Arrimaha Saameeya Soo saarista Viscosity-ga ee Hydroxypropyl Methylcellulose

Tusmada viscosity-ga eehydroxypropyl methylcellulosewaa tusmo aad muhiim u ah. Dheef-dhabarku ma matalo daahirnimada. Dheef-dhabarta cellulose HPMC waxay ku xiran tahay habka wax soo saarka. Deegaannada kala duwan ee isticmaalka waa inay doortaan cellulose HPMC oo leh dheef-dhabar kala duwan, ee maaha inta uu sareeyo dheef-dhabarta cellulose HPMC, ayaa ka sii fiican! Waxa saxda ah waa sax √

Xakamaynta Fiiqnaanta

1. Hydroxypropyl methylcellulose oo ah nuugid sare ma soo saari karto cellulose aad u sareysa oo keliya iyadoo la faakiyuumeynayo oo lagu beddelayo nitrogen. Guud ahaan, soo saarista cellulose-ka nuugid sare leh ee Shiinaha lama xakamayn karo. Si kastaba ha ahaatee, haddii qalab cabbira oksijiin raad ah lagu rakibi karo digsiga, soo saarista nuugid si macmal ah ayaa loo xakameyn karaa.

Isticmaalka wakiilada la xiriira

2. Intaa waxaa dheer, marka la eego xawaaraha beddelka ee nitrogen, isla markaana, aad bay u fududahay in la soo saaro alaabada viscosity-ga sare leh iyadoon loo eegin sida nidaamku u qabo hawo-celin. Dabcan, heerka polymerization-ka ee suufka la safeeyey sidoo kale waa muhiim. Haddii taasi shaqayn weydo, ku samee ururka hydrophobic. Waxaa jira wakiillo isku xidha gudaha oo arrintan la xiriira. Nooca wakiilka isku xidha ee la doorto wuxuu saameyn weyn ku leeyahay waxqabadka badeecada ugu dambeysa.

Waxyaabaha ku jira Hydroxypropyl

3. Ogsijiinta ku jirta fal-galka waxay horseeddaa burburka cellulose iyo hoos u dhaca miisaanka molecular-ka, laakiin oksijiinta hartay waa xaddidan tahay. Ma aha wax adag in la sameeyo viscosity sare ilaa inta molecules-ka jaban dib loo xidho. Si kastaba ha ahaatee, heerka dheregta biyuhu sidoo kale si dhow ayuu ula xiriiraa waxa ku jira hydroxypropyl. Warshadaha qaar ayaa kaliya doonaya inay yareeyaan kharashka iyo qiimaha, mana rabaan inay kordhiyaan waxa ku jira hydroxypropyl, sidaa darteed tayadu ma gaari karto heerka wax soo saarka shisheeye ee la midka ah.

arrimo kale

4. Heerka haysashada biyaha ee badeecaddu waxay xiriir weyn la leedahay hydroxypropyl, laakiin habka falcelinta oo dhan, waxay sidoo kale go'aamisaa heerka haysashada biyaha, saameynta alkaliyeynta, saamiga methyl chloride iyo propylene oxide, iyo isku-darka alkali. Saamiga biyaha iyo cudbiga la safeeyey wuxuu go'aamiyaa waxqabadka badeecada.