Da wane abu aka yi bututun ptfe?
Gabatarwar samfur
1,Bututun Ptfewani suna ne na polytetrafluoroethylene, taƙaitaccen bayanin Ingilishi shine PTFE, (wanda aka fi sani da "Plastic King, Hara"), kuma dabarar sinadaran shine -(CF2-CF2)n-. An gano Polytetrafluoroethylene ba da gangan ba a shekarar 1938 ta hanyar masanin kimiyyar sinadarai Dr. Roy J. Plunkett a DuPont a cikin DuPont's Jackson Laboratory a New Jersey, Amurka Lokacin da ya yi ƙoƙarin yin sabon chlorofluorocarbon A cikin yanayin sanyaya mai hade. Ana kiran samfuran wannan kayan gaba ɗaya da "rufin da ba ya mannewa"; abu ne na roba wanda ke amfani da fluorine don maye gurbin dukkan atom ɗin hydrogen a cikin polyethylene. Wannan abu yana da juriya ga acid, alkalis, da sauran sinadarai na halitta daban-daban, kuma kusan ba ya narkewa a cikin dukkan sinadarai masu narkewa. A lokaci guda, PTFE yana da halaye na juriya mai zafi, kuma ma'aunin gogayyarsa yana da ƙasa sosai, don haka ana iya amfani da shi azaman hanyar shafawa, kuma ya zama kyakkyawan rufi don layin ciki na tukwane marasa mannewa da bututun ruwa
Ana amfani da kayan wannan samfurin musamman akan waɗannan samfuran:
PTFE, FEP, PFA, ETFE, AF, NXT, FFR.
PTFE: Ana iya amfani da murfin PTFE (polytetrafluoroethylene) wanda ba ya mannewa akai-akai a 260°C, tare da matsakaicin zafin amfani na 290-300°C, ƙarancin gogayya sosai, juriya mai kyau ga lalacewa da kuma kyakkyawan kwanciyar hankali na sinadarai.
FEP: FEP (mai fluorinated ethylene propylene copolymer) mai rufewa mara mannewa yana narkewa kuma yana gudana don samar da fim mara mannewa yayin yin burodi. Yana da kyakkyawan kwanciyar hankali na sinadarai da kyawawan halaye marasa mannewa. Matsakaicin zafin amfani shine 200℃.
PFA: Rufin PFA (perfluoroalkyl compound) wanda ba ya mannewa yana narkewa kuma yana gudana yayin yin burodi don samar da fim mara ramuka kamar FEP. Amfanin PFA shine yana da zafin amfani mai yawa na 260 akai-akai.°C, ƙarfi da tauri, kuma ya dace musamman don amfani a aikace-aikacen hana mannewa da juriya ga sinadarai a ƙarƙashin yanayin zafi mai yawa.
PTFE (Polytetrafluoroethene) wani abu ne na roba wanda ke amfani da fluorine don maye gurbin dukkan atom ɗin hydrogen a cikin polyethylene. Wannan abu yana da juriya ga acid, alkalis, da sauran sinadarai na halitta daban-daban, kuma kusan ba ya narkewa a cikin dukkan sinadarai masu narkewa. A lokaci guda, bututun ptfe yana da halaye na juriya ga zafin jiki mai yawa, kuma ma'aunin gogayya yana da ƙasa sosai, don haka ana iya amfani da shi don shafawa, kuma ya zama kyakkyawan shafi don woks da bututun ruwa masu sauƙin tsaftacewa. Ana iya amfani da shi don juriya ga lalata bututun mai, juriya ga zafi mai yawa da ƙarancin zafi, da juriya ga tsatsa. Ana amfani da shi a cikin mawuyacin yanayi kamar shafawa, injiniyanci, kayan lantarki, kayan lantarki, da jiragen sama.
Siffofin samfurin
1, Babban juriya da ƙarancin zafin jiki: ƙaramin tasiri akan zafin jiki, kewayon zafin jiki mai faɗi, zafin jiki mai dacewa -65 ~ 260℃.
2, Ba ya mannewa: Kusan dukkan abubuwa ba sa haɗuwa da fim ɗin PTFE. Fina-finai masu siriri kuma suna nuna kyakkyawan aikin rashin tsangwama. 2. Juriyar zafi: Fim ɗin shafi na PTFE yana da kyakkyawan juriyar zafi da ƙarancin juriyar zafi. Yana iya jure yanayin zafi mai yawa har zuwa 300°C cikin ɗan gajeren lokaci, kuma gabaɗaya ana iya amfani da shi akai-akai tsakanin 240°C da 260°C. Yana da kwanciyar hankali mai mahimmanci na zafi. Yana iya aiki a yanayin sanyi ba tare da lalacewa ba kuma baya narkewa a yanayin zafi mai yawa.
3,Halayen zamiya: Fim ɗin shafi na PTFE yana da mafi girman ma'aunin gogayya. Ma'aunin gogayya yana canzawa lokacin da nauyin ke zamewa, amma ƙimar tana tsakanin 0.05-0.15 ne kawai.
4, Juriyar Danshi: Fuskar fim ɗin PTFE ba ta manne da ruwa da mai, kuma ba shi da sauƙi a manne da maganin yayin aikin samarwa. Idan akwai ƙaramin datti, kawai a goge shi. Lokaci kaɗan yana ɓatarwa, yana adana lokutan aiki da inganta ingancin aiki.
5, Juriyar Sakawa: Yana da kyakkyawan juriya ga lalacewa a ƙarƙashin babban kaya. A ƙarƙashin wani takamaiman kaya, yana da fa'idodi biyu na juriya ga lalacewa da rashin tsangwama.
6, Juriyar Tsatsa: PTFE ba ta da gurɓatawa da sinadarai, kuma tana iya jure dukkan sinadarai masu ƙarfi (gami da aqua regia) da kuma sinadarai masu ƙarfi banda ƙarfe masu narkewa na alkali, kafofin watsa labarai masu ɗauke da fluorinated da sodium hydroxide sama da 300°C. Matsayin mai rage sinadarai da sauran sinadarai na halitta daban-daban na iya kare sassa daga kowace irin tsatsa ta sinadarai.
kadarorin sinadarai
1, Rufi: Ba ya shafar muhalli da mita, juriyar girma na iya kaiwa 1018 ohm·cm, asarar dielectric ƙarami ne, kuma ƙarfin wutar lantarki yana da girma.
2, Babban juriya da ƙarancin zafin jiki: ƙaramin tasiri akan zafin jiki, kewayon zafin jiki mai faɗi, zafin jiki mai dacewa -190 ~ 260℃.
3, Mai shafawa kai: Yana da ƙaramin adadin gogayya tsakanin robobi kuma abu ne mai kyau wanda ba shi da mai.
4, Rashin mannewa a saman: kayan da aka sani da ƙarfi ba za su iya mannewa a saman ba, abu ne mai ƙarfi wanda ke da ƙaramin ƙarfin saman.
5, juriya ga yanayi, juriya ga radiation da ƙarancin permeability: dogon lokaci na fallasa ga yanayi, saman da aikin ba su canzawa.
6. Rashin Hana Haɗuwa: Ma'aunin iyaka na iskar oxygen yana ƙasa da digiri 90.
7, Ana amfani da PTFE sosai a masana'antu waɗanda ke buƙatar juriya ga zafin jiki mai yawa da kuma ɗanko mai yawa. Hakanan ana iya amfani da mafi ƙarfi super acid-fluoroantimonic acid don kiyayewa.
Yankin aikace-aikacen samfur
Ana iya ƙirƙirar polytetrafluoroethylene ta hanyar turawa ko fitar da shi; ana iya kuma yin shi da fim sannan a yanka shi zuwa tef ɗin PTFE da aka ɗora a kan shaft idan aka yi amfani da shi a cikin wayoyi masu zafi sosai. Ana amfani da shi don samar da kebul mai yawan mita kuma a yi shi kai tsaye zuwa watsa ruwa. Ana iya amfani da shi don shafa, sanya shi a cikin ruwa ko yin zare.
Ana amfani da Polytetrafluoroethylene sosai a masana'antu kamar makamashin nukiliya, tsaron ƙasa, sararin samaniya, na'urorin lantarki, lantarki, sinadarai, injina, kayan aiki, mita, gini, yadi, maganin saman ƙarfe, magunguna, kula da lafiya, abinci, aikin ƙarfe da narkewa, da sauransu. Kayayyakin da ke lalata iska, kayan rufewa, rufin hana mannewa, da sauransu sun sa ya zama samfurin da ba za a iya maye gurbinsa ba.
Tiyo na PTFEyana da kyawawan halaye masu kyau, juriya ga zafin jiki mai yawa, juriya ga tsatsa, rashin mannewa, mai shafawa kai, kyawawan halayen dielectric, da kuma ƙarancin haɗin gwiwa. Ana amfani da shi azaman robobi na injiniya, ana iya yin shi a cikin bututun PTFE, sanduna, bel, faranti, fina-finai, da sauransu. Ana amfani da shi gabaɗaya a cikin bututun da ke jure tsatsa, kwantena, famfo, bawuloli, radar, kayan aikin sadarwa masu yawan mita, kayan aikin rediyo, radomes, da sauransu tare da buƙatun aiki mai girma. Ƙara duk wani cikawa wanda zai iya jure zafin sintering na polytetrafluoroethylene, ana iya inganta halayen injina sosai. A lokaci guda, ana kiyaye sauran kyawawan halaye na PTFE. Nau'ikan da aka cika sun haɗa da fiber gilashi, ƙarfe, ƙarfe oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, da sauransu. Ana iya ƙara juriyar lalacewa da ƙimar iyaka ta PV da sau 1000
Bincike masu alaƙa da bututun ptfe:
Lokacin Saƙo: Janairu-07-2021