Hydroxyethyl Cellulose (HEC)waa ether nonionic cellulose ether-biyood ku milma, kaas oo si weyn loogu isticmaalo dahaarka, qalabka dhismaha, daawada, kiimikooyinka maalinlaha ah iyo qaybaha kale. Si kastaba ha ahaatee, HEC waxay leedahay milanka biyaha sare iyo daciifnimada hydrophobicity, taas oo u horseedi karta xaddidnaanta waxqabadka xaaladaha qaarkood. Sidaa darteed, hydroxyethyl cellulose hydrophobically modified (HMHEC) ayaa u yimid si loo hagaajiyo sifooyinka rheological, awoodda dhumucdiisuna, xasilloonida emulsification iyo caabbinta biyaha.
1. Muhiimadda wax ka beddelka hydrophobic ee hydroxyethyl cellulose
Hagaajinta guryaha dhumucda iyo sifooyinka rheological
Wax ka beddelka Hydrophobic wuxuu si weyn u wanaajin karaa awoodda dhumuc ee HEC, gaar ahaan heerarka xiirid hoose. Waxay muujinaysaa viscosity sare, kaas oo gacan ka geysanaya hagaajinta thixotropy iyo pseudoplasticity ee nidaamka. Hantidani waxay si gaar ah muhiim ugu tahay dhinacyada dahaarka, dareerayaasha qodista saliidda, alaabta daryeelka shakhsi ahaaneed, iwm., waxayna kor u qaadi kartaa xasilloonida iyo isticmaalka saamaynta alaabta.
Hagaajinta xasilloonida emulsion
Maaddaama HEC-da la beddelay ay sameyn karto qaab-dhismeedka associative ee xalka aqueous, waxay si weyn u wanaajisaa xasilloonida emulsion-ka, waxay yareyn kartaa kala-soocidda saliidda-biyaha, waxayna hagaajinaysaa saameynta emulsification. Sidaa darteed, waxay leedahay qiimo codsi weyn oo ku saabsan dhinacyada dahaarka emulsion, alaabta daryeelka maqaarka iyo emulsifiers cuntada.
Kobcinta iska caabinta biyaha iyo sameynta filimada
HEC dhaqameed waa mid aad u sarreeya oo si fudud u milmi kara jawiga huurka sare ama biyaha, taas oo saameynaysa caabbinta biyaha ee walxaha. Iyada oo loo marayo wax ka beddelka hydrophobic, codsigeeda daboolka, dhejiska, waraaqaha iyo meelaha kale waa la wanaajin karaa, caabbinta biyaha iyo sifooyinka filimada waa la hagaajin karaa.
Hagaajinta sifooyinka khafiifinta xiirta
Hydrophobic-la beddelay HEC waxay yarayn kartaa viscosity ee xaaladaha xiirid sare, iyada oo la ilaalinayo joogteynta sare ee heerarka hoose ee dhogorta, taas oo hagaajinaysa waxqabadka dhismaha iyo yaraynta isticmaalka tamarta. Waxay qiimo muhiim ah ku leedahay warshadaha sida macdanta saliidda iyo dahaarka dhismaha.
2. Wax ka beddelka Hydrophobic ee hydroxyethyl cellulose
Beddelka HEC hydrophobic waxaa badanaa lagu gaaraa iyada oo la soo bandhigayo kooxaha hydrophobic si loo hagaajiyo milanka iyo dhumucdeeda guryaha iyada oo loo marayo tallaalid kiimiko ama beddelaad jireed. Hababka caadiga ah ee wax ka beddelka hydrophobic waa sida soo socota:
Ku-tallaalidda kooxda Hydrophobic
Soo bandhigida alkyl (sida hexadecyl), aryl (sida phenyl), siloxane ama kooxaha fluorinated ee molecule HEC iyada oo loo marayo falcelinta kiimikada si loo hagaajiyo hydrophobicity-keeda. Tusaale ahaan:
Isticmaalka falcelinta esterification ama falcelinta etherification si loogu tallaalo alkyl silsilad-dheer, sida hexadecyl ama octyl, si loo sameeyo qaab-dhismeed xiriiriye hydrophobic ah.
Soo bandhigida kooxaha silikoon iyada oo loo marayo wax ka beddelka siloxane si loo hagaajiyo caabbinta biyaha iyo saliidda.
Isticmaalka wax ka beddelka fluorination si loo hagaajiyo caabbinta cimilada iyo hydrophobicity, taasoo ka dhigaysa mid ku habboon daaha-dhamaadka sare ama codsiyada deegaanka gaarka ah.
Copolymerization ama wax ka beddelka isku xidhka
Marka la soo bandhigo comonomers (sida acrylates) ama wakiilada isku xidha (sida resins epoxy) si loo sameeyo shabakad isku xidha, iska caabinta biyaha iyo awooda dhumucda ee HEC waa la wanaajiyey. Tusaale ahaan, isticmaalka HEC hydrophobically modified ee emulsions polymer waxay kor u qaadi kartaa xasilloonida iyo saameynta dhumucda emulsion-ka.
Beddelka jirka
Isticmaalka xayeysiinta dusha sare ama tignoolajiyada dahaarka, molecules hydrophobic ayaa lagu dahaadhay dusha sare ee HEC si ay u sameeyaan hydrophobicity gaar ah. Habkani waa mid fudud oo ku habboon codsiyada leh shuruudaha sare ee xasiloonida kiimikada, sida cuntada iyo daawada.
Wax ka beddelka ururka Hydrophobic
Iyadoo la soo bandhigayo qadar yar oo ah kooxaha hydrophobic ee molecule HEC, waxay samaysaa isku-darka associative ee xalka aqueous, taas oo hagaajinaysa awoodda dhumucdeeda. Habkani waxaa si weyn loo isticmaalaa in horumarinta dhumucyada-waxqabadka sare oo ku haboon daahan, kiimikooyinka oilfield iyo beeraha kale.
Wax ka beddelka Hydrophobic eehydroxyethyl celluloseWaa hab muhiim ah oo lagu hagaajinayo waxqabadka codsiga, taas oo kor u qaadi karta awooddeeda dhumucdeeda, xasilloonida emulsification, caabbinta biyaha iyo sifooyinka rheological. Hababka wax ka beddelka caadiga ah waxaa ka mid ah ku-tallaalid kooxeed hydrophobic, copolymerization ama beddelka isku-xidhka, wax ka beddelka jireed iyo wax ka beddelka ururka hydrophobic. Xulashada macquulka ah ee hababka wax ka beddelka ayaa kor u qaadi kara waxqabadka HEC iyadoo loo eegayo shuruudaha dalabka ee kala duwan, si ay door weyn uga ciyaaraan dhinacyo badan sida dahaarka dhismaha, kiimikooyinka saliidda, daryeelka shakhsi ahaaneed, iyo daawada.
Waqtiga boostada: Mar-25-2025