I-Titanium dioxide (i-TiO2) iwumkhiqizo wamakhemikhali wezinto ezingaphili obalulekile, onokusetshenziswa okubalulekile embotsheni, oyinki, ekwenzeni iphepha, irabha yepulasitiki, imicu yamakhemikhali, izitsha zobumba nezinye izimboni. I-Titanium dioxide (igama lesiNgisi: i-titanium dioxide) i-pigment emhlophe ingxenye yayo eyinhloko i-titanium dioxide (TiO2). Igama lesayensi yi-titanium dioxide (titanium dioxide), kanye nefomula yamangqamuzana i-TiO2. Kuyinhlanganisela ye-polycrystalline izinhlayiya zazo ezihlala zihlelwa futhi zinesakhiwo se-lattice. Ukuminyana okuhlobene kwe-titanium dioxide kuncane kakhulu. Inqubo yokukhiqiza i-titanium dioxide inemizila emibili yenqubo: indlela ye-sulfuric acid kanye nendlela ye-chlorination.
Izici eziyinhloko:
1) Ukuminyana okuhlobene
Phakathi kwemibala emhlophe evame ukusetshenziswa, ukuminyana okuhlobene kwe-titanium dioxide kuncane kakhulu. Phakathi kwemibala emhlophe yekhwalithi efanayo, indawo engaphezulu ye-titanium dioxide inkulu futhi umthamo we-pigment mkhulu kakhulu.
2) Iphuzu lokuncibilika nendawo yokubilisa
Njengoba uhlobo lwe-anatase lushintsha lube uhlobo lwe-rutile ezingeni lokushisa eliphezulu, indawo yokuncibilika nendawo abilayo ye-anatase titanium dioxide azikho ngempela. I-rutile titanium dioxide kuphela enephuzu lokuncibilika nendawo yokubila. Indawo yokuncibilika ye-rutile titanium dioxide ingu-1850 ° C, indawo yokuncibilika emoyeni ingu (1830 ± 15) ° C, futhi indawo yokuncibilika ku-oxygen ecebile ngu-1879 ° C. Iphuzu lokuncibilika lihlobene nokuhlanzeka kwe-titanium dioxide. . Iphuzu elibilayo le-rutile titanium dioxide lingu-(3200±300)°C, futhi i-titanium dioxide iyashintshashintsha kancane kulokhu kushisa okuphezulu.
3) I-Dielectric njalo
I-Titanium dioxide inezakhiwo zikagesi ezinhle kakhulu ngenxa yokungaguquguquki kwayo okuphezulu kwe-dielectric. Lapho kunqunywa izici ezithile ezibonakalayo ze-titanium dioxide, isiqondiso se-crystallographic samakristalu e-titanium dioxide kufanele kucatshangelwe. I-dielectric constant ye-anatase titanium dioxide iphansi kakhulu, kuphela i-48.
4) I-Conductivity
I-Titanium dioxide inezakhiwo ze-semiconductor, ukuqhutshwa kwayo kukhula ngokushesha ngezinga lokushisa, futhi izwela kakhulu ekuntuleni umoya-mpilo. Izakhiwo ze-dielectric njalo kanye ne-semiconductor ye-rutile titanium dioxide zibaluleke kakhulu embonini ye-electronics, futhi lezi zakhiwo zingasetshenziswa ukukhiqiza izingxenye ze-elekthronikhi ezifana nama-ceramic capacitor.
5) Ubulukhuni
Ngokwesilinganiso sokuqina kwe-Mohs, i-rutile titanium dioxide ingu-6-6.5, kanti i-anatase titanium dioxide ingu-5.5-6.0. Ngakho-ke, ekuqothulweni kwe-fiber yamakhemikhali, uhlobo lwe-anatase lusetshenziselwa ukugwema ukuguga kwezimbobo ze-spinneret.
6) Hygroscopicity
Nakuba i-titanium dioxide iyi-hydrophilic, i-hygroscopicity yayo ayinamandla kakhulu, futhi uhlobo lwe-rutile luncane kunohlobo lwe-anatase. I-hygroscopicity ye-titanium dioxide inobudlelwane obuthile nobukhulu bendawo yayo. Indawo enkulu engaphezulu kanye ne-hygroscopicity ephezulu nayo ihlobene nokwelashwa kwendawo kanye nezakhiwo.
7) Ukuzinza okushisayo
I-Titanium dioxide iyimpahla enokuqina okuhle kokushisa.
8) Imbudumbudu
Ukusatshalaliswa kosayizi wezinhlayiyana ze-titanium dioxide kuyinkomba ebanzi, ethinta kakhulu ukusebenza kombala we-titanium dioxide nokusebenza kokusetshenziswa komkhiqizo. Ngakho-ke, ingxoxo yokumboza amandla kanye ne-dispersibility ingahlaziywa ngokuqondile kusukela ekusatshalalisweni kosayizi wezinhlayiyana.
Izinto ezithinta ukusatshalaliswa kosayizi wezinhlayiyana ze-titanium dioxide ziyinkimbinkimbi. Esokuqala ubukhulu bezinhlayiyana zokuqala ze-hydrolysis. Ngokulawula nokulungisa izimo zenqubo ye-hydrolysis, usayizi wezinhlayiyana zangempela ungaphakathi kwebanga elithile. Okwesibili izinga lokushisa lokubala. Ngesikhathi sokubalwa kwe-metatitanic acid, izinhlayiya ziba nesikhathi sokuguqulwa kwekristalu kanye nesikhathi sokukhula, futhi izinga lokushisa elifanele lilawulwa ukwenza izinhlayiya zokukhula zibe phakathi kwebanga elithile. Isinyathelo sokugcina ukugaywa komkhiqizo. Imvamisa, ukuguqulwa kwesigayo sikaRaymond kanye nokulungiswa kwejubane lokuhlaziya kusetshenziswa ukulawula ikhwalithi yokugaya. Ngasikhathi sinye, ezinye izinto zokuhlikihla zingasetshenziswa, njenge: i-pulverizer enesivinini esikhulu, i-jet pulverizer ne-hammer mills.
Isikhathi sokuthumela: Jul-28-2023