Ua ntej, lub tswvyim
Adsorbent: Nws yog feem ntau hu ua desiccant raw khoom thiab yog cov khoom tseem ceeb ntawm desiccant. Nws absorbs dej molecules nyob rau hauv cov huab cua los ntawm nws lub cev los yog tshuaj adsorption.
Cov khoom ntim: Rau lub hnab desiccant, cov khoom siv ua lub hnab ntim cov ntaub ntawv raw yuav tsum muaj qee yam roj permeability thiab plua plav pov thawj, thiab qee zaum, nws yuav tsum muaj qee yam khoom tsis muaj dej.
Silica gel: nquag adsorbent, pob tshab los yog translucent spherical, siab mechanical zog, tsawg plua plav, nyab xeeb thiab tsis muaj tshuaj lom, tab sis tsis degradable, cov txheej txheem ntau lawm yuav ua rau ib puag ncig. Nyob rau xyoo tas los no, cov teb chaws tsim kho tau maj mam txwv lossis txwv tsis pub siv.
Montmorillonite: tseem hu ua av nplaum thiab bentonite, nws yog cov ntxhia hauv ntuj. Raws li ib tug desiccant, montmorillonite yog irregular granules nrog ntau yam xim, muaj kev nyab xeeb thiab ib puag ncig tus phooj ywg. Nws yog hom tshiab desiccant.
Relative Humidity: Qhov feem pua ntawm cov dej vapor ceev hauv huab cua thiab cov dej saturated vapor ntom ntawm tib qhov kub yog hu ua "kwv yees av" ntawm huab cua. Lub degree ntawm dryness thiab humidity ntawm huab cua yog txuam nrog rau cov degree ntawm saturation ntawm cov dej vapor muaj nyob rau hauv cov huab cua, thiab tsis ncaj qha mus rau lub kiag li tus nqi ntawm cov dej vapor muaj nyob rau hauv cov huab cua. Cov cim qhia ntawm cov av noo yog RH.
Kev nqus dej noo: Qhov sib piv ntawm qhov hnyav ntawm lub desiccant absorbed los ntawm dej vapor rau nws tus kheej qhov hnyav ntawm qhov kub thiab txias thiab txheeb ze av noo, qhia raws li feem pua.
Dej vapor kis tus nqi: Lub peev xwm ntawm ib pob khoom ntawm ib chav tsev kom dhau dej vapor nyob rau hauv ib lub sij hawm ntawm lub sij hawm, feem ntau qhia nyob rau hauv grams ib square meter ib hnub twg, piv txwv li g / m2 / d.
UNIT: "unit", thaum nyob rau ntawm (23 ± 2) degree C thiab 40% txheeb ze av noo nyob rau hauv cov huab cua, qhov nqus dej vapor tuaj yeem ncav cuag yam tsawg kawg 6.0g ntawm tus nqi ntawm desiccant raws li "ib qho unit" desiccant. Tus naj npawb ntawm desiccant units yog tag nrho cov nyiaj ntawm lub hnab desiccant noo noo nqus.
Qhov thib ob, txoj cai
Lub hauv paus ntsiab lus ntawm silica gel absorption: Lub ntsiab ntawm silica gel yog silica. Cov txheej txheem silica gel muaj cov qauv microporous tshwj xeeb nrog qhov nruab nrab pore txoj kab uas hla mus txog 24A. Nws cov qauv zoo ib yam li daim txhuam cev. Nws muaj interconnected pores. Lub capillary adsorption system ntawm thaj chaw saum npoo muaj kev sib raug zoo rau cov dej molecules. Nws cov qauv microporous tuaj yeem adsorb thiab khaws cov dej vapor. Nws tuaj yeem nqus dej noo txawm tias qhov kub siab tshaj 105 degree, tab sis thaum qhov kub siab tshaj 38 degree, nws qhov nqus dej noo pib txo qis, thiab nws qhov zoo tshaj plaws noo noo nqus lub xeev yog nyob nruab nrab ntawm 21 ° C thiab 32 ° C. Thaum tus txheeb ze humidity yog 60% mus rau 90% siab dua, tus txheeb ze humidity nyob rau hauv lub thawv yuav khaws cia ntawm 40%.
Lub hauv paus ntsiab lus ntawm montmorillonite absorption: montmorillonite yog cov ntxhia hauv cov ntxhia uas muaj cov aqueous aluminosilicate zoo heev, uas yog monoclinic aqueous txheej silicate ntxhia. Cov montmorillonite particles zoo, txog 0.2 mus rau 1 micron, thiab muaj cov yam ntxwv ntawm colloidal dispersion. Nyob rau hauv lub tshuab ntsuas hluav taws xob, cov muaju flaky, xim lossis dawb tshauv, lossis lub teeb xiav lossis lub teeb liab pom. Thaum qhov kub nce mus txog 100-200 degree C, cov dej molecules hauv montmorillonite yuav maj mam khiav mus. Lub montmorillonite tom qab dej poob muaj zog adsorption ntawm dej molecules.
