Hydroxyethyl Cellulose Abubuwan Jiki da Sinadarai
Kayayyakin bayyanar Wannan samfurin fari ne zuwa haske rawaya fibrous ko foda mai ƙarfi, mara guba da mara daɗi
Matsayin narkewa 288-290 °C ( Dec.)
Yawaita 0.75 g/mL a 25 ° C (lit.)
Solubility Mai narkewa a cikin ruwa. Insoluble a kowa Organic kaushi. Yana narkewa a cikin ruwan sanyi da ruwan zafi, kuma gabaɗaya baya narkewa cikin mafi yawan kaushi na halitta. Danko yana canzawa kadan a cikin kewayon ƙimar PH 2-12, amma danko yana raguwa fiye da wannan kewayon. Yana da ayyuka na thickening, suspending, dauri, emulsifying, watsawa, da kuma kula da danshi. Ana iya shirya mafita a cikin jeri daban-daban na danko. Yana da na musamman mai kyau gishiri solubility ga electrolytes.
A matsayin surfactant ba ionic ba, hydroxyethyl cellulose yana da kaddarorin masu zuwa ban da kauri, dakatarwa, ɗaure, iyo, yin fim, watsawa, riƙe ruwa da samar da colloid masu kariya:
1. HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, babban zafin jiki ko tafasa ba tare da hazo ba, don haka yana da nau'i mai yawa na solubility da halayen danko, da kuma gelation maras zafi;
2. Ba shi da ionic kuma yana iya zama tare da wasu nau'o'in nau'in polymers masu narkewa da ruwa, surfactants, da salts. Yana da kyau kwarai colloidal thickener ga high-tattara electrolyte mafita;
3. Ƙarfin ajiyar ruwa ya ninka sau biyu fiye da na methyl cellulose, kuma yana da mafi kyawun tsari.
4. Idan aka kwatanta da gane methyl cellulose da hydroxypropyl methyl cellulose, da dispersing ikon HEC ne mafi muni, amma m colloid ikon ne mafi karfi.
Bukatun fasaha da ƙa'idodin inganci don hydroxyethyl cellulose
Abubuwan: Fihirisar molar canji (MS) 2.0-2.5 Danshi (%) ≤5 Ruwa maras narkewa (%) ≤0.5 PH darajar 6.0-8.5 Karfe mai nauyi (ug/g) ≤20 Ash (%) ≤5 Danshi (mpa. s) 2% 20 ℃ maganin ruwa 5-60000 gubar (%) ≤0.001
Amfani da hydroxyethyl cellulose
【Yi amfani da 1】 An yi amfani da shi azaman surfactant, latex thickener, colloidal m wakili, mai gano fracturing ruwa, polystyrene da polyvinyl chloride dispersant, da dai sauransu.
[Amfani da 2] An yi amfani da shi azaman mai kauri da mai rage asarar ruwa don magudanar ruwa na tushen ruwa da ruwan gamawa, kuma yana da tasirin kauri a fili a cikin ruwan haƙon brine. Hakanan za'a iya amfani dashi azaman rage asarar ruwa don siminti rijiyar mai. Ana iya haɗa shi tare da ions ƙarfe na polyvalent don samar da gel.
[Amfani da 3] Ana amfani da wannan samfurin azaman tarwatsawar polymeric don ruwa na tushen ruwa, polystyrene da polyvinyl chloride a cikin haƙar ma'adinai. Hakanan za'a iya amfani dashi azaman emulsion thickener a cikin masana'antar fenti, hygrostat a cikin masana'antar lantarki, simintin rigakafin coagulant da wakili mai riƙe danshi a cikin masana'antar gini. Ceramic masana'antu glazing da man goge baki daure. Hakanan ana amfani da shi sosai wajen bugu da rini, yadi, yin takarda, magani, tsafta, abinci, sigari, magungunan kashe qwari da abubuwan kashe gobara.
[Amfani da 4] Ana amfani da shi azaman surfactant, colloidal m wakili, emulsification stabilizer don vinyl chloride, vinyl acetate da sauran emulsions, kazalika da viscosifier, dispersant, da disperssion stabilizer ga latex. Ana amfani da shi sosai a cikin sutura, zaruruwa, rini, yin takarda, kayan kwalliya, magunguna, magungunan kashe qwari, da sauransu. Hakanan yana da amfani da yawa a cikin aikin haƙon mai da masana'antar injuna.
【Yi amfani da 5】 Hydroxyethyl cellulose yana da ayyuka na surface aiki, thickening, suspending, dauri, emulsifying, film forming, dispersing, ruwa riƙewa da kuma samar da kariya a Pharmaceutical m da ruwa shirye-shirye.
Aikace-aikace na hydroxyethyl cellulose
Ana amfani da su a cikin kayan aikin gine-gine, kayan kwalliya, man goge baki, masu surfactants, masu kauri na latex, jami'an kariya na colloidal, ruwa mai karyewa, polystyrene da polyvinyl chloride dispersants, da sauransu.
Takardun Bayanan Tsaro na Abun Hydroxyethyl Cellulose (MSDS)
1. Samfurin yana da haɗarin fashewar ƙura. Lokacin yin amfani da adadi mai yawa ko a cikin girma, a kula don guje wa jibgewar ƙura da dakatarwa a cikin iska, kuma ka nisanci zafi, tartsatsin wuta, da wutar lantarki. 2. Guji foda na methylcellulose daga shiga da tuntuɓar idanu, kuma sanya abin rufe fuska na tacewa da tabarau na aminci yayin aiki. 3. Samfurin yana da laushi sosai lokacin da aka jika, kuma methylcellulose foda da aka zubar ya kamata a tsaftace shi a cikin lokaci kuma ya kamata a yi maganin anti-slip.
Halayen ajiya da sufuri na hydroxyethyl cellulose
Shiryawa: jaka biyu-Layer, Jakar takarda mai hade da waje, jakar fim din polyethylene na ciki, nauyin net 20kg ko 25kg kowace jaka.
Adana da sufuri: Ajiye a cikin busasshiyar wuri a cikin gida, kuma kula da danshi. Kariyar ruwan sama da rana yayin sufuri.
Hanyar shiri na hydroxyethyl cellulose
Hanyar 1: Sai a jiƙa ɗanyen ledar auduga ko kuma tsaftataccen ɓangaren litattafan almara a cikin kashi 30%, a fitar da shi bayan rabin sa'a, sannan a danna. Latsa har sai adadin ruwan alkali-ruwa ya kai 1:2.8, kuma matsa zuwa na'urar murkushewa don murkushewa. Saka zaren alkali da aka niƙa a cikin tukunyar amsawa. An rufe kuma an kwashe, cike da nitrogen. Bayan maye gurbin iska a cikin kettle da nitrogen, danna cikin ruwan ethylene oxide wanda aka sanyaya. Yi amsa a ƙarƙashin sanyaya a 25 ° C na sa'o'i 2 don samun ɗanyen hydroxyethyl cellulose. A wanke danyen samfurin tare da barasa kuma daidaita ƙimar pH zuwa 4-6 ta ƙara acetic acid. Ƙara glioxal don haɗin giciye da tsufa, da sauri a wanke da ruwa, kuma a ƙarshe centrifuge, bushe, da niƙa don samun ƙananan gishiri hydroxyethyl cellulose.
Hanyar 2: Alkali cellulose shine polymer na halitta, kowane zoben tushe na fiber ya ƙunshi ƙungiyoyin hydroxyl guda uku, ƙungiyar hydroxyl mafi aiki ta amsa don samar da hydroxyethyl cellulose. A jiƙa ɗanyen auduga ko kuma tsaftataccen ɓangaren litattafan almara a cikin soda caustic ruwa 30%, cire shi kuma danna bayan rabin sa'a. Matse har sai rabon ruwan alkaline ya kai 1: 2.8, sannan a murkushe shi. Saka alkali cellulose da aka niƙa a cikin tukunyar amsawa, rufe shi, shafe shi, cika shi da nitrogen, sannan a maimaita vacuumization da ciko nitrogen don maye gurbin gaba ɗaya iska a cikin kettle. Latsa cikin ruwan ethylene oxide wanda aka riga aka sanyaya, sanya ruwa mai sanyaya a cikin jaket ɗin abin amsawa, kuma sarrafa abin da ke faruwa a kusan 25 ° C na tsawon awanni 2 don samun ɗanyen hydroxyethyl cellulose. Ana wanke danyen samfurin tare da barasa, an cire shi zuwa pH 4-6 ta ƙara acetic acid, kuma an haɗa shi da glioxal don tsufa. Sa'an nan kuma a wanke shi da ruwa, a cire shi ta hanyar centrifugation, bushe da kuma niƙa don samun hydroxyethyl cellulose. Amfanin albarkatun kasa (kg/t) linters auduga ko ƙananan ɓangaren litattafan almara 730-780 ruwa caustic soda (30%) 2400 ethylene oxide 900 barasa (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose fari ne ko rawaya mara wari, mara ɗanɗano kuma foda mai sauƙi, mai narkewa a cikin ruwan sanyi da ruwan zafi, gabaɗaya maras narkewa a cikin mafi yawan kaushi.
Hydroxyethyl cellulose (HEC) fari ne ko haske rawaya, wari, mara guba fibrous ko powdery m, wanda aka shirya ta etherification dauki na alkaline cellulose da ethylene oxide (ko chlorohydrin). Nonionic soluble cellulose ethers. Saboda HEC yana da kyawawan kaddarorin thickening, dakatarwa, tarwatsawa, emulsifying, bonding, ƙirƙirar fim, kare danshi da samar da colloid mai kariya, an yi amfani dashi sosai a cikin binciken mai, sutura, gini, magani, abinci, yadi, takarda da polymer polymerization. da sauran fagage. 40 raga sieving rate ≥ 99%; zafin jiki mai laushi: 135-140 ° C; yawa na fili: 0.35-0.61g/ml; zafin jiki bazuwa: 205-210 ° C; jinkirin kona gudun; daidaitaccen zafin jiki: 23 ° C; 50% 6% a rh, 29% a 84% rh.
Yadda ake amfani da hydroxyethyl cellulose
ƙara kai tsaye a lokacin samarwa
1. Ƙara ruwa mai tsabta zuwa babban guga da aka sanye da babban mai haɗawa. da
Hydroxyethyl cellulose
2. Fara motsawa akai-akai a cikin ƙananan gudu kuma a hankali a hankali zazzage hydroxyethyl cellulose a cikin bayani daidai. da
3. Ci gaba da motsawa har sai dukkanin kwayoyin halitta sun jike. da
4. Sa'an nan kuma ƙara wakili na kariya na walƙiya, kayan haɓaka na asali irin su pigments, kayan watsawa, ruwan ammonia. da
5. Dama har sai duk hydroxyethyl cellulose ya narke gaba daya (dankowar maganin yana ƙaruwa sosai) kafin ƙara wasu abubuwan da aka gyara a cikin dabarar, da kuma kara har sai samfurin da aka gama.
Sanye take da uwa barasa
Wannan hanyar ita ce shirya giya mai uwa tare da maida hankali sosai da farko, sannan a ƙara shi zuwa fenti na latex. Amfanin wannan hanyar shine yana da mafi girman sassauci kuma ana iya ƙara shi kai tsaye zuwa fenti da aka gama, amma ya kamata a adana shi da kyau. Matakan suna kama da Matakai na 1-4 a cikin Hanyar 1, bambancin shine cewa babu buƙatar motsawa har sai ya narke gaba ɗaya a cikin bayani mai danko.
Porridge don phenology
Tun da kwayoyin kaushi ne matalauta kaushi ga hydroxyethyl cellulose, wadannan kwayoyin kaushi za a iya amfani da su shirya porridge. Abubuwan da aka fi amfani da su na kwayoyin halitta sune ruwaye masu rai irin su ethylene glycol, propylene glycol da masu yin fim (irin su ethylene glycol ko diethylene glycol butyl acetate) a cikin tsarin fenti. Ruwan kankara shima rashin ƙarfi ne, don haka ana amfani da ruwan ƙanƙara tare da ruwa mai laushi don shirya porridge. Za a iya ƙara hydroxyethyl cellulose na porridge kai tsaye zuwa fenti, kuma an raba hydroxyethyl cellulose kuma an kumbura a cikin porridge. Lokacin da aka ƙara zuwa fenti, ya narke nan da nan kuma yana aiki azaman mai kauri. Bayan ƙarawa, ci gaba da motsawa har sai hydroxyethyl cellulose ya narkar da shi kuma ya zama daidai. Gabaɗaya, ana yin porridge ne ta hanyar haɗa ɓangarori shida na kaushi mai ƙarfi ko ruwan kankara tare da wani ɓangaren hydroxyethyl cellulose. Bayan kamar minti 6-30, hydroxyethyl cellulose zai zama hydrolyzed kuma ya kumbura a fili. A lokacin rani, yawan zafin jiki na ruwa yana da yawa, don haka bai dace da amfani da porridge ba.
Kariya ga hydroxyethyl cellulose
Tun da surface-treated hydroxyethyl cellulose foda ne ko cellulose m, yana da sauƙi a rike da narkar da shi a cikin ruwa muddin ana kula da abubuwa masu zuwa. da
1. Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da motsawa har sai bayani ya kasance cikakke kuma bayyananne. da
2. Dole ne a hankali a hankali a cikin tanki mai hadewa, kada kai tsaye ƙara yawan adadin hydroxyethyl cellulose ko hydroxyethyl cellulose wanda ya kafa lumps da bukukuwa a cikin tanki mai haɗuwa. 3. Ruwan zafin jiki da darajar PH a cikin ruwa suna da dangantaka mai mahimmanci ga rushewar hydroxyethyl cellulose, don haka dole ne a biya kulawa ta musamman. da
4. Kada ka ƙara wasu abubuwa na alkaline zuwa cakuda kafin a yi dumin foda hydroxyethyl cellulose ta cikin ruwa. Haɓaka ƙimar pH bayan dumama zai taimaka narkewa. da
5. Kamar yadda zai yiwu, ƙara maganin fungal da wuri-wuri. da
6. Lokacin amfani da high-viscosity hydroxyethyl cellulose, maida hankali na uwa barasa kamata ba fiye da 2.5-3%, in ba haka ba uwar barasa zai yi wuya a rike. Maganin hydroxyethyl cellulose da aka yi masa magani gabaɗaya baya da sauƙi don samar da dunƙule ko sassa, kuma ba zai haifar da colloid mai siffar zobe ba bayan ƙara ruwa.
Ana amfani dashi gabaɗaya azaman thickener, wakili mai kariya, m, stabilizer da ƙari don shirye-shiryen emulsion, jelly, maganin shafawa, ruwan shafa fuska, tsabtace ido, suppository da kwamfutar hannu, kuma ana amfani dashi azaman gel na hydrophilic da kwarangwal 1. Shiri na kwarangwal- nau'in shirye-shiryen ci gaba-saki. Hakanan ana iya amfani dashi azaman stabilizer a abinci.
Lokacin aikawa: Fabrairu-02-2023