Gịnị bụ titanium dioxide?
Akụkụ bụ isi nke titanium dioxide bụ TIO2, nke bụ ihe dị mkpa kemịkalụ kemịkalụ kemịkalụ n'ụdị siri ike na-acha ọcha ma ọ bụ ntụ ntụ. Ọ naghị egbu egbu, nwere oke ọcha na nchapụta, a na-ewerekwa ya dị ka pigmenti ọcha kacha mma maka imeziwanye ọcha ihe. A na-ejikarị ya eme ihe na ụlọ ọrụ dịka mkpuchi, plastik, rọba, akwụkwọ, ink, ceramik, iko, wdg.
Ⅰ.Ihe eserese ụlọ ọrụ titanium dioxide:
(1） The elu nke titanium dioxide ụlọ ọrụ yinye mejupụtara akụrụngwa, gụnyere ilmenite, titanium uche, rutile, wdg;
(2) Midstream na-ezo aka na ngwaahịa titanium dioxide.
(3) Ebe mgbada bụ mpaghara ngwa nke titanium dioxide.A na-eji titanium dioxide eme ihe n'ọtụtụ ebe dị iche iche dịka mkpuchi, plastik, ime akwụkwọ, ink, roba, wdg.
Ọdịdị kristal nke titanium dioxide:
Titanium dioxide bụ ụdị ogige polymorphous, nke nwere ụdị kristal atọ a na-ahụkarị na okike, ya bụ anatase, rutile na brookite.
Ma rutile na anatase bụ nke sistemu tetragonal crystal, nke kwụsiri ike n'okpuru ọnọdụ okpomọkụ; brookite bụ nke sistemụ kristal orthorhombic, nke nwere usoro kristal na-adịghị akwụsi ike, yabụ na ọ nweghị uru bara uru na ụlọ ọrụ ugbu a.
N'ime usoro atọ ahụ, usoro rutile bụ nke kachasị kwụsiri ike. Oge anatase ga-agbanwe n'enweghị mgbagha ka ọ bụrụ rutile rutile n'elu 900ºC, ebe usoro brookite ga-agbanwe n'enweghị mgbagha ka ọ bụrụ usoro rutile karịa 650°C.
(1) Titanium dioxide rutile frasi
Na rutile frasi titanium dioxide, Ti atọm dị n'etiti etiti kristal lattice, na ikuku oxygen isii dị na nkuku titanium-oxygen octahedron. Ejikọtara octahedron ọ bụla na octahedron 10 gbara ya gburugburu (gụnyere vertices nkekọrịta asatọ na akụkụ abụọ nkekọrịta), na mkpụrụ ndụ TiO2 abụọ na-etolite otu cell.
Eserese eserese nke sel kristal nke rutile frasi titanium dioxide (aka ekpe)
Usoro njikọ nke titanium oxide octahedron (n'aka nri)
(2) Anatase frasi titanium dioxide
N'ime oge anatase titanium dioxide, titanium-oxygen octahedron nke ọ bụla jikọtara ya na octahedrons 8 gbara ya gburugburu (akụkụ akụkụ 4 na akụkụ 4 nkekọrịta), na molecules 4 TiO2 na-etolite otu cell.
Eserese eserese nke sel kristal nke rutile frasi titanium dioxide (aka ekpe)
Usoro njikọ nke titanium oxide octahedron (n'aka nri)
Ⅲ.Ụzọ Nkwadebe nke Titanium Dioxide:
Usoro mmepụta nke titanium dioxide na-agụnye usoro sulfuric acid na usoro chlorination.
(1) Usoro sulfuric acid
Usoro sulfuric acid nke mmepụta titanium dioxide gụnyere mmeghachi omume acidolysis nke titanium ígwè ntụ ntụ na sulfuric acid gbadoro anya iji mepụta titanium sulfate, nke a na-emezi hydrolyzed iji mepụta acid metatitanic. Mgbe calcination na ngwepịa, a na-enweta ngwaahịa titanium dioxide. Usoro a nwere ike ịmepụta anatase na rutile titanium dioxide.
(2) Usoro chlorination
Usoro chlorination nke mmepụta titanium dioxide gụnyere ịgwakọta rutile ma ọ bụ nnukwu titanium slag ntụ ntụ na coke wee mee chlorination dị elu iji mepụta titanium tetrachloride. Mgbe oxidation okpomọkụ dị elu, a na-enweta ngwaahịa titanium dioxide site na nzacha, ịsacha mmiri, ihicha, na nchicha. Usoro chlorination nke mmepụta titanium dioxide nwere ike imepụta ngwaahịa rutile naanị.
Kedu ka esi amata ịdị adị nke titanium dioxide?
I. Ụzọ anụ ahụ:
(1)Ụzọ kachasị mfe bụ iji tụnyere ederede site na aka. titanium dioxide adịgboroja na-enwe mmetụta dị nro, ebe ezigbo titanium dioxide na-enwe mmetụta karịa.
(2)Site na ịsacha mmiri, ọ bụrụ na ị na-etinye titanium dioxide n'aka gị, nke adịgboroja dị mfe ịsacha, ebe ezi adịghị adị mfe ịsacha.
(3)Were otu iko mmiri dị ọcha tinye titanium dioxide n'ime ya. Nke na-ese n'elu elu bụ ezigbo, ebe onye na-edozi na ala bụ adịgboroja (usoro a nwere ike ọ gaghị arụ ọrụ maka ngwaahịa ndị na-arụ ọrụ ma ọ bụ gbanwee).
(4)Lelee solubility ya na mmiri. N'ozuzu, titanium dioxide na-agbaze n'ime mmiri (ma e wezụga titanium dioxide emebere ya maka plastik, inks, na ụfọdụ titanium dioxide sịntetik, nke na-adịghị edozi na mmiri).
II. Ụzọ kemịkalụ:
(1) Ọ bụrụ na a na-agbakwunye ntụ ntụ calcium: Ịgbakwunye hydrochloric acid ga-eme ka mmeghachi omume siri ike na ụda ụda, na-esonyere mmepụta nke ọnụ ọgụgụ buru ibu (n'ihi na calcium carbonate na-emeghachi omume na acid iji mepụta carbon dioxide).
(2) Ọ bụrụ na agbakwunyere lithopone: Ịtinye sulfuric acid dilute ma ọ bụ hydrochloric acid ga-emepụta isi akwa rere ure.
(3) Ọ bụrụ na sample bụ hydrophobic, ịgbakwunye hydrochloric acid agaghị eme ka mmeghachi omume. Otú ọ dị, mgbe a na-agbanye ya na ethanol ma tinyezie hydrochloric acid, ọ bụrụ na a na-emepụta afụ, ọ na-egosi na ihe nlele ahụ nwere calcium carbonate ntụ ntụ.
III. E nwekwara ụzọ abụọ ọzọ dị mma:
(1) Site n'iji otu usoro nke PP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide ntụ ntụ, na-ebelata ike nke ihe na-esi na ya pụta, otú ahụ ka titanium dioxide (rutile) bụ ihe ziri ezi.
(2) Họrọ resin transperent, dị ka transperent ABS na 0.5% titanium dioxide ntụ ntụ agbakwunyere. Tulee nnyefe ọkụ ya. N'ịbụ nke dị ala na-ebufe ọkụ, otú ahụ ka ọ bụ ntụ ntụ titanium dioxide bụ eziokwu.
Oge nzipu: Mee-31-2024
