Gxininisa kwiCellulose ethers

Ngaba ukwandisa i-viscosity ye-cellulose ether kuya kwandisa izinga lokuhamba?

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 ngezinto 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 nokusebenza.

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
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