1. Kukho iintlobo ezininzi ze-hydroxypropyl methylcellulose HPMC, kwaye yintoni umahluko phakathi kokusetyenziswa kwazo?
Impendulo: I-Hydroxypropyl methylcellulose HPMC inokwahlulwa ngokohlobo olukhawulezileyo kunye nohlobo lwe-hot-melt.Iimveliso zohlobo olukhawulezayo zisasazeka ngokukhawuleza emanzini abandayo kwaye zinyamalale emanzini.Ngeli xesha, i-liquid ayinayo i-viscosity, kuba i-HPMC ihlakazekile kuphela emanzini, akukho ukunyibilika kwangempela.Emva kwemizuzu emi-2, i-viscosity yolwelo yanda ngokuthe ngcembe, isenza i-colloid ebonakalayo ebonakalayo.Iimveliso ezitshisayo ezitshisayo, xa zidibana namanzi abandayo, ziyakwazi ukusabalalisa ngokukhawuleza emanzini ashushu kwaye zinyamalale emanzini ashushu.Xa amaqondo obushushu ehla ukuya kwiqondo elithile lobushushu, i-viscosity ibonakala kancinane de i-viscous colloid ecacileyo yenziwe.Uhlobo lwe-hot-melt lunokusetyenziswa kuphela kwi-putty powder kunye nodaka.Kwiglue yolwelo kunye nepeyinti, i-clumping phenomenon iya kwenzeka kwaye ayinakusetyenziswa.Uhlobo olukhawulezileyo lunoluhlu olubanzi lwezicelo.Ingasetyenziselwa kwi-putty powder kunye nodaka, kunye neglue elulwelo kunye nepeyinti, ngaphandle kokuchasana.
2. Yintoni eyona njongo ye-hydroxypropyl methylcellulose (HPMC)?
A: I-HPMC isetyenziswa kakhulu kwizinto zokwakha, iingubo, iireyini zokwenziwa, iiseramikhi, amayeza, ukutya, impahla, ezolimo, izithambiso, icuba kunye namanye amashishini.I-HPMC inokohlulwa ibe: ibakala lokwakha, ibakala lokutya kunye nebakala lamayeza ngokwenjongo.Okwangoku, uninzi lweemveliso zasekhaya zikumgangatho wokwakha.Kwibakala lokwakha, inani le-putty powder likhulu kakhulu, malunga ne-90% isetyenziselwa i-putty powder, kwaye intsalela isetyenziselwa udaka lwesamente kunye neglue.
3. Ziziphi iindlela zokuchithwa kwe-hydroxypropyl methylcellulose HPMC?
Impendulo: Indlela yokuchithwa kwamanzi ashushu: Ekubeni i-HPMC inganyibiliki emanzini ashushu, i-HPMC inokusasazwa ngokufanayo emanzini ashushu kwinqanaba lokuqala, kwaye ikhutshwe ngokukhawuleza xa ipholile.Iindlela ezimbini eziqhelekileyo zichazwa ngolu hlobo lulandelayo:
1), yongeza i-1/3 okanye i-2/3 yomthamo ofunekayo wamanzi kwisitya, kwaye uyifudumeze ukuya kuma-70 ° C, ngokwendlela ye-1), usasaze i-HPMC, ulungiselele udaka lwamanzi ashushu;uze ungeze inani eliseleyo lamanzi abandayo kumanzi ashushu Kwi-slurry, umxube wawupholile emva kokuvuselela.
Indlela yokuxuba umgubo: Xuba i-HPMC yomgubo kunye nesixa esikhulu sezinye izinto ezinomgubo, xuba ngokucokisekileyo kunye nomxube, uze wongeze amanzi ukuze unyibilike, emva koko i-HPMC inokunyibilika ngeli xesha ngaphandle kokuhlanganisana, kuba kukho i-HPMC encinane kuphela kuyo yonke into. ikona encinci encinci.Umgubo uya kuchithwa ngokukhawuleza xa udibana namanzi.——Le ndlela isetyenziswa ngabavelisi be-putty kunye nodaka.[I-Hydroxypropyl methylcellulose (HPMC) isetyenziswa njenge-thickener kunye ne-agent egcina amanzi kwi-putty powder mortar.
2), faka ubungakanani obufunekayo bamanzi ashushu kwisikhongozeli, kwaye ufudumale ukuya kuma-70 ℃.I-hydroxypropyl methylcellulose yongezwa ngokuthe ngcembe ngokushukumisa okucothayo, ekuqaleni i-HPMC yadada phezu kwamanzi, kwaye ngokuthe ngcembe yenza i-slurry, eyapholiswa ngokuvuselela.
4. Indlela yokugweba umgangatho we-hydroxypropyl methylcellulose (HPMC) ngokulula kunye ne-intuitively?
Impendulo: (1) Umxhuzulane okhethekileyo: okukhona umkhulu umxhuzulane othile, kokukhona unzima ngakumbi.ezinkulu, ngokwesiqhelo kuba
(2) Ubumhlophe: Nangona ubumhlophe abunakugqiba ukuba i-HPMC kulula ukuyisebenzisa, kwaye ukuba i-agent emhlophe yongezwa kwinkqubo yokuvelisa, iya kuchaphazela umgangatho wayo.Nangona kunjalo, uninzi lweemveliso ezilungileyo zinobumhlophe obuhle.
(3) Ukulunga: Ukulunga kwe-HPMC ngokuqhelekileyo yi-80 mesh kunye ne-100 mesh, kunye ne-120 mesh ingaphantsi.Uninzi lwe-HPMC eveliswe eHebei yi-80 mesh.Okukhona ukucoleka, kokukhona kungcono ngokubanzi.
(4) Ukuhanjiswa: Faka i-hydroxypropyl methylcellulose (HPMC) emanzini ukwenza i-colloid ecacileyo, kwaye ukhangele ukuhanjiswa kwayo.Okukhona ugqithiso luphezulu, kokukhona lungcono, lubonisa ukuba kukho izinto ezinganyibilikiyo kancinci kwi.Ukungena kwe-reactors ezithe nkqo ngokuqhelekileyo kulungile, kwaye oko kwereactors okuthe tye kubi kakhulu, kodwa akunakutshiwo ukuba umgangatho weereactors ezithe nkqo ungcono kunolo lweereactor ezithe tye, kwaye kukho izinto ezininzi ezimisela umgangatho weemveliso.Umxholo we-hydroxypropyl kuwo uphezulu, kwaye umxholo we-hydroxypropyl uphezulu, ukugcinwa kwamanzi kungcono.
5. Ziziphi iimpawu eziphambili zezobugcisa ze-hydroxypropyl methylcellulose (HPMC)?
Impendulo: Umxholo we-Hydroxypropyl kunye ne-viscosity, abaninzi abasebenzisi bayayikhathalela ezi zikhombisi zimbini.Ukuphakama komxholo we-hydroxypropyl, ngcono ukugcinwa kwamanzi.Viscous, ukubamba amanzi, ngokwentelekiso (endaweni yokuba
6. Yintoni i-viscosity efanelekileyo ye-hydroxypropyl methylcellulose (HPMC)?
Impendulo: I-putty powder ngokuqhelekileyo yi-yuan eyi-100,000, kwaye udaka lufuna kakhulu, kwaye kulula ukuyisebenzisa kwi-yuan eyi-150,000.Ngaphezu koko, eyona ndima ibalulekileyo ye-HPMC kukugcina amanzi, kulandele ukujiya.Kwi-putty powder, ngokude nje ukugcinwa kwamanzi kulungile kwaye i-viscosity iphantsi (70,000-80,000), nayo inokwenzeka.Ngokuqinisekileyo, ukuba i-viscosity iphezulu, ukugcinwa kwamanzi okuhambelanayo kungcono.Xa i-viscosity idlula i-100,000, umphumo we-viscosity ekugcinweni kwamanzi ayikho kakhulu.Ngokuqinisekileyo) kwakhona kungcono, kwaye i-viscosity iphezulu, kwaye kungcono ukuyisebenzisa kwi-samente yodaka.
7. Ziziphi ezona zixhobo ziphambili ze-hydroxypropyl methylcellulose (HPMC)?
Impendulo: Izinto eziphambili ze-hydroxypropyl methylcellulose (HPMC): i-cotton ecocekileyo, i-methyl chloride, i-propylene oxide, ezinye izinto ezisetyenziswayo ziquka i-flake alkali, i-asidi, i-toluene, i-isopropanol, njl.
Ixesha lokuposa: Sep-21-2022