Gịnị bụ titanium dioxide?
Isi ihe dị na titanium dioxide bụ TIO2, nke bụ agba kemịkalụ dị mkpa nke na-adịghị n'ime ihe dị ka ntụ ọcha ma ọ bụ ntụ. Ọ naghị egbu egbu, ọ na-acha ọcha ma na-enwu nke ọma, a na-ewerekwa ya dị ka agba ọcha kacha mma maka ime ka ọcha ihe dị mma. A na-ejikarị ya eme ihe n'ụlọ ọrụ dịka mkpuchi, plastik, roba, akwụkwọ, ink, seramiiki, iko, wdg.
Ⅰ.Eserese nke ụlọ ọrụ titanium dioxide:
(1）N'elu usoro mmepụta titanium dioxide, ihe ndị e ji emepụta ihe ndị dị ndụ, gụnyere ilmenite, titanium concentrate, rutile, wdg.
(2）Mmiri etiti na-ezo aka na ngwaahịa titanium dioxide.
(3) Ihe dị n'okpuru bụ ebe a na-eji titanium dioxide eme ihe.A na-eji titanium dioxide eme ihe n'ọtụtụ ebe dịka mkpuchi, plastik, imepụta akwụkwọ, ink, rọba, wdg.
Ⅱ. Nhazi kristal nke titanium dioxide:
Titanium dioxide bụ ụdị ihe mejupụtara polymorphous, nke nwere ụdị kristal atọ a na-ahụkarị n'okike, ya bụ anatase, rutile na brookite.
Ma rutile na anatase bụ akụkụ nke usoro kristal tetragonal, nke na-adịgide n'okpuru okpomọkụ nkịtị; brookite bụ akụkụ nke usoro kristal orthorhombic, nke nwere usoro kristal na-adịghị agbanwe agbanwe, yabụ ọ nweghị uru bara uru n'ụlọ ọrụ ugbu a.
N'ime usoro atọ ahụ, usoro rutile bụ nke kachasị sie ike. Usoro Anatase ga-agbanwe gaa na usoro rutile karịa 900°C, ebe usoro brookite ga-agbanwe gaa na usoro rutile karịa 650°C.
(1) Rutile phase titanium dioxide
N'ime usoro rutile titanium dioxide, atọm Ti dị n'etiti lattice kristal, atọm oxygen isii dịkwa n'akụkụ nke titanium-oxygen octahedron. Octahedron ọ bụla jikọtara ya na octahedron iri gbara ya gburugburu (gụnyere akụkụ asatọ nkekọrịta na nsọtụ abụọ nkekọrịta), molekul TiO2 abụọ na-etolite otu sel.
Ihe osise eserese nke mkpụrụ ndụ kristal nke usoro rutile titanium dioxide (aka ekpe)
Ụzọ njikọ nke titanium oxide octahedron (n'aka nri)
(2) Anatase phase titanium dioxide
N'ime usoro anatase titanium dioxide, a na-ejikọ titanium-oxygen octahedron ọ bụla na octahedron asatọ gbara ya gburugburu (akụkụ anọ nkekọrịta na akụkụ anọ nkekọrịta), ebe molekul TiO2 anọ na-etolite otu sel.
Ihe osise eserese nke mkpụrụ ndụ kristal nke usoro rutile titanium dioxide (aka ekpe)
Ụzọ njikọ nke titanium oxide octahedron (n'aka nri)
Ⅲ.Ụzọ Nkwadebe nke Titanium Dioxide:
Usoro mmepụta nke titanium dioxide gụnyere usoro sulfuric acid na usoro chlorine.
(1) Usoro asịd sọlfọ
Usoro sulfuric acid nke mmepụta titanium dioxide gụnyere mmeghachi omume acidosis nke ntụ ntụ ígwè titanium na sulfuric acid a chịkọtara iji mepụta titanium sulfate, nke a na-emezi ka ọ dị mmiri mmiri iji mepụta metatitanic acid. Mgbe a gbasasịrị ma gwerie ya, a na-enweta ngwaahịa titanium dioxide. Usoro a nwere ike imepụta anatase na rutile titanium dioxide.
(2) Usoro chlorination
Usoro itinye chlorine n'imepụta titanium dioxide gụnyere ịgwakọta ntụ ntụ rutile ma ọ bụ nke nwere oke titanium slag na coke wee mee chlorine dị elu iji mepụta titanium tetrachloride. Mgbe oxidation dị elu gasịrị, a na-enweta ngwaahịa titanium dioxide site na nzacha, ịsa mmiri, ịkpọ nkụ, na ịgweri ya. Usoro itinye chlorine n'imepụta titanium dioxide nwere ike imepụta naanị ngwaahịa rutile.
Kedu otu esi amata eziokwu nke titanium dioxide?
I. Ụzọ anụ ahụ:
(1）Ụzọ kachasị mfe bụ iji aka tụnyere udidi ya. Titanium dioxide adịgboroja na-adị nro karịa, ebe titanium dioxide dị ezigbo nro karịa.
(2）Site n'iji mmiri sachaa, ọ bụrụ na ị tinye titanium dioxide n'aka gị, ọ dị mfe ịsacha nke adịgboroja ahụ, ebe nke ezigbo ya adịghị mfe ịsacha.
(3）Were otu iko mmiri dị ọcha tụba titanium dioxide n'ime ya. Nke na-ese n'elu bụ ezigbo ya, ebe nke na-ada n'ala bụ adịgboroja (usoro a nwere ike ọ gaghị arụ ọrụ maka ngwaahịa ndị a rụgharịrị ma ọ bụ ndị a gbanwere).
(4）Lelee otú o si agbaze n'ime mmiri. N'ozuzu, titanium dioxide na-agbaze n'ime mmiri (ma e wezụga titanium dioxide nke e mere kpọmkwem maka plastik, ink, na ụfọdụ titanium dioxide sịntetik, nke na-anaghị agbaze n'ime mmiri).
II. Usoro kemịkalụ:
(1) Ọ bụrụ na etinyere ntụ calcium: Ịtinye hydrochloric acid ga-eme ka mmeghachi omume siri ike na ụda mkpọtụ, ya na mmepụta nke ọtụtụ afụfụ (n'ihi na calcium carbonate na-emeghachi omume na acid iji mepụta carbon dioxide).
(2) Ọ bụrụ na etinyere lithopone: Ịtinye sulfuric acid ma ọ bụ hydrochloric acid ga-eme ka àkwá rere ure na-esi isi.
(3) Ọ bụrụ na ihe nlele ahụ enweghị mmiri mmiri, itinye hydrochloric acid agaghị eme ka ihe meghachi omume. Agbanyeghị, mgbe e tinyere ya mmiri na ethanol wee tinye hydrochloric acid, ọ bụrụ na apụta afụ, ọ na-egosi na ihe nlele ahụ nwere ntụ calcium carbonate a kpụchara akpụ.
III. E nwekwara ụzọ abụọ ọzọ dị mma:
(1) Site n'iji otu usoro nke PP + 30% GF + 5% PP-G-MAH + 0.5% ntụ ntụ titanium dioxide, ike nke ihe a na-esi na ya apụta na-ebelata, otú ahụ ka titanium dioxide (rutile) si adị irè karị.
(2) Họrọ resin doro anya, dị ka ABS doro anya nke nwere ntụ ntụ titanium dioxide 0.5%. Tụọ ya ka ìhè ya si dị. Ka ìhè ya na-ebelata, otú ahụ ka ntụ titanium dioxide si dị ezigbo mma.
Oge ozi: Mee-31-2024
