I-Titanium dioxide (i-TiO2) yimveliso ebalulekileyo ye-inorganic chemical, enokusetyenziswa okubalulekileyo kwi-coatings, i-inki, ukwenza amaphepha, irabha yeplastiki, i-chemical fiber, i-ceramics kunye namanye amashishini. I-Titanium dioxide (igama lesiNgesi: i-titanium dioxide) libala elimhlophe eliyinxalenye ye-titanium dioxide (TiO2). Igama lenzululwazi yi-titanium dioxide (titanium dioxide), kunye ne-molecular formula yi-TiO2. Yikhompawundi ye-polycrystalline eneengqungquthela ezihlala zicwangciswa kwaye zinesakhiwo se-lattice. Ubuninzi be-titanium dioxide bobona buncinci. Inkqubo yokuvelisa i-titanium dioxide ineendlela ezimbini zenkqubo: indlela ye-sulfuric acid kunye ne-chlorination method.
Iimpawu eziphambili:
1) Ubuninzi bobudlelwane
Phakathi kwemibala emhlophe esetyenziswa ngokuqhelekileyo, ukuxinana kwetitanium dioxide yeyona incinane. Phakathi kwemibala emhlophe yomgangatho ofanayo, indawo engaphezulu ye-titanium dioxide ngowona mkhulu kwaye umthamo we-pigment ngowona mkhulu.
2) Indawo yokunyibilika kunye nenqanaba lokubilisa
Ekubeni uhlobo lwe-anatase luguquka lube luhlobo lwe-rutile kwiqondo lobushushu eliphezulu, indawo yokunyibilika kunye neqondo lokubila le-anatase titanium dioxide ayikho ngokwenene. Kuphela i-rutile titanium dioxide enendawo yokunyibilika kunye nendawo yokubila. Indawo yokunyibilika ye-rutile titanium dioxide yi-1850 ° C, indawo yokunyibilika emoyeni ngu (1830 ± 15) ° C, kwaye indawo yokunyibilika kwi-oksijeni-ecebileyo yi-1879 ° C. Indawo yokunyibilika ihambelana nokucoceka kwe-titanium dioxide. . Indawo yokubila yerutile titanium dioxide yi (3200±300)°C, kwaye ititanium dioxide iyaguquguquka kancinci kobu bushushu buphezulu.
3) I-Dielectric rhoqo
I-Titanium dioxide ineempawu ezibalaseleyo zombane ngenxa yokungaguquguquki kwayo okuphezulu kwe-dielectric. Xa kumiselwa iipropathi ezithile zomzimba ze-titanium dioxide, ulwalathiso lwecrystallographic lwe-titanium dioxide crystals kufuneka luqwalaselwe. I-dielectric constant ye-anatase titanium dioxide iphantsi ngokwentelekiso, kuphela ngama-48.
4) Ukuqhuba
I-Titanium dioxide ineempawu ze-semiconductor, i-conductivity yayo inyuka ngokukhawuleza kunye nobushushu, kwaye iphinda ivelele kakhulu ekunqongopheni kwe-oksijini. I-dielectric constant kunye ne-semiconductor properties ye-rutile titanium dioxide ibaluleke kakhulu kumashishini e-electronics, kwaye ezi zakhiwo zingasetyenziselwa ukuvelisa amacandelo e-elektroniki afana ne-ceramic capacitors.
5) Ubunzima
Ngokomlinganiselo wobunzima be-Mohs, i-rutile titanium dioxide yi-6-6.5, kunye ne-anatase titanium dioxide yi-5.5-6.0. Ngoko ke, kwi-chemical fiber extinction, uhlobo lwe-anatase lusetyenziselwa ukuphepha ukunxiba imingxuma ye-spinneret.
6) Hygroscopicity
Nangona i-titanium dioxide i-hydrophilic, i-hygroscopicity yayo ayinamandla kakhulu, kwaye uhlobo lwe-rutile luncinci kunohlobo lwe-anatase. I-hygroscopicity ye-titanium dioxide inobudlelwane obuthile kunye nobukhulu bommandla wayo. Indawo enkulu yomhlaba kunye ne-hygroscopicity ephezulu nayo inxulumene nonyango lomphezulu kunye neempawu.
7) Ukuzinza kwe-thermal
I-Titanium dioxide yimathiriyeli enozinzo oluhle lwe-thermal.
8) Ubuncinci
Ukusabalalisa ubungakanani be-particle ye-titanium dioxide yisalathisi esibanzi, esichaphazela kakhulu ukusebenza kwe-titanium dioxide pigments kunye nokusebenza kwesicelo semveliso. Ngoko ke, ingxoxo yokugubungela amandla kunye ne-dispersibility inokuhlalutywa ngokuthe ngqo kwi-particle size distribution.
Izinto ezichaphazela ubungakanani bamasuntswana e-titanium dioxide zinzima. Eyokuqala yisayizi ye-particle yokuqala ye-hydrolysis. Ngokulawula kunye nokulungelelanisa iimeko zenkqubo ye-hydrolysis, ubukhulu be-particle ye-original buphakathi koluhlu oluthile. Okwesibini liqondo lobushushu lokubala. Ngethuba lokubala kwe-metatitanic acid, iinqununu zihamba kwixesha lokuguqulwa kwe-crystal kunye nexesha lokukhula, kwaye ukushisa okufanelekileyo kulawulwa ukwenza amaqhekeza okukhula ngaphakathi kwinqanaba elithile. Inyathelo lokugqibela kukucolwa kwemveliso. Ngokuqhelekileyo, ukuguqulwa kwe-Raymond mill kunye nokulungelelaniswa kwesantya somhlalutyi kusetyenziswa ukulawula umgangatho wokucoca. Kwangaxeshanye, ezinye izixhobo zokucola zingasetyenziswa, ezinje: i-high-speed pulverizer, ijet pulverizer kunye nehammer mills.
Ixesha lokuposa: Jul-28-2023