Raws li cov txheej txheem tseem ceeb rau kev hloov pauv kev sib tshuam ntawm cov khoom siv tsis zoo thiab cov organic matrices, titanate coupling cov neeg ua haujlwm tau ua tiav cov txiaj ntsig tseem ceeb hauv xyoo tas los no hauv thaj chaw xws li kev tsim cov molecular, kev nthuav dav, thiab kev npaj ntsuab, muab kev txhawb zog rau kev txhim kho kev ua tau zoo thiab txuas ntxiv rau daim ntawv thov ntawm cov khoom sib xyaw.
Nyob rau theem tsim qauv molecular, cov kws tshawb fawb tau ua tiav lub hom phiaj kev ua kom zoo ntawm kev ua haujlwm, huab cua tiv thaiv, thiab kev sib raug zoo los ntawm kev tswj hwm kev sib koom ua ke ntawm lub hauv paus titanium atom thiab cov qauv ntawm cov pawg ester nyob ib puag ncig. Cov tshuaj monoalkoxy titanates tseem siv dav vim lawv cov kev ua haujlwm siab thiab kev sib txuas yooj yim, tab sis lawv nquag ua rau hydrolysis thiab deactivation nyob rau hauv cov av ntub lossis siab - qhov kub thiab txias. Txhawm rau daws qhov kev txwv no, chelating thiab kev sib koom ua ke tau dhau los ua cov ntsiab lus kub- qhia chelating ligands xws li -diketones thiab acetylacetones tuaj yeem tsim muaj tsib- lossis rau - cov nplhaib koom nrog, tiv thaiv cov chaw nucleophilic zoo, qhov chaw thermal stability thiab titanium. Qee cov khoom tseem tuaj yeem tswj tau ntau dua 90% kev ua haujlwm ntawm 85℃thiab 90% txheeb ze av noo. Tsis tas li ntawd, los ntawm kev grafting ntev -chain alkyl pawg, cov pab pawg muaj ntxhiab hydrocarbon, lossis cov pab pawg ua haujlwm zoo (xws li pawg epoxy thiab cov txiv neej anhydride), kev sib txuam meej tuaj yeem ua tiav nrog polyolefins, engineering plastics, thiab resin systems uas yuav tsum tau koom nrog hauv kev kho cov tshuaj tiv thaiv, paub txog molecular{13} "4} theem ntawm cov organic.
Innovations nyob rau hauv cov txheej txheem synthesis tau tsav lub loj -scale npaj ntawm siab -kev ua tau zoo titanates. Cov txheej txheem tshuaj hnyav ib txwm raug kev txom nyem los ntawm kev siv cov kuab tshuaj organic siab thiab muaj cov pa phem ntau. Kev tshawb fawb tsis ntev los no tau tsom mus rau cov kuab tshuaj-dawb synthesis, microwave-pab cov tshuaj tiv thaiv, thiab bio-raws li raw khoom hloov. Piv txwv li, siv cov kua qaub-catalyzed transesterification cov tshuaj tiv thaiv tuaj yeem ua tiav kev hloov pauv ntawm tetraalkyl titanate esters thiab fatty acids nyob rau hauv cov kuab tshuaj-dawb tej yam kev mob, ua kom cov qoob loo ntau dua 92%. Microwave hluav taws xob thev naus laus zis, los ntawm kev txhim kho molecular kev sib tsoo zaus, txo lub sijhawm cov tshuaj tiv thaiv los ntawm ob peb teev mus rau kaum feeb, txo kev siv hluav taws xob los ntawm kwv yees li 40%. Hloov roj av-raws li raw cov ntaub ntawv nrog cov nroj tsuag- muab cov fatty acids nyob rau hauv lub synthesis ntawm ester segments tsis tsuas yog txo cov pa roj carbon hneev taw tab sis kuj endows cov khoom nrog zoo biocompatibility, nteg lub hauv paus rau siab - kawg daim ntaub ntawv xws li tshuaj ntim thiab khoom noj khoom haus.
Kev tshawb fawb nthuav dav tau tawg los ntawm tib lub hom phiaj ntawm kev hloov pauv hloov pauv ib txwm muaj. Cov kev tshawb pom tsis ntev los no qhia tau hais tias qee qhov titanate esters tuaj yeem txhim kho cov nplaim hluav taws xob ib txhij (txhim kho cov pa oxygen nce 15%-20%), thermal conductivity (thermal conductivity nce ntau dua 30%), thiab hluav taws xob rwb thaiv tsev ntawm cov ntaub ntawv sib xyaw los ntawm kev tswj cov khoom sib cais thiab kev cuam tshuam ntawm kev ntxhov siab, G5 ua rau pom lub zog tshiab hauv kev sib txuas lus hauv teb. dissipation Cheebtsam. Tsis tas li ntawd, ntse-tej titanate ester coupling cov neeg sawv cev tau tshwm sim raws li kev taw qhia tshiab; lawv cov qauv molecular tuaj yeem kho qhov sib txuas sib txuas ntawm lub zog raws li kev hloov pauv hauv qhov kub thiab txias, pH, lossis lub teeb, muab cov tswv yim tshiab rau kev txhim kho cov khoom sib xyaw ua ke.
Txawm hais tias kev tshawb fawb tau ua tiav qee qhov kev ua tiav, titanate ester coupling cov neeg ua haujlwm tseem xav tau kev tshawb nrhiav ntxiv nyob rau hauv cov nqe lus ntawm kev ruaj ntseg ntev -lub sij hawm nyob rau hauv huab ib puag ncig, qis- nqi loj - nplai npaj, thiab ib puag ncig tus phooj ywg thoob plaws hauv lawv lub neej tag nrho. Nyob rau hauv lub neej yav tom ntej, kev sib koom ua ke ntawm molecular simulation nrog kev txawj ntse, ntsuab catalysis technology, thiab interdisciplinary daim ntawv thov kev tshawb fawb yuav ntxiv txhawb lawv txoj kev loj hlob mus rau kev ua tau zoo, multifunctionality, thiab sustainability, tsis tu ncua empowering innovation nyob rau hauv cov ntaub ntawv tshiab kev lag luam.
