Hauv kev lag luam niaj hnub no, kev ua tau zoo ntawm ib puag ncig tau dhau los ua ib qho ntawm cov cim qhia tseem ceeb rau kev ntsuas qhov zoo ntawm cov txheej.Hydroxyethyl cellulose (HEC), ua ib qho polymer thickener thiab stabilizer uas yaj tau hauv dej, siv dav hauv cov txheej txheem architectural, cov xim latex thiab cov txheej txheem dej. HEC tsis yog tsuas yog txhim kho kev ua haujlwm ntawm cov txheej txheem xwb, tab sis kuj muaj kev cuam tshuam loj heev rau lawv cov khoom ib puag ncig.
1. Qhov chaw thiab cov yam ntxwv ntawm HEC
HEC yog ib qho polymer compound tau los ntawm kev hloov kho tshuaj ntawm cov cellulose ntuj, uas yog biodegradable thiab tsis muaj tshuaj lom. Raws li cov khoom siv ntuj, nws cov txheej txheem tsim khoom thiab siv muaj kev cuam tshuam tsawg rau ib puag ncig. HEC tuaj yeem tswj cov dispersions, kho viscosity thiab tswj rheology hauv cov txheej txheem txheej, thaum zam kev siv cov tshuaj ntxiv uas ua rau ib puag ncig puas tsuaj. Cov yam ntxwv no tso lub hauv paus rau HEC los ua cov khoom tseem ceeb hauv cov qauv txheej txheem ib puag ncig.
2. Kev txhim kho cov khoom xyaw txheej
HEC txo qhov kev vam khom rau cov khoom xyaw uas muaj kuab paug ntau los ntawm kev txhim kho kev ua haujlwm ntawm cov txheej. Piv txwv li, hauv cov txheej txheej dej, HEC tuaj yeem txhim kho qhov kev sib kis ntawm cov xim, txo qhov kev xav tau rau cov tshuaj dispersants uas muaj kuab paug, thiab txo qhov kev tso tawm ntawm cov tshuaj lom. Tsis tas li ntawd, HEC muaj qhov solubility zoo hauv dej thiab tsis kam ntsev, uas tuaj yeem pab cov txheej txheej tswj kev ua haujlwm ruaj khov hauv cov chaw noo noo siab, uas txo qhov ua tsis tiav thiab pov tseg ntawm cov txheej txheej los ntawm cov yam ntxwv ib puag ncig, yog li txhawb nqa lub hom phiaj tiv thaiv ib puag ncig tsis ncaj qha.
3. Kev tswj VOC
Cov organic compounds uas tsis muaj zog (VOC) yog ib qho ntawm cov chaw ua rau muaj kuab paug hauv cov txheej txheem ib txwm muaj thiab ua rau muaj kev hem thawj rau ib puag ncig thiab tib neeg kev noj qab haus huv. Ua ib qho thickener, HEC tuaj yeem yaj tag nrho hauv dej thiab sib xws nrog cov txheej txheem txheej txheem dej, txo qhov kev vam khom rau cov kuab tshuaj organic thiab txo cov pa phem VOC los ntawm qhov chaw. Piv nrog cov thickeners ib txwm muaj xws li silicones lossis acrylics, daim ntawv thov ntawm HEC yog tus phooj ywg zoo rau ib puag ncig thaum tswj kev ua tau zoo ntawm cov txheej txheem.
4. Kev txhawb nqa kev txhim kho kom ruaj khov
Daim ntawv thov ntawm HEC tsis yog tsuas yog qhia txog kev tawm tswv yim ntawm cov khoom siv zoo rau ib puag ncig xwb, tab sis kuj txhawb nqa kev txhim kho kev lag luam coatings. Ntawm ib sab tes, ua cov khoom siv rho tawm los ntawm cov peev txheej rov ua dua tshiab, HEC cov khoom tsim tawm tsawg dua rau cov roj fossil; ntawm qhov tod tes, qhov ua tau zoo ntawm HEC hauv coatings ua rau lub neej ua haujlwm ntev ntawm cov khoom, yog li txo cov khoom siv thiab cov khib nyiab tsim. Piv txwv li, hauv cov xim pleev kom zoo nkauj, cov mis nrog HEC tuaj yeem txhim kho qhov kev tiv thaiv txhuam thiab cov khoom tiv thaiv kev sagging ntawm cov xim, ua rau cov khoom siv los ntawm cov neeg siv khoom siv ruaj khov dua, yog li txo qhov zaus ntawm kev tsim kho dua tshiab thiab lub nra hnyav ib puag ncig.
5. Kev Cov Teeb Meem Txog Kev Siv Tshuab thiab Kev Txhim Kho Yav Tom Ntej
Txawm hais tias HEC muaj qhov zoo tseem ceeb hauv kev ua haujlwm ib puag ncig ntawm cov xim pleev xim, nws daim ntawv thov kuj ntsib qee qhov teeb meem kev siv tshuab. Piv txwv li, qhov nrawm thiab kev ruaj khov ntawm HEC yuav raug txwv hauv cov mis tshwj xeeb, thiab nws qhov kev ua tau zoo yuav tsum tau txhim kho los ntawm kev txhim kho cov txheej txheem ntxiv. Tsis tas li ntawd, nrog rau kev nruj ntawm cov cai ib puag ncig, qhov kev thov rau cov khoom xyaw bio-based hauv cov xim pleev xim kuj nce ntxiv. Yuav ua li cas los sib xyaw HEC nrog lwm cov ntaub ntawv ntsuab yog kev tshawb fawb yav tom ntej. Piv txwv li, kev tsim cov txheej txheem sib xyaw ntawm HEC thiab nanomaterials tsis tuaj yeem txhim kho cov khoom siv kho tshuab ntawm cov xim pleev xim, tab sis kuj txhim kho nws cov peev xwm tiv thaiv kab mob thiab tiv thaiv kev ua qias tuaj kom tau raws li qhov xav tau ib puag ncig siab dua.
Ua ib qho khoom siv thickener uas zoo rau ib puag ncig uas tau los ntawm cov cellulose ntuj,HECtxhim kho qhov kev ua tau zoo ntawm cov xim pleev ib puag ncig. Nws muab kev txhawb nqa tseem ceeb rau kev hloov pauv ntsuab ntawm kev lag luam pleev xim niaj hnub los ntawm kev txo cov pa phem VOC, ua kom zoo dua cov qauv pleev xim, thiab txhawb nqa kev txhim kho kom ruaj khov. Txawm hais tias qee qhov teeb meem kev siv tshuab tseem yuav tsum tau kov yeej, qhov kev cia siab dav dav ntawm HEC hauv cov xim pleev ib puag ncig yog qhov zoo thiab muaj peev xwm. Tawm tsam keeb kwm yav dhau los ntawm kev nce qib thoob ntiaj teb kev paub txog ib puag ncig, HEC yuav txuas ntxiv siv nws lub zog los tsav kev lag luam txheej txheem mus rau yav tom ntej ntsuab thiab ruaj khov dua.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-17-2024