IiTekhnoloji eziSiseko zeMveliso ezi-4 kunye neeFomula ze-HPMC, Ungaphoswa!

IHydroxypropyl methylcellulose (HPMC) yipolymer eguquguqukayo esetyenziswa kakhulu kumashishini ahlukeneyo, kubandakanya ulwakhiwo, amayeza, kunye namashishini okutya. I-HPMC iveliswa kusetyenziswa ubuchwephesha bemveliso eyahlukeneyo kunye nemixube, ngokuxhomekeke kusetyenziso olucetywayo. Kweli nqaku, siza kuphonononga iitekhnoloji ezine ezisisiseko zemveliso kunye neefomula ze-HPMC ongafanele uziphose.

1. Itekhnoloji ye-Etherification Tekhnoloji ye-etherification yeyona teknoloji ixhaphakileyo yemveliso ye-HPMC. Kule nkqubo, i-cellulose iphathwa nge-alkali, njenge-sodium hydroxide, ukwenza i-alkali cellulose. I-alkali cellulose iphinda ithathwe kunye nepropylene oxide kunye ne-methyl chloride ukwenza i-HPMC. Iqondo lokuthatha indawo (DS) ye-HPMC inokulawulwa ngokulungelelanisa umlinganiselo wepropylene oxide kwi-methyl chloride ngexesha lokusabela.

Ifomula ye-HPMC eveliswe kusetyenziswa ubuchwepheshe be-etherification yile:

Iselulosi + iAlkali → Iselulosi yeAlkali Iselulosi yeAlkali + Iselulosi yePropylene Oxide + Methyl Chloride → HPMC

2. Iteknoloji yokutshiza iTekhnoloji yokutshiza iteknoloji yemveliso ephucukileyo ye-HPMC. Kule nkqubo, i-cellulose ichithwa kwisisombululo se-alkali kwaye emva koko iphendule ngepropylene oxide kunye ne-methyl chloride. Isiphumo sesisombululo se-HPMC sitshizwa somisiwe ukuvelisa umgubo we-HPMC.

Ifomula ye-HPMC eveliswe kusetyenziswa itekhnoloji yokumisa isitshizi yile:

Iselulose + iAlkali → iAlkali Cellulose Iselulosi yeAlkali + Iselulosi yePropylene + Methyl Chloride → Isisombululo seHPMC Isisombululo seHPMC + Isitshizi Sokomisa → Umgubo weHPMC

3. Ukumiswa kweTekhnoloji yePolymerization Itekhnoloji yokumiswa kwepolymerization yenye itekhnoloji yemveliso ye-HPMC. Kule nkqubo, i-cellulose inqunyanyiswa kwi-solvent kwaye emva koko iphendule ngepropylene oxide kunye ne-methyl chloride phambi kwe-polymerization initiator ukwenza i-HPMC.

Ifomula ye-HPMC eveliswe kusetyenziswa itekhnoloji yokumiswa kwepolymerization yile:

Iselulosi + ukunyibilika + kwePolymerization Initiator → Ukumiswa kweCellulose Ukunqunyanyiswa kweSelulosi + Propylene Oxide + Methyl Chloride → HPMC

4. I-Solution Polymerization Technology Itekhnoloji yesisombululo sepolymerization bubuchwephesha obutsha bemveliso ye-HPMC. Kule nkqubo, i-cellulose inyibilika kwi-solvent kwaye emva koko iphendule ngepropylene oxide kunye ne-methyl chloride phambi kwe-polymerization initiator ukwenza i-HPMC.

Ifomula ye-HPMC eveliswe kusetyenziswa itekhnoloji yesisombululo sepolymerization yile:

iCellulose + Solvent + Polymerization Initiator → iCellulose Solution ICellulose Solution + Propylene Oxide + Methyl Chloride → HPMC

Ukuqukumbela, i-HPMC yipolymer eguquguqukayo eveliswa kusetyenziswa ubuchwephesha bemveliso eyahlukeneyo kunye nokwakheka, kuxhomekeke kwisicelo esicetywayo. Iteknoloji ezine ezisisiseko zemveliso kunye neefomula ze-HPMC ziquka iteknoloji ye-etherification, iteknoloji yokutshiza, iteknoloji yokumisa i-polymerization, kunye nobuchwepheshe besisombululo se-polymerization. Ukuqonda iteknoloji yemveliso kunye nefomula ye-HPMC inokunceda abavelisi bakhethe imveliso ye-HPMC efanelekileyo kwizicelo zabo ezithile.