Silica gel desiccant yog lub cev adsorption desiccant es tsis muaj tshuaj lom neeg cov tshuaj lom neeg noo noo nqus dej desiccant, thiab silica gel tsuas yog FDA pom zoo desiccant raw cov ntaub ntawv uas tuaj yeem ncaj qha rau cov zaub mov thiab chaw muag tshuaj. Piv nrog rau lwm cov desiccants, silica gel desiccants muaj kev nyab xeeb rau kev siv hauv cov khoom noj tiv thaiv kev ya raws. Yog li koj puas paub yog tias silica gel desiccant tuaj yeem tsim dua tshiab? Hnub no, cia' s ua tibzoo saib seb qhov silica gel desiccant yuav rov ua dua tshiab los tau.
1. Kev tsim kho tom qab silica gel adsorbs cov dej nqus: Tom qab silica gel adsorbs cov dej, nws tuaj yeem tshem tawm los ntawm thermal desorption. Muaj ntau txoj hauv kev cua sov, xws li hluav taws xob cua sov, nplaim taws kub thiab cua kub kom qhuav. Nws yog qhov tsim nyog los tswj qhov kub ntawm de-ntxiv cov cua sov ntawm 1 20 - 1 80 ° C. Rau qhov taw qhia cov kua nplaum xiav, hloov xim silica, thiab DL xiav silica gel, nws tsim nyog tswj 1 00 - 1 20 ° C. Qhov kub siab tshaj plaws thaum lub sij hawm tsim dua tshiab ntawm ntau cov kua roj zeb silica tsis pub tshaj li cov kev txwv hauv qab no: coarse-pored silica gels yuav tsum tsis pub tshaj 600 ° C ; nplua-pored silica gels yuav tsum tsis pub ntau tshaj 200 ° C; Qhov taw qhia xiav gel (los yog tso kua silica gel) yuav tsum tsis pub ntau tshaj 1 20 ° C; silicon aluminium Cov kua nplaum yuav tsum tsis muaj qhov siab tshaj li ntawm 350 ° C. Tom qab silica gel rov qab, nws cov dej noo feem ntau tswj tau hauv qab 2% thiab nws tuaj yeem tso rov qab siv.
2. Cov teeb meem xav tau kev saib xyuas thaum siv silica gel dua:
(1) Thaum lub tshuab hluav taws xob rov qab silica, silica gel kub yuav ua rau muaj kev hloov pauv hauv cov pore qauv thiab txo nws cov adsorption effect, cuam tshuam tus nqi. Rau qhov ntsuas xiav xiav silica gel lossis hloov kho, qhov kev tsim kho kub rov qab yuav tsum tsis pub tshaj 1 20 deg.] C, txwv tsis pub lawv yuav maj mam poob xim xim tus neeg sawv cev oxidized xim-txhim kho kev ua.
(2) tom qab tsim cov tshuaj silica feem ntau yuav tsum sieved tshem cov zoo kom cov hais kom zoo ib yam. Bi qhov chaw Zhengzhou qhib silica gel nyob rau hauv chav kawm ntawm nruab nrab los ntawm adsorption ntawm cov dej vapor lossis lwm yam organic tshuaj, muaj peev xwm adsorption poob qis, tuaj yeem rov siv dua tom qab tsim dua tshiab los ntawm.