Hydroxyethyl cellulose (HEC) waa eter cellulose aan ionic ahayn oo biyo-milmi kara. Waxaa si weyn loogu isticmaalaa daahan biyaha ku salaysan sababtoo ah dhumucdiisuna wanaagsan, emulsifying, filimada-samaynta iyo guryaha laali. Sida dhumuc iyo xasiliye ee daahan, HEC si weyn u wanaajin kartaa guryaha rheological iyo rinjiyeynta ee daahan.
1. Hawlaha ugu muhiimsan ee cellulose hydroxyethyl
Dahaarka biyaha ku salaysan, hawlaha ugu muhiimsan ee HEC waxay ka muuqdaan dhinacyada soo socda:
Saamaynta dhumucda: HEC waxay leedahay awood dhumuc xoog leh, taas oo si wax ku ool ah u wanaajin kara viscosity iyo awoodda hakinta ee daahan biyaha ku salaysan oo ka hortagtaa midabada iyo buuxinta dahaarka in ay dejiyaan.
Hagaajinta rheology: HEC waxay hagaajin kartaa dareeraha ku jira daahan biyaha ku salaysan si ay u muujiso viscosity hoose ee hoostiisa xiirid sare, taas oo sahlaysa in la faafiyo marka rinjiyeynta, iyada oo la muujinayo viscosity sare ee xaaladaha taagan, taas oo yaraynaysa socodka rinjiga. ifafaale laadlaadsan.
Deganaansho la wanaajiyey: HEC waxay leedahay caabbinta baraf-dhalaalida wanaagsan iyo xasilloonida kaydinta, taas oo kordhin karta nolosha shelf ee dahaarka iyo hubinta xasilloonida deegaanno kala duwan.
Hagaajinta sifooyinka filimada: HEC waxay samaysaa filim dabacsan ka dib marka rinjigu engego, kor u qaadida adhesion iyo xidhashada caabbinta filimka rinjiga iyo hagaajinta waxqabadka ilaalinta rinjiga.
2. Sida loo isticmaalo HEC
Marka la isticmaalayo HEC ee daahan biyaha ku salaysan, firidhsan iyo hababka kala diri iyo hababka isku darka tooska ah ayaa inta badan la isticmaalaa. Kuwa soo socda waa tillaabooyinka isticmaalka gaarka ah iyo farsamooyinka:
() 1. Kahortagitaanka si loo baabi'iyo HEC
HEC waa budo ay adagtahay in si toos ah loo milmo oo si fudud u samaysma kuuskuus biyo ah. Sidaa darteed, ka hor inta aan lagu darin HEC, waxaa lagu talinayaa in horay loo sii kala firdhiyo. Tallaabooyinka caadiga ah waa sida soo socota:
Walaaq oo kala firdhi: Si tartiib ah ugu dar HEC biyaha hoos-u-socod walaaqaya si aad uga fogaato samaynta kuuskuus Qadarka HEC ee lagu daray waa in lagu hagaajiyaa iyadoo loo eegayo shuruudaha viscosity ee daahan, guud ahaan xisaabinta 0.3% -1% wadarta caanaha.
Ka-hortagga keega: Marka lagu daro HEC, qadar yar oo ah walxaha lidka-caking, sida ethanol, propylene glycol, iwm., ayaa lagu dari karaa biyaha si ay u suurtageliso budada HEC inay si siman u kala firdhiso oo ay u yareyso suurtogalnimada in la dubayo.
(2). Habka kala firdhinta iyo kala dirida
Habka kala firdhinta iyo kala diriddu waa in HEC si gooni ah loo milo dareeraha viscous inta lagu jiro habka diyaarinta ee rinjiga, ka dibna ku dar rinjiga. Tallaabooyinka gaarka ah waa sida soo socota:
Habka kala dirida: HEC way adagtahay in lagu milmo heerkulka caadiga ah ama hooseeya, markaa biyaha si habboon ayaa loo kululayn karaa si loo gaaro heerkul ah 30-40 ° C si loo dedejiyo kala dirida HEC.
Waqtiga walaaqa: HEC si tartiib ah ayey u milmaysaa waxayna badanaa u baahan tahay walaaq ilaa 0.5-2 saacadood ilaa ay si buuxda u milmayso dareeraha viscous ee muuqda ama translucent.
Hagaajin qiimaha pH: Ka dib marka HEC la kala diro, qiimaha pH ee xalka waxaa lagu hagaajin karaa iyadoo loo eegayo baahiyaha, inta badan inta u dhaxaysa 7-9, si loo hagaajiyo xasilloonida dahaarka.
(3). Habka isku-darka tooska ah
Habka isku-darka tooska ah waa in lagu daro HEC si toos ah nidaamka dhogorta inta lagu jiro habka wax soo saarka daahan, kaas oo ku habboon dahaarka leh shuruudaha habka gaarka ah. Fadlan u fiirso qodobadan soo socda markaad shaqaynayso:
Marka hore qallaji ka dibna qoy: ku darHECqaybta engegan ee rinjiga biyaha ku salaysan marka hore, si siman ugu qas budada kale, ka dibna ku dar biyo iyo qaybo dareere ah si aad uga fogaato kacsanaanta.
Xakamaynta Shear: Marka lagu daro HEC ee daahan, waxaa lagama maarmaan ah in la isticmaalo qalabka isku-dhafka sare ee dhogorta, sida xawaaraha sare ee xawaaraha sare, si HEC si siman u kala firdhiso waqti gaaban oo ay gaarto viscosity loo baahan yahay.
3. Xakamaynta qiyaasta HEC
Dahaarka biyaha ku salaysan, qadarka HEC waa in la xakameeyaa iyadoo loo eegayo baahiyaha dhabta ah ee daboolka. HEC aad u badan waxay sababi doontaa viscosity dahaarka inuu noqdo mid aad u sarreeya oo saameynaya kartida shaqada; HEC aad u yar ayaa laga yaabaa inaanay gaadhin saamaynta dhumucda la filayo. Xaaladaha caadiga ah, qiyaasta HEC waxaa lagu xakameynayaa 0.3% -1% wadarta caanaha, iyo saamiga gaarka ah waxaa lagu hagaajin karaa tijaabooyin.
4. Taxadarrada HEC ee dahaarka biyaha ku salaysan
Ka fogow gardarada: HEC waxay u janjeertaa inay kor u qaaddo biyaha, markaa markaad ku darto, ku dar si tartiib ah intii suurtogal ah, si siman u kala firdhi, kana fogow isku darka hawada intii suurtogal ah.
Heerkulka kala dirida: HEC si dhakhso ah ayay u milmaan heerkul sare, laakiin heerkulku waa inaanu ka badnayn 50°C, haddii kale waxa laga yaabaa inuu saameeyo viscosity-kiisa.
Xaaladaha kicinta: Walaaq joogto ah ayaa loo baahan yahay inta lagu jiro habka kala dirida HEC, iyo weelasha daboolka leh waa in la isticmaalaa inta ugu badan ee suurtogalka ah si looga hortago wasakhda wasakhda dibadda iyo uumiga biyaha.
Hagaajinta qiimaha pH: Viscosity of HEC waxay kordhin doontaa xaaladaha alkaline, markaa qiimaha pH ee xalku wuxuu u baahan yahay in la hagaajiyo si macquul ah si looga hortago in waxqabadka daboolka uu hoos u dhaco sababtoo ah pH xad-dhaaf ah.
Tijaabada Laqabsiga: Marka la samaynayo qaabab cusub, isticmaalka HEC waa in lagu tijaabiyaa la jaanqaadida dhumucyada kale, emulsifiers, iwm. si loo hubiyo in aysan dhicin falcelin xun.
5. Tusaalooyinka codsiga ee HEC ee dahaarka biyaha ku salaysan
HEC waxaa loo isticmaali karaa dhumuc ahaan labada dahaarka gidaarka gudaha ee biyaha ku saleysan iyo dahaarka gidaarka dibadda ee biyaha ku saleysan. Tusaale ahaan:
Rinjiga gidaarka gudaha ee biyaha ku salaysan: HEC waxaa loo isticmaalaa si loo hagaajiyo sifooyinka rinjiga, samaynta codsiga mid sahlan oo xitaa xitaa, iyo yaraynta calaamadaha burushka.
Dahaarka gidaarka dibadda ee biyaha ku salaysan: HEC waxay kor u qaadi kartaa iska caabbinta sag-caabeedka iyo caabbinta cimilada ee dahaarka waxayna ka fogaan kartaa waxyeelada filimka daahan ee ay sababto nabaad guurka roobka.
Codsiga HEC ee daboolka biyaha ku salaysan ma hagaajin karo oo kaliya waxqabadka dhismaha ee daboolka, laakiin sidoo kale waxay hagaajinaysaa tayada muuqata iyo adkeysiga filimka daahan. Codsiyada wax ku oolka ah, marka loo eego shuruudaha gaarka ah ee daboolka, habka kala dirida iyo qadarka dheeraadka ah ee HEC ayaa si macquul ah loo doortay, oo lagu darayo diyaarinta alaabta kale ee cayriin, saameyn tayo sare leh ayaa lagu gaari karaa.
Waqtiga boostada: Nov-10-2024