Ukwandisa i-viscosity ye-cellulose ethers ngokubanzi kunciphisa izinga lokuhamba kwesisombululo.I-cellulose ethers liqela lee-polymers ezinyibilikayo zamanzi eziphuma kwi-cellulose ezisetyenziswa ngokuqhelekileyo kumashishini ahlukeneyo, kubandakanywa amayeza, ukutya kunye nokwakhiwa.I-viscosity yesisombululo ngumlinganiselo wokuchasana kwayo ukuhamba kwaye ichaphazeleka kwizinto ezifana nokugxininiswa, ukushisa, kunye nobunzima be-molecular ye-cellulose ether.
Nantsi ingcaciso ethe kratya yokuba ukonyuka kwe-cellulose ether viscosity kulichaphazela njani izinga lokuhamba:
Ubudlelwane phakathi kwe-viscosity kunye nesantya sokuhamba:
I-Viscosity yi-friction yangaphakathi ngaphakathi kolwelo oluchasayo ukuhamba kwayo.Ilinganiswa ngeeyunithi ezinjenge-centipoise (cP) okanye i-pascal seconds (Pa·s).
Isantya sokuhamba kwesisombululo sichasene ngokungafaniyo ne-viscosity yayo.I-viscosity ephezulu ithetha ukuxhathisa okukhulu ukuhamba, okukhokelela kumazinga aphantsi okuhamba.
Iimpawu zeCellulose ether:
I-cellulose ethers zihlala zongezwa kwisisombululo sokuguqula iimpawu zayo ze-rheological.Iintlobo eziqhelekileyo ziquka i-methylcellulose (MC), i-hydroxypropylcellulose (HPC), kunye ne-carboxymethylcellulose (CMC).
I-viscosity yezisombululo ze-cellulose ether ixhomekeke kwizinto ezifana nokugxininiswa, ubushushu kunye nesantya sokucheba.
Isiphumo sokugxila:
Ukonyusa i-ethers ye-cellulose ngokubanzi kwandisa i-viscosity.Oku kungenxa yokuba ugxininiso oluphezulu luthetha amatyathanga epolymer ngaphezulu kwisisombululo, okukhokelela kuxhathiso olukhulu lokuhamba.
Ifuthe lobushushu:
Ubushushu buchaphazela i-viscosity ye-cellulose ethers.Kwezinye iimeko, njengoko ukushisa kukhula, i-viscosity iyancipha.Nangona kunjalo, olu lwalamano lunokwahluka ngokuxhomekeke kuhlobo oluthile lwe-cellulose ether kunye neempawu zayo zesisombululo.
Ukuxhomekeka kwizinga le-shear:
I-viscosity yezisombululo ze-cellulose ether ngokubanzi ixhomekeke kwireyithi yokucheba.Kwizinga eliphezulu lokucheba (umzekelo, ngexesha lokumpompa okanye ukuxuba), i-viscosity inokuncipha ngenxa yokuziphatha kwe-shear thinning.
Impembelelo kwitrafikhi:
Ukwandisa i-cellulose ether viscosity kunokubangela ukuncipha kwamazinga okuhamba kwiinkqubo ezifuna ukuthutha, ukupompa, okanye ukukhupha izisombululo.Oku kufanelekileyo kwizicelo ezifana neengubo, i-adhesives kunye ne-pharmaceutical formulations.
Amanqaku esicelo:
Ngelixa i-viscosity ephezulu inokufuneka kwezinye izicelo zokuphucula ukusebenza kwemveliso okanye ukuzinza, oku kufuneka kulinganiswe kwimiba ephathekayo yokuphatha kunye nokucubungula.
Ukulungiselela iresiphi:
Abaqulunqi bahlala bekhulisa i-cellulose ether concentration kunye nezinye iiparameters zokuqulunqa ukuphumeza i-viscosity efunekayo kwisicelo esithile ngaphandle kokuchaphazela ukugeleza kwiqondo elingamkelekanga.
Ukwandisa i-cellulose ether viscosity ngokuqhelekileyo kubangela ukuhla kwesantya sokuhamba ngenxa yokwanda kokuchasana nokuhamba.Nangona kunjalo, ubudlelwane obuchanekileyo buchatshazelwa yizinto ezifana nokugxininiswa, izinga lokushisa kunye nesantya se-shear, kunye nohlengahlengiso lokuqulunqa lunokwenziwa ukufezekisa ibhalansi efunekayo phakathi kwe-viscosity kunye nokuhamba.
Ixesha lokuposa: Jan-20-2024