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Titanium tetraisopropanolate(Tetraisopropyl Titanate), CAS 546-68-9, chinhu chakakosha che organotitanium uye chinoshandiswa zvakanyanya mumaindasitiri, sainzi yezvinhu nezvimwe. Iye zvino ngatitarisei chigadzirwa ichi.

Ruzivo rwekutanga

Hunhu hwepfungwa dzemuviri

Chitarisiko uye mamiriro: Pakupisa kwemumba, imvura inoonekera isina ruvara kusvika yero yakachenuruka ine hwema hunorwadza (hwakafanana nealcohols kana ethers).

Kunyunguduka: Inonyungudika nyore nyore muzvinhu zvinonyungudutsa, inopindirana nemvura zvine simba - inokurumidza kunyungudika kuita titanium dioxide (TiO₂) precipitate uye isopropyl alcohol ((CH₃)₂CHOH), saka inofanira kuchengetwa uye kushandiswa munzvimbo yakaoma.

Pokufashaira uye pokunyunguduka: Pokufashaira inenge 220-224℃ (pakumanikidzwa kwakajairika), uye pokunyunguduka inenge 14℃ (inogona kuoma pasi pe14℃ uye inogona kunyunguduka zvakare kana yadziiswa).

Kugadzikana: Inonzwa kumhepo, inonwisa hunyoro kubva mumhepo uye inonyungudika. Inogona kuora kana tembiricha yakakwira yoburitsa magasi anotsamwisa.

Mashandisirwo makuru

Kushandiswa kwetitanium tetraisopropanolate kunoenderana zvikuru nehunhu hwayo hutatu hukuru: nyore kushandisa hydrolysis kugadzira titanium dioxide, kugona kushanda zvakanaka kweorganic, uye catalytic activity. Titanium tetraisopropanolate inoshandiswa zvakanyanya muminda yakawanda yakadai sekugadzira zvinhu, maindasitiri catalysis, coatings, uye glues. Mamiriro chaiwo ekushandiswa ndeaya anotevera.

I. Kugadzirwa kwezvinhu: Core se "titanium dioxide precursor"

Uku ndiko kushandiswa kukuru kwetitaniv Isopropox IDE. Nekushandisa mukana wehydrolysis reaction yayo, zvinhu zvetitanium dioxide (TiO₂) zvemhando dzakasiyana uye hunhu hwakasiyana zvinogona kugadzirwa nemazvo kuti zvigutse zvinodiwa zvakasiyana-siyana.

Kugadzirira kwe nano-titanium dioxide

Titanium(IV) isopropoxideinonyungudutswa mu organic solvent kuburikidza ne "sol-gel method", uye yozonyungudutswa zvishoma nezvishoma pasi pemamiriro ezvinhu anodzorwa (kugadzirisa pH, tembiricha, uye hydrolysis rate) kuti igadzire "sol" yakafanana. Mushure mekuomeswa uye calcination, nano-scale titanium dioxide powder kana firimu inowanikwa. Rudzi urwu rwe nano-tio ₂ rune nzvimbo yepamusoro chaiyo uye basa rakanaka re photocatalytic, uye rinogona kushandiswa ku:

Zvinhu zvinogadzira chiedza chezuva: kuchenesa tsvina yetsvina (kusvibisa zvinhu zvipenyu), kuchenesa mhepo (kuparadza formaldehyde neVOC);

Zvizoro zvekudzivirira zuva: Titanium tetraisopropanolate semushonga wekudzivirira zuva (nano-tio ₂ inogona kuratidza mwaranzi ye ultraviolet, ine kujeka kwakanyanya uye haichenuki);

Zvinhu zvemagetsi: Titanium tetraisopropanolate yekugadzira layer inonwisa chiedza yemasero ezuva uye firimu rakatetepa rezvishandiso zve liquid crystal display.

Kupfeka kweCeramic negirazi

Isopropoxide yeTitanium(IV) inosanganiswa nezvimwe zvinowedzera (zvakadai se silane coupling agents) kuti igadzire coating solution, iyo inozopfapfaidzwa kana kunyikwa pamusoro pe ceramics negirazi. Mushure mekudziya nekupora, TiO₂ inogadzirwa ne hydrolysis ye tetraisopropyl titanate inoumba coating yakajeka ine kuomarara kwakanyanya, kuramba kupisa kwakanyanya uye kuramba kupfeka, iyo inogona:

Wedzera kuramba kusviba kwemidziyo yeceramic uye zvinhu zvekugezera (deredza kunamira kwemavara emafuta);

Wedzera simba rekudzivirira magirazi (senge girazi rekudzivirira sikirini yefoni, girazi remotokari);

Girazi rekupa girazi rine basa re "kuzvichenesa" (richishandisa hunhu hweTiO₂ hwe photocatalytic kuodza guruva repamusoro nemavanga).

Kugadzirwa kwezvinhu zvinoshanda zvakavakirwa pa titanium

Sechitubu chetitanium, inosangana pamwe chete nemimwe munyu wesimbi (yakadai sealuminium salts ne zirconium salts) kugadzira titanium-aluminium composite oxides, titanium-zirconium solid solutions nezvimwe zvinhu, zvinoshandiswa mu ceramics dzinopisa zvakanyanya uye catalyst carriers (kusimbisa kugadzikana uye nzvimbo chaiyo yenzvimbo dzinotakura).

II. Munda weKugadzirisa Maindasitiri: Maitiro anoshanda ekugadzirisa mabhakitiriya eorganic

Zvichienderana nekugona kwe empty d orbital coordinate kwe central titanium atomu (Ti⁴⁺), Titanium IV Isopropox IDE cas 546-68-9 inobatsira zvikuru pakuita zvakasiyana-siyana zve organic reactions, kunyanya zvakakodzera mumamiriro ezvinhu anoda sarudzo yepamusoro uye maitiro akaderera:

Zvinokonzera esterification uye transesterification reactions

Pakugadzira ma polyester resins (akadai sePET nePBT), kutsiva ma acidic catalysts echinyakare (akadai se sulfuric acid) kunogona kukurumidzisa esterification reaction pakati pe carboxylic acids nema alcohols, kuderedza zvimwe zvinhu (zvakadai sekushaya mvura mumuviri wema alcohols), uye catalyst iri nyore kupatsanurwa kubva kune zvigadzirwa, nokudaro ichivandudza kuchena kwe resin.

Titaniumiv isopropoxide cas 546-68-9Inobatsira pakuita transesterification reactions (sekuita kwema esters akaderera ane alcohols akawanda kuti agadzire ma esters akakwira) mukugadzirwa kwemaflavour nezvinonhuwira uye mishonga yemishonga, zvichiwedzera kushanda zvakanaka kwe reaction uye goho rezvigadzirwa.

Kusarudza catalysis mukugadzirwa kwezvinhu zvakasikwa

Titanium tetraisopropanolate, sechikamu chikuru che "titanium catalytic system" (sekunge yakabatanidzwa nemaesters etartrate), inoshandiswa mukuita asymmetric epoxidation reactions (yekugadzira chiral epoxides, key pharmaceutical intermediates);

titanium(IV) isopropoxide inokurudzira aldol condensation reactions uye inodzora nemazvo chimiro chechigadzirwa, zvichiita kuti chikodzere indasitiri yemakemikari akanaka.

III. Nzvimbo yeKuputira neKunamira: Kuvandudza mashandiro ekushandisa zvinhu

Nekushandisa mukana we "bridge rayo re "organic-inorganic" (rimwe divi rakabatana nezvinhu zvisina organic uye rimwe divi rakabatana nezvinhu zveorganic), kunamira uye kugara kwenguva refu kwezvipfeko nezvinonamira zvinogona kuvandudzwa:

Indasitiri yeCoatings: Vamiririri veCrosslinking uye vanokurudzira kunamatira

Kuwedzera huwandu hushoma hwe tetraisopropyl titanate kune acrylic coatings uye polyurethane coatings, boka re isopropoxy rinogona kuita ne hydroxyl (-OH) uye carboxyl (-COOH) mapoka ari mu coatings kuti vagadzire chimiro chakabatana, nokudaro zvichiwedzera kuramba kwemamiriro ekunze (kuramba kweUV), kuramba mvura uye kuomarara kwe coatings.

Iyo primer yesimbi dzakadai sesimbi nealuminium alloy, ichisimudzira kunamira kwependi pamusoro pesimbi uye ichideredza kudonha uye ngura kwependi.

Indasitiri ye namira: Kuvandudza simba rekubatanidza

Titanium tetraisopropanolate inoshandiswa se "coupling agent" muma epoxy resin adhesives uye silicone adhesives. Imwe mugumo unosangana nema hydroxyl groups pamusoro pezvinhu zvisingasanganisike zvakaita sesimbi neceramics, uye imwe mugumo unosangana nema organic polymer chains ema glues. Inowedzera simba rekubatanidza uye hunyoro uye kuramba kupisa kwema glues kune zvinhu zvisingasanganisike (senge pakurongedza nekubatanidza zvikamu zvemagetsi).

IV. Zvimwe zvinangwa zvakakosha

Kurapa pamusoro pesimbi

Titanium tetraisopropanolate inoshandiswa pakurapa aruminiyamu nemagnesium alloys kuti isashandise pamusoro pechinhu. TiO₂ inogadzirwa nehydrolysis ye tetraisopropyl titanate inoumba firimu re composite passivation rine oxide pamusoro pesimbi, zvichiita kuti simbi isashandise ngura (zvichitsiva chromate passivation yechinyakare uye zvichiva neushamwari kune zvakatipoteredza).

Kugadzirira zvinhu zvemaziso

Kuburikidza ne "chemical vapor deposition (CVD)" tekinoroji, utsi hwe tetraisopropyl titanate hunopinzwa mukamuri re reaction, uko hunoora pamusoro pe substrate (senge quartz glass) kuti hugadzire mafirimu eTiO₂, anoshandiswa kugadzira mafirita e optical uye ma coatings anodzivirira kupenya (ekugadzirisa kufambiswa kwechiedza).

Indasitiri yemachira: Vagadziri vemachira vanoshanda zvakanaka

Titanium(IV) isopropoxideInosangana nemapoka ehydroxyl pamusoro pemachira emucheka kuti igadzire firimu reTiO₂ pamusoro pemachira, zvichiita kuti jira rive nehunhu hwemabhakitiriya (richishandisa simba reTiO₂ rekugadzira mabhakitiriya) uye kusadzivirira UV (senge mumachira anodzivirira zuva panze).