Polytetrafluoroethylene, ko PTFE, abu ne na yau da kullun da ake amfani dashi a kusan kowane manyan masana'antu.Wannan ultra-lubricious da Multi-amfani fluoropolymer ya shafi kowa da kowa daga sararin samaniya da masana'antu na kera (a matsayin murfin rufewa akan cabling) zuwa kayan aikin kida (ana samunsa a cikin tagulla mai bawul da kayan kidan itace don amfani akan sassan motsinsu).Wataƙila sanannen amfaninsa ana amfani dashi azaman ƙasa mara sanda a kan tukwane da kwanon rufi.Ana iya kafa PTFE a cikin sassan da aka ƙera;ana amfani da su azaman sassauƙan haɗin gwiwar bututu, jikunan bawul, insulators na lantarki, bearings, da gears;kuma extruded kamar tubing.
Matsanancin juriya na sinadarai da rashin kuzarin sinadarai, da kuma kaddarorin masu nauyi amma masu ƙarfi na PTFE, suna sa ya sami fa'ida sosai a masana'anta da amfani da na'urorin likitanci.Saboda ƙarancin juzu'in sa na ban mamaki (wanda ita ce hanyar lissafi ta faɗin cewa saman yana da ban mamaki sosai),Farashin PTFEana iya amfani da su don canja wurin sinadarai masu tsauri ko kayan aikin likitanci waɗanda tsabtarsu ke buƙatar kiyayewa kuma suna buƙatar shigar da lafiya cikin jiki yayin tiyata.PTFE tubing yana da lubricious, juriya da bakin ciki wanda ya dace da ID na jagorar catheter (cikin diamita) inda kayan aiki kamar stent, balloons, atherectomy, ko angioplasty na'urorin suna buƙatar zamewa ta hanyar yardar kaina ba tare da barazanar snags ko toshewa ba.Domin babu wani abu da ke manne da wannan kayan, kuma yana iya tsoma baki tare da ikon ƙwayoyin cuta da sauran masu yaduwa don bin bututu da haifar da cututtukan da aka samu a asibiti.
Duk waɗannan halayen ban mamaki na PTFE suna nufin cewa kusan koyaushe yana haɗawa da wani abu dabam.Idan ana amfani da shi azaman sutura, azaman gasket ɗin rufewa, ko azaman tubing tare da jaket na Pebax da ferrules na haɗin filastik, yana yiwuwa yana buƙatar manne wa wani abu.Wataƙila kun lura da abin da muka riga muka faɗa: babu abin da ke manne da PTFE.Kaddarorin da ke sa wannan kayan ya zama abin sha'awa ga kamfanonin na'urorin likitanci suma suna haifar da ƙalubalen masana'anta yayin haɓaka samfuri da samarwa.Samun sutura, elastomers, da sauran abubuwan haɗin na'urar don manne wa PTFE yana da ƙalubale mai ban mamaki kuma yana buƙatar tsauraran sarrafawar tsari.
Don haka, ta yaya masana'antun ke sa wannan abu da ake amfani da shi a ko'ina, wanda ba za a iya haɗa shi ba?Kuma ta yaya za su san an bi da shi ko kuma an shirya shi yadda ya kamata kuma a zahiri a shirye yake don haɗawa ko sutura?
Muhimmancin Etching PTFE
Don bayyana dalilin da yasa ake buƙatar etching sinadarai, ya zama dole a fahimci abin da ke haifar da rashin haɗin kai na PTFE.PTFE yana kunshe ne da sarkar sinadarai masu tsayayye, wanda ke sa shi da wahala ya hada shi da wani abu, ko da a takaice.
Tunda PTFE ba ta da sinadarai, ma'ana saman baya amsawa da duk wani nau'in sinadari da ya hadu da su, ko dai wadanda ke cikin iska ko wadanda ke saman wasu kayan, sai a gyara samansa da sinadarai domin ya makala a cabling. karafa, ko tubing ana shafa shi.
Duk mannewa wani tsari ne na sinadari wanda saman 1-5 kwayoyin yadudduka na saman ke hulɗa tare da sinadarai da ke cikin saman 1-5 kwayoyin yadudduka na kowane saman da ake amfani da shi.Sabili da haka, saman PTFE yana buƙatar a sanya shi ta hanyar sinadarai sabanin inert na sinadarai don haɗawa cikin nasara.A cikin Kimiyyar Materials, saman da ke da kuzari sosai kuma yana marmarin haɗawa da wasu kwayoyin halitta ana kiransa “safin makamashi mai ƙarfi.”Don haka PTFE yana buƙatar ɗaukar shi daga yanayin "ƙananan makamashi", wanda shine yanayin tushen sa, zuwa "high energy," inganci mai ɗaurewa.
Akwai ƴan hanyoyin yin wannan, ciki har da vacuum plasma treatment, kuma akwai wasu da suka ce za su iya cimma wani bondable surface a kan PTFE ta sanding, abrading, ko amfani da al'ada da aka tsara don PVC ko polyolefins.Duk da haka, hanyar da aka fi sani kuma mafi inganci a kimiyyance ita ce tsari da ake kira etching chemical.
Etching yana karya wasu abubuwan haɗin carbon-fluorine na PTFE (wanda ya ƙunshi dukkanin fluoropolymers), a sakamakon haka, yana canza halayen sinadarai na yanki, ɗaukar shi daga wani wuri marar amfani zuwa wanda ke aiki kuma yana iya yin hulɗa tare da wasu abubuwa. .Samuwar da aka samu ba ta da man shafawa amma a yanzu ita ce saman da za a iya mannawa, a yi ta, ko kuma a haxe ta da wasu kayan, da kuma ba da damar a buga shi ko a zana shi.
Ana yin etching ta hanyar sanya PTFE a cikin maganin sodium, kamar Tetra Etch da aka saba amfani da shi.Sakamakon sinadarai da aka samu tare da saman yana cire ƙwayoyin fluorine daga kashin bayan carbon-fluorine na fluoropolymer yana barin carbon atom waɗanda ke da ƙarancin electrons.Fuskar da aka yi da ita tana da kuzari sosai, kuma idan aka fallasa ta zuwa iska, ana barin kwayoyin oxygen, tururin ruwa, da hydrogen su tashi a ciki don maye gurbin kwayoyin fluorine, suna ba da damar dawo da electrons.Wannan tsarin maidowa yana haifar da fim mai ɗaukar hoto na ƙwayoyin cuta a saman wanda ke ba da damar mannewa.
Ɗaya daga cikin manyan abubuwa game da etching sinadarai shi ne cewa yana iya canza kawai saman ƴan yadudduka na ƙwayoyin cuta kuma ya bar sauran PTFE tare da duk abubuwan musamman nasa.
Yadda Ake Tabbatar Da Daidaituwar Tsarin Tsarin Etch.
Mahimman kaddarorin PTFE sun kasance iri ɗaya tun da etching sinadarai kawai yana shafar ƴan yadudduka na kwayoyin halitta.Duk da haka, ana iya samun launin ruwan kasa ko launin toka a cikin tubing.Bambance-bambancen launi ba ya da alaƙa da yadda fuskar ke da alaƙa, don haka kar a yi amfani da wannan canza launin a matsayin ainihin alamar yadda PTFE ɗin ke da kyau.
Hanya mafi kyau don sanin cewa etching ɗinku ya haifar da irin yanayin da kuke ciki shine amfani da hanyar da duk ƙwararrun etchers ke amfani da su: ma'aunin ma'aunin lamba na ruwa.Ana yin wannan dabara ta hanyar saka digon ruwa mai tsafta sosai akan PTFE da auna yadda digon ruwan ke aiki.Dan kankanin digon zai ko dai ya tashi saboda ya fi sha'awar kansa fiye da PTFE, ko kuma zai "jika" kuma ya daidaita a saman saboda yana sha'awar PTFE.Gabaɗaya magana, mafi yawan nasara da etch na sinadarai - ƙananan kusurwar lamba (, mafi girman digo) zai kasance.Ana kiran wannan sau da yawa a matsayin gwada "wettability" na saman saboda, da gaske, idan saman ya yi kyau sosai kuma ɗigon ruwa ya bazu, yawancin saman yana yin jika.
Hotona samayana nuna ra'ayi na sama zuwa ƙasa na digo na ruwa (a cikin ƙaramin zoben rawaya da shuɗi) akan bututun PTFE kafin a ɗaure shi. Kamar yadda kake gani, gefen digon yana yin kusurwa 95-digiri tare da saman saman. tube.
Hoton da ke sama yana nuna irin wannan digo na ruwa da aka ajiye akan bututun PTFE bayan an yi shi.Kuna iya faɗi cewa digo ya bazu a saman bututun saboda zoben rawaya da shuɗi ya fi girma.Wannan yana nufin cewa gefen digo yana ƙirƙirar ƙananan kusurwar lamba tare da saman tubing.Kuma idan aka auna wannan kusurwa da na'urar Analyst na Surface, wacce aka ɗauko waɗannan hotuna biyu daga ciki, za mu ga cewa, i, kusurwar tana da digiri 38.Idan hakan ya dace da ƙayyadaddun buƙatunmu na lambar da muke buƙatar bugawa don tabbatar da cewa wannan bututun yana da ɗaurewa, to yanzu mun tabbatar da cewa an daidaita saman sosai.
Don ingantacciyar amfani da gwajin kusurwar tuntuɓar ruwa, yana da mahimmanci a yi aiki tare da Masanin Kimiyya na Surface don fahimtar menene madaidaicin kewayon kusurwa don isa bayan etch ɗin ku.Wannan yana ba ku damar gina tsarin haɗin kai wanda ake iya faɗi bisa ƙayyadaddun ƙididdigewa.Domin idan kun san cewa kuna buƙatar ƙirƙirar ƙasa tare da kusurwar lamba ta musamman, to kun san cewa lokacin da kuka yi, mannewar ku zai yi nasara.
Bugu da ƙari, don tabbatar da ingantaccen tsarin etching, yana da mahimmanci a ɗauki ma'aunin lamba ta ruwa kafin a yi etching.Samun ƙima mai tsafta na asali yana ba ku damar sanin ainihin abin da sigogin etch ɗin ke buƙata su kasance don isa ga buƙatun kusurwar tuntuɓar ku.
Kula da Etch ɗin ku
Ajiye da kyau na PTFE mai ƙima yana da mahimmanci don nasarar aiwatar da mannewa.Adana da kaya shine Mahimmin Sarrafa Mahimmanci (CCP).Waɗannan CCPs suna ko'ina cikin ɗaukacin tsari inda saman kayan ke da damar canzawa, don mai kyau ko na rashin lafiya, kuma wataƙila ba da gangan ba.Ma'ajiyar CCP tana da mahimmanci ga PTFE mai ƙyalƙyali saboda sabuwar tsabtace sinadarai tana da ƙarfi sosai ta yadda duk wani abu da ya shiga tare da shi zai iya canza kuma ya lalata aikin ku.
Mafi kyawun aiki a adana PTFE bayan etch shine a yi amfani da ainihin marufi da ya shigo ciki idan an sake sakewa.Idan ba haka ba, to jakunkuna masu toshe UV shine kyakkyawan madadin.Ka nisantar da PTFE daga iska da danshi gwargwadon yiwuwa, kuma kafin yunƙurin haɗawa da shi, tabbatar da ɗaukar ma'aunin kusurwa don tabbatar da cewa ya kiyaye ikon haɗin gwiwa.
PTFE wani abu ne na ban mamaki tare da aikace-aikace iri-iri, amma don samun fa'ida daga cikinsa, dole ne a yi shi ta hanyar sinadarai sannan a haɗa shi a mafi yawan lokuta.Don tabbatar da an yi haka sosai, ana buƙatar gwajin da ke kula da canjin sinadarai a saman.Haɗin gwiwa tare da ƙwararren kayan aiki wanda ya fahimci tsarin masana'antar ku don haɓaka etch ɗinku da sanya tabbaci cikin aikinku.
Lokacin aikawa: Yuli-17-2023