Isalathisi se-viscosity se-hydroxypropyl methylcellulose sisalathiso esibaluleke kakhulu.I-viscosity ayibonisi ubunyulu.I-viscosity ye-cellulose HPMC ixhomekeke kwinkqubo yokuvelisa.Iimeko ezahlukeneyo zokusetyenziswa kufuneka zikhethe i-cellulose HPMC ene-viscosities eyahlukeneyo, hayi i-viscosity ephezulu ye-cellulose HPMC, ngcono!Into efanelekileyo ilungile.
Ulawulo lweViscosity
1. Kwimveliso ye-high-viscosity hydroxypropyl methylcellulose, i-vacuuming kuphela kunye nokutshintshwa kwe-nitrogen ayikwazi ukuvelisa i-cellulose ephezulu kakhulu.Ngokuqhelekileyo, ukuveliswa kwe-cellulose ephezulu ye-viscosity e-China ayikwazi ukulawulwa.Nangona kunjalo, ukuba imitha ye-oxygen yokulandelela ingafakwa kwi-kettle, ukuveliswa kwe-viscosity yayo kunokulawulwa ngokufanelekileyo.
Ukusetyenziswa kwearhente yombutho
2. Ukongezelela, ngokuqwalasela isantya sokutshintshwa kwe-nitrogen, kulula ukuvelisa iimveliso eziphezulu ze-viscosity kungakhathaliseki ukuba le nkqubo ingenamoya kangakanani.Ewe kunjalo, inqanaba lepolymerization yomqhaphu osulungekileyo likwabalulekile.Ukuba oko akusebenzi, yenza oko kunye ne-hydrophobic association.Kukho iiarhente zombutho kule ndawo eTshayina.Luhlobo luni lwearhente yonxulumano oluya kukhetha olunempembelelo enkulu ekusebenzeni kwemveliso yokugqibela.
Umxholo weHydroxypropyl
3. I-oksijini eseleyo kwi-reactor ikhokelela ekuthotyweni kwe-cellulose kunye nobunzima obuphantsi be-molecular.Nangona kunjalo, ukuba i-oksijini eseleyo iyancipha, nje ukuba iimolekyuli eziphukileyo ziphinde zixhunywe, akunzima ukwenza i-viscosity ephezulu.Nangona kunjalo, izinga lokuzalisa linento eninzi yokwenza nomxholo we-hydroxypropyl.Ezinye iifektri zifuna kuphela ukunciphisa iindleko kunye nexabiso, kodwa azifuni ukwandisa umxholo we-hydroxypropyl, ngoko umgangatho awukwazi ukufikelela kwinqanaba leemveliso ezifanayo zangaphandle.
ezinye izinto
4. Izinga lokugcinwa kwamanzi kwimveliso inobudlelwane obukhulu kunye ne-hydroxypropyl, kodwa iphinda inqume izinga lokugcinwa kwamanzi, umphumo we-alkalization, umlinganiselo we-methyl chloride kunye ne-propylene oxide, kunye noxinzelelo lwe-alkali kuyo yonke inkqubo yokuphendula.Zombini umlinganiselo wamanzi kunye nekotoni esulungekileyo imisela ukusebenza kwemveliso.
Ixesha lokuposa: Apr-03-2023