Izakhiwo Zomzimba Nezamakhemikhali ze-Hydroxyethyl Cellulose
Izakhiwo zokubukeka Lo mkhiqizo umhlophe kuya kophuzi okhanyayo, unemicu noma uyimpuphu, awunobuthi futhi awunambitheki
Iphuzu lokuncibilika 288-290 °C (Disemba)
Ubuningi 0.75 g/mL ku-25 °C (ngokukhanya)
Ukuncibilika Kuncibilika emanzini. Akuncibiliki ezinyibilikisini ezivamile zezinto eziphilayo. Kuncibilika emanzini abandayo nasemanzini ashisayo, futhi ngokuvamile akuncibiliki ezinyibilikisini eziningi zezinto eziphilayo. Ukuncibilika kuyashintsha kancane ebangeni le-PH 2-12, kodwa ukuncibilika kwehla ngale kwaleli banga. Inemisebenzi yokujiya, ukumisa, ukubopha, ukuhlanganisa, ukuhlakaza, nokugcina umswakama. Izixazululo ezibangeni elihlukile lokuncibilika zingalungiswa. Zinokuncibilika okuhle kakhulu kosawoti kuma-electrolyte.
Njenge-surfactant engeyona i-ionic, i-hydroxyethyl cellulose inezakhiwo ezilandelayo ngaphezu kokuqina, ukumisa, ukubopha, ukuntanta, ukwakha ifilimu, ukuhlakaza, ukugcina amanzi kanye nokunikeza ama-colloid avikelayo:
1. I-HEC iyancibilika emanzini ashisayo noma emanzini abandayo, izinga lokushisa eliphezulu noma ukubila ngaphandle kwemvula, ukuze ibe nezici eziningi zokuncibilika kanye nokuthamba, kanye ne-gelation engashisi;
2. Ayiyona i-ionic futhi ingahambisana nezinye izinhlobo eziningi zama-polymer ancibilika emanzini, ama-surfactant, kanye nosawoti. Iyi-colloidal thickener enhle kakhulu yezixazululo ze-electrolyte ezigcwele kakhulu;
3. Umthamo wokugcina amanzi uphakeme ngokuphindwe kabili kunowe-methyl cellulose, futhi unokulawulwa okungcono kokugeleza kwamanzi.
4. Uma kuqhathaniswa ne-methyl cellulose eyaziwayo kanye ne-hydroxypropyl methyl cellulose, ikhono lokuhlakaza le-HEC libi kakhulu, kodwa ikhono lokuvikela i-colloid yilona elinamandla kakhulu.
Izidingo zobuchwepheshe kanye nezindinganiso zekhwalithi ze-hydroxyethyl cellulose
Izinto: Ukufakwa esikhundleni kwe-Index molar (MS) 2.0-2.5 Umswakama (%) ≤5 Amanzi angancibiliki (%) ≤0.5 Inani le-PH 6.0-8.5 Insimbi esindayo (ug/g) ≤20 Umlotha (%) ≤5 Ukuqina (mpa. s) 2% 20 ℃ isixazululo samanzi 5-60000 i-lead (%) ≤0.001
Ukusetshenziswa kwe-hydroxyethyl cellulose
【Sebenzisa 1】Isetshenziswa njenge-surfactant, i-latex thickener, i-colloidal protective agent, i-oil exploration fracturing fluid, i-polystyrene kanye ne-polyvinyl chloride dispersant, njll.
[Ukusetshenziswa 2] Isetshenziswa njengesithambisi kanye nesinciphisi sokulahlekelwa uketshezi koketshezi lokubhoboza olusekelwe emanzini kanye noketshezi lokuqedela, futhi inomphumela osobala wokujiya koketshezi lokubhoboza olune-brine. Ingasetshenziswa futhi njengesinciphisi sokulahlekelwa uketshezi lwesimende samafutha. Ingaxhunyaniswa nama-ion ensimbi e-polyvalent ukuze kwakheke ijeli.
[Ukusetshenziswa 3] Lo mkhiqizo usetshenziswa njenge-polymeric dispersant yoketshezi lwe-gel fracturing olusekelwe emanzini, i-polystyrene kanye ne-polyvinyl chloride ekumbeni i-fracturing. Ungasetshenziswa futhi njenge-emulsion thickener embonini yopende, i-hygrostat embonini ye-elekthronikhi, i-cement anticoagulant kanye ne-ejenti yokugcina umswakama embonini yokwakha. I-glazing kanye ne-toothpaste binder embonini ye-ceramic. Iphinde isetshenziswe kabanzi ekunyatheliseni nasekudayeni, ezindwangu, ekwenzeni amaphepha, kwezokwelapha, ekuhlanzeni, ekudleni, osikilidi, ezibulala-zinambuzane kanye nasezintweni zokucima umlilo.
[Ukusetshenziswa 4] Isetshenziswa njenge-surfactant, i-ejenti yokuvikela i-colloidal, i-emulsification stabilizer ye-vinyl chloride, i-vinyl acetate kanye nezinye izinto ezihlanganisiwe, kanye ne-viscosifier, i-dispersant, kanye ne-dispersion stabilizer ye-latex. Isetshenziswa kabanzi ekumbozeni, kumafayibha, ekudayini, ekwenzeni amaphepha, ezimonyweni, emithini, ezibulala-zinambuzane, njll. Iphinde isetshenziswe kakhulu embonini yokuhlola uwoyela kanye nemishini.
【Use 5】I-Hydroxyethyl cellulose inemisebenzi yokusebenza kobuso, ukuqina, ukumiswa, ukubopha, ukuhlanganisa, ukwakha ifilimu, ukusabalalisa, ukugcinwa kwamanzi kanye nokunikeza isivikelo kumalungiselelo emithi eqinile kanye noketshezi.
Ukusetshenziswa kwe-hydroxyethyl cellulose
Isetshenziswa ekumbozweni kwezakhiwo, izimonyo, amazinyo okuxubha, ama-surfactants, ama-latex thickeners, ama-colloidal protective agents, ama-oil fracturing fluids, ama-polystyrene nama-polyvinyl chloride dispersants, njll.
Ishidi Ledatha Lokuphepha Kwezinto Ze-Hydroxyethyl Cellulose (MSDS)
1. Umkhiqizo unobungozi bokuqhuma kothuli. Uma uphatha ubuningi obukhulu noma ngobuningi, qaphela ukuthi ugweme ukubekwa kothuli emoyeni, futhi ugcine kude nokushisa, izinhlansi, amalangabi kanye nogesi ongashintshi. 2. Gwema i-methylcellulose powder ukuthi ingangeni futhi ithinte amehlo, futhi gqoka imaski yokuhlunga kanye nezibuko zokuphepha ngesikhathi sokusebenza. 3. Umkhiqizo uyashelela kakhulu uma umanzi, futhi i-methylcellulose powder echithekile kufanele ihlanzwe ngesikhathi futhi kufanele kwenziwe ukwelashwa okulwa nokushelela.
Izici zokugcina nezokuthutha ze-hydroxyethyl cellulose
Ukupakisha: izikhwama ezinezingqimba ezimbili, isikhwama sephepha esihlanganisiwe sangaphandle, isikhwama sefilimu ye-polyethylene yangaphakathi, isisindo esiphelele esingu-20kg noma u-25kg ngesikhwama ngasinye.
Indawo yokugcina kanye nokuthuthwa: Gcina endaweni enomoya futhi eyomile ngaphakathi endlini, futhi unake umswakama. Ukuvikelwa kwemvula nelanga ngesikhathi sokuthuthwa.
Indlela yokulungiselela i-hydroxyethyl cellulose
Indlela 1: Cwilisa ama-linters kakotini aluhlaza noma i-pulp ecolisisiwe ku-30% lye, uyikhiphe ngemva kwesigamu sehora, bese ucindezela. Cindezela kuze kube yilapho isilinganiso sokuqukethwe kwamanzi e-alkali sifinyelela ku-1:2.8, bese uhambisa kudivayisi yokuchoboza ukuze uchoboze. Faka i-alkali fibre echotshoziwe eketheni yokusabela. Ivalwe futhi ikhishwe, igcwaliswe nge-nitrogen. Ngemva kokufaka umoya eketheni nge-nitrogen, cindezela ku-ethylene oxide liquid epholile. Phendula ngaphansi kokupholisa ku-25°C amahora ama-2 ukuze uthole i-hydroxyethyl cellulose engahluziwe. Geza umkhiqizo ongahluziwe ngotshwala bese ulungisa inani le-pH libe ngu-4-6 ngokufaka i-acetic acid. Faka i-glyoxal ukuze uhlanganise futhi uluphale, geza ngokushesha ngamanzi, bese ekugcineni uyi-centrifuge, yomise, bese uyigaya ukuze uthole i-hydroxyethyl cellulose engahluziwe.
Indlela 2: I-alkali cellulose iyi-polymer yemvelo, indandatho ngayinye yesisekelo sefayibha iqukethe amaqembu amathathu e-hydroxyl, iqembu le-hydroxyl elisebenza kakhulu liyasabela ukuze lenze i-hydroxyethyl cellulose. Cwilisa ama-linters kakotini aluhlaza noma i-pulp ecociwe ku-30% we-caustic soda ewuketshezi, uyikhiphe bese ucindezela ngemva kwesigamu sehora. Cindezela kuze kube yilapho isilinganiso samanzi e-alkaline sifinyelela ku-1:2.8, bese uyichoboza. Faka i-alkaline cellulose ecoliwe eketheni yokusabela, uyivale, uyivase, uyigcwalise nge-nitrogen, bese uphinda uvase kanye nokugcwalisa i-nitrogen ukuze ungene esikhundleni somoya oseketheni. Cindezela ku-ethylene oxide liquid epholile ngaphambilini, faka amanzi okupholisa ejazini leketheni yokusabela, bese ulawula ukusabela cishe ku-25°C amahora ama-2 ukuze uthole i-hydroxyethyl cellulose engahluziwe. Umkhiqizo ongahluziwe ugezwa ngotshwala, uncishiswe ube yi-pH 4-6 ngokungeza i-acetic acid, bese uxhunyaniswa ne-glyoxal yokuguga. Bese igezwa ngamanzi, ikhishwe amanzi nge-centrifugation, yomiswe bese ihluzwa ukuze kutholakale i-hydroxyethyl cellulose. Ukusetshenziswa kwezinto ezingavuthiwe (kg/t) ama-linters kakotini noma i-pulp ephansi 730-780 i-caustic soda ewuketshezi (30%) 2400 i-ethylene oxide 900 utshwala (95%) 4500 i-acetic acid 240 i-glyoxal (40%) 100-300
I-Hydroxyethyl cellulose iyimpuphu emhlophe noma ephuzi engenaphunga, engenambitheki futhi egeleza kalula, encibilika emanzini abandayo nasemanzini ashisayo, ngokuvamile engancibiliki ezincibilikisini eziningi eziphilayo.
I-Hydroxyethyl cellulose (HEC) iyisithako esimhlophe noma esiphuzi esikhanyayo, esingenaphunga, esingenabo ubuthi esinama-fibrous noma esiwuphuphu, esilungiswa ngokusabela kwe-etherification kwe-alkaline cellulose kanye ne-ethylene oxide (noma i-chlorohydrin). Ama-nonionic soluble cellulose ethers. Ngenxa yokuthi i-HEC inezakhiwo ezinhle zokujiya, ukumisa, ukuhlakaza, ukuhlanganisa, ukubopha, ukwakha ifilimu, ukuvikela umswakama kanye nokunikeza i-colloid evikelayo, isetshenziswe kabanzi ekuhloleni uwoyela, ukumboza, ukwakha, imithi, ukudla, izindwangu, iphepha kanye ne-polymer I-Polymerization kanye neminye imikhakha. Izinga lokusieva le-mesh elingu-40 ≥ 99%; izinga lokushisa lokuthambisa: 135-140°C; ukuminyana okubonakalayo: 0.35-0.61g/ml; izinga lokushisa lokubola: 205-210°C; isivinini sokusha kancane; izinga lokushisa lokulingana: 23°C; 50% 6% ku-rh, 29% ku-84% rh.
Indlela yokusebenzisa i-hydroxyethyl cellulose
kwengezwe ngqo ngesikhathi sokukhiqiza
1. Faka amanzi ahlanzekile ebhakedeni elikhulu elinomshini wokuxuba osezingeni eliphezulu.
I-Hydroxyethyl cellulose
2. Qala ukuvuselela njalo ngesivinini esiphansi bese uhlinza kancane kancane i-hydroxyethyl cellulose ibe yisisombululo ngokulinganayo.
3. Qhubeka uvuselela kuze kube yilapho zonke izinhlayiya zimanzi.
4. Bese wengeza into yokuvikela umbani, izithasiselo eziyisisekelo ezifana nombala, izinsiza zokuhlakazeka, amanzi e-ammonia.
5. Hlanganisa kuze kube yilapho yonke i-hydroxyethyl cellulose incibilika ngokuphelele (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokufaka ezinye izingxenye kufomula, bese ugaya kuze kube umkhiqizo oqediwe.
Ifakwe utshwala be-mama
Le ndlela iwukulungisa utshwala obungumama ngokugxila okuphezulu kuqala, bese ulufaka kupende we-latex. Inzuzo yale ndlela ukuthi inokuguquguquka okukhulu futhi ingafakwa ngqo kupende oqediwe, kodwa kufanele igcinwe kahle. Izinyathelo zifana neZinyathelo 1-4 kuMethod 1, umehluko ukuthi asikho isidingo sokuxubha kuze kube yilapho luncibilika ngokuphelele lube yisisombululo esiqinile.
Iphalishi le-phenology
Njengoba izinyibilikisi eziphilayo ziyizinyibilikisi ezimbi ze-hydroxyethyl cellulose, lezi zinyibilikisi eziphilayo zingasetshenziswa ukulungiselela iphalishi. Izinyibilikisi eziphilayo ezisetshenziswa kakhulu yiziketshezi eziphilayo ezifana ne-ethylene glycol, i-propylene glycol kanye ne-film formers (njenge-ethylene glycol noma i-diethylene glycol butyl acetate) ekwakhiweni kopende. Amanzi eqhwa nawo ayizinyibilikisi ezimbi, ngakho-ke amanzi eqhwa avame ukusetshenziswa kanye noketshezi eziphilayo ukulungiselela iphalishi. I-hydroxyethyl cellulose yephalishi ingafakwa ngqo kupende, kanti i-hydroxyethyl cellulose ihlukaniswe futhi yavuvukala ephalishini. Uma ifakwa kupende, iyancibilika ngokushesha futhi isebenze njengesithambisi. Ngemva kokungeza, qhubeka uvuselela kuze kube yilapho i-hydroxyethyl cellulose incibilika ngokuphelele futhi ifana. Ngokuvamile, iphalishi lenziwa ngokuxuba izingxenye eziyisithupha ze-organic solvent noma amanzi eqhwa nengxenye eyodwa ye-hydroxyethyl cellulose. Ngemva kwemizuzu engaba ngu-6-30, i-hydroxyethyl cellulose izoncibilika futhi ivuvuke ngokusobala. Ehlobo, izinga lokushisa lamanzi ngokuvamile liphezulu kakhulu, ngakho-ke akufaneleki ukusebenzisa iphalishi.
Izinyathelo Zokuqapha Nge-Hydroxyethyl Cellulose
Njengoba i-hydroxyethyl cellulose ephathwe phezulu iyi-powder noma i-cellulose eqinile, kulula ukuyiphatha nokuyincibilikisa emanzini inqobo nje uma izinto ezilandelayo ziqashelwa.
1. Ngaphambi nangemva kokufaka i-hydroxyethyl cellulose, kumele ivuselelwe njalo kuze kube yilapho ikhambi selicacile futhi licacile ngokuphelele.
2. Kumele ihlungwe kancane kancane ethangini lokuxuba, ungafaki ngqo inani elikhulu le-hydroxyethyl cellulose noma i-hydroxyethyl cellulose elakhe izigaxa namabhola ethangini lokuxuba. 3. Izinga lokushisa lamanzi kanye nenani le-PH emanzini kunobuhlobo obusobala nokuncibilika kwe-hydroxyethyl cellulose, ngakho-ke kufanele kunakwe ngokukhethekile.
4. Ungafaki ezinye izinto ze-alkaline engxubeni ngaphambi kokuba i-hydroxyethyl cellulose powder ifudumale emanzini. Ukuphakamisa inani le-pH ngemva kokufudumala kuzosiza ukuncibilikisa.
5. Kangangokunokwenzeka, engeza umuthi wokulwa nesikhunta ngokushesha okukhulu.
6. Uma usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, ukugcwala kotshwala obungumama akufanele kube ngaphezu kuka-2.5-3%, ngaphandle kwalokho utshwala obungumama buzoba nzima ukusingatha. I-hydroxyethyl cellulose eselashwe ngemva kokwelashwa ngokuvamile akulula ukwenza izigaxa noma ama-sphere, futhi ngeke yakhe ama-colloid ayindilinga angancibiliki ngemva kokufaka amanzi.
Ngokuvamile isetshenziswa njengesithambisi, isivikelo, isinamathelisi, isiqinisi kanye nesithasiselo sokulungiselela i-emulsion, i-jelly, amafutha okugcoba, i-lotion, isihlanzi samehlo, i-suppository kanye nethebhulethi, futhi isetshenziswa njengejeli elimanzi kanye nezinto zamathambo. 1. Ukulungiswa kwamalungiselelo okukhululwa okuqhubekayo kohlobo lwamathambo. Ingasetshenziswa futhi njengesiqinisi ekudleni.
Isikhathi sokuthunyelwe: Feb-02-2023