Isalathisi se-viscosityi-hydroxypropyl methylcelluloseluphawu olubaluleke kakhulu. I-viscosity ayimeli ubunyulu. I-viscosity ye-cellulose HPMC ixhomekeke kwinkqubo yemveliso. Iindawo ezahlukeneyo zokusetyenziswa kufuneka zikhethe i-cellulose HPMC ene-viscosities ezahlukeneyo, hayi ukuba i-viscosity ye-cellulose HPMC iphezulu, kokukhona ingcono! Okulungileyo kulungile √
Ulawulo lokuxinana
1. I-hydroxypropyl methylcellulose ene-viscosity ephezulu ayinakuvelisa i-cellulose ephezulu kakhulu ngokuyitshiza nge-vacuum cleaner kwaye ithathe indawo yayo nge-nitrogen. Ngokubanzi, ukuveliswa kwe-cellulose ene-viscosity ephezulu eTshayina akunakulawulwa. Nangona kunjalo, ukuba isixhobo sokulinganisa i-oxygen encinci singafakwa kwiketile, ukuveliswa kwe-viscosity kunokulawulwa ngokwenziwa.
Ukusetyenziswa kweearhente ezisebenzisanayo
2. Ukongeza, xa ucinga ngesantya sokutshintshwa kwe-nitrogen, kwaye kwangaxeshanye, kulula kakhulu ukuvelisa iimveliso ezinobungqindilili obuphezulu nokuba inkqubo ayinamoya kangakanani na. Kakade ke, inqanaba le-polymerization yekotoni ecociweyo nalo libalulekile. Ukuba oko akusebenzi, kwenze ngokunxulumana ne-hydrophobic. Kukho ii-agents zasekhaya ezisebenzisanayo kule nkalo. Uhlobo lwe-agent enxulumeneyo ekhethiweyo lunempembelelo enkulu ekusebenzeni kwemveliso yokugqibela.
Umxholo weHydroxypropyl
3. Ioksijini eseleyo kwi-reactor ikhokelela ekuwohlokeni kwe-cellulose kunye nokuncipha kobunzima be-molecular, kodwa ioksijini eseleyo incinci. Akunzima ukwenza i-viscosity ephezulu logama nje iimolekyuli eziphukileyo ziphinde zaxhunyaniswa. Nangona kunjalo, izinga lokugcwala kwamanzi likwanxulumene kakhulu nomxholo we-hydroxypropyl. Ezinye iifektri zifuna ukunciphisa ixabiso kunye nexabiso kuphela, kwaye azifuni ukwandisa umxholo we-hydroxypropyl, ngoko umgangatho awunakufikelela kwinqanaba leemveliso ezifanayo zangaphandle.
ezinye izinto
4. Izinga lokugcina amanzi kwimveliso linobudlelwane obuhle ne-hydroxypropyl, kodwa kuyo yonke inkqubo yokusabela, ikwamisela izinga lokugcina amanzi, isiphumo se-alkaliization, umlinganiselo we-methyl chloride kunye ne-propylene oxide, kunye noxinzelelo lwe-alkali. Kwaye umlinganiselo wamanzi kwikotoni ecociweyo umisela ukusebenza kwemveliso.
Ixesha lokuthumela: Okthobha-19-2022