Ta hanyar kwatanta aikin PTFE da sauran robobi, wannan labarin ya nuna matsalolin da ake amfani da su a cikin aikace-aikacen PTFE a cikin injiniyar injiniya da kuma gabatar da PTFE da aka gyara da aka cika a cikin raƙuman jagorar zamiya, sassan sassa, hatimi, sassa masu lalata, kayan gini, kayan aikin gona. kayan aiki, da sauran aikace-aikace, da kuma fatan sabbin aikace-aikacen injina.Ta hanyar kwatanta aikin PTFE da sauran robobi, wannan labarin ya nuna matsalolin da ake amfani da su a cikin aikace-aikacen PTFE a cikin injiniyar injiniya da kuma gabatar da PTFE da aka gyara da aka cika a cikin raƙuman jagorar zamiya, sassan sassa, hatimi, sassa masu lalata, kayan gini, kayan aikin gona. kayan aiki, da sauran aikace-aikace, da kuma fatan sabbin aikace-aikacen injina.

Ta hanyar kwatanta aikin PTFE da sauran robobi, wannan labarin ya nuna matsalolin da ke cikin aikace-aikacen PTFE a aikin injiniya na injiniya da kuma gabatar da abubuwan da suka faru.Canje-canje a cikin PTFEcike da ginshiƙan jagorar zamewa, sassan juzu'i, hatimi, sassa masu lalata, kayan gini, kayan aikin noma, da sauran aikace-aikace, da fatan sabbin aikace-aikacen injina.

PTFE resin ya fara samar da shi ne daga masanin kimiyar Amurka Dr. Plunket a cikin 1938, kuma an sami samar da masana'antu a kasashen waje a cikin 1950s.An sanya ƙasara a hukumance a cikin 1960s.PTFE an fi saninsa da “Sarkin Filastik”, kuma ana amfani da shi sosai a fannoni daban-daban don abubuwan da suka dace.Yana yana da high-zazzabi juriya, rashin iskar shaka, inslubility, musamman kyau sinadaran kwanciyar hankali, da kuma musamman dielectric Properties, yin shi daya daga cikin makawa muhimmanci kayan ga kusan duk masana'antu sassa, yafi a cikin sinadaran da inji masana'antu.

1. Jikin kai

Matsakaicin juzu'i na PTFE ya yi ƙasa da sauran robobin injiniya.Ita ce mafi ƙarancin juzu'i mafi ƙasƙanci tsakanin sanannun kayan saman zamiya mai amfani.Yana da madaidaicin kayan shafa mai.

2. Chemical juriya

Saboda PTFE ba shi da nau'i biyu da sarƙoƙi masu rassa a cikin tsarin kwayoyin halitta da haɓakar ƙira, yana da kyakkyawan juriya na sinadarai kuma shine mafi kyau tsakanin sanannun robobin injiniya.Ba ya mu'amala da ma'aunin acid, tsarma acid, alkali mai ƙarfi, da oxidants mai ƙarfi ko da a cikin yanayin zafin jiki.Ba zai lalace ba ko da an tafasa shi, kuma ba shi da wani tasiri da mafi yawan abubuwan kaushi irin su barasa, ko dai da ketones.

3. Ruwan sha

PTFE yana da ƙarancin sha ruwa, wanda yayi daidai da UHMWPE kuma baya kumbura cikin ruwa.

4. Faɗin kewayon high da ƙananan zafin jiki

Ana iya amfani da PTFE ci gaba na dogon lokaci a cikin kewayon 200% zuwa 260%.Ko da a ƙarƙashin ƙananan zafin jiki na 200 ℃, ba ya karye, kuma yana iya kula da wani mataki na sassauci.

5. Ba m

PTFE wani abu ne mai ƙarfi tare da mafi ƙarancin makamashi a halin yanzu.Tashin hankali shine kawai 0.019N/m.Kusan duk ƙaƙƙarfan kayan ba za su iya mannewa saman sa ba.

6. Sanya juriya

Teflon mai tsafta ba shi da juriya sosai, amma ƙari na nau'o'in kayan maye ga Teflon yana inganta juriya sosai, kuma yana da juriya fiye da wasu kayan da aka saba amfani da su azaman sassa na juzu'i (kamar simintin ƙarfe da jan ƙarfe).

7. Tsafta da mara guba

PTFE yana da tsafta kuma ba mai guba ba, ya cika ka'idodin tsabta, kuma yana iya tuntuɓar abinci da magani.

8. Kyakkyawan aikin rufin lantarki

PTFE abu ne mai mahimmanci wanda ba na iyakacin duniya ba tare da kyawawan kaddarorin dielectric, ƙarancin ƙarfinsa shine 25-40KV / mm;juriya yana da girma sosai, kuma ƙayyadaddun ƙayyadaddun juriya har yanzu yana da girma kamar 1061 ~ a 200.

9. Gaba daya ba mai ƙonewa ba

Matsayin narkewa na PTFE shine 327, wanda ya fi sauran polymers gabaɗaya.A 260%, ƙarfin karyewar sa ya kasance 5 MPa (kimanin 1/5 na zafin jiki), kuma ƙarfin sassauƙansa ya kai 1.4 MPa.Yana da matuƙar mahimmancin rashin konewa, ƙarancin iskar oxygen ɗin sa yana sama da 95, ana iya narkar da shi kawai akan harshen wuta, ba a samar da ɗigon ruwa ba, kuma a ƙarshe, kawai carbonized ne.

10.Excellent tsufa juriya da radiation juriya

PTFE ba wai kawai tsayin daka ba ne a ƙananan yanayi da yanayin zafi, amma aikinsa kuma baya canzawa a ƙarƙashin yanayi mai tsauri, kuma ƙwayoyin cuta ba sa kaiwa hari a cikin yanayi mai ɗanɗano, kuma yana da babban kariya daga radiation iri-iri.

11. Sauran kaddarorin

PTFE yana da ƙananan tauri da laushi mai laushi, kuma yana da ikon ɗauka da kuma ƙunshi kayan waje, yana da sauƙin sarrafawa.

1. Manufar da hanyar gyarawa

Kodayake PTFE yana da halaye masu kyau da yawa, yana kuma da gazawa da yawa.Idan aka kwatanta da sauran robobin injiniya, kayan aikin injinsa ba su da kyau sosai;ma'auni na fadada layin layi yana da girma;da gyare-gyaren shrinkage kudi ne babba, kuma na biyu aiki da wuya;taurin yana da ƙasa kuma mai jurewa rashin aikin yi;rashin juriya mai rarrafe, saurin sanyi mai sauƙi;matalauta thermal watsin da kuma mafi girma farashin.Wadannan lahani suna iyakance aikace-aikacensa mai fa'ida zuwa wani iyaka.Manufar gyare-gyaren shine don inganta kayan aikin injiniya;inganta juriya na lalacewa;rage fadada layin layi;inganta ruwa, da dai sauransu.

2. Nau'i da ayyuka na masu gyara filler

Cikawa da gyaggyarawa PTFE tare da fiber gilashi, graphite, molybdenum disulfide, silicon dioxide, aluminum oxide, bronze foda, carbon fiber, da dai sauransu na iya inganta taurin sa, juriya, juriya mai rarrafe, ƙarfin lankwasawa, juriya Cikakken ƙarfi da kwanciyar hankali.Taurin PTFE da aka haɗa ta fiber gilashin ana iya ƙarawa da kashi 10%, kuma ana iya ƙara juriyar lalacewa ta fiye da sau 500.An inganta juriya mai rarrafe da juriya na kwararar sanyi sosai kuma an inganta su;Bugu da ƙari na molybdenum disulfide yana taimakawa Ƙunƙarar da ƙaƙƙarfan kayan PTFE sun inganta, kuma an rage lalacewa na farko;PTFE cike da graphite yana da kyakkyawan juriya na sinadarai, matsawa mai raɗaɗi, da mafi kyawun halayen thermal;PTFE cike da jan karfe foda na iya inganta juriya mai raɗaɗi na kariyar samfuran, ƙarfin ƙarfi, taurin, da kwanciyar hankali.

1. Dogon zamewa

Jagorar zamewa sau da yawa ginshiƙi ne don shigar da kayan aikin yankan ƙarfe, kayan aikin likitanci, da sauran tsare-tsare da na'urori masu yawa, tushen daidaito da tushen sanyawa, ko alamar rayuwar waɗannan injinan, kuma wani muhimmin sashi ne. na mashin.A cikin masana'antar kera kayan aikin injin, yawancin injina kayan aikin jagorar dogo nau'i-nau'i ana jefa baƙin ƙarfe-simintin ƙarfe, simintin ƙarfe mai kashe ƙarfe, simintin ƙarfe-karfe, da sauransu. babba, ba ya jure lalacewa, ba zai iya aiki a ƙarƙashin bushewar gogayya ba, kuma yana rarrafe a ƙananan gudu da ƙananan ƙaura.Wannan rarrafe zai shafi daidaiton abinci da daidaiton kayan aikin injin, musamman madaidaicin kayan aikin injin.Dogara.Lokacin da ake amfani da cikakken jagorar PTFE, ƙarancin saurin kwanciyar hankali na kayan aikin injin yana inganta sosai.Saboda dogo na jagorar filastik yana da sifofin abubuwan da aka binne na waje, za a iya shigar da filayen ƙarfe da yashi a cikin robobin don guje wa lalacewa da tsagewar da kansa, da hana zana da zazzage saman ƙarfen, kuma yana iya kare titin jagorar gado.PTFE dauke da tagulla foda da sauran fillers yana da kyau kwarai gogayya Properties.Bayan an samar da fim ɗin canja wuri a kan saman ƙarfe, ƙimar juzu'i yana raguwa sosai, ƙarfin ɗaukar fim ɗin yana inganta sosai, kuma an ƙara ingantaccen rayuwar aiki.Idan ya dace da jagorar injunan kayan aikin ƙarfe, ƙayyadaddun juzu'in sa ya kasance koyaushe yayin da saurin zamiya ya ƙaru.Saboda haka, irin wannan cikar titin dogo na jagora na PTFE ba zai haifar da al'amura masu rarrafe ba a cikin ƙananan gudu da ƙananan abinci, kuma yana da ɗaukar girgizawa da aikin kwantar da hankali.Matsakaicin juzu'i na layin jagora na PTFE shine 0.05 lokacin bushewar juzu'i, da 0.03 lokacin da aka sami man mai, ba tare da la'akari da ko injin ɗin jagorar dogo yana da mai mai ko a'a ba, motsinsa yana da santsi kamar yadda zai yiwu.Lokacin da ake buƙatar gyara hanyar dogo na jagorar PTFE bayan an sawa, aikin kulawa yana da matukar fa'ida kuma ana iya musanya shi.Yana da sauƙi don kula da daidaiton girma.Musamman lokacin da layin dogo ya lalace kuma yana buƙatar gyara, yana da fa'ida a yi amfani da filastik don gyaran gida.

2. Yankunan juzu'i

Akwai ɓangarorin juzu'in PTFE da yawa waɗanda aka saba amfani da su a cikin injiniyan injiniya, gami da bearings, zoben piston, da gears.PTFE abu ne mai mahimmanci don zoben piston kuma ana amfani dashi ko'ina a cikin kwamfurori na iska da masu ruwa da ruwa.Zoben fistan PTFE yana aiki azaman zoben matsawa don toshe ruwaye ko gas.Yawanci ana amfani da shi a cikin yanayi inda ba za a iya amfani da man shafawa ko wasu yanayi masu tsauri ba, kamar lalata mai tsanani da buƙatun aminci mai girma, na iya rage lalacewa da maimaita gungu na bangon ciki na Silinda Yawan ramuka yana ƙara rayuwar sabis na silinda.Misali, akwai guduma mai tururi ta tebur, wadda tun asali tana amfani da zoben karfe.A lokacin samar da motsi na biyu, a ƙarƙashin yanayi na al'ada, bangon ciki na silinda yana sawa har zuwa 7-9ram bayan rabin shekara, zoben karfe yana girgiza har tsawon makonni 2 zuwa 3, kuma wani lokacin yana iya karya.Zoben fistan ya matse bangon ciki na silinda kuma dole ne a canza silinda.Lokacin amfani da PTFE da aka cika tsawon wata ɗaya, bangon ciki na Silinda yana ɗaukar 2mm kawai, kuma bayan watanni 10, lalacewa shine kawai 3mm, kuma ana ƙara rayuwa ta sau 4 zuwa 5 ko ma ya fi tsayi.Kusan duk zoben piston suna taka rawa wajen daidaita motsi kuma suna farawa akai-akai, don haka ana buƙatar madaidaicin juzu'i ya zama ƙarami.Ƙarƙashin ƙananan kaya, madaidaicin juzu'i na PTFE shine 25% zuwa 75% ƙasa da zoben piston na sauran kayan.Mafi girman kaya, mafi kyawun fifikonsa.Wannan yana da fifiko mara misaltuwa a cikin haske farawa da madaidaicin haske.Sakamakon ya rage yawan amfani da makamashi, rage girgiza, da hayaniya, wanda ya dace da kare muhalli.A lokaci guda, ana iya amfani da PTFE azaman gears da bearings don watsa motsi da abubuwan watsa wutar lantarki a cikin yanayin yanayin aiki da yawa da yanayi mai tsauri don yadi mai haske, bugu da rini, yin takarda, da masana'antar abinci.

3. Hatimi

Yin amfani da fim ɗin PTFE da aka haɗa a saman kayan rufewar roba na iya inganta juriya mai ƙarfi da juriya na kafofin watsa labarai na hatimin roba, kuma farashin yana da ƙasa kaɗan.An yi amfani da shi a cikin buƙatun rufewa na lokuta daban-daban masu tsanani.Cikakkun kayan rufewa na FE yana da kyakkyawan juriya mai ƙarfi da ƙarancin zafin jiki kuma a halin yanzu shine babban madadin maye gurbin kayan asbestos na gargajiya.Carbon fiber-ƙarfafaFarashin PTFEabu yana da halaye na babban ƙarfi, high modules, gajiya juriya, creep juriya, high thermal conductivity, low coefficient na thermal fadada, da gogayya.Waɗannan cikakkun kaddarorin ba su dace da kowane nau'in kayan rufewa ba kuma sun dace da kayan aikin rufewa.

4. Anti-lalata sassa

Gyaran PTFE yana da kwanciyar hankali mai kyau ga acid, alkali, kafofin watsa labarai na lalata gishiri, kuma yana iya maye gurbin yumbu na ƙarfe don injiniyan lalata, musamman dacewa da yanayin zafi mai ƙarfi da lokatai masu ƙarfi, kamar kayan aikin rigakafin lalata, bututu, da kayan aiki a cikin shuke-shuken sinadarai. .Kayayyakin gogayya masu lalata, bawul, famfo, masu musayar zafi, faranti mai ƙyalli, da kayan tacewa don watsa labarai masu lalata sosai, rufi, da lulluɓin kayan aikin sinadarai.

5. Kayan lantarki

An yi amfani da PTFE da aka gyara don ko'ina azaman insulating Layer don sandunan waya, bututu, da kaset ɗin albarkatun kasa.Hakanan ana amfani da ita azaman insulator don kwasfa daban-daban, goyan baya, kayan aikin microwave masu tsayi, da na'urorin lantarki don masana'antar lantarki.

6. Kayan gini

Gilashin zane mai ciki da PTFE watsawa ne mai kyau membrane tsarin ginin abu.Yana da ingantaccen watsa haske, wanda zai iya rage farashin hasken wuta da kwandishan.Dorewa yana da fiye da shekaru 20.Zai iya rage farashin zane da tsaftacewa.Za a iya taqaitaccen lokacin gini don manyan rufin firam.50%, zai iya rage farashin kayan rufin da 50% kuma jimlar farashin gini ta 20%.Sabili da haka, ya dace da kayan rufi na kotuna na waje, fage, filayen wasa, wuraren motsa jiki, wuraren shakatawa, manyan nune-nunen nune-nunen, gidajen namun daji da lambunan tsirrai, tashoshin sufuri, da sauransu.

7. Man shafawa Additives

Karkashin yanayin lubrication na iyaka, hanya mafi inganci don rage daidaituwar juzu'i ita ce zabar abubuwan da suka dace da mai, daInjin foda PTFEƙari ne mai ƙarfi da aka saba amfani da shi.Gwaje-gwaje sun nuna cewa ƙara wani takamaiman adadin abubuwan daɗaɗɗen abubuwan da ake ƙarawa a cikin man injin zai iya ceton kusan kashi 5% na man fetur ɗin injin.

8. Kayan aikin noma

Yin amfani da kaddarorin mai mai da kai, mai ƙarfi da lalacewa na cike PTFE, ana iya yin shi da yawa cikin rufin farantin karfe, guga mai hakowa, da layin ciki na sashin juji, da sauransu, don haɓaka inganci da kwanciyar hankali. na jigilar kayayyaki.

9. Kayan yau da kullun

A PTFE-rufi ironworking surface ne duka lalacewa-resistant kuma yana da low gogayya juriya;PTFE mai rufaffiyar wok da dafaffen shinkafa suna da halaye na abincin da ba na sanda ba;an ɗaure ruwa ko an lulluɓe shi da aFim PTFE, kuma ruwan wukake yana da ƙarfi Lokacin da kunci ya motsa, juriya yana da ƙarami akan fata da taushi.

10. Haɓaka sabbin aikace-aikacen injiniyoyi

Baya ga aikace-aikace da sakamakon bincike naInjin PTFEmasana'antu, la'akari da duka abu yi da kuma tsarin, PTFE yana da m al'amurra a cikin inji masana'antu na mota masana'antu, na al'ada makamai, jiragen ruwa, Aerospace, da atomic makamashi, magani, muhalli kariya, da dai sauransu.