Thickener hec hydroxyethyl cellulose

I-Hydroxyethyl cellulose (HEC) yi-nonionic cellulose derivative esetyenziswa kakhulu kumashishini ahlukeneyo ngenxa yokuqina kwayo okugqwesileyo, ukuxhoma, kunye neempawu zayo zokumisela. I-HEC i-polymer e-soluble yamanzi enokuthi inyibilike ngokulula emanzini abandayo ukwenza izisombululo ezicacileyo nezingenambala. I-HEC isetyenziswa ngokuqhelekileyo njenge-thickener kuluhlu olubanzi lwezicelo, kubandakanywa iingubo, i-adhesives, iimveliso zokunakekelwa komntu, kunye namayeza.

I-HEC iveliswa ngokuguqula i-cellulose yendalo, i-polymer equkethe iiyunithi ze-glucose ezidityaniswe kunye ne-β (1→ 4) iibhondi ze-glycosidic. Ukuguqulwa kwe-cellulose kubandakanya ukwazisa amaqela e-hydroxyethyl (-CH2CH2OH) kwiiyunithi ze-anhydroglucose ze-cellulose backbone. Olu hlengahlengiso lubangela i-polymer e-soluble yamanzi enokuthi yenze izibophelelo ze-hydrogen kunye neamolekyu zamanzi, ezikhokelela ekubunjweni kwesisombululo se-viscous.

I-HEC i-thickener esebenzayo ngenxa yokukwazi ukwenza i-gel-efana nesakhiwo xa ifakwe kwisisombululo. Amaqela e-hydroxyethyl kwi-molecule ye-HEC inokunxibelelana nama-molecule amanzi, okubangela ukubunjwa kweebhondi ze-hydrogen. Iibhondi ze-hydrogen phakathi kwe-molecule ye-HEC kunye neemolekyuli zamanzi zibangela ukuba i-molecule ye-HEC ibe yi-hydrated kwaye yandise ngobukhulu. Njengoko i-molecule ye-HEC isanda, yenza isakhiwo senethiwekhi esine-dimensional emithathu ebamba amanzi kunye nezinye izinto ezichithwayo, okubangelwa ukwanda kwe-viscosity yesisombululo.

Ubuchule bokutyeba be-HEC buchaphazeleka yizinto ezahlukeneyo, kubandakanywa ukugxilwa kwe-HEC kwisisombululo, ubushushu, kunye ne-pH. Uxinzelelo oluphezulu lwe-HEC kwisisombululo lukhokelela ekunyuseni okuphawulekayo kwi-viscosity. Nangona kunjalo, ukwandisa ukugxininiswa kwe-HEC ngaphaya kwendawo ethile kunokukhokelela ekunciphiseni kwe-viscosity ngenxa yokubunjwa kwee-aggregates. Ubushushu buchaphazela amandla okuqina kwe-HEC, kunye namaqondo aphezulu aphezulu akhokelela ekunciphiseni kwe-viscosity. I-pH yesisombululo inokuchaphazela amandla okuqina kwe-HEC, kunye namaxabiso aphezulu e-pH akhokelela ekunciphiseni kwe-viscosity.

I-HEC iqhele ukusetyenziswa njenge-thickener kwizicelo ezahlukeneyo, kubandakanya iingubo kunye neepeyinti. Kwiingubo, i-HEC yongezwa ekuqulunqweni kokuphucula i-rheological properties of the coating. Iipropati ze-rheological ze-coating zibhekisela kwikhono layo lokuhamba kunye nenqanaba phezu komhlaba. I-HEC inokuphucula ukuhamba kunye nokulinganisa iimpawu zengubo ngokunyusa i-viscosity yayo kunye nokunciphisa ukutyekela kwayo. I-HEC inokuphucula ukuzinza kwengubo ngokuthintela ukuhlaliswa kwee-pigments kunye nezinye izinto eziqinileyo.

Kwii-adhesives, i-HEC isetyenziswe njenge-thickener yokuphucula i-viscosity kunye ne-tackiness ye-adhesive. I-viscosity ye-adhesive iyimfuneko kwikhono layo lokunamathela kwindawo kunye nokuhlala kwindawo. I-HEC inokuphucula i-viscosity ye-adhesive kwaye ithintele ukuba iqhube okanye iqhube. I-HEC inokuphucula i-tackiness ye-adhesive, evumela ukuba ibambelele bhetele kumphezulu.

Kwiimveliso zokhathalelo lomntu, i-HEC isetyenziswa njenge-thickener kunye ne-stabilizer. I-HEC isetyenziswa ngokuqhelekileyo kwiishampu, i-conditioners, kunye nokuhlamba umzimba ukuphucula i-viscosity yabo kunye nokuthungwa. I-HEC inokuphucula ukuzinza kwezi mveliso ngokuthintela ukuhlukana kwesigaba kunye nokuhlaliswa kwezinto eziqinileyo.

Kumayeza, i-HEC isetyenziswa njenge-thickener kunye ne-agent yokumisa. I-HEC isetyenziswa ngokuqhelekileyo ekumisweni ngomlomo ukumisa iziyobisi ezinganyibilikiyo kwindawo elulwelo. I-HEC inokusetyenziswa njenge-thickener kwi-creams kunye neegels zokuphucula i-viscosity kunye nokuthungwa kwazo.

Ukuqukumbela, i-HEC yipolymer enyibilikayo emanzini esetyenziswa ngokubanzi njengento etyebileyo kumashishini ahlukeneyo ngenxa yokuqina kwayo okugqwesileyo, ukuxhoma, kunye neempawu zayo zokumisela.