Kugwirizana kwa PTFE

Kugwiritsa ntchito simenti ya epoxy kapena zomatira posindikiza polima kugalasi ndi zitsulo komanso pawokha.

Kukaniza kwa polytetrafluorethylene (PTFE) kumamatira amtundu uliwonse ndikodziwika ndipo nthawi zambiri kumakhala kothandiza kwambiri monga momwe amapangira mankhwala.Koma makhalidwe amenewa ali ndi drawback imodzi yofunika kwambiri, kuti polima n'kovuta kwambiri kugwirizana modalirika ndi zipangizo zina kapena palokha.Pali njira yothetsera vutoli yomwe idabweretsedwa kwa wolemba ndi kampani yotchedwa Reltek.(Zambiri za iwo pansipa).Njira yothetsera vutoli ndi Sodium Naphthalide yosungunuka mu 2-Methoxyethyl Ether kapena mu Tetrahydrofuran.Izi zimagwiritsidwa ntchito ngati etchant m'malo mwa maatomu a fluorine pamtunda ndi mitundu yokhazikika komanso yodalirika ya mamolekyu.Pambuyo etching polima pamwamba ndi zambiri kuvomereza simenti zosiyanasiyana, kuphatikizapo epoxy utomoni zomatira monga Araldite, kapena apadera kwambiri Reltek Epoxy Resins.The etching ndi wolunjika ndi kumaphatikizapo poyera roughened ndi degreased polima pamwamba pa njira ya Sodium Naphthalide kwa mphindi 2 ndiyeno kutsuka pamwamba zokhazikika ndi Isopropanol.Malo okhazikika ndi okhazikika komanso osasunthika pamakina komanso omangidwa.Vuto lokhalo ndi kupanga ndi kusamalira zovuta za Sodium Naphthalide.

Sodium Naphthalide ndi yamphamvu kwambiri yochepetsera, ndipo imachita mwachangu kwambiri ndi Oxygen wa mumlengalenga komanso ndi madzi.Kuyang'ana kwakukulu kulikonse kumlengalenga kumayimitsa msanga.Amapangidwa bwino ndikugwiritsidwa ntchito m'bokosi la magolovu pansi pa nayitrogeni kapena kugwiritsa ntchito ukadaulo wa Scklenk.

Pokonzekera ntchito ndi wolemba, 2.5 gm ya Naphthalene (GPR Rectapur) inasungunuka mu 25 ml ya Tetrahydrofuran mu chubu cha Schlenk.Kusakaniza uku 0,2 magalamu a zitsulo zodulidwa mwatsopano za sodium zinawonjezeredwa.Malo a mpweya mu chubu cha Schlenk adatsukidwa ndi Argon ndikusindikizidwa ndi Subaseal stopper.Pompopi wam'mbali adatsekedwa ndipo chubu cha schlenk chinamizidwa pang'ono mu bafa lamadzi lomwe limakhala pa 45C kwa maola khumi ndi awiri.

Pogwiritsidwa ntchito, Sodium Naphthalide imayendetsedwa bwino mu chubu cha Schlenk kapena mu bokosi la glove ndipo kupereka kwa Nitrogen kapena Argon ndikopindulitsa kuteteza reagent oxidation panthawi yakusintha.Makonzedwe a etching machubu oonda a polima kuti asindikize muzitsulo zosapanga dzimbiri kapena machubu agalasi.

Chubu cha polima chomwe chimayikidwa chimamata kumapeto kuti chiteteze kulakalaka kwa etchant, ndikulowetsedwa kudzera pabowo la singano ya hypodermic yomwe imaboola pansi.Subaseal ndi kutsekedwa kosunthika chifukwa imatha kunyamula machubu angapo amitundu yosiyanasiyana.Izi zikutanthauza kuti machubu ambiri (mpaka 6mm od) amatha kuzikika motere.