Hydroxyethyl Cellulose Qalabka Jirka iyo Kiimikada
Astaamaha muuqaalka Alaabtani waa caddaan ilaa iftiin jaale ah fibroes ama budo leh, aan sun ahayn oo aan dhadhamin
Barta dhalaalka 288-290 °C (dec.)
Cufnaanta 0.75 g/ml at 25 °C (iftiin)
Solubility Ku milmay biyaha. Aan lagu milmi karin dareerayaasha dabiiciga ah ee caadiga ah. Waxay ku milmi kartaa biyo qabow iyo biyo kulul, iyo guud ahaan aan lagu milmi karin inta badan dareerayaasha organic. Viscosity-ku wax yar ayuu isu beddelaa inta u dhaxaysa qiimaha PH 2-12, laakiin mawgu wuu yaraadaa wixii ka baxsan xadkan. Waxay leedahay hawlaha dhumucda, laalidda, xidhidhiyaha, emulsifying, fidinta, iyo ilaalinta qoyaanka. Xalka noocyada viscosity ee kala duwan ayaa la diyaarin karaa. Waxay ku milmayn milixdu si gaar ah u wanaagsan tahay electrolytes.
Sida surfactant-aan-ionic ah, hydroxyethyl cellulose waxay leedahay sifooyinka soo socda marka lagu daro dhumuc, laalitaan, xidhidhiyaha, sabaynta, filim samaynta, kala firdhinta, biyo-haysinta iyo bixinta kolloidyada ilaalinta:
1. HEC waxay ku milmi kartaa biyo kulul ama qabow, heerkul sare ama karkaraya iyada oo aan roob lahayn, si ay u leedahay noocyo kala duwan oo milmayn iyo sifooyinka viscosity, iyo gelation non-thermal;
2. Waa non-ionic oo waxay la noolaan kartaa tiro balaadhan oo ah polymers kale oo biyo-milmi kara, surfactants, iyo cusbada. Waa dhumuc weyn oo kolloidal ah oo loogu talagalay xalalka korantada ee xoogga leh;
3. Awoodda haynta biyuhu waxay laban laab ka badan tahay tan methyl cellulose, waxayna leedahay nidaaminta qulqulka wanaagsan.
4. Marka la barbar dhigo methyl cellulose ee la aqoonsan yahay iyo hydroxypropyl methyl cellulose, awoodda kala firdhisan ee HEC waa tan ugu xun, laakiin awoodda kolloid ilaalinta ayaa ah kan ugu xooggan.
Shuruudaha farsamada iyo heerarka tayada ee hydroxyethyl cellulose
Walxaha: Tusaha bedelka molarka (MS) 2.0-2.5 qoyaan (%) ≤5 Biyo aan milmi karin (%) 2% 20 ℃ xal aqueous 5-60000 ledh (%) ≤0.001
Isticmaalka hydroxyethyl cellulose
【Isticmaal 1】 Loo isticmaalo sida surfactant, dhumucda cinjirka, wakiilka ilaalinta kolloidal, dareere dilaaca sahaminta saliidda, polystyrene iyo polyvinyl chloride dispersant, iwm.
[Isticmaal 2] Waxa loo istcimaalaa dhumucdiye iyo dareeraha luminta dareeraha qodista biyaha ku salaysan iyo dareerayaasha dhamaystirka, waxayna leedahay saamayn dhumuc muuqata leh dareerayaasha qodista brine. Waxa kale oo loo isticmaali karaa dhimis luminta dareeraha sibidhka ceelka saliidda. Waxa lagu xidhi karaa ion bir polyvalent si loo sameeyo jel.
[Isticmaal 3] Alaabtan waxa loo isticmaalaa sida kala firdhiso polymeric ah oo loogu talagalay dareeraha jel-ka-jajabinta ee biyaha, polystyrene iyo chloride polyvinyl ee qodista jabka. Waxa kale oo loo isticmaali karaa sidii dhumucda emulsion ee warshadaha rinjiga, hygrostat ee warshadaha elektiroonigga ah, xinjirowga lidka ku ah sibidhka iyo wakiilka qoyaanka ilaalinta ee warshadaha dhismaha. Dhaldhalaalka warshadaha dhoobada iyo dawada cadayga. Waxa kale oo si weyn loogu isticmaalaa daabacaadda iyo midabaynta, dunta, waraaqaha samaynta, daawada, nadaafadda, cuntada, sigaarka, sunta cayayaanka iyo walxaha dab-damiska.
[Isticmaal 4] Waxa loo isticmaalaa sidii surfactant, wakiilka ilaalinta kolloidal, emulsification stabilizer for vinyl chloride, vinyl acetate iyo emulsions kale, iyo sidoo kale viscosifier, dispersant, iyo kala firdhiso xajinta ee cinjirka. Si weyn loogu isticmaalo dahaarka, fiilooyinka, midabaynta, waraaqaha samaynta, waxyaalaha la isku qurxiyo, daawada, sunta cayayaanka, iwm. Waxa kale oo ay leedahay adeegsiyo badan oo sahaminta saliidda iyo warshadaha mishiinada.
【Isticmaal 5】Hydroxyethyl cellulose waxa uu leeyahay hawlaha hawlaha dusha, dhumucdiisuna, laalid, xidhitaan, emulsifying, film samaynta, kala firdhiyey, haynta biyaha iyo bixinta ilaalinta in dawooyinka adag iyo diyaarinta dareere ah.
Codsiyada hydroxyethyl cellulose
Loo isticmaalo daaha-dhismaha, waxyaalaha la isku qurxiyo, daawada cadayga, surfactants, dhumucyada cinjirka, wakiilada difaaca kolloidal, dareeraha jajabka saliidda, polystyrene iyo polyvinyl chloride dispersants, iwm.
Xaashida Xogta Badbaadada Qalabka Hydroxyethyl Cellulose (MSDS)
1. Alaabta waxay leedahay khatarta qarax boodhka. Markaad la tacaalayso xaddi badan ama bad, ka taxdar inaad iska ilaaliso dhigista boodhka iyo hakinta hawada, kana ilaali kulaylka, dhimbilaha, ololka iyo korontada taagan. 2. Ka fogow budada methylcellulose inay gasho oo ay indhaha la taabto, xidho waji-xidhka shaandhada iyo muraayadaha badbaadada inta lagu jiro hawlgalka. 3. Badeecadu aad bay u simbiriirixanaysaa marka ay qoyan tahay, budada methylcellulose ee daatayna waa in la nadiifiyaa wakhtiga iyo daaweynta ka hortagga silbashada waa in la sameeyaa.
Kaydinta iyo sifooyinka gaadiidka ee hydroxyethyl cellulose
Xirmooyinka: bacaha laba-lakabka ah, boorsada warqadda isku dhafan ee dibadda ah, bacda filimka polyetylenka ee gudaha, miisaanka saafiga ah 20kg ama 25kg kiishkaba.
Kaydinta iyo gaadiidka: Ku kaydi meel hawo leh oo qallalan gudaha gudaha, una fiirso qoyaanka. Ilaalinta roobka iyo qorraxda inta lagu jiro gaadiidka.
Habka diyaarinta ee hydroxyethyl cellulose
Habka 1: Ku qooye suufka ceeriin ama saxarka la safeeyey 30% lye, soo saar nus saac ka dib, oo riix. Riix ilaa saamiga ka kooban alkali-biyaha uu gaaro 1:2.8, oo u gudub aaladda burburinta. Geli fiberalka alkali ee la jajabiyey kiliyaha falcelinta. La daboolay oo la daadgureeyay, oo ay ka buuxaan nitrogen. Ka dib markaad hawada kiliyaha ku badasho nitrogen, ku cadaadi dareeraha ethylene oxide ee hore loo qaboojiyey. Ka falcelinta hoos qaboojinta 25°C ilaa 2 saacadood si aad u hesho cellulose hydroxyethyl cayriin. Alaabta ceeriin ku maydh alkohol oo ku hagaaji qiimaha pH ilaa 4-6 adiga oo ku daraya acetic acid. Ku dar glioxal isku-xidhka iyo gabowga, si degdeg ah ugu dhaq biyo, oo ugu dambeyntii centrifuge, engeji, oo shiid si aad u hesho hydroxyethyl cellulose milix yar.
Habka 2: Alkali cellulose waa polymer-dabiici ah, giraan kasta oo fiber ah ayaa ka kooban saddex kooxood oo hydroxyl ah, kooxda ugu firfircoon ee hydroxyl waxay falcelinaysaa si ay u sameeyaan hydroxyethyl cellulose. Ku qooyi suufka ceeriin ama saxarka la safeeyey ee 30% soodhaha dareeraha ah, ka saar oo riix nus saac ka dib. Tuuji ilaa saamiga biyaha alkalineku gaadho 1: 2.8, ka dibna burburi. Geli cellulose-ka miiray ee kiliyaha falcelinta, xidh, faakiydh, ka buuxi nitrogen, oo ku celi faaruqinta iyo buuxinta nitrogen si aad si buuxda ugu beddesho hawada kiliyaha. Riix dareeraha ethylene oxide ee horay loo qaboojiyay, ku rid biyaha qaboojinta jaakada kiliga falcelinta, oo xakamee falcelinta ilaa 25°C ilaa 2 saacadood si aad u hesho cellulose hydroxyethyl ceeriin. Alaabada cayriin waxaa lagu dhaqaa aalkolo, la dhexdilaa pH 4-6 iyadoo lagu darayo acetic acid, oo lala xiriiriyo glioxal ee gabowga. Kadibna waxaa lagu dhaqaa biyo, fuuqbaxa by centrifugation, engejin iyo miiray si aad u hesho hydroxyethyl cellulose. Isticmaalka alaabta ceeriin (kg/t) suufka suufka ah ama saxarka hoose 730-780 dareeraha caustic soda (30%) 2400 ethylene oxide 900 aalkolo (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose waa caddaan ama huruud aan ur lahayn, aan dhadhamin oo budo si fudud u qulqulin, ku milma biyo qabow iyo biyo kulul, guud ahaan aan milmin inta badan dareerayaasha dabiiciga ah.
Hydroxyethyl cellulose (HEC) waa huruud cad ama khafiif ah, aan ur lahayn, aan sun ahayn fayraska ama budada adag, kaas oo lagu diyaariyo falcelinta etherification ee cellulose alkaline iyo ethylene oxide (ama chlorohydrin). Nonionic ethers cellulose milmay. Sababtoo ah HEC waxay leedahay sifooyin wanaagsan oo dhumucdiisuna waxay tahay, hakin, kala firdhiyo, emulsifying, bonding, film-samaynta, ilaalinta qoyaanka iyo bixinta kolloid ilaalinta, waxa si weyn loogu isticmaalay sahaminta saliidda, dahaarka, dhismaha, daawada, cuntada, dunta, waraaqaha iyo polymer Polymerization. iyo goobo kale. 40 heerka shaandhaynta mesh ≥ 99%; heerkulka jilicsanaanta: 135-140 ° C; cufnaanta muuqata: 0.35-0.61g/ml; heerkulka burburka: 205-210 ° C; xawaaraha gubanaya oo gaabis ah; heerkulka dheellitirka: 23 ° C; 50% 6% rh, 29% at 84% rh.
Sida loo isticmaalo hydroxyethyl cellulose
si toos ah loogu daray waqtiga wax soo saarka
1. Ku dar biyo nadiif ah baaldi weyn oo ku qalabaysan qasiyaha xiirid sare. ah
Hydroxyethyl cellulose
2. Bilow inaad si joogto ah u walaaq xawaare hoose oo si tartiib ah u kala miir hydroxyethyl cellulose si siman xalka. ah
3. Sii wad inaad walaaqdo ilaa dhammaan qaybaha ay qooyaan. ah
4. Ka dibna ku dar wakiilka ilaalinta hillaaca, waxyaabaha aasaasiga ah sida midabada, qalabka kala firdhisan, biyaha ammonia. ah
5. Walaaq ilaa dhammaan cellulose hydroxyethyl ay si buuxda u milmaan (viskosity ee xalku si aad ah ayuu u kordhiyaa) ka hor intaadan ku darin qaybaha kale ee caanaha, oo shiid ilaa alaabta la dhammeeyo.
Ku qalabaysan khamriga hooyada
Habkani waa in marka hore la diyaariyo khamriga hooyada oo leh feejignaan sare, ka dibna lagu daro rinjiga cinjirka. Faa'iidada habkani waa in uu leeyahay dabacsanaan weyn oo si toos ah loogu dari karo rinjiga la dhammeeyey, laakiin waa in si habboon loo kaydiyaa. Tallaabooyinka waxay la mid yihiin Tallaabooyinka 1-4 ee Habka 1, farqiga u dhexeeyaa waa in aan loo baahnayn in la kiciyo ilaa ay si buuxda u milmayso xal viscous ah.
Boorash loogu talagalay phenology
Maadaama dareerayaasha organic ay yihiin dareerayaal liidata oo loogu talagalay hydroxyethyl cellulose, dareerayaashan organic waxaa loo isticmaali karaa in lagu diyaariyo boorashka. Walxaha dabiiciga ah ee inta badan la isticmaalo waa dareerayaasha dabiiciga ah sida ethylene glycol, propylene glycol iyo filim hore (sida ethylene glycol ama diethylene glycol butyl acetate) ee naqshadaynta rinjiga. Biyaha barafka sidoo kale waa dareere liidata, sidaas darteed biyaha barafka waxaa badanaa la isticmaalaa dareerayaasha organic si loogu diyaariyo boorash. Hydroxyethyl cellulose ee boorashka si toos ah ayaa loogu dari karaa rinjiga, iyo hydroxyethyl cellulose waa la kala qaybiyay oo bararay boorashka. Marka lagu daro rinjiga, isla markiiba wuu milaan oo wuxuu u dhaqmaa sidii dhumuc. Ka dib markaad ku darto, sii walaaq ilaa hydroxyethyl cellulose si buuxda u milmay oo lebbiska ah. Guud ahaan, boorashka waxaa la sameeyaa iyadoo lagu qaso lix qaybood oo dareere organic ah ama biyaha barafka iyo qayb ka mid ah hydroxyethyl cellulose. Qiyaastii 6-30 daqiiqo ka dib, hydroxyethyl cellulose waa la nadiifin doonaa oo si cad u barari doonaa. Xilliga xagaaga, heerkulka biyuhu guud ahaan aad buu u sarreeyaa, markaa kuma habboona in la isticmaalo boorash.
Ka taxadarida hydroxyethyl cellulose
Maaddaama dusha lagu daaweeyay hydroxyethyl cellulose ay tahay budo ama cellulose adag, way fududahay in la xakameeyo oo lagu milmo biyaha ilaa inta waxyaabaha soo socda la siinayo. ah
1. Kahor iyo ka dib marka lagu daro hydroxyethyl cellulose, waa in si joogto ah loo walaaqaa ilaa xalku si buuxda u hufan yahay oo cad yahay. ah
2. Waa in si tartiib ah loogu shaandheeyo haanta isku dhafka ah, si toos ah ha ugu darin xaddi badan oo ah hydroxyethyl cellulose ama hydroxyethyl cellulose oo samaystay kuusyo iyo kubbado haanta isku dhafka ah. 3. Heerkulka biyaha iyo qiimaha PH ee biyaha ayaa xiriir muuqda la leh kala dirida cellulose hydroxyethyl, markaa waa in fiiro gaar ah la bixiyaa. ah
4. Ha ku darin qaar ka mid ah walxaha alkaline isku darka ka hor inta aan lagu diirin budada hydroxyethyl cellulose biyaha dhexdeeda. Kor u qaadista qiimaha pH ka dib kululaynta waxay kaa caawin doontaa milanka. ah
5. Inta suurtogalka ah, ku dar wakiilka anti-fungal sida ugu dhakhsaha badan ee suurtogalka ah. ah
6. Marka la isticmaalayo hydroxyethyl cellulose viscosity-sare, fiirsashada khamriga hooyadu waa inuusan ka badnaan 2.5-3%, haddii kale khamriga hooyadu way adkaan doontaa in la xakameeyo. Unugyada hydroxyethyl cellulose ee la daaweeyay ka dib guud ahaan ma fududa in la sameeyo buro ama goobo, mana samayn doono kolloysyada wareegsan ee aan milmi karin ka dib marka lagu daro biyo.
Waxaa guud ahaan loo isticmaalaa sidii dhumuc ahaan, wakiilka ilaalinta, koollada, xasiliyaha iyo wax lagu daro diyaarinta emulsion, jelly, boomaato, lotion, nadiifiyaha indhaha, suppository iyo kiniinka, iyo sidoo kale loo isticmaalo sida jel hydrophilic iyo qalab qalfoofka 1. Diyaarinta qalfoofka- nooca diyaarinta sii-daynta joogtada ah. Waxa kale oo loo isticmaali karaa xasiliye ahaan cuntada.
Waqtiga boostada: Febraayo-02-2023