Hydroxyethylulose (HEC) yog tsis-ionic, dej-soluble polymer muab tau los ntawm cellulose. Nws yog feem ntau siv nyob rau hauv ntau yam kev lag luam xws li cov tshuaj pleev tshuaj, tshuaj pleev ib ce, khoom noj, thiab cov khoom tu cov tuab, ruaj khov, thiab cov khoom ruaj khov.
Tshuaj lom neeg cov qauv ntawm hydroxyethylcellulose
HEC yog cov cellulose cellulose polymer, qhov chaw hydroxyethyl pawg tau qhia rau lub cellulose caj qaum. Qhov kev hloov pauv no txhim kho cov dej solubility thiab lwm yam khoom ntawm cellulose. Cov pab pawg hydroxyethyl (-ch2ch2oh) yog kev sib txally sib khi mus rau hydroxyl (-oh) pawg ntawm cellulose molecule. Qhov kev hloov kho no ntawm lub cev thiab tshuaj lom neeg ntawm cellulose, ua rau nws haum rau ntau cov ntawv thov.
Cov kab mob flammility
1. Ua Haujlwm
Cov khoom siv ntshiab yog cov khoom siv hluav taws xob vim tias nws muaj cov pab pawg hydroxyl, uas tuaj yeem dhau los dhau kev sib txuas. Txawm li cas los xij, kev qhia txog cov pab pawg hydroxyethyl rau hauv lub cellulose nraub qaum ulters nws cov yam ntxwv ntsej muag. Qhov muaj ntawm cov pab pawg hydroxyethyl tuaj yeem cuam tshuam kev coj tus cwj pwm ntawm HEC piv rau cov cellulose tsis tuaj yeem ua tsis tau.
2. Cov Ntsuas Kev Ntsuas
Kev sim ntsuas pob yog qhov tseem ceeb los txiav txim cov phom phom cuam tshuam nrog cov khoom siv. Ntau yam kev sib tw, xws li ASTM E84 (cov qauv kev nyab xeeb ntawm cov khoom siv hluav taws xob yas rau hauv cov khoom siv thiab cov khoom siv), yog siv los ntsuas cov nplaim taws ntawm cov ntaub ntawv. Cov kev ntsuas no ntsuas ntsuas cov nplaim hluav taws kis, kev loj hlob pa taws, thiab cov tsiaj tiv thaiv kab mob.
Yam cuam tshuam rau cov nplaim taws
1. Cov ntsiab lus noo noo
Lub xub ntiag ntawm noo tuaj yeem cuam tshuam cov nplaim taws ntawm cov ntaub ntawv. Cellulosic cov ntaub ntawv zoo li tsis tshua muaj nplaim thaum lawv muaj cov dej noo ntau dua vim yog cov dej kub nqus thiab txias ua haujlwm ntawm cov dej. Hydroxyethylulose, ua dej-soluble, tej zaum yuav muaj ntau yam ntawm noo noo nyob ntawm ib puag ncig cov xwm txheej.
2. Paus taus loj thiab ntom
Lub particle loj thiab ntom ntawm cov khoom tuaj yeem cuam tshuam nws cov nplaim taws. Finely faib cov khoom siv feem ntau muaj thaj chaw siab dua, uas txhawb kev sib txuas lus nrawm dua. Txawm li cas los xij, HEC yog feem ntau siv nyob rau hauv ib tug hmoov lossis granulated form nrog tswj cov feem ntau thiab tsawg kom tau raws li cov kev cai thov.
3. Muaj kev sib ntxiv
Hauv kev siv cov tswv yim, hydrotethylcelleculose cov qauv yuav muaj additives xws li cov yas tshuab, stabilizers, lossis nplaim taws retardants. Cov tshuaj ntxiv no tuaj yeem hloov cov yam ntxwv muaj txiaj ntsig ntawm cov khoom lag luam hec-raws li. Piv txwv li, nplaim taws retardants tuaj yeem cuam tshuam los yog ncua kev tiv thaiv thiab kis cov nplaim taws.
Cov phom sij phom sij thiab kev txiav txim siab nyab xeeb
1. Cia thiab tuav
Kev khaws cia zoo thiab tuav cov kev coj ua yog qhov tseem ceeb kom txo qis kev pheej hmoo ntawm cov xwm txheej hluav taws kub. Hydroxyethylcellulose yuav tsum muab cia rau hauv ib thaj chaw qhuav, muaj kev tiv thaiv zoo ntawm qhov chaw maj. Kev saib xyuas yuav tsum tau coj los tiv thaiv kev kis tau kom muaj cua sov ntau dhau los yog lub hnub ci ncaj qha, uas tuaj yeem ua rau decomposition lossis ignitioned.
2. Kev tswj txoj cai
Cov neeg tsim khoom lag luam thiab cov neeg siv cov khoom lag luam hydrotylcellose-muaj cov khoom lag luam thiab cov qauv kev nyab xeeb. Kev tswj hwm lub cev xws li Kev Ua Haujlwm Kev Nyab Xeeb thiab Kev Noj Qab Haus Huv (OSHA)
3. Hluav taws hluav taws kev ntsuas
Thaum muaj hluav taws uas muaj kev cuam tshuam hydroxyethylcelleculose lossis cov khoom uas muaj kev ntsuas hluav taws xob kom tsim nyog yuav tsum tau siv. Qhov no suav nrog kev siv dej, carbon dioxide, qhuav tshuaj tua hluav taws, lossis ua npuas ncauj, nyob ntawm qhov hluav taws kub thiab ib puag ncig ib puag ncig.
Hydroxyethylulose yog hloov kho cellule cellulose feem ntau siv nyob rau hauv ntau yam kev lag luam rau nws cov cua sov thiab ruaj khov. Thaum cov cellule ntshiab yog nplaim taws, kev qhia txog cov pab pawg hydroxyethyl alters cov cwj pwm frammability ntawm HEC. Yam khoom xws li cov ntsiab lus noo noo, qhov me me, thiab muaj cov quav ntxiv tuaj yeem cuam tshuam cov nplaim taws ntawm hydroxyethylcelleculose-muaj khoom. Kev Cia Khoom Zoo, tuav, thiab kev ua raws li kev tswj hwm kev nyab xeeb yog qhov tseem ceeb kom thim cov hluav taws phom phom cuam tshuam nrog HEC. Kev tshawb fawb ntxiv thiab kev xeem yuav tsim nyog kom nkag siab txog kev coj tus cwj pwm fydroxyethylulose nyob rau hauv txawv tej yam kev mob thiab cov qauv.
Lub Sijhawm Post: Apr-09-2024