01. Vim kev nyiam ua rau nws tus kheej hws
Tus hluav taws xob polymer ua kom tsis haum, qhov paug tawm ntawm lub reactor tsis txhais tau tias ua tiav kev ua tiav ntawm polycondensation.Txawm tshwj xeeb, kua muaj tshuaj lom neeg siab ua haujlwm ntawm cov khoom siv dej, thaum cov tshuaj tiv thaiv tshwm sim, tseem tuaj yeem qeeb qeeb, txuas ntxiv mus rau qhov chaw polycondensation cov tshuaj tiv thaiv, uas ua rau muaj qee qhov kev hloov pauv hauv daim ntawv thiab qhov xwm ntawm cov tshuaj, cov haujlwm qub dispersive yuav raug txo kom tsawg.
Thaum cov polycarboxylic acid dej tsim tawm yog khaws cia rau lub sijhawm ntev raws li cov xwm txheej zoo li qub, cov kua hauv qab yuav maj mam dhau los ua cov nplaum thiab tuab, thiab tseem yuav muaj cov ntshiab siv lead ua kua-zoo li chips (ceeb toom: kev nyiam ntawm viscosification thiab nti pauv ntawm 40% siab concentration polycarboxylic acid ntau dua li ntawm 20% qis concentration polycarboxylic acid) .Txawm qhov kev sim, polycarboxylate dej tsim hluav taws xob tsis tau muaj cov metamorphism loj, thiab nws cov dispersing kev ua haujlwm tseem muaj thiab tseem siv tau. Txawm li cas los xij, nws yog qhov yuav tsum tau ntsuam xyuas thiab ntsuas nws txoj kev ua kom poob qis qis qis, thiab siv nws ua tib zoo txo qis qib lossis nce qhov ntau npaum.
02. Vim muaj kev tiv tauj nrog cov khoom siv carbon steel
Fe3+ tuaj yeem ua rau cov kev phiv tsis zoo ntawm cov dej polycarboxylate reducer, yog li ntawd cov reactor thiab lub thawv ntim khoom siv rau nws cov synthesis tsis tuaj yeem ua cov carbon steel.Tsis muaj cov pa roj carbon steel tuaj yeem yog mutagenic thiab nws cov peev txheej dispersive tuaj yeem txo lossis ploj dua.Tiam sis, nrog kev nce qib ntawm cov thev naus laus zis, qhov rhiab heev ntawm Fe3+ rau lub mutagenesis ntawm polycarboxylic acid ua los ntawm cov thev naus laus zis tam sim no tau txo ntau. Txawm tias cov chaw lag luam uas twb muaj lawm siv cov thawv ntim cov pa roj carbon steel tsis muaj txheej txheem rwb thaiv tsev kom ncaj qha cov tshuaj polycarboxylic acid niam dej cawv, tab sis qhov cia khoom kub thiab sijhawm yuav tsum tsis txhob siab lossis ntev.
3. Ntxiv kev hloov kho kev pabcuam thaum ua haujlwm ntau lawm
Polycarboxylic acid dej-txo tus neeg sawv cev cov khoom muaj qee cov ntsiab lus huab cua ntawm lawv tus kheej. Cov huab cua cov ntsiab lus ntawm cov khoom sib txawv los ntawm cov khoom siv sib txawv thiab cov txheej txheem sib txawv tsis zoo li qub. Feem ntau, cov chaw tsim khoom lag luam yuav xaiv ntxiv cov tshuaj defoamer nyob rau tom qab theem ntawm cov khoom siv hluav taws xob (ua ntej tawm hauv lub hwj kais) kom txo qis thiab tswj cov nyiaj tag nrho.Tiam sis, silicone, phosphate ester thiab lwm qhov defoamer tuaj yeem' t tau sib npaug faib rau hauv polycarboxylic acid tom qab ntxiv. Tom qab muab cia rau hauv lub xeev zoo li qub rau qee lub sijhawm, lossis vim tias qhov kub poob, lawv yuav qee zaum muaj kev ntiab tawm thiab dej nag tawm ntawm cov polycarboxylic acid niam cawv, condensing rau hauv dej lossis waxy tawg ntab rau cov kua nto.Qhov kev kho mob thiab tswj cov huab cua cov ntsiab lus ntawm admixture feem ntau ua raws li lub hauv paus ntsiab lus ntawm" kev tiv thaiv tshav kub thiab huab cua txias"
Txhawm rau kom kov yeej qhov tsis txaus ntseeg ntawm polycarboxylic acid niam haus dej cawv, nws tau hais tias: raws li leej niam haus dej haus cawv thiab kev tsim khoom sib luag, kev tsim khoom thiab kev txiav txim yuav tsum tau npaj thiab lub sijhawm cia yuav tsum raug tswj.Qhov ntxiv alkali los kho lub PH tus nqi ntawm lub kaw lus thiab inhibit qhov nyiam ntawm tus kheej ua kom tsis haum.Piv cov twj tso kua mis tawm mus txuas ntxiv kom tsis tu ncua, tawg cov khoom zoo li qub, thiab khaws cov teeb meem sib faib ntawm cov kua cawv nyob rau hauv lub tank; Yog tias cov khoom tau tas sij hawm, txoj cai kev nyab xeeb ntawm kev tshuaj xyuas ua ntej kev siv yuav tsum taug.
Lub freezability ntawm compound polycarboxylic acid khoom
Nyob rau lub caij ntuj no, qhov kub tau tsawg, thiab polycarboxylate dej tsim tawm tom qab kev sib xyaw yog yooj yim khov hauv qab qhov ntsuas kub tsis zoo, uas yuav ua rau lub nkoj thiab cov raj xa dej tawg thiab ua rau muaj xwm txheej.Qhov tseeb rau cov xwm txheej tiag tiag, qhov dej khov ntawm polycarboxylic acid compound khoom feem ntau qis dua -6 ~ -8 ℃, nrog lub voos luv thiab lub siab rhiab. Nws qhov tso tawm dawb muaj feem xyuam nrog cov mis' s cov ntsiab lus ruaj khov. Cov khoom lag luam nyob hauv nruab nrab nrog cov ntsiab lus tsis tshua muaj siab yuav khov dua li cov khoom lag luam qib siab nrog cov ntsiab lus tau zoo heev.Nws tuaj yeem yog nyob rau hauv cov khoom lag luam nrog cov khib nyiab qis dua, txawm hais tias tag nrho cov ntsiab lus khib nyiab tsawg, qhov nplua mias ntawm ntsev ua hauj lwm Cheebtsam yog qhov siab dua.
Kev npliag ntawm cov nplais ntawm cov nplais ua tiav raug ntsuas rau cov dej khov ua, cov tshuaj subglacial thiab cov seem ua piv txwv (ob qho tib si uas yog rau tib qho nruab nrab thiab qib cov khoom lag luam) hauv qhov homogenization tsis raug puas los ntawm khov. Lawv yog 92, 226 thiab 180mm, ntsig txog, qhia tias homogenization ntawm cov khoom hauv lub tank tau ploj mus tom qab khov.Lo tiv thaiv kom tsis txhob khov, kev sim tau ua kom qhia ntau yam sib txawv ntawm cov neeg ua hauj lwm tiv thaiv khov rau hauv cov mis, tab sis cov txiaj ntsig tsis tau zoo thiab tuaj yeem ua rau stratification.
Cov qauv tsim cov mis tsis zoo nyob rau lub caij ntuj no yog kom txo qhov kub thiab txias kom ntau li ntau tau kom txog rau thaum hle cov neeg ua hauj lwm zoo, xaiv cov mis ntawm cov kua dej tag nrho lossis zoo ib yam li cov niam tag nrho cov kua, lossis kom cov mis muaj cov ntsiab lus tseem ceeb, lossis txhawm rau muab cov thawv ntim hluav taws xob nrog cov hluav taws xob cua sov ua kom muaj qhov kub thiab tiv thaiv kom kub, xyuam xim rau lub pas nrig cua sov, lub thawv hlwv nrog cov npog nag, plua plav npog thiab ntsuas qhov ntsuas, txhawm rau kom muaj kev nyab xeeb.Qhov kev sib piv, kev ntsuas tiv thaiv dej khov ntawm cov cuab yeej ua cua sov yog muaj txhij txhua, nyab xeeb thiab nyab xeeb, thiab tsis txwv qhov tsim nyog ntawm mis qauv tsim thiab kev ywj pheej ntawm xaiv cov khoom siv.
