Zazzabi sama da 77°C ba su da kyau ga sassa na yawancin elastomers da robobi, yayin da PTFE ke jure yanayin zafi har zuwa 260°C.Ko da ƙasa da 77°C, idan aka haɗa acid ɗin da ke lalata da ƙarfe da abubuwan kaushi na halitta, ana fifita layin layi da kayan aikin PTFE sau da yawa saboda elastomers da sauran robobi sukan rasa juriya ga kumburin ƙarfi da laushi.
Ta hanyar rashin kuzarin sinadari, muna nufin hakaPTFEFluorocarbon resins na iya kasancewa cikin ci gaba da hulɗa tare da wani abu ba tare da wani abin da ke faruwa ba.Gabaɗaya, PTFE fluorocarbon resins ba su da ƙarancin sinadarai.Duk da haka, wannan magana, kamar duk na gaba ɗaya, dole ne ta cancanta idan ana son ta zama daidai.Cancancin ba zai haifar da rudani ba, duk da haka, idan mutum ya tuna da ainihin gaskiyar game da halayen resin PTFE.
Takaitaccen bayanin da aka saba yi na bayanan gwaji daban-daban na iya zama yaudara, domin yana iya haɗa nau'ikan halayen “Chemical” daban-daban.Idan bayanin zai bayyana a sarari, dole ne ya bambanta tsakanin tsananin halayen sinadarai da ayyukan jiki kamar sha.Bayanin dole ne ya bawa mai amfani damar yin la'akari da alaƙar kayan aikin jiki da sinadarai waɗanda zasu iya shafar takamaiman aikace-aikacen.
Misali, resins na PTFE ba za su sami tasiri ba ta hanyar nutsewa a cikin ruwa regia.Amma duk da haka idan zazzabi da sakamakon sakamakon wannan reagent ya zama babba, ɗaukar abubuwan da ke cikin reagent shima zai ƙaru.Canje-canje na gaba, kamar asarar matsi na kwatsam, na iya yin lahani a jiki saboda faɗaɗa tururin da ke cikin guduro.Babu shakka, sa'an nan, idan muka magana game da sinadaran Properties na PTFE dole ne mu bambanta tsakanin tsananin sinadaran halayen, kamar yadda muka bayyana a cikin sharuddan "Chemical karfinsu" da kuma jiki ayyuka, kamar "sha" hade da inji da kuma thermal danniya.
A cikin yanayin yanayin amfani na yau da kullun, PTFE resins ana kaiwa hari da wasu sinadarai kaɗan maimakon tsara sinadarai waɗanda suka dace da su.Wadannan reactants suna daga cikin mafi tashin hankali oxidizers da rage jamiái da aka sani.Sodium elemental a cikin kusancin hulɗa tare da fluorocarbons yana cire fluorine daga kwayoyin polymer.Ana amfani da wannan dauki a ko'ina a cikin maganin anhydrous don etch saman PTFE domin resins na iya zama m bonded.Sauran karafa na alkali (potassium, lithium, da sauransu) suna amsa irin wannan.
Haɗe-haɗe na ƙaƙƙarfan ƙaƙƙarfan ɓangarorin ƙarafa (misali, aluminum ko magnesium) tare da resins ɗin foda na fluorocarbon na iya ɗaukar ƙarfi lokacin da aka kunna wuta, amma yanayin zafi ya yi nisa sama da shawarar matsakaicin zafin sabis da aka buga don resin PTFE.PTFE masu ƙarfin gaske masu ƙarfi, fluorine (F2) da mahaɗan da ke da alaƙa (misali, chlorine trifluoride, CIF3), PTFE za a iya sarrafa su kawai tare da kulawa sosai da sanin haɗarin haɗari.Fluorine yana shiga cikin resins, kuma tare da irin wannan kusancin, cakuda ya zama mai kula da tushen ƙonewa kamar tasiri.
A wasu lokuta a ko kusa da iyakar zafin sabis na 260 ° C don TFE & PFA, da 204 ° C don FEP, an ba da rahoton wasu sinadarai masu yawa a babban taro suna mayar da martani ga PTFE.An samar da hari mai kama da sodium etch a irin wannan yanayin zafi da 80% NaOH ko KOH, ƙarfe hydrides kamar boranes (misali, B2H6), aluminum chloride, ammonia (NH3), da wasu amines (R-NH2) da imines ( R = NH).Har ila yau, jinkirin harin oxidative an lura da shi ta hanyar 70% nitric acid a ƙarƙashin matsin lamba a 250 ° C.Ana buƙatar gwaji na musamman lokacin da aka kusanci irin wannan matsananciyar ragewa ko yanayin iskar oxygen.
Don haka, tare da keɓancewa kamar yadda aka gani, resins na PTFE suna nuna fa'idar sinadarai da sabis na thermal sosai.Amma mai siye ko ƙayyadaddun abubuwan abubuwan PTFE shima yana buƙatar sani da fahimtar iyakokin sa dangane da mafi yawan mahalli na sinadarai.Ba kamar ƙayyadaddun karafa ba, waɗannan yawanci ba sinadarai ba ce ta zahiri.Tasirin zafin jiki, matsa lamba, da shanyewar sinadarai a cikin PTFE, da hulɗar su, shine abin da a cikin lokaci yakan iyakance yanayin da PTFE za ta yi aiki mai gamsarwa.Tun da yake wannan ya bambanta da kusan kowane kayan gini, yana buƙatar yin la'akari sosai da ƙarin cikakkun bayanai waɗanda ke biyo baya.
Lokacin aikawa: Oktoba-04-2019