Waa maxay titanium dioxide?
Qaybta ugu muhiimsan ee titanium dioxide waa TIO2, taas oo ah midab kiimiko ah oo muhiim ah oo aan dabiici ahayn oo ah qaab adag oo cad ama budo ah. Ma aha mid sun ah, waxay leedahay caddaan sare iyo dhalaal, waxaana loo tixgeliyaa midabka cad ee ugu fiican ee hagaajinta cadaanka walxaha. Waxaa si weyn looga isticmaalaa warshadaha sida dahaarka, balaastikada, caag, warqad, khad, ceramics, galaas, iwm.
Ⅰ.Jaantuska silsiladda warshadaha ee titanium dioxide:
(1）The sare ee silsilad warshadaha dioxide titanium ka kooban yahay alaabta ceeriin, oo ay ku jiraan ilmenite, titanium xoogga saaray, rutile, iwm;
(2）Dhinaca dhexe waxa loola jeedaa alaabada titanium dioxide.
(3)Dhulka hoose waa goobta codsiga ee titanium dioxide.Titanium dioxide si weyn ayaa looga isticmaalaa meelo kala duwan sida dahaarka, balaastikada, waraaqaha, khad, caag, iwm.
Ⅱ. Qaab dhismeedka crystal of titanium dioxide:
Titanium dioxide waa nooc ka mid ah isku-dhafka polymorphous, kaas oo leh saddex nooc oo crystal ah oo dabiici ah, kuwaas oo kala ah anatase, rutile iyo brookite.
Rutile iyo anatase labaduba waxay ka tirsan yihiin nidaamka crystal tetragonal, kuwaas oo ku xasilloon heerkulka caadiga ah; brookite waxaa iska leh nidaamka crystal orthorhombic, oo leh qaab dhismeed crystal aan degganayn, sidaa darteed waxa ay leedahay qiimo yar oo wax ku ool ah warshadaha hadda.
Saddexda qaab-dhismeed ka mid ah, wejiga rutile waa kan ugu xasilloon. Marxaladda Anatase waxay si aan leexleexad lahayn u beddeli doontaa weji rutile oo ka sarreeya 900 ° C, halka wejiga brookite uu si aan ka noqosho lahayn u beddeli doono weji rutile oo ka sarreeya 650 ° C.
(1) Wajiga rutile titanium dioxide
Marxaladda rutile titanium dioxide, atomyada Ti waxay ku yaalaan bartamaha shabagga crystal, iyo lix atamka oksijiin waxay ku yaalaan geesaha titanium-oxygen octahedron. Octahedron kasta waxa uu ku xidhan yahay 10 octahedrons ku wareegsan (ay ku jiraan siddeed geesood oo wadaag ah iyo laba geesood oo wadaag ah), iyo laba unug oo TiO2 ah ayaa sameeya unug unug.
Jaantuska jaantuska unugga crystal ee wajiga rutile titanium dioxide (bidix)
Habka isku xirka ee titanium oxide octahedron (midig)
(2) Anatase wajiga titanium dioxide
Marxaladda anatase titanium dioxide, titanium-oxygen octahedron kasta waxa uu ku xidhan yahay 8 ku xeeran octahedrons (4 geesaha wadaaga ah iyo 4 geesaha wadaaga), iyo 4 TiO2 molecules waxay sameeyaan unug unug.
Jaantuska jaantuska unugga crystal ee wajiga rutile titanium dioxide (bidix)
Habka isku xirka ee titanium oxide octahedron (midig)
Ⅲ.Qaabka Diyaarinta Titanium Dioxide:
Habka wax soo saarka ee titanium dioxide inta badan waxaa ku jira habka sulfuric acid iyo habka koloriinta.
(1) Habka sulfuric acid
Habka sulfuric acid ee wax soo saarka titanium dioxide waxay ku lug leedahay falcelinta acidolysis ee budada birta titanium leh sulfuric acid si ay u soo saarto titanium sulfate, kaas oo markaa la hydrolyzed si loo soo saaro metatitanic acid. Calcination iyo burburin ka dib, alaabta titanium dioxide ayaa la helaa. Habkani wuxuu soo saari karaa anatase iyo rutile titanium dioxide.
(2) Habka koloriinta
Habka koloriinaynta ee wax soo saarka titanium dioxide waxay ku lug leedahay isku-darka rutile ama budada slag-titanium-sare leh kookaha ka dibna la qaado koloriin heerkul sare ah si loo soo saaro titanium tetrachloride. oksaydhka heerkulka sare ka dib, sheyga titanium dioxide waxaa lagu helaa sifaynta, biyaha dhaqida, qalajinta, iyo burburinta. Habka koloriinta ee wax soo saarka titanium dioxide ayaa soo saari kara oo kaliya alaabada rutile.
Sida loo kala saaro xaqiiqada titanium dioxide?
I. Hababka Jirka:
(1)Habka ugu fudud ayaa ah in la isbarbardhigo nuxurka taabashada. titanium dioxide been abuur ah ayaa dareemaya jilicsanaan, halka titanium dioxide dhabta ah uu dareemo qallafsanaan.
(2)Adigoo ku luqluqaya biyo, haddii aad gacantaada saarto xoogaa titanium dioxide ah, kan been abuurka ah waa ay fududahay in la iska dhaqo, halka midka dhabta ahna aysan sahlaneyn in la iska dhaqo.
(3)Qaado koob biyo nadiif ah oo ku rid titanium dioxide gudaha. Midka dusha sare ku dul sabbaynaya waa run, halka kan gunta hoos fadhiyaa uu yahay been abuur (habkan waxa laga yaabaa in aanu u shaqayn wax-soo-saarka ama wax-ka-beddelka).
(4)Hubi inay ku milmayaan biyaha. Guud ahaan, titanium dioxide waxay ku milmi kartaa biyaha (marka laga reebo titanium dioxide si gaar ah loogu talagalay balaastikada, khadadka, iyo qaar ka mid ah titanium dioxide, kuwaas oo aan biyo ku milmin).
II. Hababka kiimikada:
(1) Haddii budada calcium lagu daro: Ku darida hydrochloric acid waxay keeni doontaa falcelin xoog leh oo leh dhawaaq qaylo ah, oo ay la socoto soo saarista xumbo badan (maxaa yeelay calcium carbonate waxay la falgashaa acid si ay u soo saarto carbon dioxide).
(2) Haddii lithopone lagu daro: Ku darida sulfuric acid ama hydrochloric acid waxay soo saari doontaa urta ukunta qudhuntay.
(3) Haddii muunadku yahay hydrophobic, ku darida hydrochloric acid ma keenayso falcelin. Si kastaba ha noqotee, ka dib marka lagu qooyo ethanol ka dibna lagu daro hydrochloric acid, haddii xumbo la soo saaro, waxay caddaynaysaa in muunadku ka kooban yahay budada kaalshiyamka carbonate dahaarka leh.
III. Waxa kale oo jira laba hab oo kale oo wanaagsan:
(1) Adigoo isticmaalaya qaacido isku mid ah PP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide budada, hoos u dhaca xoogga walxaha ka dhashay, ayaa ka sii dhab ah titanium dioxide (rutile) waa.
(2) Dooro resin hufan, sida ABS hufan oo 0.5% titanium dioxide lagu daray. Cabbir gudbintiisa iftiinka. Hooska gudbinta iftiinka ayaa ah, inta badan oo run ah budada dioxide titanium waa.
Waqtiga boostada: Meey-31-2024
