Putty hmoov feem ntau yog tsim cov tshuaj yeeb yaj kiab (cov ntaub ntawv sib dhos), cov hmoov txhuv nplej siab, thiab cov hmoov txhuv nplej siab organic, ethoth ether ether, polyvinyl cawv, Dispersible looj hmoov, thiab lwm yam. Qhov kev ua tau zoo thiab siv ntau yam ntaub ntawv raw tshuaj yog kev txheeb xyuas ib qho los ntawm ib qho hauv qab no.
1: Kev txhais thiab sib txawv ntawm fiber ntau, cellulose thiab cellulose ether
Fiber (Asmeskas: fiber; Askiv: fiber ntau) yog hais txog cov tshuaj yeeb yaj kiab los ntawm nruam los yog txiav txim siab. Xws li cog fiber ntau, tsiaj plaub hau, ua kom sov, hluavtaws fiber ntau, thiab lwm yam.
Cellulose yog mactromolecular polysaccharide muaj cov piam thaj thiab yog cov txheej txheem tseem ceeb ntawm cov nroj tsuag ntawm tes. Nyob rau hauv chav tsev kub, cellulose yog tsis yog dab tsi nyob rau hauv dej los yog nyob rau hauv tej organic cov kuab tshuaj. Cov ntsiab lus cellulose ntawm paj rwb yog ze rau 100%, ua nws cov purest ntuj ntawm cellulose. Nyob rau hauv cov ntoo dav dav, cov nyiaj cellulose rau 40-50%, thiab muaj 10-30% Qhov sib txawv ntawm cellulose (txoj cai) thiab cov hmoov txhuv nplej siab (sab laug):
Feem ntau hais lus, ob lub hnub qub thiab cellulose yog macromolecular polysaccharides, thiab cov mis roj ntsha tuaj yeem qhia raws li (C6h10o5) n. Qhov hnyav molecular ntawm cellulose loj dua tias cov hmoov txhuv nplej siab, thiab cellulose tuaj yeem decomposed los tsim cov hmoov txhuv nplej siab. Cellulose yog d-flucose thiab β-1,4 glycoside mycyromolecular polysaccharide muaj kev sib xyaw ntawm Bonds, thaum cov hmoov txhuv nplej siab tsim los ntawm daim ntawv cog lus α-1,4 glycosidic. Cellulose feem ntau tsis ceged, tab sis cov hmoov txhuv nplej siab yog branched los ntawm 1,6 glycosidic bonds. Cellulose yog tsis zoo soluble hauv dej, thaum cov hmoov txhuv nplej siab yog cov dej kub. Cellulose yog insensitive rau amloase thiab tsis tig xiav thaum raug Iodine.
Lub npe lus Askiv lub npe Ethaet yog cellulose ether, uas yog ib tug qauv ovher ua los ntawm cov qauv ntawm cellulose. Nws yog cov khoom lag luam ntawm cov tshuaj lom neeg cov tshuaj tiv thaiv ntawm cellulose (cog) nrog tus neeg sawv cev ntawm lub nroog. Raws li cov qauv tshuaj cais tawm ntawm cov hloov chaw tom qab etherification tom qab etherification, nws tuaj yeem faib ua anionic, cationic thiab cov tsis muaj kev ua neej. Nyob ntawm cov neeg sawv cev ntawm lub nroog uas siv, cov cellulose cellulose, cellulropyl cellulose, cellulropyl hydulose, cellulropy cellulose thiab cellulose cellulose thiab cellulose cellulose thiab cellulose cellulose thiab cov cellulose, thiab lwm yam hauv Kev tsim kho kev tsim kho, Cellulose ether tseem hu ua cellulose, uas yog lub npe tsis xwm yeem, thiab nws yog hu ua cellulose (lossis ether) kom raug. Thickening txheej ntawm cellulose cellulose cellule cellule cellule thickener yog ib qho tuab ntawm cov dej thiab cov khoom siv ntawm cov lwg me me. Lub polymer saw ntawm cellulose tau yooj yim los tsim hydrogen nyiaj nrog dej hauv dej, thiab hydrogen bond ua rau nws muaj cov dej num ntau thiab inter-molecular anentanglement.
Thaum lub cellulose ether thickener ntxiv rau cov xim looj kua yas, ua rau nws cov khoom siv dawb, ua rau nws muaj ntau qhov chaw dawb, ua rau cov pigments, fillers thiab kua yas; Nyob rau tib lub sijhawm, lub cellulose ither molecular charts yog sib cuam tshuam los ua ib qho cuab yeej sib tw thiab cov kua yas tau muab ntim rau hauv nruab nrab thiab tsis tuaj yeem ntws dawb. Raws li ob qho teebmeem no, lub viscosity ntawm lub kaw lus raug txhim kho! Ua tiav cov nyhuv tuab uas peb xav tau!
Cov xim muaj zog (Ethere): Feem ntau hais lus, hydroxypropyl yog siv rau hydroxypropylulose yog siv rau tshuaj cug methylcellulose, putty thiab lwm yam khoom. Carboxymethyl cellulose yog siv rau cov hmoov tsis zoo rau sab hauv phab ntsa sab hauv. Carboxymethyl cellulose, tseem hu ua sodium carboxymethyl cellulose, raug xa mus rau kev ua tau ruaj khov nrog kev ua tau ruaj khov nyob rau hauv dej. Alkaline lossis alkaline pob tshab viscous kua kua, soluble nyob rau hauv lwm cov dej-soluble ci ci thiab resins rau hauv cov kuab tshuaj ethanol. CMC tuaj yeem siv los ua phau ntawv, thickener, kev ncua cov neeg sawv cev, thiab lwm yam khoom siv, thiab cov khoom siv sib zog, thiab cov khoom siv yooj yim tshaj plaws ntawm cov kws kho mob cellulose , feem ntau yog "muaj monosodium glutamate". Carboxymethyl cellulose muaj cov haujlwm ntawm kev khi, thickening, ntxiv dag zog, emulsifying, dej rov qab thiab raug ncua. 1. Daim ntawv thov ntawm sodium carboxymethyl cellulose hauv kev lag luam khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus tsis yog tsuas yog siv cov khoom noj kom zoo, thiab tuaj yeem txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus, tab sis kuj tseem muaj cov khoom noj kom zoo, thiab tuaj yeem txhim kho cov khoom noj khoom haus, tab sis kuj txhim kho cov khoom noj khoom haus tsis yog tsuas yog cov khoom noj kom ntev. 2. Kev siv ntawm cov sodium carboxymethyl cellulose hauv kev lag luam emulsonsical: nws tuaj yeem siv los ua cov duab khov kho rau cov tshuaj rau cov ntsiav tshuaj hauv kev lag luam kws tshuaj. 3. CMC tuaj yeem siv ua tus sawv cev los tiv thaiv kev tawm tsam, emulsifier, dispersant, leveling tus neeg sawv cev, thiab cov nplaum rau txheej txheej. Nws tuaj yeem ua cov ntsiab lus zoo ntawm cov txheej txheej finating ferly faib nyob rau hauv cov kuab tshuaj, kom cov txheej tsis delaminate tau ntev. Nws tseem dav siv nyob rau hauv cov xim. 4. Sodium Carboxymethyl cellulose tuaj yeem siv raws li flocculant, thickener, duab dhos ua yeeb yam, tawv, luam, luam ntawv, ceramics, Kev siv tshuaj txhua hnub thiab lwm thaj chaw, thiab vim nws cov kev ua tau zoo thiab kev tsim cov ntawv thov tas li, thiab kev cia siab ua lag luam yog qhov dav heev. Daim Ntawv Thov Cov Qauv: Sab Nrauv Phab Ntsa Putty Puag Filula Daim hmoov Putty: 400-6Kg 3 Pregelatinized Starch: 5 -6kg 3 CMC: 10 -15kg lossis HPMC2.5-3kg4 CMC: 10-15kg lossis HPMC2.5-3kg Putty Cellulose CMC, Pregelatinized Cov hmoov txhuv nplej siab: ① muaj lub peev xwm ua kom nrawm nrawm dua; Kev ua tau raws li kev ua tau zoo, thiab qee yam dej khaws cia; ② txhim kho cov kev muaj peev xwm tiv thaiv kab mob (Sagging) ntawm cov khoom, txhim kho kev ua haujlwm ntawm cov khoom, thiab ua haujlwm smoother; ntev ntev qhib lub sij hawm ntawm cov khoom siv. ③ Tom qab ziab, qhov saum npoo yog du, tsis poob hmoov, muaj cov yeeb yaj kiab zoo-tsim cov khoom thiab tsis muaj khawb. ④ Muaj qhov tseem ceeb tshaj, cov tshuaj ntau, thiab muaj kev noj tshuaj tsawg heev tuaj yeem ua tiav qhov kev cuam tshuam zoo; Nyob rau tib lub sijhawm, tus nqi ntau lawm yog txo los ntawm kwv yees li 10-20%. Hauv kev tsim kho kev tsim kho, cmc yog siv nyob rau hauv kev tsim cov qhob cov qhob cov kev ua kom txo cov dej poob thiab ua raws li tus so. Txawm hais tias kev tsim kho loj, nws kuj tseem tuaj yeem txhim kho lub zog ntawm cov pob zeb ua thiab pab txhawb cov kev nyiam ua kom poob tawm ntawm daim nyias nyias. Lwm lub hom phiaj tseem ceeb yog los txhuam phab ntsa dawb thiab putty hmoov, uas muaj peev xwm txuag tau ntau cov ntaub ntawv hauv tsev thiab txhim kho cov txheej txheem tiv thaiv thiab lub teeb ci ntsa iab ntawm phab ntsa. Hydroxyethy Metylcellulose, hu ua (HEC): Tshuaj mis:
1. Taw qhia rau hydroxyethyl cellulose: hydroxyethyl cellulose (HEC) yog cov ntaub ntawv tsis muaj ionic los ntawm cov ntaub ntawv polymer los ntawm cov txheej txheem polymer los ntawm cov txheej txheem polymer los ntawm cov txheej txheem ntawm cov txheej txheem. Nws yog qhov tsis muaj ntxhiab, cov tsis tau muaj hmoov lossis cov xim av dawb los tsim cov dej khov, thiab cov kev sib cais tsis muaj cuam tshuam los ntawm tus nqi PH. Nws muaj thickening, khi, dispersing, ua yeeb yaj kiab, zaj duab xis, kev ua yeeb yam, noo noo-khaws thiab ntsev-resistant cov khoom.
2. Cov Qauv Qhia Txog Qhov Haujlwm Txheej Txheem Khoom Plig Dawb lossis Yawg (WT%) ≤ 5.0 PH 5.5 Viscosity (mpa.s) 2%, 30000, 100000 ahoous kev daws ntawm hydroxyethyl cellulose siab thickening nyhuv
● Hydroxyethyl cellulose muab cov khoom siv coating zoo rau cov ntsiab lus looj, tshwj xeeb tshaj yog PVA txheej. Tsis muaj flocculation tshwm sim thaum cov xim yog tuab tsim.
● Hydroxyethyl cellulose tau muaj cov nyhuv ntau dua. Nws tuaj yeem txo cov kev siv tshuaj, txhim kho kev lag luam ntawm cov mis, thiab txhim kho cov txhuam hniav tiv thaiv cov txheej.
Cov Khoom Taw Qhia Zoo Li Qub
Cov tshuaj aquousous ntawm hydroxyethyl cellulose yog ib qho kev tawm dag zog tsis yog-Newtonian, thiab cov cuab yeej ntawm nws txoj kev daws tau hu ua thixotrotropy.
● Nyob rau hauv lub xeev zoo li qub, tom qab cov khoom yog yaj tag, lub txheej txheej tswj hwm cov qhov zoo tshaj plaws thickening thiab qhib lub xeev.
● Nyob rau hauv lub xeev ntawm pouring, lub kaw lus tswj tau ib pawg viscerate, kom cov khoom muaj cov nplaim zoo thiab yuav tsis txaws.
● Thaum thov los ntawm txhuam thiab cov menyuam, cov khoom kis tau yooj yim ntawm cov substrate. Nws yog qhov yooj yim rau kev tsim kho. Nyob rau tib lub sijhawm, nws muaj zoo txaws tsis kam.
● Thaum kawg, tom qab txheej tiav lawm, lub viscosity ntawm lub system rov qab tam sim ntawd, thiab txheej tam sim ntawd sags.
Dispersibility thiab solubility
● Hydroxyethyl cellulose yog kho nrog ncua kev sib cais, uas tuaj yeem tiv thaiv agglomeration thaum cov hmoov qhuav ntxiv. Tom qab kom ntseeg tau tias cov hmoov hec yog cov khoom tawg zoo, pib co.
● Hydroxyethyl cellulose nrog kom tsim kho kom zoo tau kho tau zoo thiab viscosity nce tus nqi ntawm cov khoom.
Kev tso khoom ruaj khov
● Hydroxyethyl cellulose tau zoo anti-mildew cov khoom thiab muab lub sijhawm txaus. Ua tau zoo tiv thaiv pigments thiab fillers los ntawm kev tswm. 4. Yuav siv li cas: (1) Ntxiv qha ncaj qha rau lub sijhawm tsim cov txheej txheem no yog qhov yooj yim tshaj plaws thiab yuav siv sijhawm luv tshaj plaws. Cov kauj ruam yog raws li hauv qab no: 1. Ntxiv cov dej ntshiab rau hauv lub thoob loj nruab nrog lub siab shear agitator. 2. Pib do txuas txuas ntxiv ntawm kev nrawm nrawm thiab maj mam sieve lub hydroxyethyl cellulose rau hauv kev daws qhov uayees. 3. Txuas ntxiv nplawm kom txog thaum txhua qhov sib luag tau tsau. 4. Tom qab ntawd ntxiv cov tshuaj tiv thaiv antifungal thiab ntau yam ntxiv. Xws li pigments, dispersing dej, ammonia dej, thiab lwm yam. (2) Npaj niam haus cawv Niam rau kev siv: Cov kab lus no yog npaj niam txiv cawv nrog kev xav tau ntau dua ua ntej, thiab tom qab ntawd ntxiv rau cov khoom. Qhov zoo dua ntawm hom no yog tias nws muaj peev xwm ntxiv tau ncaj qha ntxiv rau cov khoom tiav, tab sis nws yuav tsum khaws cia kom zoo. Cov kauj ruam yog zoo sib xws rau cov kauj ruam (1-4) hauv txoj kev (1): Qhov sib txawv yog tias tsis muaj kev sib txawv hauv cov tshuaj, txuas ntxiv nplawm kom txog thaum ua kom tiav mus rau hauv kev daws teeb meem viscous. Nws yuav tsum raug sau tseg tias tus neeg sawv cev tiv thaiv kab mob yuav tsum tau ntxiv rau niam cawv niam hmo kom sai li sai tau. V. Daim Ntawv Thov 1. Siv rau hauv dej-based latex xim: HEC, raws li kev tiv thaiv vinysion emulsion los txhim kho cov txheej txheem polulsity hauv ntau qhov tseem ceeb ntawm p. Nyob rau hauv kev tsim cov khoom tiav, ntxiv rau xws li pigments thiab fillers yog siv los ua cov tsis sib xws, ruaj khov thiab muab cov teebmeem tuab. Nws kuj tseem siv tau los ua qhov tsis sib xws rau kev ncua kev kawm xws li styrene, acrylate, thiab propylene. Siv hauv looj cov xim yas tuaj yeem txhim kho cov tuab thiab ua tau zoo. 2. Nyob rau hauv cov nqe lus ntawm cov roj drilling: HEC yog siv los ua cov tuab nyob rau hauv ntau cov av nkos yuav tsum muaj rau cov haujlwm, kom cov av nkos tuaj yeem tau txais cov hmoov av zoo thiab ruaj khov. Txhim kho cov av nkos nqa tau thaum lub sijhawm khiav tawm, thiab tiv thaiv kom tiv thaiv kom muaj dej ntau los ntawm cov av nkos, ruaj khov cov txheej ntau lawm ntawm cov txheej roj. 3. Siv rau hauv kev tsim kho vaj tse thiab tsev tsim nyog: Vim nws muaj peev xwm ua haujlwm dej muaj zog, HEC yog qhov ua kom zoo rau cov cement slurry thiab cug. Nws tuaj yeem sib xyaw ua pa rau hauv kev tshuaj khib thiab kev tsim kho cov khoom ua haujlwm, thiab ua kom lub sijhawm ua haujlwm ntev ntawm cov pob zeb ua kom tawg thiab tsis txhob tawg. Nws tuaj yeem txhim kho nws cov dej khaws cia thiab sib txuas lus lub zog thaum siv rau plastering plaster, tsev sib koom ua plaster, thiab plaster putty. 4. Siv tshuaj txhuam hniav: vim nws cov zog tiv taus rau ntsev thiab acid, HEC tuaj yeem ua kom cov tshuaj txhuam hniav tau ruaj khov. Tsis tas li ntawd, tshuaj txhuam hniav tsis yooj yim kom qhuav vim nws txoj kev khaws cia hauv dej thiab emulsifying. 5. Thaum siv nyob rau hauv dej-based number case number case, HEC tuaj yeem ua tus mem kua qhuav kom qhuav sai thiab impminable. Ib qho ntxiv, HEC tseem muaj dav siv rau hauv textile luam ntawv thiab dyeing, papermaking, tshuaj lom txhua hnub thiab lwm yam. 6. Kev ceev faj rau kev siv HEC: a. Hygroscopicity: txhua hom ntawm hydroxyethyl cellulose Hec yog hygroscopic. Cov ntsiab lus dej feem ntau yog qis dua 5% thaum tawm hauv lub Hoobkas, tab sis vim muaj kev thauj mus los sib txawv thiab ib puag ncig yuav siab dua thaum tawm hauv lub hoobkas. Thaum siv nws, cia li ntsuas cov ntsiab lus dej thiab rho tawm qhov hnyav ntawm cov dej thaum xam. Tsis txhob ua rau nws rau cov cua. b. Hmoov hmoov yog cov khoom tawg: yog tias tag nrho cov organic hmoov thiab hydroxyethyl cellulose cellulose hmoov hmoov yog nyob rau hauv ib qho kev faib ua feem, lawv kuj tseem tawg thaum lawv ntsib hluav taws. Kev ua haujlwm kom yog yuav tsum ua kom tsis txhob muaj hmoov plua plav hauv cov cua ntau li ntau tau. 7. Ntim cov lus qhia: Cov khoom lag luam yog tsim los ntawm cov ntawv yas sib xyaw hnab kab nrog polyethylene sab hauv ntawm 25 kg. Khaws rau hauv qhov cua thiab qhuav qhov chaw nyob hauv tsev thaum khaws cia, thiab xyuam xim rau ya raws. Them sai sai rau nag thiab hnub tiv thaiv thaum thauj mus los. HydroxyPropy cellulose, xa mus rau (HPMC): HydroxyPropyl Cellulose (HPMC) yog qhov tseem ceeb, thaum ntsib nrog dej txias, nws sai disperses thiab ploj mus rau hauv dej. Nyob rau lub sijhawm no, cov kua tsis muaj viscosity. Tom qab txog 2 feeb, lub viscosity ntawm cov kua nce, kev sib sau pob tshab viscous colloid. Tsis yog-Instant hom: nws tsuas siv tau rau cov khoom hmoov qhuav xws li putty hmoov steeth thiab xis cug. Nws tsis tuaj yeem siv rau hauv cov kua nplaum kua thiab pleev xim, thiab yuav muaj clumping.
Lub Sijhawm Post: Dec-26-2022