I-Polytetrafluoroethene,isifinyezo:I-PTFE
Igama elingaqhelekanga: PTFE, tetrafluoroethylene, plastic king, F4.
Iingenelo ze-PTFE
I-PTFEyiplastiki yobunjineli ekhethekileyo, okwangoku zizinto ezimelana nokugqwala, ezaziwa ngokuba yi "plastic king". Iimpawu eziphambili kukuxhathisa amaqondo obushushu aphezulu naphantsi, ukuxhathisa ukugqwala, ubushushu obuphezulu, ukuxhathisa ukwaluphala, nokuzithambisa.
Isetyenziswa kwi-aerospace, kwi-electronics nakwizixhobo zombane, kwishishini leekhemikhali, kwimishini nakwizixhobo, ekutyeni nakwizonyango, kwiimpompo, kwiivalvu nakwiipayipi, kwiimoto nakwiinqanawa, kwiicompressor zomoya, njl.njl., kwaye iye yaba yinto efunekayo ekusombululeni ubuchwepheshe obuninzi obuphambili kwishishini lanamhlanje.
Iiathom ze-F ezingasebenziyo ze-PTFE molecule zikhusela kwaye zikhusela i-CC bond, kwaye amandla e-CF bonding azinzile ngokukodwa, uthotho lweemolekyuli kunzima ukutshatyalaliswa, lulwakhiwo oluzinzileyo kakhulu. Olu lwakhiwo lweemolekyuli lukwachaza ezi mpawu zilandelayo zibalaseleyo ze-PTFE.
Ukumelana nokugqwala:Ukongeza kwiintsimbi ze-alkali ezinyibilikisiweyo kunye nezinyibilikisi ezimbalwa ezifana nee-alkane hydrocarbons ezingaphezulu kwama-300 degrees Celsius, ayimelani nokugqwala kwexesha elide yiyo nayiphi na eminye imichiza.
Ukuxhathisa amaqondo obushushu aphezulu naphantsi: ingasetyenziswa ixesha elide kwi -60+260℃.
Ukuthambisa okuphezulu:i-coefficient encinci yokungqubana phakathi kwezinto eziqinileyo, nomkhenkce awunakuthelekiswa nawo.
Ukunganamatheli:uxinzelelo oluncinci lomphezulu phakathi kwezinto eziqinileyo, alunamatheli nakweyiphi na into.
Ukumelana neMozulu:Ubomi obude bokwaluphala phakathi kweeplastiki.
Ayinatyhefu:Ezi zinto zingasetyenziswa njengemithambo yegazi yokwenziwa, ezingeyotyhefu kwaye ezingezizo ezomzimba kunye nezinye iziphumo ezibi, kwizixhobo zokutya kunye namayeza.
Iimpawu zokukhusela:Ifilimu etyebileyo njengephephandaba yanele ukumelana nombane we-voltage ephezulu ye-1500V.
Ukongeza, i-PTFE ayinayo i-moisture, ayitshisi, kwaye inamandla kakhulu kwi-oxygen, i-ultraviolet light.
Iingxaki ze-PTFE
Nangona i-PTFE inamandla aphantsi okusebenza, kodwa amandla oomatshini aphantsi, i-coefficient enkulu yokwandiswa komgca, ukumelana nokuguguleka okubi, ukumelana nokuqhekeka okubi, ukuqhuba kakuhle kobushushu kunye nezinye iziphene. Amandla oomatshini kunye nezinye iimeko ezinzima, ezinje ngokusetyenziswa kushishino lokutywina iivalvu kunye nomda wayo wokusetyenziswa ngokukhuselekileyo kobushushu ngokubanzi ungaphakathi kwe -70 ~ +150℃. Ukuze koyiswe ezi ziphene, i-PTFE resin inokuzaliswa ngee-ejenti zokuqinisa ukuphucula iipropati zoomatshini zezinto, ukuze kwandiswe ububanzi bokusetyenziswa kwezinto zayo.
Intshayelelo kwiimpawu ze-PTFE ezinemibala
Umbala wokuqala we-PTFE umhlophe okobisi, ngelixa umbala we-PTFE ungowokuba izinto ezisisiseko ze-PTFE zizaliswe zizinto ezincedisayo. Izinto ezincedisayo zinokwahlulwa zibe ngamacandelo amabini ngokwendlela ezisetyenziswa ngayo: iarhente yokuphucula kunye nearhente yomgubo wombala.
Udidi lwearhente yomgubo wombala: luzaliswe ngumgubo wombala kwi-PTFE, lunokuba mnyama, tyheli, bomvu, luhlaza, luhlaza okwesibhakabhaka njalo njalo. Iarhente yomgubo wombala itshintsha umbala we-PTFE kuphela, umlinganiselo wokugcwalisa umncinci ngoko ke isiphumo sokusebenza kwe-PTFE kwasekuqaleni sinokungahoywa. Ngokwethiyori, iarhente yomgubo wombala kufuneka ikwazi ukuchaphazela uzinzo lweekhemikhali ze-PTFE, ukugquma, amandla okutsalwa kunye nezinye iimpawu zoomatshini. Ke ngoko, eminye imicimbi ekhethekileyo kufuneka iqaphele. I-PTFE enemibala iyahlangabezana neemfuno zabathengi abaneemfuno zemibala ebonakalayo.
Ukuthenga iityhubhu ze-PTFE ezifanelekileyo akupheleli nje ekukhetheni iinkcukacha ezahlukeneyo zezicelo ezahlukeneyo. Okungakumbi ukukhetha umenzi othembekileyo.I-BesteflonI-Fluorine plastic Industry Co., Ltd. igxile ekuveliseni izinto ezikumgangatho ophezuluIipayipi ze-PTFEkunye neetyhubhu iminyaka engama-20. Ukuba kukho nayiphi na imibuzo kunye neemfuno zetyhubhu ye-ptfe, nceda uzive ukhululekile ukuqhagamshelana nathi ukuze ufumane iingcebiso zobungcali ezingakumbi.
Ixesha leposi: Epreli-19-2024