Farashin PTFE

Yin amfani da siminti na epoxy ko m don rufe polymer zuwa gilashi da ƙarfe da kanta.

Juriya na polytetrafluorethylene (PTFE) ga kowane nau'i na riko na almara ne kuma sau da yawa yana da amfani sosai kamar rashin aikin sinadarai.Amma waɗannan halayen suna da babban koma baya, cewa polymer yana da matukar wahala a danganta dogaro ga wasu kayan ko ga kanta.Akwai maganin wannan matsala da wani kamfani mai suna Reltek ya kawo wa marubucin.(Ƙari game da su a ƙasa).Maganin matsalar shine Sodium Naphthalide narkar da a cikin 2-Methoxyethyl Ether ko a cikin Tetrahydrofuran.Ana amfani da wannan azaman ƙari don maye gurbin atom ɗin fluorine a saman tare da ƙarin amsawa da nau'ikan kwayoyin halitta.Bayan etching saman polymer ya fi karɓar siminti daban-daban, gami da adhesives resin epoxy kamar su Araldite, ko ƙarin ƙwararrun Reltek Epoxy Resins.Etching ɗin yana da sauƙi kuma ya haɗa da fallasa rarrabuwar polymer da aka lalatar da ita zuwa maganin Sodium Naphthalide na kusan mintuna 2 sannan a wanke saman da Isopropanol.The etched surface ne barga da mechanically resistant da bondable.Wahala kawai ita ce kerawa da sarrafa hadadden Sodium Naphthalide.

Sodium Naphthalide wakili ne mai ƙarfi mai ƙarfi, kuma yana amsawa da sauri tare da iskar Oxygen da ruwa.Duk wani muhimmin bayyanar da yanayi zai kashe shi da sauri.Don haka an fi yin shi da amfani da shi a cikin akwatin safar hannu ƙarƙashin nitrogen ko ta amfani da fasahar Scklenk.

A cikin shirye-shiryen da marubucin ya yi aiki, 2.5 gm na Naphthalene (GPR Rectapur) an narkar da shi a cikin 25 ml na Tetrahydrofuran a cikin bututun Schlenk.A cikin wannan cakuda an ƙara 0.2 gm na ƙaramin sodium da aka yanke.An share sararin samaniyar da ke cikin bututun Schlenk tare da Argon kuma an rufe shi da madaidaicin Subaseal.An rufe famfo na gefe kuma an zubar da bututun schlenk a cikin wani yanki na wanka na ruwa wanda aka yi a 45C na awa goma sha biyu.

A amfani, Sodium Naphthalide yana da kyau abar kulawa a cikin bututun Schlenk ko a cikin akwatin safar hannu kuma wadatar Nitrogen ko Argon yana da fa'ida don hana iskar oxygen da iskar shaka yayin manipulations.Tsari don etching bakin ciki bututun polymer don rufewa cikin bakin karfe ko bututun gilashi.

An rufe bututun polymer ɗin da za a yi a ƙulla a ƙarshen nesa don hana sha'awar abin da ake so, kuma an saka shi ta cikin ƙwayar allurar hypodermic wacce ke huda ƙasa.Subaseal babban rufewa ne ta yadda zai iya ɗaukar bututu masu yawa na diamita dabam dabam.Wannan yana nufin cewa bututu masu fadi (har zuwa 6mm od) ana iya yin su ta wannan hanyar.