I-Hydroxyethyl Cellulose yoMzimba kunye neePropati zeMichiza
Iimpawu zembonakalo Le mveliso imhlophe ukuya kwifibrous etyheli ekhanyayo okanye i-powdery eqinileyo, ayinayo ityhefu kwaye ayinancasa
Indawo yokunyibilika 288-290 °C (dec.)
Uxinzelelo 0.75 g/mL ku-25 °C(lit.)
Ukunyibilika Ukunyibilika emanzini.Ukunganyibiliki kwizinyibilikisi eziqhelekileyo eziphilayo.Iyanyibilika kumanzi abandayo nakumanzi ashushu, kwaye ayinyibiliki ngokubanzi kwizinyibilikisi ezininzi zezinto eziphilayo.I-viscosity itshintsha kancinci kuluhlu lwexabiso le-PH 2-12, kodwa i-viscosity iyancipha ngaphaya kolu luhlu.Inemisebenzi yokuqina, ukuxhoma, ukubopha, ukumilisela, ukusabalalisa, kunye nokugcina ukufuma.Izisombululo kwiindidi ezahlukeneyo ze-viscosity zinokulungiswa.Inonyibiliko olulungileyo lwetyuwa kwi-electrolytes.
Njenge-non-ionic surfactant, i-hydroxyethyl cellulose inezi mpawu zilandelayo ukongeza ekujikeni, ukuxhoma, ukubopha, ukudada, ukwenza ifilim, ukusasaza, ukugcina amanzi kunye nokubonelela ngee-colloids ezikhuselayo:
1. I-HEC iyancibilika emanzini atshisayo okanye kumanzi abandayo, ukushisa okuphezulu okanye ukubilisa ngaphandle kwemvula, ukuze ibe noluhlu olubanzi lwe-solubility kunye neempawu ze-viscosity, kunye ne-gelation engeyona i-thermal;
2. Ayina-ionic kwaye inokuhlalisana kunye noluhlu olubanzi lwezinye iipolymers ezinyibilikayo zamanzi, i-surfactants, kunye neetyuwa.Yinto egqwesileyo ye-colloidal thickener yezisombululo eziphezulu ze-electrolyte;
3. Umthamo wokugcinwa kwamanzi uphindwe kabini kunalowo we-methyl cellulose, kwaye unolawulo olungcono lokuhamba.
4. Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, ikhono lokusabalalisa i-HEC libi kakhulu, kodwa ikhono lokukhusela i-colloid linamandla.
Iimfuno zobugcisa kunye nemigangatho yomgangatho we-hydroxyethyl cellulose
Izinto: I-Index molar substitution (MS) 2.0-2.5 Ukufuma (%) ≤5 Amanzi anganyibilikiyo (%) ≤0.5 PH ixabiso 6.0-8.5 Intsimbi enzima (ug / g) ≤20 Umlotha (%) ≤5 Viscosity (mpa. s) 2% 20 ℃ isisombululo samanzi 5-60000 lead (%) ≤0.001
Ukusetyenziswa kwe-hydroxyethyl cellulose
【Sebenzisa i-1】 Isetyenziswa njenge-surfactant, i-latex thickener, i-agent ekhuselayo ye-colloidal, i-oyile yokuhlola i-fracturing fluid, i-polystyrene kunye ne-polyvinyl chloride dispersant, njl.
[Sebenzisa i-2] Isetyenziswa njenge-thickener kunye nesinciphisi sokuphulukana nolwelo kulwelo olusekwe emanzini okugrumba kunye nolwelo olugqityiweyo, kwaye inesiphumo esicacileyo sokuqina kwi-brine yokomba ulwelo.Isenokusetyenziswa njengesinciphisi ilahleko ulwelo kwi oyile kakuhle isamente.Inokudityaniswa kunye ne-polyvalent metal ions ukwenza ijeli.
[Sebenzisa i-3] Le mveliso isetyenziswa njenge-polymeric dispersant ye-gel-based gel fracturing fluid, i-polystyrene kunye ne-polyvinyl chloride kwi-mining fracturing.Isenokusetyenziswa njenge-emulsion thickener kwishishini lepeyinti, i-hygrostat kwishishini le-electronics, i-anticoagulant ye-cement kunye ne-agent yokugcinwa komswakama kwishishini lokwakha.I-Ceramic industry glazing kunye ne-toothpaste binder.Ikwasetyenziswa ngokubanzi ekushicileleni nasekudayeni, amalaphu, ukwenza iphepha, amayeza, ucoceko, ukutya, imidiza, izibulali-zinambuzane kunye nezinto zokucima umlilo.
[Sebenzisa i-4] Isetyenziswe njenge-surfactant, i-agent ekhuselayo ye-colloidal, i-emulsification stabilizer ye-vinyl chloride, i-vinyl acetate kunye nezinye i-emulsions, kunye ne-viscosifier, i-dispersant, kunye ne-dispersion stabilizer ye-latex.Isetyenziswa kakhulu kwizinto zokwaleka, iintsinga, ukudaya, ukwenza iphepha, izithambiso, amayeza, izibulali zinambuzane, njl.
【Sebenzisa i-5】I-Hydroxyethyl cellulose inemisebenzi yokusebenza komhlaba, ukuqina, ukuxhoma, ukubopha, ukulinganisa, ukwenza ifilimu, ukusabalalisa, ukugcinwa kwamanzi kunye nokubonelela ngokhuseleko kumayeza aqinileyo kunye namalungiselelo olwelo.
Ukusetyenziswa kwe-hydroxyethyl cellulose
Isetyenziswe kwiingubo zokwakha, izithambiso, i-toothpaste, i-surfactants, i-latex thickeners, i-colloidal protective agents, i-oil fracturing fluids, i-polystyrene kunye ne-polyvinyl chloride dispersants, njl.
Icwecwe leDatha yoKhuseleko lweMathiriyeli ye-Hydroxyethyl Cellulose (MSDS)
1. Imveliso inomngcipheko wokuqhuma uthuli.Xa uphethe izixa ezikhulu okanye ngobuninzi, qaphela ukunqanda ukubeka uthuli kunye nokuxhoma emoyeni, kwaye ugcine kude nobushushu, iintlantsi, amadangatye kunye nombane ongatshintshiyo.2. Gwema i-methylcellulose powder ekungeneni kunye nokuqhagamshelana namehlo, kwaye unxibe iimaski zokucoca kunye nezibuko zokhuseleko ngexesha lokusebenza.3. Imveliso i-slippery kakhulu xa imanzi, kwaye i-methylcellulose powder echithiweyo kufuneka ihlambuluke ngexesha kwaye unyango oluchasene ne-slip kufuneka lwenziwe.
Ukugcinwa kunye neempawu zokuthutha ze-hydroxyethyl cellulose
Ukupakisha: iingxowa eziphindwe kabini, ibhegi yephepha edibeneyo yangaphandle, isikhwama sefilimu ye-polyethylene yangaphakathi, ubunzima be-net 20kg okanye i-25kg isikhwama ngasinye.
Ukugcina nokuthutha: Gcina kwindawo engena umoya neyomileyo ngaphakathi endlwini, kwaye unike ingqalelo kubumanzi.Ukukhuselwa kwemvula kunye nelanga ngexesha lokuthutha.
Ukulungiselela indlela ye-hydroxyethyl cellulose
Indlela yoku-1: Gxisa ilitha yomqhaphu ekrwada okanye i-pulp esulungekileyo kwi-30% ye-lye, yikhuphe emva kwesiqingatha seyure, kwaye ucinezele.Cinezela kude kube umlinganiselo we-alkali-water content ufike kwi-1: 2.8, kwaye uhambe kwisixhobo sokutyumza ukutyumza.Beka ifayibha yealkali etyumkileyo kwiketile yokusabela.Itywinwe kwaye ikhutshwe, izaliswe yinitrogen.Emva kokutshintsha umoya kwiketile ngenitrogen, cinezela kulwelo olupholileyo lwe-ethylene oxide.Ukuphendula phantsi kokupholisa kwi-25°C kangangeeyure ezi-2 ukufumana i-hydroxyethyl cellulose ekrwada.Geza imveliso ekrwada ngotywala kwaye ulungelelanise ixabiso le-pH kwi-4-6 ngokufaka i-acetic acid.Yongeza i-glyoxal yokudibanisa kunye nokuguga, hlamba ngokukhawuleza ngamanzi, kwaye ekugqibeleni i-centrifuge, yome, kwaye ugaye ukuze ufumane i-cellulose enetyuwa ephantsi ye-hydroxyethyl.
Indlela yesi-2: I-Alkali cellulose i-polymer yendalo, i-fiber base base ring nganye iqukethe amaqela amathathu e-hydroxyl, iqela elisebenzayo kakhulu le-hydroxyl liphendula ukwenza i-hydroxyethyl cellulose.Gxila iilitha zomqhaphu ekrwada okanye ipulp ecociweyo kwi-30% ye-liquid caustic soda, yikhuphe kwaye ucinezele emva kwesiqingatha seyure.Cinezela kude kube umlinganiselo wamanzi e-alkaline ufike kwi-1: 2.8, uze utyumle.Beka i-alkali cellulose ehlatyiweyo kwiketile yokusabela, uyitywine, ucofe, uyigcwalise ngenitrogen, kwaye uphinde ukucoca kunye nokuzaliswa kwenitrogen ukuze ubuyisele ngokupheleleyo umoya weketile.Cinezela kulwelo olupholileyo lwe-ethylene oxide, faka amanzi okupholisa kwibhatyi yeketile yokusabela, kwaye ulawule ukusabela malunga ne-25°C kangangeeyure ezi-2 ukuze ufumane i-hydroxyethyl cellulose ekrwada.Imveliso ekrwada ihlanjwe ngotywala, ingathathi hlangothi kwi-pH 4-6 ngokufaka i-acetic acid, kunye ne-cross-linked glyoxal yokuguga.Emva koko ihlanjwe ngamanzi, ihlanjwe yi-centrifugation, yomiswe kwaye ihlanjwe ukuze ifumane i-hydroxyethyl cellulose.Ukusetyenziswa kwempahla ekrwada (kg/t) iilitha zomqhaphu okanye ipulp ephantsi 730-780 ulwelo caustic soda (30%) 2400 ethylene oxide 900 utywala (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
IHydroxyethyl cellulose ngumgubo omhlophe okanye omthubi ongenavumba, awunancasa kwaye uqukuqela ngokulula, unyibilika kumanzi abandayo nakumanzi ashushu, awunyibiliki ngokubanzi kwizinyibilikisi ezininzi zezinto eziphilayo.
I-Hydroxyethyl cellulose (HEC) yi-cellulose emhlophe okanye ekhaphukhaphu, engenavumba, engeyotyhefu okanye eqinile, elungiswa yi-etherification reaction ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin).I-Nonionic e-soluble cellulose ethers.Ngenxa yokuba i-HEC ineempawu ezintle zokuqina, ukumisa, ukusabalalisa, i-emulsifying, i-bonding, ifilimu-ifom, ukukhusela umswakama kunye nokubonelela nge-colloid ekhuselayo, isetyenziswe ngokubanzi kwi-oyile yokuhlola, iingubo, ukwakhiwa, amayeza, ukutya, i-textile, iphepha kunye ne-polymerization. kunye neminye imimandla.I-40 ye-mesh sieving rate ≥ 99%;ubushushu bokuthambisa: 135-140 ° C;ukuxinana okubonakalayo: 0.35-0.61g / ml;iqondo lokushisa lokubola: 205-210 ° C;isantya esicothayo sokutshisa;iqondo lobushushu elilinganayo: 23°C;I-50% 6% kwi-rh, i-29% kwi-84% ye-rh.
Uyisebenzisa njani i-hydroxyethyl cellulose
yongezwe ngokuthe ngqo ngexesha lemveliso
1. Yongeza amanzi acocekileyo kwibhakethi enkulu exhotyiswe ngomxube wokucheba ophezulu.i
Iselulosi yeHydroxyethyl
2. Qala ukuvuselela ngokuqhubekayo ngesantya esiphantsi kwaye usihluze ngokukhawuleza i-hydroxyethyl cellulose kwisisombululo ngokulinganayo.i
3. Qhubeka uvuselela de zonke iinqununu zifakwe.i
4. Emva koko yongeza i-arhente yokukhusela umbane, izongezo ezisisiseko ezifana ne-pigments, i-dispersion aids, amanzi e-ammonia.i
5. Gxuma de kube yonke i-cellulose ye-hydroxyethyl ichithwe ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokuba ungeze ezinye izinto kwifomula, kwaye ugaye de kube yimveliso egqityiweyo.
Ixhotyiswe ngotywala bemama
Le ndlela kukulungiselela utywala oomama kunye noxinzelelo oluphezulu kuqala, kwaye ubongeze kwipeyinti yelatex.Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwipeyinti egqityiweyo, kodwa kufuneka igcinwe ngokufanelekileyo.Amanyathelo afana naManyathelo 1-4 kwiNdlela yoku-1, umahluko kukuba akukho mfuneko yokuvuselela ide inyibilike ngokupheleleyo kwisisombululo se-viscous.
Isidudu sephenology
Ekubeni izinyibilikisi zendalo zizinyibilikisi ezihlwempuzekileyo ze-hydroxyethyl cellulose, ezi zinyibilikisi zendalo zingasetyenziselwa ukulungisa isidudu.Izona zinyibiliki zisetyenziswa ngokuqhelekileyo zilulwelo lwe-organic ezifana ne-ethylene glycol, i-propylene glycol kunye ne-filmforms (ezifana ne-ethylene glycol okanye i-diethylene glycol butyl acetate) kwimiqulu yepeyinti.Amanzi omkhenkce nawo asisinyibilikisi esilambathayo, ngoko ke amanzi omkhenkce adla ngokusetyenziswa kunye nolwelo lwendalo ukulungiselela isidudu.I-cellulose ye-hydroxyethyl ye-porridge inokudibaniswa ngokuthe ngqo kwipeyinti, kwaye i-cellulose ye-hydroxyethyl iye yahlula kwaye yahlutha kwi-porridge.Xa ifakwe kwipeyinti, iyancibilika ngokukhawuleza kwaye isebenze njenge-thickener.Emva kokongeza, qhubeka uvuselela de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye ifane.Ngokubanzi, isidudu senziwa ngokuxuba iinxalenye ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose.Emva kwemizuzu emi-6 ukuya kwengama-30, i-hydroxyethyl cellulose iya kwenziwa i-hydrolyzed kwaye idumbe ngokucacileyo.Ehlotyeni, ubushushu bamanzi buphezulu kakhulu, ngoko ke akufanelekanga ukusebenzisa isidudu.
Amanyathelo okulumkisa i-hydroxyethyl cellulose
Ekubeni i-cellulose ye-hydroxyethyl ephathwayo i-powder okanye i-cellulose eqinile, kulula ukuyiphatha kunye nokuyinyibilika emanzini nje ukuba ezi zinto zilandelayo ziqwalaselwe.i
1. Ngaphambi nangemva kokongeza i-hydroxyethyl cellulose, kufuneka iqhutywe ngokuqhubekayo de isisombululo sibonakale ngokucacileyo kwaye sicace.i
2. Kufuneka ihlanjululwe ngokukhawuleza kwitanki yokuxuba, ungafaki ngokuthe ngqo inani elikhulu le-hydroxyethyl cellulose okanye i-hydroxyethyl cellulose eyenze izibonda kunye neebhola kwi-tank yokuxuba.3. Ubushushu bamanzi kunye nexabiso le-PH emanzini linobudlelwane obucacileyo bokuchithwa kwe-hydroxyethyl cellulose, ngoko ke ingqwalasela ekhethekileyo kufuneka ihlawulwe.i
4. Musa ukongeza ezinye izinto zealkaline kumxube phambi kokuba umgubo we-hydroxyethyl cellulose ufudunyezwe emanzini.Ukuphakamisa ixabiso le-pH emva kokufudumala kuya kunceda ukunyibilika.i
5. Kangangoko kunokwenzeka, yongeza i-anti-fungal agent ngokukhawuleza.i
6. Xa usebenzisa i-high-viscosity hydroxyethyl cellulose, ukuxinwa kotywala komama akufanele kube ngaphezu kwe-2.5-3%, ngaphandle koko utywala omama kuya kuba nzima ukuphatha.Iselulosi ye-hydroxyethyl yasemva kokunyanga ayilulanga ngokubanzi ukwenza amaqhuma okanye iingqukuva, kwaye ayiyi kubumba i-insoluble spherical colloids emva kokongeza amanzi.
Ngokuqhelekileyo isetyenziswe njenge-thickener, i-agent ekhuselayo, i-adhesive, i-stabilizer kunye ne-additive yokulungiswa kwe-emulsion, i-jelly, i-ointment, i-lotion, i-eye cleanser, i-suppository kunye ne-tablet, kwaye isetyenziswe njenge-gel ye-hydrophilic kunye ne-skeleton material 1. Ukulungiswa kwe-skeleton- chwetheza amalungiselelo okukhululwa okuzinzileyo.Isenokusetyenziswa njengesizinzisi ekutyeni.
Ixesha lokuposa: Feb-02-2023