Ukusebenzisa isamente ye-epoxy okanye i-adhesive yokutywina i-polymer kwiglasi kunye nentsimbi kunye nayo ngokwayo.
Ukuxhathisa kwe-polytetrafluorethylene (PTFE ) kulo naluphi na uhlobo lokubambelela kuyintsomi kwaye kaninzi kuluncedo kakhulu njengoko injalo imichiza yayo engenamandla.Kodwa ezi mpawu zine-drawback enye ebalulekileyo, ukuba i-polymer inzima kakhulu ukuyidibanisa ngokuthembekileyo kwezinye izinto okanye kuyo ngokwayo.Kukho isisombululo sale ngxaki esiziswe kumbhali yinkampani ebizwa ngokuba yiReltek.(Okuninzi malunga nabo ngezantsi).Isisombululo sengxaki yi-Sodium Naphthalide echithwe kwi-2-Methoxyethyl Ether okanye kwi-Tetrahydrofuran.Oku kusetyenziswa njenge-etchant yokutshintsha iiathom ze-fluorine kumphezulu kunye neentlobo ze-molecular ezisebenzayo ngakumbi.Emva kokufakwa komphezulu wepolymer kukwamkelwa ngakumbi kweesamente ezahlukeneyo, kubandakanya izinto zokuncamathelisa epoxy resin ezifana neAraldite, okanye iReltek Epoxy Resins.I-etching iqondile kwaye ibandakanya ukuveza umphezulu wepolymer owenziwe rhabaxa kunye ne-degreased kwisisombululo se-Sodium Naphthalide malunga nemizuzu emi-2 kwaye emva koko uhlambe umphezulu oqoshiwe nge-Isopropanol.Umphezulu oqingqiweyo uzinzile kwaye uxhathise ngoomatshini kwaye ubophelelekile.Ubunzima kuphela kukwenziwa kunye nokuphathwa kwe-Sodium Naphthalide complex.
ISodium Naphthalide yiarhente yokunciphisa enamandla kakhulu, kwaye isabela ngokukhawuleza kakhulu ngeOxygen yomoya kunye namanzi.Nakuphi na ukuvezwa okubalulekileyo emoyeni kuya kuyenza ingasebenzi ngokukhawuleza.Yenziwa ngcono kwaye isetyenziswe kwibhokisi yeglavu phantsi kwenitrogen okanye kusetyenziswa itekhnoloji yeScklenk.
Kumalungiselelo aqeshwe ngumbhali, i-2.5 gm ye-Naphthalene (i-GPR Rectapur) yachithwa kwi-25 ml ye-Tetrahydrofuran kwi-tube ye-Schlenk.Kulo mxube we-0.2 gm yentsimbi ye-sodium esandula ukusika yongezwa.Indawo yomoya kwityhubhu yeSchlenk yahlanjululwa ngeArgon kwaye yatywinwa nge-Subaseal stopper.Itephu yecala yavalwa kwaye ityhubhu ye-schlenk yantywiliselwa ngokuyinxenye kwibhafu yamanzi egcinwe kwi-45C iiyure ezilishumi elinesibini.
Ekusetyenzisweni, i-Sodium Naphthalide iphathwa kakuhle kwi-tube ye-Schlenk okanye kwibhokisi yeglavu kunye nokunikezelwa kwe-Nitrogen okanye i-Argon kunenzuzo ukukhusela i-oxidation ye-reagent ngexesha lokukhwabanisa.Ilungiselelo lokuthunga iityhubhu zepolymer ezicekethekileyo zokutywinwa kwintsimbi engatyiwayo okanye kwityhubhu yeglasi.
Ityhubhu yepolymer ekufakwe kuyo itywiniwe kwisiphelo esikude ukunqanda ukulangazelela kwe-etchant, kwaye ifakwe kumbhobho wenaliti ye-hypodermic egqobhoza i-subbaseal.I-Subaseal yinto yokuvalwa okuguquguqukayo kuba inokuthwala iibhubhu ezininzi ezinobubanzi obuhlukeneyo.Oku kuthetha ukuba iityhubhu ezibanzi kakhulu (ukuya kuthi ga kwi-6mm od) zinokubhalwa ngolu hlobo.
Ixesha lokuthumela: Jan-16-2017