Hordhac Hydroxyethylcellulose (HEC):
Hydroxyethylcellulose waa nooc ka soo jeeda cellulose, oo ah polysaccharide si dabiici ah u dhacda oo laga helo gidaarada unugyada dhirta. Cellulose waxa uu ka kooban yahay unugyo gulukoos oo soo noqnoqda oo isku xidhan β-1,4 glycosidic bonds. Hydroxyethylcellulose waxaa lagu helaa iyada oo wax ka beddeleysa cellulose iyada oo la gelinayo kooxaha hydroxyethyl (-CH2CH2OH) oo la saarayo laf dhabarta.
Habka wax soo saarka:
Etherification of Cellulose: Wax soo saarka HEC waxay ku lug leedahay etherification ee cellulose. Habkani wuxuu caadi ahaan ka bilaabmaa cellulose oo ka soo jeeda saxarka alwaax ama suufka.
Falcelinta Ethylene Oxide: Cellulose ayaa markaas lagu falceliyaa ethylene oxide iyada oo la raacayo xaaladaha alkaline. Dareen-celintani waxay keenaysaa beddelka kooxaha hydroxyl ee lafdhabarta cellulose ee kooxaha hydroxyethyl, taasoo keentay hydroxyethylcellulose.
Nadiifinta: Alaabta ayaa markaa la nadiifiyaa si meesha looga saaro waxyaallaha aan falcelin lahayn iyo alaabta dhinaca.
Astaamaha Hydroxyethylcellulose:
Solubility: HEC waxay ku milmi kartaa labadaba qabow iyo biyo kulul, taasoo ka dhigaysa cad ilaa waxoogaa turbid xalal iyadoo ku xiran diiradda.
Viscosity: Waxa ay muujisaa hab-dhaqanka pseudoplastic, taasoo la macno ah mawqifkiisu hoos u dhaco iyada oo korodhka heerka dhogorta. Viscosity ee xalalka HEC waxaa lagu hagaajin karaa arrimo kala duwan sida xoojinta iyo heerka beddelka.
Guryaha Samaynta Filimada: HEC waxay samayn kartaa filimo dabacsan oo isku dhafan, taas oo ka dhigaysa mid faa'iido leh codsiyada kala duwan ee loo baahan yahay samaynta filimada.
Wakiilka dhumucda: Mid ka mid ah isticmaalka aasaasiga ah ee HEC waa sida wakiilka dhumucyada qaabab kala duwan, sida waxyaalaha la isku qurxiyo, daawooyinka, iyo alaabta daryeelka shakhsi ahaaneed.
Codsiyada Hydroxyethylcellulose:
Waxyaabaha la isku qurxiyo iyo Alaabooyinka Daryeelka Shakhsi ahaaneed: HEC waxaa si weyn loogu isticmaalaa qurxinta iyo alaabta daryeelka shakhsi ahaaneed sida dhumuc weyn, xasiliye, iyo wakiilka filim sameynta ee alaabada sida kareemka, kiriimyada, shaambooyinka, iyo daawada cadayga.
Daawooyinka: Qaababka dawooyinka, HEC waxa ay u adeegtaa sidii wakiilka hakinta, xidhaha, iyo matrix-sii daynta la xakameeyey ee daahaarka kiniinka iyo qaabaynta afka.
Rinjiyeynta iyo Dahaarka: HEC waxaa lagu isticmaalaa rinjiyada biyaha ku salaysan iyo dahaarka sidii dhumuc iyo wax ka beddelka rheology si loo xakameeyo viscosity iyo horumarinta sifooyinka codsiga.
Warshadaha cuntada: Warshadaha cuntada, HEC waxa loo isticmaalaa sidii wakiilka dhumuc iyo xasilinta ee alaabta sida suugada, dhaymada, iyo waxyaabaha caanaha.
Dood Kala Soocida Dabiiciga ah ama Dheefta:
Kala soocida hydroxyethylcellulose sida dabiiciga ah ama synthetic ayaa laga doodi karaa. Waa kuwan doodaha labada dhinac:
Doodaha Kala-saarista sida Synthetic:
Beddelka Kiimikada: HEC waxaa laga soo qaatay cellulose iyada oo loo marayo habka wax ka beddelka kiimikaad ee ku lug leh falcelinta cellulose ee leh ethylene oxide. Bedelkan kiimikaad waxaa loo arkaa mid dabiici ah.
Wax-soo-saarka warshadaha: HEC waxa ugu horrayn lagu soo saaraa hab-socodyo warshadeed oo ku lug leh falcelinta la xakameeyey iyo tillaabooyinka sifaynta, kuwaas oo ah wax-soo-saarka isku-dhafka isku-dhafka ah.
Shahaadada wax ka beddelka: Heerka beddelka ee HEC si sax ah ayaa loo kontarooli karaa inta lagu jiro isku-dhafka, taas oo muujinaysa asalka synthetic.
Doodaha Kala-saarista sida Dabiiciga ah:
Ka soo jeeda Cellulose: HEC waxay ugu dambeyntii ka soo baxdaa cellulose, polymer dabiici ah oo si weyn looga helo dhirta.
Isha la cusboonaysiin karo: Cellulose, oo ah alaabta bilawga ah ee wax soo saarka HEC, waxa laga helaa agab la cusboonaysiin karo sida saxarka alwaax iyo suufka.
Biodegradability: Sida cellulose, HEC waa biodegradable, oo u jajaban alaabada aan waxyeello lahayn ee deegaanka muddo ka dib.
La mid ahaanshaha shaqada ee Cellulose: Inkasta oo wax ka beddel kiimikaad ah, HEC ay sii haysato sifooyin badan oo cellulose ah, sida milanka biyaha iyo noole ku habboonaanta.
hydroxyethylcellulose waa polymer isku dhafan oo ka soo jeeda cellulose iyada oo loo marayo habka wax ka beddelka kiimikada. Iyadoo wax soo saarkeedu ay ku lug leeyihiin falcelinta synthetic iyo hababka warshadaha, waxay ugu dambeyntii ka timid ilo dabiici ah oo la cusbooneysiin karo. Doodda ku saabsan in HEC loo kala saaro inay tahay mid dabiici ah ama synthetic waxay ka tarjumaysaa kakanaanta qeexida ereyadan macnaha guud ee polymers-ka dabiiciga ah ee la beddelay. Si kastaba ha ahaatee, biodegradability-keeda, dib-u-cusboonaysiinta la cusboonaysiin karo, iyo shabaha shaqada ee cellulose waxay soo jeedinayaan inay leedahay sifooyin ka kooban isku-dhisyo dabiici ah iyo kuwo isku-dhafan, taas oo mugdi gelinaysa xuduudaha u dhexeeya labada qaybood.
Waqtiga boostada: Abriil-01-2024