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 ecocekileyo inquma ukusebenza kwemveliso.
Ixesha lokuposa: Apr-04-2023