1.I-HPMCyahlulwe ngohlobo olukhawulezileyo nohlobo olukhawulezayo lokusasazwa.
Uhlobo lwe-HPMC fast dispersion type lune-suffixed ngoonobumba u-S, kwaye i-glyoxal kufuneka yongezwe ngexesha lenkqubo yemveliso.
Uhlobo olukhawulezileyo lwe-HPMC alufaki onobumba, njengokuthi “100000″ kuthetha “100000 viscosity.”
2. Ukuba kukho okanye akukho S, iimpawu zahlukile
I-HPMC esasazeka ngokukhawuleza isasazeka ngokukhawuleza xa idibana namanzi abandayo ize inyamalale emanzini. Ngeli xesha, ulwelo aluna-viscosity, kuba i-HPMC isasazeka kuphela emanzini ngaphandle kokunyibilika ngokwenene. Emva kwemizuzu emibini, i-viscosity yolwelo iyanda kancinci kancinci, yenze i-colloid ecacileyo ene-viscous Thick.
I-HPMC ekhawulezileyo ingasasazeka ngokukhawuleza emanzini ashushu malunga nama-70°C. Xa ubushushu buhla bufikelela kubushushu obuthile, i-viscosity iya kubonakala kancinci de kube kwakheka i-colloid ecacileyo ethambileyo.
3. Ukuba une-S okanye awunayo, injongo yahlukile
I-HPMC ekhawulezileyo ingasetyenziswa kuphela kwi-putty powder kunye ne-mortar. Kwi-glue engamanzi, ipeyinti kunye neemveliso zokuhlamba, kuya kubakho i-categorized event kwaye ayinakusetyenziswa.
Isasazeka ngokukhawulezaI-HPMCineendlela ezahlukeneyo zokusetyenziswa kwaye ingasetyenziswa kwi-putty powder, i-mortar, i-glue engamanzi, ipeyinti, kunye neemveliso zokuhlamba ngaphandle kokuphikiswa.
4. Indlela yokunyibilikisa
4-1. Thatha umlinganiselo ofunekayo wamanzi ashushu, uwafake kwisitya uze uwafudumeze ukuya kuthi ga kwi-80°C, uze wongeze kancinci le mveliso phantsi kokuxukuxa kancinci. I-cellulose iyadada phezu kwamanzi ekuqaleni, kodwa isasazeka kancinci kancinci ukuze yenze i-slurry efanayo. Isisombululo sipholisiwe ngelixa sixukuxa.
4-2. Okanye, fudumeza i-1/3 okanye i-2/3 yamanzi ashushu ukuya kuma-85°C, yongeza i-cellulose ukuze ufumane i-slurry yamanzi ashushu, uze wongeze amanzi abandayo aseleyo, uqhubeke uvuselela, uze upholise umxube ophumayo.
4-3. I-mesh ye-cellulose ilungile, kwaye ikhona njengamasuntswana amancinci ngamanye kumgubo oxutywe ngokulinganayo, kwaye iyanyibilika ngokukhawuleza xa idibana namanzi ukuze yenze i-viscosity efunekayo.
4-4. Yongeza i-cellulose kancinci nangokulinganayo kubushushu begumbi, kwaye uqhubeke uvuselela de kubekho isisombululo esicacileyo.
5. Zeziphi izinto ezichaphazela ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose?
5-1. Ukulingana kwe-cellulose ether HPMC
I-HPMC, i-methoxyl kunye ne-hydroxypropoxyl ezisabela ngokulinganayo zisasazwa ngokulinganayo, kwaye izinga lokugcina amanzi liphezulu.
5-2. Ubushushu bejeli yobushushu be-cellulose ether HPMC
Okukhona ubushushu bejeli yobushushu buphezulu, kokukhona izinga lokugcina amanzi liphezulu; kungenjalo, izinga lokugcina amanzi liphantsi.
5-3. I-Ether yeSellulose yeHPMC
Xa i-viscosity ye-HPMC isanda, izinga lokugcina amanzi nalo liyakhula; xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwenqanaba lokugcina amanzi kudla ngokuba buthathaka.
6.Ukongeza isixa se-cellulose ether HPMC
Ubungakanani obukhulu be-cellulose etherI-HPMCUkongeza, kokukhona izinga lokugcina amanzi liphezulu kwaye kokukhona isiphumo sokugcina amanzi singcono.
Kuluhlu lwe-0.25-0.6%, izinga lokugcina amanzi landa ngokukhawuleza ngokonyuka kwenani lokongezwa; xa inani lokongezwa landa ngakumbi, umkhwa wokwanda kwenani lokugcina amanzi wehla.
Ixesha leposi: Epreli-26-2024