Chii chinonzi titanium dioxide?
Chinhu chikuru chiri mu titanium dioxide iTIO2, inova pigment yakakosha yemakemikari asina kugadzirwa muchimiro chechinhu chichena chakasimba kana upfu. Haina chepfu, ine kuchena kwakanyanya uye kupenya, uye inoonekwa sepigment chena yakanakisa yekuvandudza kuchena kwezvinhu. Inoshandiswa zvakanyanya mumaindasitiri akadai sekuputira, mapurasitiki, rabha, bepa, inki, ceramics, girazi, nezvimwewo.
Ⅰ.Dhayagiramu yeketani yeindasitiri yeTitanium dioxide:
()1） Chikamu chepamusoro cheindasitiri yetitanium dioxide chine zvinhu zvakagadzirwa, zvinosanganisira ilmenite, titanium concentrate, rutile, nezvimwewo;
()2） Pakati pechinhu ichi zvinoreva zvigadzirwa zve titanium dioxide.
（3）Pazasi pane nzvimbo inoshandiswa titanium dioxide.Titanium dioxide inoshandiswa zvakanyanya muminda yakasiyana-siyana yakadai sekuputira, mapurasitiki, kugadzira mapepa, inki, rabha, nezvimwewo.
Ⅱ. Chimiro chekristaro chetitanium dioxide:
Titanium dioxide imhando ye polymorphous compound, ine mafomu matatu akafanana ekristaro, anoti anatase, rutile nabrookite.
Rutile neanatase zvese zviri mu tetragonal crystal system, izvo zvakagadzikana kana tembiricha yakajairika; brookite ndeye orthorhombic crystal system, ine chimiro chekristaro chisina kugadzikana, saka haina kukosha zvakanyanya muindasitiri parizvino.
Pakati pezvivako zvitatu izvi, rutile phase ndiyo yakagadzikana zvikuru. Anatase phase ichashanduka kuita rutile phase iri pamusoro pe900°C, nepo brookite phase ichishanduka kuita rutile phase iri pamusoro pe650°C.
(1) Rutile phase titanium dioxide
Muchikamu cherutile titanium dioxide, maatomu eTi ari pakati pekristaro, uye maatomu matanhatu eokisijeni ari pamakona etitanium-oxygen octahedron. Octahedron yega yega yakabatana nemaoctahedron gumi akakomberedza (kusanganisira mavertise masere ekugovana uye mipendero miviri yekugovana), uye mamorekuru maviri eTiO2 anoumba sero reyuniti.
Dhiyagiramu yemufananidzo wekristaro yesero retitanium dioxide (kuruboshwe)
Nzira yekubatanidza titanium oxide octahedron (kurudyi)
（2）Anatase phase titanium dioxide
Muchikamu che anatase titanium dioxide, octahedron yega yega yetitanium-oxygen yakabatana nemaoctahedron masere akakomberedza (mipendero mina inogovana uye mativi mana anogovana), uye mamorekuru mana eTiO2 anoumba sero rimwe chete.
Dhiyagiramu yemufananidzo wekristaro yesero retitanium dioxide (kuruboshwe)
Nzira yekubatanidza titanium oxide octahedron (kurudyi)
Ⅲ. Nzira dzekugadzirira Titanium Dioxide:
Maitiro ekugadzira titanium dioxide anosanganisira maitiro e sulfuric acid uye maitiro e chlorination.
(1) Maitiro eSulfuric acid
Maitiro ekugadzira titanium dioxide musulfuric acid anosanganisira acidolysis reaction yetitanium iron powder ine concentrated sulfuric acid kugadzira titanium sulfate, iyo inozobva yapiswa kuti igadzire metatitanic acid. Mushure mekupwanya nekupwanya, zvigadzirwa zvetitanium dioxide zvinowanikwa. Nzira iyi inogona kugadzira anatase uye rutile titanium dioxide.
(2) Maitiro ekugadzira chlorine
Maitiro ekugadzira titanium dioxide chlorine anosanganisira kusanganisa rutile kana high-titanium slag powder necoke wobva waita chlorine inodziya zvakanyanya kuti igadzire titanium tetrachloride. Mushure mekupiswa kwemafuta zvakanyanya, chigadzirwa chetitanium dioxide chinowanikwa kuburikidza nekusefa, kugeza nemvura, kuomesa, uye kupwanya. Maitiro ekugadzira titanium dioxide chlorine anogona chete kugadzira zvigadzirwa zve rutile.
Nzira yekusiyanisa sei chokwadi che titanium dioxide?
I. Nzira dzemuviri:
()1）Nzira iri nyore ndeyekuenzanisa magadzirirwo acho nekubata. Titanium dioxide yenhema inonzwa yakapfava, nepo titanium dioxide chaiyo ichiita seyakaomesesa.
()2）Nekusukurudza nemvura, kana ukaisa titanium dioxide paruoko rwako, rwenhema rwuri nyore kusuka, nepo rwechokwadi rwusiri nyore kusuka.
()3）Tora kapu yemvura yakachena wodonhedza titanium dioxide mairi. Inenge yayangarara pamusoro pemvura ndeyechokwadi, nepo iyo inenge yakagara pasi iri yenhema (nzira iyi ingasashanda kune zvigadzirwa zvakagadziriswa kana zvakagadziriswa).
()4）Tarisa kuti inonyungudika sei mumvura. Kazhinji, titanium dioxide inonyungudika mumvura (kunze kwetitanium dioxide yakagadzirirwa mapurasitiki, inki, uye mamwe matitanium dioxide ekugadzira, ayo asinganyungudike mumvura).
II. Nzira dzemakemikari:
(1) Kana calcium powder ikawedzerwa: Kuwedzera hydrochloric acid kunokonzera kuita kwakasimba nekurira kwekuchema, pamwe chete nekugadzirwa kwemabubbles akawanda (nekuti calcium carbonate inosangana neacid kuti ibudise carbon dioxide).
(2) Kana lithopone ikaiswa: Kuwedzera sulfuric acid yakasanganiswa kana hydrochloric acid kuchaita kuti pave nekunhuhwirira kwezai rakaora.
(3) Kana sampuli yacho isingade mvura, kuwedzera hydrochloric acid hakuzokonzere kukanganiswa. Zvisinei, mushure mekunyorovesa neethanol wozowedzera hydrochloric acid, kana mabubbles akabuda, zvinoratidza kuti sampuli yacho ine calcium carbonate powder yakaputirwa.
III. Kune dzimwe nzira mbiri dzakanaka zvakare:
(1) Nekushandisa fomura imwecheteyo yePP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide powder, simba rechinhu chinobuda rikaderera, titanium dioxide (rutile) inova yechokwadi.
(2) Sarudza resin inoonekera, yakaita seABS inoonekera ine upfu hwetitanium dioxide hwakaiswa mu 0.5%. Yera kuyerera kwayo kwechiedza. Kana kuyerera kwechiedza kwakaderera, upfu hwetitanium dioxide hunowedzera kuva hwechokwadi.
Nguva yekutumira: Chivabvu-31-2024
