Hydroxyethyl cellulose lub cev thiab tshuaj kho mob
Cov tsos pom zoo cov khoom no yog dawb rau lub teeb daj fibrous lossis powdery cov khoom, tsis muaj tshuaj lom thiab toxic
Melting point 288-290 ° C (Dec.)
Qaus 0.75 G / ml ntawm 25 ° C (Lit.)
Solubility soluble hauv dej. Insoluble nyob rau hauv cov organic cov kuab tshuaj. Nws yog soluble nyob rau hauv dej txias thiab dej kub, thiab feem ntau insoluble nyob rau hauv feem ntau cov kuab tshuaj emolic. Lub viscosity hloov me ntsis nyob rau hauv cov nqi ntawm PH tus nqi 2-12, tab sis cov viscosity txo dhau qhov no. Nws muaj cov haujlwm ntawm thickening, ncua, khi, emulsifying, dispersing, thiab tswj kom noo. Cov kev daws teeb meem hauv kev sib txawv viscosity li cas tuaj yeem npaj tau. Muaj ntsev zoo heev rau electrolytes.
Raws li tsis yog-ionic surfactant, hydroxyethyl cellulose muaj cov khoom hauv qab no ntxiv rau cov khoom siv hauv qab no ntxiv, ua yeeb yaj kiab, dej-khaws cia thiab muab cov tshuaj tiv thaiv kab mob:
1. HEC yog soluble hauv dej kub lossis dej txias lossis npau npau yam tsis muaj nag dej, yog li nws muaj ntau yam ntawm solubility, thiab tsis-thermal gelation;
2. Nws yog tsis-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, solfactants, thiab ntsev. Nws yog ib qho zoo tshaj plaws colloidal thickener rau cov kev daws teeb meem elevelfolyte;
3
4. Piv nrog lees paub methyl cellulose thiab hydroxypropal methylropy, lub dispersing muaj peev xwm ntawm hac yog qhov phem tshaj, tab sis kev tiv thaiv kev tiv thaiv kev muaj peev xwm yog qhov muaj zog tshaj.
Kev Xav Tau thiab Cov Qauv Zoo rau Hydroxyethyl Cellulose
Cov khoom: Performance index pob liab hloov (ms) 2.0-2.5 noo noo (%) ≤5) ≤5) ≤COSWS (MPA. S) 2% 20 ℃ aqueous daws 5-70000 cov txhuas (%) ≤0.001
Siv ntawm hydroxyethyl cellulose
【Siv 1】 Siv ua surfactant, latex thickener, colloidal tiv thaiv kua, polyvinyl chloride dispersant, thiab lwm yam.
[Siv 2] siv los ua cov tuab thiab ua kom muaj kev puas tsuaj kom dej rau cov dej ua kua thiab ua kua, thiab muaj cov nyhuv tseeb tuab hauv cov dej brine drilling. Nws kuj tseem siv tau raws li cov kua dej ploj rau cov roj kom zoo. Nws tuaj yeem hla nrog polyvalent hlau ions los ua ib qho gel.
[Siv 3] Cov khoom no yog siv ua polymeric dispersant rau dej-based gel fracturing kua, polystyrene thiab polyvinyl chloride hauv pob zeb hauv av. Nws kuj tseem siv tau ua cov thickenter thickener hauv kev lag luam pleev xim, cov xis mas anticoagulant thiab a noo noo defulion tus neeg saib xyuas hauv kev tsim kho. Ceramic Kev Lag Luam Glazing thiab Tshuaj Txhuam Hniav Blinder. Nws tseem dav siv hauv kev luam ntawv thiab dyeing, textiles, tshuaj, kev tu cev, luam yeeb, tshuaj tua kab, tshuaj tua kab thiab tua hluav taws.
[Siv 4] siv ua surfactant, colloidal tiv thaiv tus neeg sawv cev, cov tshuaj pleev vinylitate, thiab lwm yam emulsifier, thiab dispersion stetizer rau looj. Dav siv dav hlau, fibers, Dyeing, tshuaj, tshuaj pleev tshuaj, tshuaj tua kab, thiab lwm yam hauv kev siv roj kev tshawb nrhiav thiab kev lag luam machinery.
【Siv 5】 Hydroxyethyl cellulose muaj cov haujlwm ntawm cov kev ua si ntawm cov khoom sib tw, kos duab, ua yeeb yaj kiab, ua yeeb yam, kev tiv thaiv, kev tiv thaiv cov tshuaj thiab kev npaj ua kua.
Cov ntawv thov ntawm cov celluleethethyl cellulose
Siv hauv Cov Khoom Txhim Kho Cov Khoom Txhim Kho, Tshuaj Txhuam Hniav, Tshuaj Txhuam Hniav, Cov Tshuaj Txhuam Hnav, Cov Tshuaj Txhuam Hniav, Polyvinyl Cov Tshuaj Txhuam, thiab lwm yam.
Hydroxyethyl cellulose Khoom Siv Kev Nyab Xeeb Cov Ntawv (MSDS)
1. Cov khoom muaj kev pheej hmoo ntawm cov plua plav tawg. Thaum tuav ntau ntau lossis nyob rau hauv ntau, ceev faj kom tsis txhob plua plav plua plav thiab tshem tawm hauv huab cua, thiab kom deb ntawm tshav kub, nplaim taws thiab hluav taws xob. 2. Zam cov methylcellulose hmoov los ntawm kev nkag mus thiab hu rau lub qhov muag lub ntsej muag, thiab hnav cov hnab looj ntsej muag thiab kev nyab xeeb goggles thaum lub sijhawm ua haujlwm. 3. Cov khoom lag luam yog heev nplua me thaum ntub, thiab cov hmoov methylcellulose yuav tsum tau ntxuav kom zoo rau lub sijhawm thiab kev kho mob hauv tsev yuav tsum tau ua.
Kev khaws cia thiab tsheb thauj mus los ntawm hydroxyethyl cellulose
Pob: Ob lub hnab txheej, cov ntawv txheej txheej sab nraud, puab polyethylene zaj duab xis hnab, net hnyav 20kg lossis 25kg ib lub hnab.
Kev khaws ntaub ntawv thiab kev thauj mus los: khw hauv kev ua pa thiab qhuav hauv tsev, thiab xyuam xim rau ya raws. Nag thiab lub hnub tiv thaiv thaum thauj mus los.
Kev npaj cov qauv ntawm hydroxyethyl cellulose
Txoj Kev 1: Soak Raw Paj Rwb Linters lossis Refined Pulp hauv 30% Lus Mentse, Coj nws tawm tom qab ib nrab ib teev, thiab nias. Nias kom txog thaum qhov sib piv ntawm Alkali-dej cov ntsiab lus nce txog 1: 2.8, thiab txav mus rau ib lub tshuab crushing rau crushing. Tso cov pob zeb tawg rau cov hwj kais. Muab khi thiab khiav tawm, muaj cov nitrogen. Tom qab hloov huab cua hauv lub hwj kais nrog nitrogen, nias rau hauv cov ethylened ethylene oxide kua. Rov qab ua rau txias thaum 25 ° C rau 2 h kom tau txais cov roj cellulose hydroxyethyl cellulose. Ntxuav cov khoom crude nrog dej cawv thiab kho tus nqi PH rau 4-6 los ntawm kev ntxiv acetic acid. Ntxiv glyoxal rau kev sib txuas hla thiab kev laus, sai sai ntxuav nrog dej, thiab thaum kawg centrifuge, qhuav, qhuav thiab zom cov roj cellulose.
Txoj kev 2: Alkali cellulose yog lub cuab yeej muaj zog, txhua pawg hydroxyl, cov pab pawg hydroxyl ntau dua los tsim hydroxyethyl cellulose. Soak raw rwb linters los yog ua kom zoo ntsws hauv 30% ua kua caustic dej qab zib, coj nws tawm thiab nias tom qab ib nrab ib teev. Nyem kom txog thaum qhov sib piv ntawm cov dej alkaline nce mus txog 1: 2.8, tom qab ntawd crush. Tso lub pulverized alkali cellulose rau hauv cov tshuaj tiv thaiv kab mob, ntim nws, sau nws, sau cov tshuab hluav taws xob, thiab cov nitrogen puv los hloov huab cua hauv lub hwj txwv. Nias rau hauv cov dej ua ntej-txias ua kua, muab cov tshuaj tiv thaiv txias rau ntawm txog 25 ° C rau 2 teev kom tau txais cov tshuaj uas nyoos Hydroxyethyl cellulose. Cov khoom uas nyoos yog ntxuav nrog dej cawv, neutralized rau ph 4-6 los ntawm kev ntxiv acetic acid, thiab cross-txuas nrog glyoxal rau kev laus. Tom qab ntawd nws tau ntxuav nrog dej, lub cev qhuav dej los ntawm centrifugation, qhuav thiab pulverized kom tau hydroxyethyl cellulose. Cov Khoom Siv Khoom Noj Khoom Siv Raw (kg / t) cov kab paj rwb los yog qis pulp 730-780 ua kua noj ntshav (3000) 2400 aceticid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose yog cov ntxhiab tsw dawb lossis daj thiab dej khov thiab dej kub, feem ntau insoluble nyob rau hauv feem ntau cov embic cov kuab tshuaj.
Hydroxyethyl cellulose (HEC) yog xim daj lossis lub teeb tsis zoo, cov tshuaj tsw qab, uas tau npaj los ntawm kev tawm tsam ntawm lub ntsej muag ntawm cov tshuaj tsw qab ntawm alkaline (lossis cov tshuaj ethylene eporohydin). Noism soluble cellulose neeg hais txog. Vim tias HEC muaj cov yam ntxwv zoo ntawm thickening, kev sib cais, kev tsim kho, kev tsim kho, khoom noj, ntawv thiab polymer polymnerization thiab lwm daim teb. 40 Mesh sieving tus lej ≥ 99%; muag muag kub: 135-140 ° C; pom meej ntom: 0.35-0.61g / ml; decomposition kub: 205-210 ° C; qeeb hlawv ceev; kev sib zog ntsuas kub: 23 ° C; 50% 6% ntawm RH, 29% ntawm 84% RH.
Yuav ua li cas siv hydroxyethyl cellulose
ntxiv ncaj qha rau ntawm lub sijhawm ntau lawm
1. Ntxiv cov dej huv rau ib lub thoob loj nruab nrog lub siab shear tov. tus
Hydroxyethyl cellulose
2. Pib do txuas txuas ntxiv ntawm kev nrawm nrawm thiab maj mam sieve lub hydroxyethyl cellulose rau hauv kev daws qhov uayees. tus
3. Txuas ntxiv mus kom txog thaum txhua qhov sib xyaw ua kom sov. tus
4. Tom qab ntawd ntxiv xob tiv thaiv tus neeg sawv cev, cov khoom ntxiv me me xws li pigments, kev pab AIDS, ammonia dej. tus
5. Do kom txog thaum tag nrho cov hydroxyethyl cellulose yog tag nrho cov kev daws teeb meem (lub viscosity ntawm kev ntxiv lwm cov khoom, thiab zom kom txog thaum cov khoom tiav.
Nruab nrog niam cawv
Hom qauv no yog npaj cov cawv niam nrog ntau dua kev lees paub ua ntej, thiab tom qab ntawd ntxiv nws rau cov xim looj. Qhov zoo dua ntawm hom qauv no yog tias nws tuaj yeem txuas ntxiv ntxiv rau cov xim ua tiav, tab sis nws yuav tsum khaws cia kom zoo. Cov kauj ruam yog zoo ib yam li cov kauj ruam 1-4 hauv txoj kev 1, qhov sib txawv yog tias tsis tas yuav do kom txog thaum nws tag discolves rau hauv kev daws teeb meem.
Porridge rau phenology
Txij li thaum Orgicic cov kuab tshuaj yog cov kuab tshuaj tsis zoo rau hydroxyethyl cellulose, cov kuab tshuaj hauv cov organic no tuaj yeem siv los npaj cov porridge. Feem ntau siv cov khoom siv ethanic kua yog xws li ethylene glycol thiab zaj duab xis formers (xws li diylene glycol butyl acetate) hauv cov xim tsim qauv. Dej khov dej kuj yog cov kuab tshuaj tsis zoo, yog li cov dej khov feem ntau siv ua ke nrog cov organic kua los npaj porridge. Lub hydroxyethyl cellulose ntawm cov porridge tuaj yeem txuas ncaj qha ntxiv rau cov xim, thiab hydroxyethyl cellulose tau muab faib thiab o hauv porridge. Thaum ntxiv rau cov xim, nws yaj tau tam sim ntawd thiab ua cov tuab. Tom qab ntxiv, khaws stirring kom txog thaum hydroxyethyl cellulose yog rhuav thiab hnav zoo li qub. Feem ntau, porridge yog ua los ntawm kev sib xyaw rau feem ntawm cov organic huab cua lossis dej khov nrog ib feem ntawm hydroxyethyl cellulose. Tom qab txog 6-30 feeb, lub hydroxyethyl cellulose yuav muaj hydrolyzed thiab dej txuv. Nyob rau lub caij ntuj sov, cov dej kub feem ntau dhau lawm, yog li nws tsis haum rau siv porridge.
Kev Ceev Fwm Rau Hydroxyethyl Cellulose
Txij li thaum lub ntsej muag zoo hydroxyethyl cellulose yog hmoov los yog cellulose khoom, nws yog qhov yooj yim los tswj thiab yaj nws nyob rau hauv cov khoom hauv qab no yog them sai sai rau. tus
1. Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum tau ua kom tiav mus kom txog thaum cov tshuaj tau muab cov pob tshab thiab meej. tus
2 3. Dej kub thiab pH tus nqi hauv dej muaj cov kev sib raug zoo pom tseeb rau cov kev sib cais ntawm cov cellulose ntawm hydrothethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them nyiaj. tus
4. Tsis txhob ntxiv qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydrothethyl cellulose hmoov yog ua kom sov los ntawm cov dej. Tsa tus nqi pH tom qab ua kom sov yuav pab yaj. tus
5. Raws li deb tau, ntxiv tshuaj tiv thaiv fungal thaum ntxov li sai tau. tus
6. Thaum siv cov siab-viscosity hydrotyl cellulose, lub concentration ntawm niam cawv yuav tsum tsis txhob siab dua 2.5-3%, txwv tsis pub tus niam cawv yuav nyuaj rau lis. Cov post-kho hydulose feem ntau tsis yooj yim los ua cov leeps lossis spheres, tsis yog nws ua insoluble kheej kheej kheej tom qab ntxiv dej.
Nws yog feem ntau siv los ua cov ntaub ntawv tuab, tiv thaiv, stabsion thiab ntsiav tshuaj, tshuaj ntsuab, thiab kuj siv cov khoom siv hydelopic 1. Kev npaj cov pob txha taub hau - Ntaus kev tsim tawm-tso tawm. Nws kuj tseem siv tau raws li lub stabilizer nyob rau hauv cov zaub mov.
Lub sijhawm Post: Feb-02-2023