Kev hloov kho tshuajnano silica
Kev hloov tshuaj ntawm Nano-SiO2 yog qhov tseem ceeb siv ntau pawg hydroxyl nyob rau ntawm Nano-SiO2 txhawm rau hloov nrog cov hloov pauv, yog li kom txo qis hydroxyl tus naj npawb, hloov hydrophilicity thiab hydrophobicity ntawm particle nto, thiab qhia sib txawv. pawg raws li qhov yuav tsum tau nthuav dav daim ntawv thov kev nthuav dav ntawm Nano-SiO2.
(1) Kev ua khub rau kev hloov kho ntawm tus neeg sawv cev
Ntawm cov kev sib txuas ua ke ntawm tus neeg sawv cev kev hloov kho ntawm nano silica, silane txuas tus neeg sawv cev yog qhov siv dav tshaj plaws, uas tuaj yeem cog lus nrog hydroxyl pab pawg nyob rau saum npoo ntawm nano silica los ua silica oxygen sib khi.
Kev hloov kho tshuaj lom neeg ntawm nano silica
Kev hloov tshuaj ntawm Nano-SiO2 yog qhov tseem ceeb siv ntau pawg hydroxyl nyob rau ntawm Nano-SiO2 txhawm rau hloov nrog cov hloov pauv, yog li kom txo qis hydroxyl tus naj npawb, hloov hydrophilicity thiab hydrophobicity ntawm particle nto, thiab qhia sib txawv. pawg raws li qhov yuav tsum tau nthuav dav daim ntawv thov kev nthuav dav ntawm Nano-SiO2.
(1) Kev ua khub rau kev hloov kho ntawm tus neeg sawv cev
Ntawm cov kev sib txuas ua ke ntawm tus neeg sawv cev kev hloov kho ntawm nano silica, silane txuas tus neeg sawv cev yog qhov siv dav tshaj plaws, uas tuaj yeem cog lus nrog hydroxyl pab pawg nyob rau saum npoo ntawm nano silica los ua silica oxygen sib khi.
Thaum tus neeg sawv cev txuas mus siv los kho qhov chaw ntawm nano silica, tus neeg sawv cev txuas lub cev yuav tsum tau txhawm dej ua ntej nws yuav hnov mob nrog nano silica. Txawm li cas los xij, hydrolyzate yuav ua rau tus kheej condense, uas thaiv qhov kev tawm tsam ntawm hydrolyzate thiab hydroxyl pawg rau ntawm saum npoo ntawm silica, rau qee yam, txo qhov ntsuas qhov ua kom muaj txiaj ntsig, thiab ua rau kev hloov kho nto ntawm nano silica tsis tiav.
(2) Cawv ester kev hloov kho hom
Txoj kev haus cawv ester yog hloov pauv qhov ntub dej ntawm silica nto los ntawm cov tshuaj tiv thaiv ntawm aliphatic cawv nrog hydroxyl pawg nyob rau saum npoo ntawm nano silica hauv qab qhov kub thiab siab.
Piv nrog rau cov txheej txheem silane txuas ntxiv, cov txheej txheem cawv ester muaj qhov zoo ntawm tus nqi qis, yooj yim synthesis thiab cov qauv tswj. Txawm li cas los xij, kev hloov pauv yog cuam tshuam los ntawm alkyl saw ntev ntawm cov dej cawv, thiab nws yuav tsum tau nqa tawm ntawm qhov kub thiab kub siab, uas yuav tsum muaj kev ua haujlwm siab.