Iipropati zeHydroxyethyl Cellulose zePhysical and Chemical
Iimpawu zenkangeleko Le mveliso imhlophe ukuya kumthubi okhanyayo, inemicu okanye iqinile njengomgubo, ayinatyhefu kwaye ayinancasa
Iqondo lokunyibilika 288-290 °C (ngoDisemba)
Uxinano 0.75 g/mL kwi-25 °C (elithayo)
Ukunyibilika Inyibilika emanzini. Ayinyibiliki kwizinyibilikisi eziqhelekileyo zendalo. Iyanyibilika emanzini abandayo namanzi ashushu, kwaye ngokubanzi ayinyibiliki kwizinyibilikisi ezininzi zendalo. I-viscosity itshintsha kancinci kuluhlu lwe-PH 2-12, kodwa i-viscosity iyancipha ngaphaya kolu luhlu. Inemisebenzi yokuqina, ukuxhoma, ukubopha, ukuxuba, ukusasaza, kunye nokugcina umswakama. Izisombululo kwiindidi ezahlukeneyo ze-viscosity zinokulungiswa. Inonyibiliko lwetyuwa oluhle kakhulu kwii-electrolytes.
Njenge-surfactant engeyiyo i-ionic, i-hydroxyethyl cellulose ineempawu ezilandelayo ukongeza ekuqineni, ekumiseni, ekubopheni, ekuntanteni, ekwenzeni ifilimu, ekuchitheni, ekugcineni amanzi nasekuboneleleni ngee-colloids ezikhuselayo:
1. I-HEC iyanyibilika emanzini ashushu okanye emanzini abandayo, kubushushu obuphezulu okanye ibila ngaphandle kwemvula, ukuze ibe noluhlu olubanzi lweempawu zokunyibilika kunye ne-viscosity, kunye ne-gelation engashushu;
2. Ayisiyo ionic kwaye ingasebenza kunye nezinye iipolymers ezinyibilikayo emanzini, ii-surfactants, kunye neetyuwa. Sisithambisi esibalaseleyo se-colloidal kwizisombululo ze-electrolyte ezinoxinzelelo oluphezulu;
3. Umthamo wokugcina amanzi uphindwe kabini kunowe-methyl cellulose, kwaye unolawulo olungcono lokuhamba kwamanzi.
4. Xa kuthelekiswa ne-methyl cellulose eyaziwayo kunye ne-hydroxypropyl methyl cellulose, amandla okusasaza e-HEC ngawona mabi kakhulu, kodwa amandla okukhusela e-colloid ngawona anamandla.
Iimfuno zobugcisa kunye nemigangatho yomgangatho we-hydroxyethyl cellulose
Izinto: Ukutshintshwa kwe-Index molar (MS) 2.0-2.5 Ukufuma (%) ≤5 Ukunganyibiliki kwamanzi (%) ≤0.5 Ixabiso le-PH 6.0-8.5 Isinyithi esinzima (ug/g) ≤20 Uthuthu (%) ≤5 Ukuqina (mpa. s) 2% 20 ℃ isisombululo samanzi 5-60000 i-lead (%) ≤0.001
Ukusetyenziswa kwe-hydroxyethyl cellulose
【Sebenzisa 1】Isetyenziswa njenge-surfactant, i-latex thickener, i-colloidal protective agent, i-oil exploration fracturing fluid, i-polystyrene kunye ne-polyvinyl chloride dispersant, njl.
[Ukusetyenziswa 2] Isetyenziswa njengesithambisi-manzi kunye nesithombisi-manzi esinciphisa ukulahleka kolwelo kwiziselo zokubhola ezisekelwe emanzini kunye neziselo zokugqiba, kwaye inefuthe elicacileyo lokutyeba kwiziselo zokubhola ezinetyuwa. Ingasetyenziswa kwakhona njengesithombisi-manzi esinciphisa ukulahleka kolwelo kwisamente ye-oyile. Ingadityaniswa nee-ion zesinyithi ezi-polyvalent ukwenza ijeli.
[Ukusetyenziswa 3] Le mveliso isetyenziswa njenge-polymeric dispersant kwi-water-based gel fracturing fluid, i-polystyrene kunye ne-polyvinyl chloride kwimigodi ye-fracturing. Ingasetyenziswa njenge-emulsion thickener kwishishini lepeyinti, i-hygrostat kwishishini le-elektroniki, i-samente anticoagulant kunye ne-agent yokugcina umswakama kwishishini lokwakha. I-ceramic shishini le-glazing kunye ne-toothpaste binder. Ikwasetyenziswa kakhulu ekuprinteni nasekudayeni, kwiimpahla zelaphu, ekwenzeni amaphepha, kumayeza, kucoceko, ekutyeni, kwiicuba, kwii-pesticides nakwii-fire cimang agents.
[Ukusetyenziswa 4] Isetyenziswa njenge-surfactant, i-colloidal protective agent, i-emulsification stabilizer ye-vinyl chloride, i-vinyl acetate kunye nezinye ii-emulsions, kunye ne-viscosifier, i-dispersant, kunye ne-dispersion stabilizer ye-latex. Isetyenziswa kakhulu kwiingubo, kwiifayibha, ekudayweni, ekwenzeni amaphepha, kwizinto zokuthambisa, kumayeza, kwiipilisi zokubulala izinambuzane, njl. Ikwasetyenziswa kakhulu kushishino lokuhlola ioyile kunye noomatshini.
【Sebenzisa 5】I-Hydroxyethyl cellulose inemisebenzi yokusebenza komphezulu, ukuqina, ukuxhoma, ukubopha, ukuxuba, ukwenza ifilimu, ukusasaza, ukugcina amanzi kunye nokubonelela ngokhuseleko kumalungiselelo aqinileyo namanzi eyeza.
Ukusetyenziswa kwe-hydroxyethyl cellulose
Isetyenziswa kwiingubo zokwakha, kwizinto zokuthambisa, i-toothpaste, izinto ezibangela ukudumba, izinto zokuthambisa i-latex, izinto ezikhuselayo ze-colloidal, izinto ezibangela ukuqhekeka kweoyile, izinto ezisasaza i-polystyrene kunye ne-polyvinyl chloride, njl.njl.
Iphepha leDatha yoKhuseleko lweZinto zeHydroxyethyl Cellulose (MSDS)
1. Imveliso inomngcipheko wokuqhuma kothuli. Xa uphatha ubuninzi okanye ngobuninzi, lumka ungafaki uthuli emoyeni, kwaye ugcine kude nobushushu, iintlantsi, amadangatye kunye nombane ongashukumiyo. 2. Kuphephe ukuba i-methylcellulose powder ingangeni kwaye iqhagamshelane namehlo, kwaye unxibe iimaski zesihluzo kunye neeglasi zokhuseleko ngexesha lokusebenza. 3. Imveliso iyatyibilika kakhulu xa imanzi, kwaye i-methylcellulose powder echithekileyo kufuneka icocwe ngexesha kwaye unyango oluchasene nokutyibilika kufuneka lwenziwe.
Iimpawu zokugcina kunye nezothutho ze-hydroxyethyl cellulose
Ukupakisha: iingxowa ezineengqimba ezimbini, ingxowa yephepha edityanisiweyo yangaphandle, ingxowa yefilimu ye-polyethylene yangaphakathi, ubunzima obupheleleyo yi-20kg okanye i-25kg ngengxowa nganye.
Ukugcinwa kunye nokuthuthwa: Gcina kwindawo enomoya opholileyo neyomileyo ngaphakathi, kwaye uqaphele ukufuma. Ukukhuselwa yimvula nelanga ngexesha lokuthuthwa.
Indlela yokulungiselela i-hydroxyethyl cellulose
Indlela yoku-1: Nciphisa iilinter zekotoni eluhlaza okanye i-pulp ecociweyo kwi-30% ye-lye, yikhuphe emva kwesiqingatha seyure, uze ucinezele. Cinezela ude umlinganiselo womxholo wamanzi e-alkali ufikelele kwi-1:2.8, uze uye kwisixhobo sokutyumza ukuze utyumze. Faka i-alkali fiber etyumkileyo kwi-kettle yokusabela. Ivalwe kwaye ikhutshwe, izaliswe yi-nitrogen. Emva kokutshintsha umoya oseketileni nge-nitrogen, cinezela kwi-ethylene oxide liquid epholileyo. Yenza oku xa ipholile kwi-25°C kangangeeyure ezi-2 ukuze ufumane i-hydroxyethyl cellulose ekrwada. Hlamba imveliso ekrwada ngotywala kwaye ulungise ixabiso le-pH ukuya kwi-4-6 ngokongeza i-acetic acid. Yongeza i-glyoxal ukuze idibanise kwaye iguge, hlamba ngokukhawuleza ngamanzi, uze ekugqibeleni uyi-centrifuge, yomise, uze uyigaye ukuze ufumane i-hydroxyethyl cellulose enetyuwa ephantsi.
Indlela yesi-2: I-alkali cellulose yipolymer yendalo, isangqa ngasinye sesiseko sefayibha sinamaqela amathathu e-hydroxyl, iqela le-hydroxyl elisebenzayo kakhulu liyasabela ukwenza i-hydroxyethyl cellulose. Nciphisa ii-linters zekotoni eluhlaza okanye i-pulp ecociweyo kwi-30% ye-liquid caustic soda, uyikhuphe kwaye uyicinezele emva kwesiqingatha seyure. Cinezela ude umlinganiselo wamanzi e-alkaline ufikelele kwi-1:2.8, uze uyityumze. Faka i-alkaline cellulose ecoliweyo kwi-reaction kettle, uyivale, uyivase, uyizalise nge-nitrogen, kwaye uphinde uvase kunye nokuzalisa nge-nitrogen ukuze ubuyisele ngokupheleleyo umoya kwi-kettle. Cinezela kwi-ethylene oxide liquid epholileyo, faka amanzi okupholisa kwijakethi ye-reaction kettle, kwaye ulawule i-reaction malunga nama-25°C kangangeeyure ezi-2 ukuze ufumane i-crude hydroxyethyl cellulose. Imveliso e-crude ihlanjwa ngotywala, i-neutralized ukuya kwi-pH 4-6 ngokongeza i-acetic acid, kwaye idityaniswe ne-glyoxal yokuguga. Emva koko ihlanjwa ngamanzi, isuswe ngamanzi nge-centrifugation, yomiswe ize icolwe ukuze kufunyanwe i-hydroxyethyl cellulose. Ukusetyenziswa kwezinto eziluhlaza (kg/t) ii-cotton linters okanye i-pulp ephantsi 730-780 i-liquid caustic soda (30%) 2400 i-ethylene oxide 900 i-alcohol (95%) 4500 i-acetic acid 240 i-glyoxal (40%) 100-300
I-Hydroxyethyl cellulose yimpuphu emhlophe okanye emthubi engenavumba, engenancasa kwaye egeleza lula, enyibilikayo emanzini abandayo nasemanzini ashushu, ngokubanzi ayinyibiliki kwiincindi ezininzi zezinto eziphilayo.
I-Hydroxyethyl cellulose (HEC) sisiqina esimhlophe okanye esikhanyayo esimthubi, esingenavumba, esingenatyhefu okanye esinomgubo, esilungiswa yi-etherification reaction ye-alkaline cellulose kunye ne-ethylene oxide (okanye i-chlorohydrin). Ii-Nonionic soluble cellulose ethers. Ngenxa yokuba i-HEC ineempawu ezilungileyo zokutyeba, ukumisa, ukusasaza, ukuhlanganisa, ukwenza ifilimu, ukukhusela umswakama kunye nokubonelela nge-colloid ekhuselayo, isetyenziswa kakhulu ekuhloleni ioyile, ukugquma, ukwakha, amayeza, ukutya, ilaphu, iphepha kunye ne-polymer I-Polymerization kunye nezinye iindawo. Izinga lokusieva le-mesh ezingama-40 ≥ 99%; ubushushu bokuthambisa: 135-140°C; uxinano olubonakalayo: 0.35-0.61g/ml; ubushushu bokubola: 205-210°C; isantya sokutsha kancinci; ubushushu bokulingana: 23°C; 50% 6% kwi-rh, 29% kwi-84% ye-rh.
Indlela yokusebenzisa i-hydroxyethyl cellulose
yongezwa ngqo ngexesha lemveliso
1. Yongeza amanzi acocekileyo kwibhakethi enkulu exhotyiswe ngomxube ocoliweyo kakhulu.
I-Hydroxyethyl cellulose
2. Qalisa ukuxuba rhoqo ngesantya esiphantsi uze ucofe kancinci i-hydroxyethyl cellulose kwisisombululo ngokulinganayo.
3. Qhubeka uvuselela ude wonke amasuntswana amanzi.
4. Emva koko yongeza into yokukhusela umbane, izongezo ezisisiseko ezifana nemibala, izixhobo zokusasaza, amanzi e-ammonia.
5. Xuba de yonke i-hydroxyethyl cellulose ichitheke ngokupheleleyo (i-viscosity yesisombululo iyanda kakhulu) ngaphambi kokongeza ezinye izinto kwifomyula, uze uyigaye ide igqitywe imveliso.
Ixhotyiswe ngotywala be-mama
Le ndlela kukulungiselela utywala obungumama ngoxinzelelo oluphezulu kuqala, uze ubongeze kwipeyinti yelatex. Inzuzo yale ndlela kukuba inokuguquguquka okukhulu kwaye inokongezwa ngokuthe ngqo kwipeyinti egqityiweyo, kodwa kufuneka igcinwe kakuhle. Amanyathelo afana namanyathelo 1-4 kwiNdlela yoku-1, umahluko kukuba akukho mfuneko yokuxubha ide inyibilike ngokupheleleyo ibe sisisombululo esiqinileyo.
Iporridge ye-phenology
Ekubeni izinyibilikisi zendalo zingezinyibilikisi kakuhle ze-hydroxyethyl cellulose, ezi zinyibilikisi zendalo zingasetyenziselwa ukulungisa iporridge. Ezona zinyibilikisi zendalo zisetyenziswa kakhulu zizinto eziphilayo ezifana ne-ethylene glycol, i-propylene glycol kunye nee-film formers (ezifana ne-ethylene glycol okanye i-diethylene glycol butyl acetate) kwiifomyula zepeyinti. Amanzi omkhenkce nawo ayisombululi sibi, ngoko ke amanzi omkhenkce adla ngokusetyenziswa kunye nezinyibilikisi zendalo ukulungiselela iporridge. I-hydroxyethyl cellulose yeporridge inokongezwa ngqo kwipeyinti, kwaye i-hydroxyethyl cellulose yahlulwe yaza yavuvukala kwiporridge. Xa yongezwa kwipeyinti, iyanyibilika ngoko nangoko kwaye isebenze njengesithambisi. Emva kokongeza, qhubeka uvuselela de i-hydroxyethyl cellulose ichithwe ngokupheleleyo kwaye ifane. Ngokubanzi, iporridge yenziwa ngokuxuba iindawo ezintandathu ze-organic solvent okanye amanzi omkhenkce kunye nenxalenye enye ye-hydroxyethyl cellulose. Emva kwemizuzu emi-6-30, i-hydroxyethyl cellulose iya kufakelwa i-hydrolyzed kwaye ivuvuke ngokucacileyo. Ehlotyeni, ubushushu bamanzi ngokubanzi buphezulu kakhulu, ngoko ke akufanelekanga ukusebenzisa iporridge.
Amanyathelo okuzikhusela kwi-hydroxyethyl cellulose
Ekubeni i-hydroxyethyl cellulose ecociweyo phezu kwayo ingumgubo okanye i-cellulose solid, kulula ukuyiphatha nokuyinyibilikisa emanzini logama nje kuthathelwa ingqalelo ezi zinto zilandelayo.
1. Ngaphambi nasemva kokufaka i-hydroxyethyl cellulose, kufuneka ixutywe rhoqo ide isisombululo sibe sobala ngokupheleleyo kwaye sicace.
2. Kufuneka ihluzwe kancinci kwi-tank yokuxuba, ungafaki ngokuthe ngqo inani elikhulu le-hydroxyethyl cellulose okanye i-hydroxyethyl cellulose eyenze amaqhuma kunye neebhola kwi-tank yokuxuba. 3. Ubushushu bamanzi kunye nexabiso le-PH emanzini zinobudlelwane obucacileyo nokunyibilika kwe-hydroxyethyl cellulose, ngoko ke kufuneka kunikwe ingqalelo ekhethekileyo.
4. Musa ukongeza ezinye izinto ze-alkaline kumxube ngaphambi kokuba umgubo we-hydroxyethyl cellulose ufudumale emanzini. Ukunyusa ixabiso le-pH emva kokufudumeza kuya kunceda ukunyibilika.
5. Kangangoko kunokwenzeka, yongeza i-anti-fungus ngokukhawuleza.
6. Xa usebenzisa i-hydroxyethyl cellulose ene-viscosity ephezulu, uxinzelelo lotywala oluvela kumama alufanele lube ngaphezulu kwe-2.5-3%, kungenjalo utywala oluvela kumama luya kuba nzima ukuluphatha. I-hydroxyethyl cellulose emva kokunyangwa ayilula ukwenza amaqhuma okanye iisphere, kwaye ayizukuba yi-colloids enganyibilikiyo emva kokongeza amanzi.
Ngokuqhelekileyo isetyenziswa njengesithambisi-mafutha, isithinteli-mafutha, isincamathelisi, isithambisi-mafutha kunye nesithambisi sokulungiselela i-emulsion, ijeli, isithambisi-mafutha, isithambisi-mafutha, isicoci-mehlo, isithambisi-mafutha kunye nethebhulethi, kwaye ikwasetyenziswa njengejeli enamathelayo kunye nezinto ze-skeleton. 1. Ukulungiswa kwamalungiselelo okukhululwa rhoqo kohlobo lwe-skeleton. Ingasetyenziswa njengesithambisi-mafutha ekutyeni.
Ixesha lokuthumela: Feb-02-2023