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 elungileyo ilungile!
1. Ulawulo lwe-Viscosity
I-high-viscosity hydroxypropyl methylcellulose ayikwazi ukuvelisa i-cellulose ephezulu kakhulu kuphela ngokufunxa kunye nokutshintshwa kwenitrogen kwimveliso.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.
2. Ukusetyenziswa kwe-arhente yombutho
Ukongeza, ukuqwalasela isantya endaweni ye-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.
3. Umxholo weHydroxypropyl
I-oksijeni eseleyo kwi-reactor ibangela ukuthotywa kwe-cellulose kunye nokuncipha kwesisindo se-molecular, kodwa i-oksijini eseleyo iyancipha, nje ukuba iamolekyu eziphukileyo zixhunywe kwakhona, 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 zangaphandle ezifanayo.
4. Ezinye izinto
Izinga lokugcinwa kwamanzi kwimveliso linobudlelwane obukhulu kunye ne-hydroxypropyl, kodwa kuyo yonke inkqubo yokusabela, iphinda inqume izinga lokugcinwa kwamanzi, umphumo we-alkalization, umlinganiselo we-methyl chloride kunye ne-propylene oxide, i-alkali concentration kunye nokugcinwa kwamanzi.Umlinganiselo kwikotoni esulungekileyo inquma ukusebenza kwemveliso.
Ixesha lokuposa: Apr-04-2023