futhi ukuphila kunwetshwa izikhathi ezi-4 kuye kwezingu-5 noma ngisho nangaphezulu.Cishe wonke amaringi e-piston adlala indima yokuvala ekunyakazeni okuphindaphindayo futhi aqale njalo, ngakho-ke i-coefficient ye-static friction iyadingeka ukuthi ibe mncane.Ngaphansi kwemithwalo emincane, i-static friction coefficient ye-PTFE ingaphansi ngo-25% kuya ku-75% kunamasongo e-piston kwezinye izinto.Uma umthwalo umkhulu, ngcono ukuphakama kwawo.Lokhu kunokuphakama okungenakuqhathaniswa ekukhanyeni kokuqala kanye nokukhanya okuphindaphindayo.Umphumela uba ukunciphisa ukusetshenziswa kwamandla, ukunciphisa ukudlidliza, nomsindo, osiza ekuvikelweni kwemvelo.Ngesikhathi esifanayo, i-PTFE ingasetshenziswa njengamagiya namabheringi okuhambisa ukunyakaza kanye nezingxenye zokudlulisa amandla ezinhlobonhlobo zezimo zokusebenza kanye nendawo enzima kakhulu yezindwangu ezikhanyayo, ukuphrinta nokudaya, ukwenza amaphepha, nezimboni zokudla.

3. Izimpawu

Ukusetshenziswa kwefilimu ye-PTFE ehlanganiswe phezu kwezinto zokuvala zenjoloba kungathuthukisa ukumelana ne-solvent kanye nokumelana nemidiya ye-rubber seal, futhi intengo iphansi kakhulu.Isetshenziswe ezidingweni zokuvalwa kwezikhathi ezihlukahlukene ezinzima.Impahla yokuvala ye-FE egcwalisiwe inokumelana okuhle kakhulu nezinga lokushisa eliphezulu eliphezulu neliphansi futhi njengamanje iyindawo eyinhloko yokuthatha indawo yezinto zendabuko ze-asbestos gasket.I-carbon fiber-reinforcedPTFE uphawuimpahla inezici zamandla aphezulu, i-modulus ephezulu, ukumelana nokukhathala, ukumelana nokukhasa, ukuhanjiswa okuphezulu kwe-thermal, i-coefficient ephansi yokwanda okushisayo, nokungqubuzana.Lezi zakhiwo ezibanzi azifani nanoma yiluphi uhlobo lwezinto zokuvala futhi ziyizinto ezisezingeni eliphezulu zokuvala uphawu.

4. Izingxenye zokulwa nokugqwala

I-PTFE eguquliwe inokuqina okuhle kwamakhemikhali ku-asidi, i-alkali, imidiya yokugqwala kukasawoti, futhi ingathatha indawo yobumba bensimbi yobunjiniyela bokulwa nokugqwala, efaneleka kakhulu izinga lokushisa eliphezulu nezikhathi zokugqwala okuqinile, njengemishini yokunqanda ukugqwala, amapayipi, nokufakwa ezitshalweni zamakhemikhali. .Izinto ezisetshenziswayo zokurhwebelana, amavalvu, amaphampu, izinto ezishintsha ukushisa, amapuleti ambobozekile, nezinto zokuhlunga zemidiya egqwala kakhulu, ulwelwesi, kanye nokunameka okokusebenza kwamakhemikhali.

5. Ukufakwa kukagesi

I-PTFE eguquliwe isetshenziswa kabanzi njengongqimba oluvikelayo lwezintambo zocingo, amashubhu, namateyipu wempahla eluhlaza.Ibuye isetshenziswe njengesivikeli sesokhethi ehlukahlukene, izisekelo, imishini ye-microwave esezingeni eliphezulu, nama-electrode embonini ye-electrochemical.

6. Izinto zokwakha

Indwangu yengilazi efakwe i-PTFE dispersion iyinto enhle kakhulu yokwakha isakhiwo se-membrane.Inokudlulisa ukukhanya okuhle kakhulu, okunganciphisa izindleko zokukhanyisa kanye ne-air conditioning.Ukuqina kungaphezu kweminyaka engama-20.Kunganciphisa izindleko zokudweba nokuhlanza.Isikhathi sokwakhiwa kophahla olukhulu lwefreyimu singafinyezwa.I-50%, inganciphisa izindleko zempahla yophahla ngo-50% kanye nesamba sezindleko zokwakha ngama-20%.Ngakho-ke, ifanele izinto zokufulela zezinkantolo zangaphandle, izinkundla, izinkundla, ama-skating rinks, amachibi okubhukuda, imibukiso emikhulu, ama-zoo nezingadi zezitshalo, iziteshi zokuhamba, njll.

7. Izithasiselo zokuthambisa

Ngaphansi kwezimo zokugcoba umngcele, indlela ephumelela kakhulu yokunciphisa i-coefficient of friction ukukhetha izithasiselo zokugcoba ezifanele, kanyePTFE powder umshiniiyisengezo esiqinile esivame ukusetshenziswa.Ukuhlola kubonisa ukuthi ukwengeza inani elithile lezithako eziqinile kuwoyela wenjini kungasindisa ngempumelelo cishe u-5% kawoyela wenjini.

8. Izimpahla zemishini yezolimo

Isebenzisa izinto ezizigcobayo, ezinamathelayo nezingagqoki ze-PTFE egcwele, ingenziwa kabanzi ibe umugqa wamapuleti kagandaganda, ibhakede lokumba, kanye nolayini wangaphakathi wendawo yokulahla amaloli, njll., ukuze kuthuthukiswe ukusebenza kahle nokuzinza. yezinto zokudlulisa.

9. Izinto zansuku zonke

I-PTFE-coated ironworking surface kokubili ayigugi futhi inokumelana nokushwibeka okuphansi;i-PTFE-coated wok kanye ne-rice cooker inezici zokudla okungeyona induku;i-blade iboshwe noma ifakwe nge-aIfilimu ye-PTFE, futhi i-blade iqinile Lapho izihlathi zihamba, ukumelana kuncane kokubili esikhumbeni futhi kuthambile.

10. Ukuthuthukiswa kwezicelo zemishini emisha

Ngaphezu kwesicelo kanye nemiphumela yocwaningo lweImishini ye-PTFEimboni, uma kucatshangelwa kokubili ukusebenza nokwakheka kwezinto ezibonakalayo, i-PTFE inamathemba abanzi embonini yemishini yemboni yezimoto, izikhali ezivamile, imikhumbi, i-aerospace, namandla e-athomu, imithi, ukuvikelwa kwemvelo, njll.