Waa maxay Dabeecadda Hydroxyethyl Methyl Cellulose

Hydroxyethyl Methyl Cellulose (HEMC) waa derivative eter cellulose ah, oo la mid ah Hydroxypropyl Methylcellulose (HPMC), oo leh sifooyin gaar ah oo ka soo jeeda qaab dhismeedkeeda kiimikaad. Halkan waxaa ah dulmar guud oo ku saabsan dabeecadda Hydroxyethyl Methyl Cellulose:

1. Qaabdhismeedka Kiimikada:

HEMC waxa lagu farsameeyaa iyada oo wax ka beddeleysa cellulose iyada oo loo marayo fal-celin kiimikaad, gaar ahaan iyada oo la soo bandhigayo labada kooxood ee hydroxyethyl (-CH2CH2OH) iyo methyl (-CH3) ee lafta dhabarka cellulose. Qaab dhismeedkan kiimikaad wuxuu siinayaa HEMC sifooyinkeeda iyo hawlaheeda kala duwan.

2. Dabeecadda biyo-biyoodka:

Sida ether-yada kale ee cellulose, HEMC waa hydrophilic, taasoo la micno ah inay xiriir la leedahay biyaha. Marka lagu kala firdhiyo biyaha, molecules HEMC way fuuq baxaan oo sameeyaan xal viscous ah, ka qaybqaata dhumucdooda iyo sifooyinka Dabeecaddan hydrophilic waxay u ogolaataa HEMC inay nuugo oo ay hayso biyaha, kor u qaadida waxqabadkeeda codsiyada kala duwan.

3. Soluble:

HEMC waxay ku milmaysaa biyaha, samaynta xalal cad oo muuqda. Heerka milmidu waxay ku xidhan tahay arrimo ay ka mid yihiin miisaanka unugyada, heerka beddelka, iyo heerkulka. Xalalka HEMC waxay mari karaan kala-soocidda wajiga ama gelitaanka xaaladaha qaarkood, kuwaas oo lagu xakameyn karo iyada oo la hagaajinayo cabbirrada qaabeynta.

4. Tilmaamaha Rheological:

HEMC waxay muujisaa habdhaqanka pseudoplastic, taasoo la micno ah viscositykeedu hoos u dhaco cadaadiska xiirid. Gurigani wuxuu u oggolaanayaa xalalka HEMC inay si fudud u qulqulaan inta lagu jiro codsiga laakiin ay dhumucdaan markay taagan yihiin ama nasanayaan. Sifooyinka rheological ee HEMC waxaa lagu jaangooyaa iyadoo la hagaajinayo arrimo ay ka mid yihiin fiirsashada, miisaanka unugyada, iyo heerka beddelka.

5. Samaynta Filim:

HEMC waxay leedahay sifooyin samaynta filimada, taas oo u oggolaanaysa inay samayso filimo dabacsan oo isku xidhan marka la qalajiyo. Filimadani waxay bixiyaan guryaha xannibaadda, dhejinta, iyo ilaalinta substrates ee codsiyada kala duwan. Awoodda samaynta filimada ee HEMC waxay gacan ka geysataa isticmaalkeeda dahaarka, xabagta, iyo qaababka kale.

6. Deganaanshaha kulaylka:

HEMC waxay muujisaa xasilloonida kulaylka wanaagsan, u adkaysata heerkulka sare inta lagu jiro habaynta iyo kaydinta. Ma hoos u dhigto ama ma lumiso sifooyinkeeda shaqo marka loo eego xaaladaha wax soo saarka ee caadiga ah. Degganaanshiyaha kulaylka ayaa u oggolaanaya HEMC in loo isticmaalo qaab-dhismeedka kuwaas oo mara hababka kuleylinta ama daaweynta.

7. Waafaqid:

HEMC waxay la jaanqaadi kartaa noocyo kala duwan oo qalab kale ah, oo ay ku jiraan dareerayaasha organic, surfactants, iyo polymers. Waxa lagu dari karaa qaab-dhismeedyo leh waxyaabo kala duwan oo lagu daro iyada oo aan la samayn is-dhexgal muhiim ah. Waafaqid Tani waxay u ogolaanaysaa HEMC in loo isticmaalo codsiyada kala duwan ee warshadaha kala duwan.

Gabagabo:

Hydroxyethyl Methyl Cellulose (HEMC) waa eter cellulose-ka badan leh oo leh sifooyin gaar ah oo ka dhigaya mid qiimo leh warshadaha kala duwan. Dabeecaddeeda hydrophilic, solubility, sifooyinka rheological, kartida samaynta filimka, xasiloonida kulaylka, iyo iswaafajinta waxay gacan ka geysataa waxtarkeeda codsiyada sida dahaarka, dhejiska, qalabka dhismaha, alaabta daryeelka shakhsi ahaaneed, iyo daawooyinka. Fahamka dabeecadda HEMC, qaabeeyayaasha ayaa wanaajin kara isticmaalkeeda qaab-dhismeedyada si loo gaaro sifooyinka waxqabadka la doonayo iyo shaqeynta alaabta.