Yintoni i-titanium dioxide?
Eyona nto iphambili kwi-titanium dioxide yi-TIO2, eyi-pigment ebalulekileyo ye-inorganic chemical efana ne-white solid okanye i-powder. Ayinatyhefu, inobumhlophe obuphezulu kunye nokukhanya okuphezulu, kwaye ithathwa njengeyona pigment imhlophe ilungileyo yokuphucula ubumhlophe bezinto. Isetyenziswa kakhulu kumashishini afana neengubo, iiplastiki, irabha, iphepha, i-inki, ii-ceramics, iglasi, njl.njl.
Ⅰ.Umzobo wekhonkco loshishino lweTitanium dioxide:
(IsiNgesi)1） Umgca ophezulu we-titanium dioxide uqulathe izinto ezikrwada, kuquka i-ilmenite, i-titanium concentrate, i-rutile, njl.njl.;
(IsiNgesi)2） I-midstream ibhekisa kwiimveliso ze-titanium dioxide.
（3）Ezantsi ngumngxuma wokusetyenziswa kwe-titanium dioxide.I-titanium dioxide isetyenziswa kakhulu kwiindawo ezahlukeneyo ezifana neengubo, iiplastiki, ukwenza iphepha, i-inki, irabha, njl.
Ⅱ. Isakhiwo sekristale se-titanium dioxide:
I-titanium dioxide luhlobo lwekhompawundi ye-polymorphous, eneentlobo ezintathu zekristale eziqhelekileyo kwindalo, ezizezi i-anatase, i-rutile kunye ne-brookite.
Zombini i-rutile kunye ne-anatase zezenkqubo yekristale ye-tetragonal, ezizinzileyo phantsi kobushushu obuqhelekileyo; i-brookite yezenkqubo yekristale ye-orthorhombic, enesakhiwo sekristale esingazinzanga, ngoko ke ayinaxabiso lininzi kushishino okwangoku.
Phakathi kwezakhiwo ezintathu, i-rutile phase yeyona izinzileyo. I-Anatase phase iya kuguquka ngokungenakuguqulwa ibe yi-rutile phase engaphezulu kwama-900°C, ngelixa i-brookite phase iya kuguquka ngokungenakuguqulwa ibe yi-rutile phase engaphezulu kwama-650°C.
（1） Isigaba se-Rutile titanium dioxide
Kwi-rutile phase titanium dioxide, ii-athomu ze-Ti zifumaneka embindini we-crystal lattice, kwaye ii-athomu ze-oksijini ezintandathu zifumaneka kwiikona ze-titanium-oxygen octahedron. I-octahedron nganye iqhagamshelwe kwii-octahedron ezili-10 ezijikelezileyo (kuquka ii-vertices ezisibhozo zokwabelana kunye nemiphetho emibini yokwabelana), kwaye ii-molecule ezimbini ze-TiO2 zenza iseli yeyunithi.
Umzobo weskemakhi weseli yekristale yesigaba se-rutile titanium dioxide (ekhohlo)
Indlela yokudibanisa i-titanium oxide octahedron (ekunene)
（2）I-Anatase phase titanium dioxide
Kwi-anatase phase titanium dioxide, i-octahedron nganye ye-titanium-oxygen iqhagamshelwe kwii-octahedron ezisi-8 ezijikelezileyo (imiphetho e-4 yokwabelana kunye nee-vertices ezi-4 zokwabelana), kwaye ii-molecule ze-TiO2 ezi-4 zenza i-unit cell.
Umzobo weskemakhi weseli yekristale yesigaba se-rutile titanium dioxide (ekhohlo)
Indlela yokudibanisa i-titanium oxide octahedron (ekunene)
Iindlela zokulungiselela iTitanium Dioxide:
Inkqubo yokuvelisa i-titanium dioxide ibandakanya ikakhulu inkqubo ye-sulfuric acid kunye nenkqubo ye-chlorination.
(1) Inkqubo ye-Sulfuric acid
Inkqubo ye-sulfuric acid yokuvelisa i-titanium dioxide ibandakanya i-acidolysis reaction ye-titanium iron powder ene-sulfuric acid egxininisiweyo ukuvelisa i-titanium sulfate, ethi emva koko i-hydrolyzed ukuvelisa i-metatitanic acid. Emva kokuba i-calcination kunye ne-crushing, kufunyanwa iimveliso ze-titanium dioxide. Le ndlela inokuvelisa i-anatase kunye ne-rutile titanium dioxide.
(2) Inkqubo yokukhupha i-chlorine
Inkqubo yokufaka i-chlorination kwimveliso ye-titanium dioxide ibandakanya ukuxuba i-rutile okanye i-high-titanium slag powder kunye ne-coke uze emva koko wenze i-chlorination kwiqondo lobushushu eliphezulu ukuvelisa i-titanium tetrachloride. Emva kwe-oxidation kwiqondo lobushushu eliphezulu, imveliso ye-titanium dioxide ifunyanwa ngokuhluza, ukuhlamba ngamanzi, ukomisa, kunye nokutyumza. Inkqubo yokufaka i-chlorination kwimveliso ye-titanium dioxide inokuvelisa kuphela iimveliso ze-rutile.
Indlela yokwahlula ubunyani be-titanium dioxide?
I. Iindlela Zomzimba:
(IsiNgesi)1）Eyona ndlela ilula kukuthelekisa ubume ngokuchukumisa. I-titanium dioxide yobuxoki ivakala ithambile, ngelixa i-titanium dioxide yokwenyani ivakala irhabaxa.
(IsiNgesi)2）Ngokuhlamba ngamanzi, ukuba ubeka i-titanium dioxide esandleni sakho, kulula ukuyihlamba le yokwenyani, ngelixa le yokwenyani ingabi lula ukuyihlamba.
(IsiNgesi)3）Thatha ikomityi yamanzi acocekileyo uze ufake i-titanium dioxide kuyo. Le idada phezu kwamanzi iyinyani, ngelixa leyo ihleli ezantsi iyinyani (le ndlela isenokungasebenzi kwiimveliso ezivuselelweyo okanye eziguquliweyo).
(IsiNgesi)4）Jonga ukuba inyibilika kangakanani emanzini. Ngokubanzi, i-titanium dioxide iyanyibilika emanzini (ngaphandle kwe-titanium dioxide eyenzelwe ngokukodwa iiplastiki, ii-inki, kunye ne-titanium dioxide yokwenziwa, enganyibiliki emanzini).
II. Iindlela zekhemikhali:
(1) Ukuba kongezwe umgubo wekhalsiyam: Ukongeza i-hydrochloric acid kuya kubangela impendulo enamandla enesandi sokukrwitsha, ehamba nokuveliswa kwenani elikhulu lamaqamza (kuba i-calcium carbonate isabela ne-asidi ukuvelisa i-carbon dioxide).
(2) Ukuba kongezwe i-lithopone: Ukongeza i-sulfuric acid enyibilikisiweyo okanye i-hydrochloric acid kuya kuvelisa ivumba leqanda elibolileyo.
(3) Ukuba isampuli ayithambisi manzi, ukongeza i-hydrochloric acid akuyi kubangela ukusabela. Nangona kunjalo, emva kokuyimanzisa nge-ethanol uze wongeze i-hydrochloric acid, ukuba kuvela amaqamza, oko kubonisa ukuba isampuli ine-calcium carbonate powder egqunywe nge-coated.
III. Kukwakho nezinye iindlela ezimbini ezilungileyo:
(1) Ngokusebenzisa ifomula efanayo yePP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide powder, kokukhona amandla ezinto eziphumayo esezantsi, kokukhona i-titanium dioxide (rutile) iyinyani ngakumbi.
(2) Khetha i-resin ecacileyo, efana ne-ABS ecacileyo enomgubo we-titanium dioxide oyi-0.5%. Linganisa ukuhanjiswa kwayo kokukhanya. Okukhona ukuhanjiswa kokukhanya kuphantsi, kokukhona umgubo we-titanium dioxide uyinyani.
Ixesha leposi: Meyi-31-2024
