Gabatarwar Amfani da Hydroxyethyl Cellulose

Halayen Jiki da Sinadaran Hydroxyethyl Cellulose
Sifofin Bayyanar Wannan samfurin yana da fari zuwa rawaya mai haske ko kuma foda mai ƙarfi, ba mai guba ba kuma ba shi da ɗanɗano
Wurin narkewa 288-290 °C (Disamba)
Yawan 0.75 g/mL a 25 °C (lit.)
Narkewa Mai narkewa a cikin ruwa. Ba ya narkewa a cikin sinadarai masu narkewa a cikin ruwa. Yana narkewa a cikin ruwan sanyi da ruwan zafi, kuma gabaɗaya ba ya narkewa a cikin yawancin sinadarai masu narkewa a cikin ruwa. Danko yana canzawa kaɗan a cikin kewayon ƙimar PH 2-12, amma danko yana raguwa fiye da wannan kewayon. Yana da ayyukan kauri, dakatarwa, ɗaurewa, emulsifying, warwatsewa, da kuma kula da danshi. Ana iya shirya mafita a cikin nau'ikan danko daban-daban. Yana da kyakkyawan narkewar gishiri ga electrolytes.

A matsayin sinadarin surfactant mara ionic, hydroxyethyl cellulose yana da waɗannan halaye baya ga kauri, dakatarwa, ɗaurewa, iyo, samar da fim, warwatsewa, riƙe ruwa da kuma samar da colloids masu kariya:
1. HEC yana narkewa a cikin ruwan zafi ko ruwan sanyi, zafi mai yawa ko tafasa ba tare da ruwan sama ba, don haka yana da nau'ikan halaye masu yawa na narkewa da ɗanko, da kuma gelation mara zafi;
2. Ba shi da ionic kuma yana iya rayuwa tare da nau'ikan polymers masu narkewa cikin ruwa, surfactants, da gishiri. Yana da kyakkyawan kauri na colloidal don maganin electrolyte mai yawan taro;
3. Ƙarfin riƙe ruwa ya ninka na methyl cellulose sau biyu, kuma yana da ingantaccen tsarin kwarara.
4. Idan aka kwatanta da methyl cellulose da hydroxypropyl methyl cellulose, ikon warwatsewar HEC shine mafi muni, amma ikon kariya daga colloid shine mafi ƙarfi.

Bukatun fasaha da ƙa'idodin inganci don hydroxyethyl cellulose
Abubuwa: Maye gurbin ma'aunin jijiyar (MS) 2.0-2.5 Danshi (%) ≤5 Ruwa ba ya narkewa (%) ≤0.5 Darajar PH 6.0-8.5 Ƙarfe mai nauyi (ug/g) ≤20 Toka (%) ≤5 Danko (mpa.s) 2% 20 ℃ ruwan magani 5-60000 gubar (%) ≤0.001

Amfani da hydroxyethyl cellulose
【Yi amfani da 1】Ana amfani da shi azaman surfactant, mai kauri na latex, wakili mai kariya daga colloidal, ruwan fashewar mai, polystyrene da polyvinyl chloride dispersant, da sauransu.
[Yi amfani da 2] Ana amfani da shi azaman mai kauri da rage asarar ruwa don ruwan haƙa da ruwan kammalawa, kuma yana da tasirin kauri a bayyane a cikin ruwan haƙa mai. Hakanan ana iya amfani da shi azaman mai rage asarar ruwa don simintin rijiyar mai. Ana iya haɗa shi da ions na ƙarfe masu yawa don samar da gel.
[Amfani da 3] Ana amfani da wannan samfurin a matsayin mai wargaza polymeric don ruwan gel na ruwa, polystyrene da polyvinyl chloride a cikin haƙar ma'adinai. Hakanan ana iya amfani da shi azaman mai kauri emulsion a masana'antar fenti, hygrostat a masana'antar lantarki, maganin hana kumburin siminti da kuma wakilin riƙe danshi a masana'antar gini. Gilashin gilashin masana'antar yumbu da manne man goge baki. Hakanan ana amfani da shi sosai a cikin bugawa da rini, yadi, yin takarda, magani, tsafta, abinci, sigari, magungunan kashe kwari da magungunan kashe gobara.
[Yi amfani da 4] Ana amfani da shi azaman surfactant, wakili mai kariya daga colloidal, mai daidaita emulsification don vinyl chloride, vinyl acetate da sauran emulsions, da kuma mai daidaita viscosifier, mai rarrabawa, da mai daidaita watsawa don latex. Ana amfani da shi sosai a cikin shafa, zare, rini, yin takarda, kayan kwalliya, magani, magungunan kashe kwari, da sauransu. Hakanan yana da amfani da yawa a masana'antar binciken mai da injina.
【Yi amfani da 5】Hydroxyethyl cellulose yana da ayyukan aikin saman, kauri, dakatarwa, ɗaurewa, emulsifying, samar da fim, warwatsewa, riƙe ruwa da kuma samar da kariya a cikin shirye-shiryen magunguna masu ƙarfi da ruwa.

Amfani da hydroxyethyl cellulose
Ana amfani da shi a cikin rufin gine-gine, kayan kwalliya, man goge baki, abubuwan surfactants, masu kauri latex, masu kariya daga colloidal, ruwan fashewar mai, masu rarraba polystyrene da polyvinyl chloride, da sauransu.

Takardar Bayanan Tsaron Kayan Hydroxyethyl Cellulose (MSDS)
1. Samfurin yana da haɗarin fashewar ƙura. Lokacin da ake sarrafa adadi mai yawa ko kuma a cikin adadi mai yawa, a yi hankali don guje wa shigar ƙura da toshewa a cikin iska, kuma a guji zafi, tartsatsin wuta, harshen wuta da wutar lantarki mai tsauri. 2. A guji shiga da taɓa idanu da foda methylcellulose, kuma a sanya abin rufe fuska da gilashin kariya yayin aiki. 3. Samfurin yana da santsi sosai idan ya jike, kuma ya kamata a tsaftace foda methylcellulose da aka zubar akan lokaci kuma a yi maganin hana zamewa.

Halayen ajiya da jigilar hydroxyethyl cellulose
Marufi: jakunkuna masu layi biyu, jakar takarda mai haɗakar waje, jakar fim ɗin polyethylene na ciki, nauyin net 20kg ko 25kg kowace jaka.
Ajiya da jigilar kaya: A adana a cikin gida a wuri mai iska da bushewa, kuma a kula da danshi. Ruwan sama da hasken rana suna kare shi yayin jigilar kaya.

Hanyar shiri na hydroxyethyl cellulose
Hanya ta 1: A jiƙa audugar danye ko kuma ɓangaren litattafan da aka tace a cikin ruwan leda mai kashi 30%, a cire shi bayan rabin sa'a, sannan a danna. A danna har sai rabon ruwan alkali ya kai 1:2.8, sannan a matsa zuwa na'urar niƙawa don niƙawa. A saka zare na alkali da aka niƙa a cikin kettle ɗin amsawa. A rufe kuma a kwashe shi, a cika shi da nitrogen. Bayan an maye gurbin iskar da ke cikin kettle da nitrogen, a danna cikin ruwan ethylene oxide da aka riga aka sanyaya. A mayar da martani kafin a sanyaya a 25°C na tsawon awanni 2 don samun ɗanyen hydroxyethyl cellulose. A wanke ɗanyen samfurin da barasa kuma a daidaita ƙimar pH zuwa 4-6 ta hanyar ƙara acetic acid. A ƙara glyoxal don haɗa kai da tsufa, a wanke da ruwa da sauri, sannan a ƙarshe a yi amfani da centrifuge, a bushe, a niƙa don samun ƙarancin gishirin hydroxyethyl cellulose.
Hanya ta 2: Alkali cellulose wani abu ne na halitta, kowanne zoben tushe na zare yana ɗauke da ƙungiyoyi uku na hydroxyl, ƙungiyar hydroxyl mafi aiki tana amsawa don samar da hydroxyethyl cellulose. Jiƙa linters na auduga danye ko ɓangaren litattafan da aka tace a cikin soda mai kauri 30%, cire shi sannan a danna bayan rabin sa'a. Matse har sai rabon ruwan alkaline ya kai 1:2.8, sannan a niƙa. Sanya cellulose na alkali da aka niƙa a cikin kettle na amsawa, a rufe shi, a tsaftace shi, a cika shi da nitrogen, sannan a maimaita cikar injin tsabtace iska da nitrogen don maye gurbin iskar da ke cikin kettle gaba ɗaya. A danna cikin ruwan ethylene oxide da aka riga aka sanyaya, a sanya ruwan sanyaya a cikin jaket ɗin kettle na amsawa, sannan a sarrafa amsawar a kusan 25°C na tsawon awanni 2 don samun hydroxyethyl cellulose mai ɗanɗano. Ana wanke samfurin da barasa, a narkar da shi zuwa pH 4-6 ta hanyar ƙara acetic acid, sannan a haɗa shi da glyoxal don tsufa. Sannan a wanke shi da ruwa, a bushe shi da centrifugation, a busar da shi kuma a niƙa don samun hydroxyethyl cellulose. Amfani da kayan da aka yi da ɗanyen abu (kg/t) auduga ko ɗanɗanon da ba a sarrafa ba 730-780 soda mai kaustic ruwa (30%) 2400 ethylene oxide 900 barasa (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose foda ne fari ko rawaya mara ƙamshi, mara ɗanɗano kuma mai sauƙin gudana, yana narkewa a cikin ruwan sanyi da ruwan zafi, gabaɗaya ba ya narkewa a cikin yawancin abubuwan narkewa na halitta.
Hydroxyethyl cellulose (HEC) fari ne ko rawaya mai haske, mara ƙamshi, mara guba, mai kama da fibrous ko foda mai ƙarfi, wanda ake shirya shi ta hanyar amsawar etherification na alkaline cellulose da ethylene oxide (ko chlorohydrin). Ethers na cellulose masu narkewa marasa ionic. Saboda HEC yana da kyawawan halaye na kauri, dakatarwa, warwatsewa, emulsifying, haɗawa, ƙirƙirar fim, kare danshi da kuma samar da colloid mai kariya, an yi amfani da shi sosai a binciken mai, shafi, gini, magani, abinci, yadi, takarda da polymer Polymerization da sauran fannoni. Ragewar sifewa 40 ≥ 99%; zafin laushi: 135-140°C; yawan gani: 0.35-0.61g/ml; zafin narkewa: 205-210°C; saurin ƙonewa a hankali; zafin daidaitawa: 23°C; 50% 6% a rh, 29% a 84% rh.

Yadda ake amfani da hydroxyethyl cellulose
an ƙara kai tsaye a lokacin samarwa
1. Zuba ruwa mai tsafta a cikin babban bokiti mai kayan haɗawa mai ƙarfi.
Sinadarin Hydroxyethyl cellulose
2. A fara juyawa akai-akai a ƙaramin gudu sannan a tace hydroxyethyl cellulose a hankali a cikin ruwan daidai gwargwado.
3. Ci gaba da juyawa har sai dukkan barbashi sun jike.
4. Sannan a ƙara sinadarin kariya daga walƙiya, ƙarin abubuwa kamar su launuka, abubuwan da ke taimakawa wajen wargazawa, ruwan ammonia.
5. A juya har sai dukkan sinadarin hydroxyethyl cellulose ya narke gaba daya (danko na maganin yana ƙaruwa sosai) kafin a ƙara wasu sinadarai a cikin dabarar, sannan a niƙa har sai samfurin ya ƙare.
An haɗa shi da ruwan inabi na uwa
Wannan hanyar ita ce a fara shirya ruwan inabi mai yawan amfani da shi, sannan a ƙara shi a fentin latex. Amfanin wannan hanyar shine yana da sassauci sosai kuma ana iya ƙara shi kai tsaye zuwa fentin da aka gama, amma ya kamata a adana shi yadda ya kamata. Matakan sun yi kama da Matakai na 1-4 a Hanyar 1, bambancin shine babu buƙatar juyawa har sai ya narke gaba ɗaya ya zama ruwan da ba ya da kyau.
Porridge don ilimin halittar jiki
Tunda sinadaran da ke cikin sinadarai masu narkewar sinadarai ba su da kyau ga sinadarin hydroxyethyl cellulose, ana iya amfani da waɗannan sinadaran da ke cikin sinadarai don shirya sinadarin. Abubuwan da ake amfani da su wajen tace sinadarai masu narkewar ...

Gargaɗi game da hydroxyethyl cellulose
Tunda sinadarin hydroxyethyl cellulose da aka yi wa magani a samansa foda ne ko kuma cellulose mai ƙarfi, yana da sauƙin sarrafawa da narke shi a cikin ruwa matuƙar an kula da waɗannan abubuwan.
1. Kafin da kuma bayan ƙara hydroxyethyl cellulose, dole ne a ci gaba da juyawa har sai ruwan ya bayyana kuma ya bayyana.
2. Dole ne a tace a hankali a cikin tankin hadawa, kada a saka adadi mai yawa na hydroxyethyl cellulose ko hydroxyethyl cellulose kai tsaye wanda ya samar da dunkule da ƙwallo a cikin tankin hadawa. 3. Zafin ruwa da ƙimar PH a cikin ruwa suna da alaƙa a bayyane da narkar da hydroxyethyl cellulose, don haka dole ne a ba da kulawa ta musamman.
4. Kada a ƙara wasu sinadarai na alkaline a cikin cakuda kafin a dumama foda hydroxyethyl cellulose ta cikin ruwa. Ƙara darajar pH bayan dumama zai taimaka wajen narkewa.
5. Gwada gwargwadon iko, ƙara maganin kashe fungal da wuri-wuri.
6. Lokacin amfani da sinadarin hydroxyethyl cellulose mai yawan ɗanɗano, yawan ruwan da ke cikin uwar giya bai kamata ya wuce kashi 2.5-3% ba, in ba haka ba ruwan da ke cikin uwar giya zai yi wahalar sarrafawa. hydroxyethyl cellulose da aka yi wa magani bayan an yi masa magani ba shi da sauƙin samar da dunƙule ko dunƙule, kuma ba zai samar da dunƙule masu siffar ƙwallo marasa narkewa ba bayan an ƙara ruwa.
Ana amfani da shi gabaɗaya azaman mai kauri, wakili mai kariya, manne, mai daidaita jiki da ƙari don shirya emulsion, jelly, man shafawa, man shafawa, mai tsaftace ido, suppository da kwamfutar hannu, kuma ana amfani da shi azaman gel mai hana ruwa da kayan kwarangwal 1. Shirya shirye-shiryen da suka ci gaba da sakin kwarangwal. Hakanan ana iya amfani da shi azaman mai daidaita abinci.