Yintoni i-titanium dioxide?
Inxalenye ephambili ye-titanium dioxide yi-TIO2, eyi-pigment ebalulekileyo ye-inorganic chemical ngendlela yesiqina esimhlophe okanye umgubo. Ayinatyhefu, inobumhlophe obuphezulu kunye nokukhanya, kwaye ithathwa njengeyona pigment emhlophe yokuphucula ubumhlophe bezinto. Isetyenziswa ngokubanzi kumashishini afana neengubo, iiplastiki, irabha, iphepha, i-inki, i-ceramics, iglasi, njl.
Ⅰ.Umzobo wekhonkco loshishino lwe-Titanium dioxide:
(1）Umntla wekhonkco loshishino lwetitanium dioxide unemathiriyeli ekrwada, kubandakanywa iilmenite, i-titanium concentrate, irutile, njl.
(2）Umlambo ophakathi ubhekisa kwiimveliso zetitanium dioxide.
(3) Umzantsi womlambo yintsimi yesicelo se-titanium dioxide.I-Titanium dioxide isetyenziswa ngokubanzi kwiinkalo ezahlukeneyo ezifana neengubo, iiplastiki, ukwenza iphepha, i-inki, irabha, njl.
Ⅱ. Ubume bekristale be-titanium dioxide:
I-Titanium dioxide luhlobo lwe-polymorphous compound, eneentlobo ezintathu zekristale eziqhelekileyo kwindalo, ezizezi, i-anatase, i-rutile kunye ne-brookite.
Zombini i-rutile kunye ne-anatase ziyi-tetragonal crystal system, ezinzile phantsi kobushushu obuqhelekileyo; I-brookite yeyenkqubo yekristale ye-orthorhombic, enesakhiwo sekristale esingazinzanga, ngoko ke ayinaxabiso elincinci kwishishini okwangoku.
Phakathi kwezakhiwo ezithathu, isigaba se-rutile sesona sizinzile. Isigaba se-Anatase siyakutshintsha ngokungenakujikwa sibe yirutile ngaphezulu kwe-900°C, ngelixa isigaba se-brookite singenakuguqulwa sibe sisigaba se-rutile ngaphezulu kwe-650°C.
(1) Isigaba seRutile titanium dioxide
Kwinqanaba le-rutile i-titanium dioxide, iiathom ze-Ti zibekwe kumbindi we-crystal lattice, kwaye ii-athomu ze-oksijini ezintandathu zibekwe kwiikona ze-titanium-oxygen octahedron. I-octahedron nganye iqhagamshelwe kwii-octahedron ezili-10 ezijikelezileyo (kubandakanywa ii-vertices ezisibhozo zokwabelana kunye nemiphetho edibeneyo yokwabelana), kunye neemolekyuli ezimbini ze-TiO2 zenza iseli yeyunithi.
Umzobo ocwangcisiweyo weseli yekristale yesigaba se-rutile titanium dioxide (ekhohlo)
Indlela yokudibanisa i-titanium oxide octahedron (ekunene)
(2) isigaba se-Anatase titanium dioxide
Kwisigaba se-anatase titanium dioxide, i-octahedron nganye ye-titanium-oxygen ixhunywe kwi-octahedron ejikelezayo ye-8 (i-4 edge edges kunye ne-4 yokwabelana nge-vertices), kunye ne-4 TiO2 iamolekyu zenza i-unit cell cell.
Umzobo ocwangcisiweyo weseli yekristale yesigaba se-rutile titanium dioxide (ekhohlo)
Indlela yokudibanisa i-titanium oxide octahedron (ekunene)
Ⅲ.Iindlela zoLungiso lwe-Titanium Dioxide:
Inkqubo yokuvelisa i-titanium dioxide ikakhulu ibandakanya inkqubo ye-sulfuric acid kunye nenkqubo ye-chlorination.
(1) Inkqubo ye-asidi ye-sulfuric
Inkqubo ye-asidi ye-sulfuric yemveliso ye-titanium dioxide ibandakanya i-acidolysis reaction ye-titanium iron powder kunye ne-asidi ye-sulfuric concentrated ukuvelisa i-titanium sulfate, ethi ke i-hydrolyzed ivelise i-metatitanic acid. Emva kokubala kunye nokutyumza, iimveliso ze-titanium dioxide zifumaneka. Le ndlela inokuvelisa i-anatase kunye ne-rutile titanium dioxide.
(2) Inkqubo yeChlorination
Inkqubo ye-chlorination yokuveliswa kwe-titanium dioxide ibandakanya ukuxuba i-rutile okanye i-high-titanium slag powder kunye ne-coke kwaye emva koko iqhube i-chlorination ephezulu yokushisa ukuvelisa i-titanium tetrachloride. Emva kwe-oxidation yobushushu obuphezulu, imveliso ye-titanium dioxide ifumaneka ngokucoca, ukuhlanjwa kwamanzi, ukomisa, kunye nokutyumza. Inkqubo ye-chlorination yokuveliswa kwe-titanium dioxide inokuvelisa kuphela iimveliso ze-rutile.
Indlela yokwahlula ukunyaniseka kwe-titanium dioxide?
I. Iindlela zoMzimba:
(1）Eyona ndlela ilula kukuthelekisa ukuthungwa ngokubamba. I-titanium dioxide yomgunyathi ivakala igudile, ngelixa i-titanium dioxide yokwenyani ivakala irhabaxa.
(2）Ngokuhlanjwa ngamanzi, ukuba ubeka i<em>titanium dioxide esandleni sakho, eyomgunyathi kulula ukuyihlamba, ngoxa eso yokwenene kungekho lula ukuyihlamba.
(3）Thatha ikomityi yamanzi acocekileyo kwaye uwise i-titanium dioxide kuyo. Leyo idada phezu komhlaba iyinyani, ngelixa leyo ihleli ezantsi iyinkohliso (le ndlela ayinakusebenza kwiimveliso ezisebenzayo okanye ezilungisiweyo).
(4）Jonga ukunyibilika kwayo emanzini. Ngokuqhelekileyo, i-titanium dioxide iyanyibilika emanzini (ngaphandle kwe-titanium dioxide eyenzelwe ngokukodwa iiplastiki, ii-inki, kunye ne-synthetic titanium dioxide, enganyibilikiyo emanzini).
II. Iindlela zekhemikhali:
(1) Ukuba i-calcium powder yongezwa: Ukongeza i-hydrochloric acid iya kubangela ukusabela okunamandla kunye nesandi esiqhekezayo, sihamba kunye nokuveliswa kwenani elikhulu leebhubhu (kuba i-calcium carbonate isabela nge-asidi ukuvelisa i-carbon dioxide).
(2) Ukuba lithopone yongezwa: Ukongeza dilute sulfuric acid okanye hydrochloric acid uya kuvelisa ivumba iqanda elibolileyo.
(3) Ukuba isampuli i-hydrophobic, ukongeza i-hydrochloric acid ayiyi kubangela ukusabela. Nangona kunjalo, emva kokuyimanzisa nge-ethanol kwaye emva koko yongeza i-hydrochloric acid, ukuba iibhubhu ziveliswa, kubonisa ukuba isampuli iqukethe i-calcium carbonate powder.
III. Kukho nezinye iindlela ezimbini ezilungileyo:
(1) Ngokusebenzisa ifomyula efanayo yePP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide powder, amandla angaphantsi kwezinto ezibangelwayo kukuba, i-titanium dioxide (rutile) iyinyani.
(2) Khetha i-resin ecacileyo, njenge-ABS ecacileyo kunye ne-0.5% ye-titanium dioxide powder eyongeziweyo. Ukulinganisa ukukhanya kwayo. Okuya kusezantsi ukuhanjiswa kokukhanya, kokukhona kuyinyani i-titanium dioxide engumgubo.
Ixesha lokuposa: May-31-2024
