Yintoni umahluko phakathi kwe-HPMC ene-S okanye engenayo?

1. I-HPMC yahlulwe ngohlobo olukhawulezileyo nohlobo lokusasazeka ngokukhawuleza.

Uhlobo lwe-HPMC olukhawulezayo lokusasazwa lunobumba u-S njengesimamva. I-Glyoxal kufuneka yongezwe ngexesha lenkqubo yemveliso.

Uhlobo lwe-HPMC olusasazeka ngokukhawuleza alufaki onobumba, njengokuthi “100000″ kuthetha “100000 viscosity esasazeka ngokukhawuleza ye-HPMC”.

2. Ukuba kukho okanye akukho S, iimpawu zahlukile

I-HPMC esasazeka ngokukhawuleza isasazeka ngokukhawuleza emanzini abandayo ize inyamalale emanzini. Ulwelo aluna-viscosity ngeli xesha kuba i-HPMC isasazeka kuphela emanzini kwaye ayinyibiliki ngokwenene. Emva kwemizuzu emibini, i-viscosity yolwelo iyanda kancinci kancinci, yenze ulwelo olucacileyo oluqinileyo. I-colloid etyebileyo.

I-HPMC ekhawulezileyo inokusasazwa ngokukhawuleza emanzini ashushu malunga nama-70°C. Xa ubushushu buhla bufikelela kubushushu obuthile, i-viscosity ibonakala kancinci de kube kwakheka i-colloid ecacileyo ethambileyo.

3. Ukuba u-S okanye ungenaye, injongo yahlukile

I-HPMC ekhawulezileyo ingasetyenziswa kuphela kwi-putty powder kunye ne-mortar. Kwi-glue engamanzi, iipeyinti kunye nezinto zokucoca, ii-clumps zinokwenzeka kwaye zingasetyenziswa.

I-HPMC esasazeka ngokukhawuleza ineendlela ezahlukeneyo zokusetyenziswa. Ingasetyenziselwa umgubo we-putty, i-mortar, i-glue engamanzi, ipeyinti, kunye nezinto zokucoca ngaphandle kokuphazamiseka.

indlela yokuchithwa

1. Thatha umlinganiselo ofunekayo wamanzi ashushu, uwafake kwisitya uze uwafudumeze ukuya kuthi ga kwi-80℃, uze wongeze kancinci le mveliso ngokuyixuba kancinci. I-cellulose iyadada phezu kwamanzi ekuqaleni, kodwa isasazeka kancinci kancinci ukuze yenze i-slurry efanayo. Pholisa isisombululo ngelixa uxuba.

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, uvuselele rhoqo, uze upholise umxube ophumayo.

3. I-Cellulose inomlinganiselo omncinci we-mesh kwaye ikhona njengamasuntswana amancinci kwi-powder exutywe ngokulinganayo. Iyanyibilika ngokukhawuleza xa ibekwe emanzini ukuze yenze i-viscosity efunekayo.

4. Yongeza i-cellulose kancinci kwaye ngokulinganayo kubushushu begumbi, uvuselela rhoqo de kube kuvela isisombululo esicacileyo.

Zeziphi izinto ezichaphazela ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose?

Ukugcinwa kwamanzi kweemveliso ze-hydroxypropyl methylcellulose HPMC ngokwazo kudla ngokuchaphazeleka zezi zinto zilandelayo:

1. Ukulingana kwe-cellulose ether HPMC

Amaqela e-HPMC methoxy kunye ne-hydroxypropoxy asabela ngokulinganayo asasazeke ngokulinganayo kwaye anokugcina amanzi amaninzi.

2. Ubushushu bejeli yobushushu be-cellulose ether HPMC

Okukhona ubushushu bejeli eqhuba ubushushu buphezulu, kokukhona izinga lokugcina amanzi liphezulu; ngokuchaseneyo, izinga lokugcina amanzi liphantsi.

3. Ukuqina kwe-cellulose ether HPMC

Xa i-viscosity ye-HPMC isanda, izinga lokugcina amanzi nalo liyakhula; xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwenqanaba lokugcina amanzi kudla ngokuba buthathaka.

Isixa sokongeza i-HPMC kwi-cellulose ether

Okukhona inani elikhulu le-cellulose ether HPMC longezwa, kokukhona izinga lokugcinwa kwamanzi liphezulu kwaye kokukhona isiphumo sokugcinwa kwamanzi singcono.

Kwinqanaba le-0.25-0.6%, izinga lokugcina amanzi liyanda ngokukhawuleza njengoko inani lokongezwa lisanda; xa inani lokongezwa lisanda ngakumbi, umkhwa wokwanda kwenqanaba lokugcina amanzi uyehla.