Sifooyinka Jirka iyo Kiimikada ee Hydroxyethyl Cellulose
Astaamaha muuqaalka Badeecadani waa cadaan ilaa huruud khafiif ah oo fiiber leh ama budo adag, aan sun ahayn oo aan dhadhan lahayn
Barta dhalaalaysa 288-290 °C (diseembar)
Cufnaanta 0.75 g/mL heerkul ah 25 °C (iftiin)
Milmida Milmida biyaha. Lama milmi karo dareeraha caadiga ah ee dabiiciga ah. Waa milmi karaa biyaha qabow iyo biyaha kulul, guud ahaanna laguma milmi karo inta badan dareeraha dabiiciga ah. Dheef-shiidku wuxuu si yar isu beddelaa inta u dhaxaysa qiimaha PH 2-12, laakiin dhef-shiidku wuu ka yar yahay xadkan. Waxay leedahay shaqooyin dhumuc, joojin, xidhitaan, emulsion, kala firdhinta, iyo ilaalinta qoyaanka. Xalalka ku jira heerarka dhef-shiidka kala duwan ayaa la diyaarin karaa. Waxay leedahay milmi aad u wanaagsan oo milix ah oo loogu talagalay elektrolytyada.
Maadaama ay tahay surfactant aan ionic ahayn, hydroxyethyl cellulose waxay leedahay sifooyinka soo socda marka lagu daro dhumucda, suuxinta, xidhitaanka, sabaynta, sameynta filimada, kala firdhinta, ilaalinta biyaha iyo bixinta kolloid ilaalin ah:
1. HEC waxay ku milmi kartaa biyaha kulul ama biyaha qabow, heerkul sare ama karkaraya iyada oo aan roob lahayn, si ay u yeelato astaamo badan oo milmi kara iyo dheellitirnaan, iyo jelitaanka aan kuleylka ahayn;
2. Ma aha mid ionic ah waxayna la noolaan kartaa noocyo badan oo polymers kale oo biyaha ku milma, surfactants, iyo milix. Waa dhumuc colloidal aad u fiican oo loogu talagalay xalalka electrolyte-ka ee xoogga badan;
3. Awoodda haysashada biyaha ayaa labanlaab ka badan tan methyl cellulose, waxayna leedahay nidaamin socod oo wanaagsan.
4. Marka la barbardhigo methyl cellulose iyo hydroxypropyl methyl cellulose, awoodda kala firdhinta ee HEC ayaa ah tan ugu xun, laakiin awoodda ilaalinta colloid ayaa ah tan ugu xooggan.
Shuruudaha farsamada iyo heerarka tayada ee hydroxyethyl cellulose
Shayada: Beddelka gawska ee tusmada (MS) 2.0-2.5 Qoyaan (%) ≤5 Biyuhu ma milmaan (%) ≤0.5 Qiimaha PH 6.0-8.5 Bir culus (ug/g) ≤20 Dambas (%) ≤5 Viscosity (mpa.s) 2% 20 ℃ xal biyo ah 5-60000 rasaas (%) ≤0.001
Isticmaalka hydroxyethyl cellulose
【Isticmaal 1】Waxaa loo isticmaalaa sida surfactant, dhumuc-dhejin latex ah, wakiil ilaalin kolloidal ah, dareeraha jabka sahaminta saliidda, kala-baxa polystyrene iyo polyvinyl chloride, iwm.
[Isticmaal 2] Waxaa loo isticmaalaa sidii dhumuc-dhejin iyo yarayn dareere ah oo loogu talagalay dareerayaasha qodista biyaha ku salaysan iyo dareerayaasha dhammaystirka, waxayna leedahay saameyn dhumuc-dhejin ah oo muuqata oo ku jirta dareerayaasha qodista milixda. Waxa kale oo loo isticmaali karaa yaraynta khasaaraha dareeraha ee sibidhka ceelka saliidda. Waxaa lagu xidhi karaa ayoonnada birta polyvalent si loo sameeyo jel.
[Isticmaal 3] Badeecadan waxaa loo isticmaalaa sidii kala firdhiye polymeric ah oo loogu talagalay dareeraha jelka ee biyaha ku salaysan, polystyrene iyo polyvinyl chloride ee macdanta jajabka. Waxa kale oo loo isticmaali karaa sidii dhumuc-saare emulsion ah warshadaha rinjiga, hygrostat warshadaha elektaroonigga ah, xinjirowga lidka ku ah sibidhka iyo wakiilka haynta qoyaanka ee warshadaha dhismaha. Muraayadaha warshadaha dhoobada iyo qalabka lagu xidho cadayga. Waxa kale oo si weyn loogu isticmaalaa daabacaadda iyo rinjiyeynta, dharka, sameynta waraaqaha, daawada, nadaafadda, cuntada, sigaarka, sunta cayayaanka iyo wakiilada dab-damiska.
[Isticmaal 4] Waxaa loo isticmaalaa sida surfactant, wakiilka ilaalinta kolloidal, xasiliyaha emulsification ee vinyl chloride, vinyl acetate iyo emulsions kale, iyo sidoo kale viscosifier, kala firdhiye, iyo xasiliyaha kala firdhinta ee latex. Si ballaaran ayaa loogu isticmaalaa dahaarka, fiilooyinka, rinjiyeynta, sameynta waraaqaha, qurxinta, daawada, sunta cayayaanka, iwm. Waxa kale oo ay leedahay isticmaal badan oo ku saabsan sahaminta saliidda iyo warshadaha mashiinnada.
【Isticmaal 5】Hydroxyethyl cellulose waxay leedahay shaqooyinka dhaqdhaqaaqa dusha sare, dhumucda, sugidda, xidhitaanka, emulsifying, sameynta filimka, kala firdhinta, haynta biyaha iyo bixinta ilaalinta diyaarinta adag iyo dareeraha daawada.
Isticmaalka hydroxyethyl cellulose
Waxaa loo isticmaalaa dahaarka dhismaha, qurxinta, daawada cadayga, surfactants, dhumuclayaasha latex, wakiilada ilaalinta kolloidal, dareeraha jabka saliidda, kala firdhiyaha polystyrene iyo polyvinyl chloride, iwm.
Xaashida Xogta Badbaadada Maaddada Hydroxyethyl Cellulose (MSDS)
1. Badeecadu waxay leedahay khatar ah qarax boodh. Markaad wax badan qabanayso ama aad si badan u isticmaaleyso, ka taxaddar inaad ka fogaato in boorku hawada ku dhego oo uu ku dhego, oo ka fogow kulaylka, dhimbilaha, ololka iyo korontada taagan. 2. Ka fogow budada methylcellulose inay gasho oo ay taabato indhaha, oo xidho maaskaro shaandheeye iyo muraayadaha badbaadada inta lagu jiro hawlgalka. 3. Badeecadu aad bay u simbiriirixan tahay marka ay qoyan tahay, budada methylcellulose ee daadatayna waa in la nadiifiyaa waqtigeeda oo la sameeyaa daawaynta ka hortagga simbiriirixanka.
Astaamaha kaydinta iyo gaadiidka ee hydroxyethyl cellulose
Baakadaha: bacaha laba lakab leh, bacda warqadda isku-dhafka ah ee dibadda, bacda gudaha ee filimka polyethylene, miisaanka saafiga ah 20kg ama 25kg bacdiiba.
Kaydinta iyo rarista: Ku kaydi meel hawo leh oo qalalan gudaha, oo fiiro gaar ah u yeelo qoyaanka. Roobka iyo ilaalinta qorraxda inta lagu jiro rarista.
Habka diyaarinta ee hydroxyethyl cellulose
Habka 1aad: Ku qooy suufka cayriin ama saxarka la safeeyey 30% lye, ka saar nus saac ka dib, oo riix. Riix ilaa saamiga biyaha alkali-ku uu gaaro 1:2.8, oo u gudub qalab burburin ah si loo burburiyo. Ku rid faybarka alkali ee la jajabiyey digsiga falcelinta. Waa la shaabadeeyey oo laga saaray, waxaana lagu buuxiyey nitrogen. Ka dib markaad hawada ku beddesho digsiga nitrogen, ku cadaadi dareeraha ethylene oxide ee la qaboojiyey. Ka falceli qaboojinta 25°C muddo 2 saacadood ah si aad u hesho cellulose hydroxyethyl cayriin ah. Ku dhaq badeecada cayriin aalkolo oo qiimaha pH u hagaaji 4-6 adigoo ku daraya acetic acid. Ku dar glyoxal si aad isugu xirto oo aad u gaboowdo, si dhakhso ah ugu dhaq biyo, ugu dambayntiina ku centrifuge, qalaji, oo shiid si aad u hesho cellulose hydroxyethyl oo milix yar leh.
Habka 2aad: Alkali cellulose waa polymer dabiici ah, giraan kasta oo saldhig faybar ah wuxuu ka kooban yahay saddex kooxood oo hydroxyl ah, kooxda hydroxyl ee ugu firfircoon waxay ka falcelisaa sameynta hydroxyethyl cellulose. Ku qooy suufka cayriin ama saxarka la safeeyey 30% soodhaha caustic dareere ah, ka saar oo riix nus saac ka dib. Tuuji ilaa saamiga biyaha alkaline-ka ah uu gaaro 1:2.8, ka dibna burburi. Celose-ka alkali ee la jajabiyey geli digsiga falgalka, xidh, faakiyuum ku shub, ku celi nitrogen, oo ku celi faakiyuumaynta iyo buuxinta nitrogen si aad gebi ahaanba u beddesho hawada ku jirta digsiga. Ku riix dareeraha ethylene oxide ee hore loo qaboojiyey, geli biyaha qaboojinta jaakadda digsiga falgalka, oo xakamayso falcelinta qiyaastii 25°C muddo 2 saacadood ah si loo helo hydroxyethyl cellulose cayriin ah. Badeecada cayriin waxaa lagu dhaqaa aalkolo, waxaa lagu dhexdhexaadiyaa pH 4-6 iyadoo lagu darayo acetic acid, waxaana lagu xiraa glyoxal si loo gabeeyo. Kadib waxaa lagu dhaqaa biyo, waxaa lagu qalajiyaa centrifugation, waa la qalajiyaa oo la shiidaa si loo helo hydroxyethyl cellulose. Isticmaalka walxaha ceeriin (kg/t) suufka ama saxarka yar 730-780 soodhaha caustic-ga dareeraha ah (30%) 2400 ethylene oxide 900 aalkolo (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose waa budo cad ama jaalle ah oo aan ur lahayn, dhadhan lahayn oo si fudud u socota, oo ku milmi karta biyaha qabow iyo biyaha kulul, guud ahaanna aan ku milmi karin inta badan dareerayaasha dabiiciga ah.
Hydroxyethyl cellulose (HEC) waa huruud cad ama khafiif ah, aan ur lahayn, aan sun ahayn oo adag oo ah fibrous ama budo, kaas oo lagu diyaariyo falgalka etherification ee cellulose alkaline iyo ethylene oxide (ama chlorohydrin). Cellulose ethers-ka milma ee aan ionic ahayn. Sababtoo ah HEC waxay leedahay sifooyin wanaagsan oo ah dhumuc, suul, kala firdhi, emulsifying, isku xidhka, sameynta filimada, ilaalinta qoyaanka iyo bixinta colloid ilaalin ah, waxaa si weyn loogu isticmaalay sahaminta saliidda, dahaarka, dhismaha, daawada, cuntada, dharka, warqadda iyo polymer Polymerization iyo beeraha kale. Heerka sifeynta mesh 40 ≥ 99%; heerkulka jilitaanka: 135-140°C; cufnaanta muuqata: 0.35-0.61g/ml; heerkulka kala-go'a: 205-210°C; xawaaraha gubashada gaabiska ah; heerkulka dheelitirka: 23°C; 50% 6% at rh, 29% at 84% rh.
Sida loo isticmaalo hydroxyethyl cellulose
lagu daray si toos ah wakhtiga wax soo saarka
1. Biyo nadiif ah ku dar baaldi weyn oo lagu qalabeeyay makiinada isku dhafka sare.
Cellulose-ka Hydroxyethyl
2. Bilow inaad si joogto ah u walaaqdo xawaare hoose oo si tartiib ah ugu shaandhee cellulose hydroxyethyl xalka si siman.
3. Sii wad walaaq ilaa dhammaan walxaha ay qooyaan.
4. Kadibna ku dar wakiilka ilaalinta hillaaca, waxyaabaha aasaasiga ah sida midabada, qalabka fidinta, biyaha ammonia.
5. Walaaq ilaa dhammaan hydroxyethyl cellulose ay gebi ahaanba milmaan (dhegxaanta xalka ayaa si weyn u kordheysa) ka hor inta aadan ku darin qaybaha kale ee qaacidada, oo shiidi ilaa badeecada dhammaatay.
Waxaa ku qalabaysan khamriga hooyada
Habkani waa in marka hore la diyaariyo khamriga hooyada oo leh xoog badan, ka dibna lagu daro rinjiga latex. Faa'iidada habkani waa inuu leeyahay dabacsanaan badan oo si toos ah loogu dari karo rinjiga la dhammeeyay, laakiin waa in si habboon loo kaydiyaa. Tallaabooyinku waxay la mid yihiin Tallaabooyinka 1-4 ee Habka 1, farqiga ayaa ah inaan loo baahnayn in la walaaqo ilaa uu si buuxda u milmo oo uu noqdo xal fiiqan.
Boorash loogu talagalay phenology
Maadaama dareerayaasha dabiiciga ah ay yihiin dareerayaal liita oo loogu talagalay hydroxyethyl cellulose, dareerayaashan dabiiciga ah waxaa loo isticmaali karaa diyaarinta boorashka. dareerayaasha dabiiciga ah ee ugu badan ee la isticmaalo waa dareerayaasha dabiiciga ah sida ethylene glycol, propylene glycol iyo filim sameeyayaasha (sida ethylene glycol ama diethylene glycol butyl acetate) ee qaabaynta rinjiga. Biyaha barafku sidoo kale waa dareere liita, sidaa darteed biyaha barafka waxaa badanaa lala isticmaalaa dareerayaasha dabiiciga ah si loogu diyaariyo boorashka. hydroxyethyl cellulose ee boorashka si toos ah ayaa loogu dari karaa rinjiga, hydroxyethyl cellulose-na waa la qaybiyay oo lagu bararay boorashka. Marka lagu daro rinjiga, isla markiiba way milmaysaa waxayna u dhaqantaa sidii dhumuc weyn. Ka dib marka lagu daro, sii wad walaaqidda ilaa hydroxyethyl cellulose uu si buuxda u milmo oo uu isku mid noqdo. Guud ahaan, boorashka waxaa lagu sameeyaa iyadoo lagu qaso lix qaybood oo dareere dabiici ah ama biyo baraf ah hal qayb oo ka mid ah hydroxyethyl cellulose. Ka dib qiyaastii 6-30 daqiiqo, hydroxyethyl cellulose waa la waraabin doonaa oo si cad ayaa loo barari doonaa. Xagaaga, heerkulka biyuhu guud ahaan aad buu u sarreeyaa, sidaa darteed kuma habboona in la isticmaalo boorashka.
Taxaddarrada ku saabsan hydroxyethyl cellulose
Maadaama hydroxyethyl cellulose-ka dusha sare lagu daweeyay uu yahay budo ama cellulose adag, way fududahay in la maareeyo oo lagu milmo biyo ilaa inta la fiiro gaar ah la siinayo waxyaabaha soo socda.
1. Kahor iyo ka dib marka lagu daro hydroxyethyl cellulose, waa in si joogto ah loo walaaqaa ilaa xalka uu noqdo mid gebi ahaanba hufan oo cad.
2. Waa in si tartiib ah loogu shaandheeyaa haanta isku darka, ha si toos ah ugu darin xaddi badan oo hydroxyethyl cellulose ama hydroxyethyl cellulose ah oo sameeyay buro iyo kubbado haanta isku darka. 3. Heerkulka biyaha iyo qiimaha PH ee biyaha waxay leeyihiin xiriir cad oo la xiriira kala dirista hydroxyethyl cellulose, sidaa darteed waa in fiiro gaar ah la siiyaa.
4. Ha ku darin walxo alkaline ah isku darka ka hor inta aan budada hydroxyethyl cellulose lagu kululayn biyaha. Kordhinta qiimaha pH ka dib marka la kululeeyo ayaa kaa caawin doonta milmida.
5. Inta ugu macquulsan, ku dar wakiilka ka hortagga fungal sida ugu dhakhsaha badan.
6. Marka la isticmaalayo hydroxyethyl cellulose oo leh viscosity sare, heerka khamriga hooyada waa in uusan ka badnaan 2.5-3%, haddii kale khamriga hooyada way adkaan doontaa in la maareeyo. Cellulose-ka hydroxyethyl ee la daaweeyay guud ahaan ma fududa in la sameeyo buro ama goobo wareegsan, mana samayn doono colloids wareegsan oo aan milmi karin ka dib marka lagu daro biyo.
Guud ahaan waxaa loo isticmaalaa sidii dhumuc-dhegeeye, wakiil ilaalin ah, dhejis, xasiliye iyo wax lagu daro diyaarinta emulsion, jelly, boomaato, looshin, nadiifiye indhaha, suppository iyo kiniin, waxaana sidoo kale loo isticmaalaa sidii jel hydrophilic iyo walxo qalfoof ah 1. Diyaarinta diyaarinta sii-deynta joogtada ah ee nooca qalfoofka. Waxa kale oo loo isticmaali karaa sidii xasiliye cuntada.
Waqtiga boostada: Febraayo-02-2023