Habka wax-soo-saarka alkaliin-ka-soo-saarka waa hab caadi ah oo lagu soo saaro hydroxypropyl methyl cellulose (HPMC). Habkani wuxuu ku lug leeyahay falcelinta cellulose leh sodium hydroxide (NaOH) ka dibna leh propylene oxide (PO) iyo methyl chloride (MC) ee xaaladaha qaarkood.
Habka immersion-ka alkaline ayaa faa'iido u leh soo saarista HPMC oo leh beddelaad heer sare ah (DS), kaas oo go'aaminaya sifooyinkeeda sida milanka, viscosity, iyo gelation. Habka waxa ku jira talaabooyinka soo socda:
- Diyaarinta Cellulose
Cellulose waxaa laga helaa ilo dabiici ah sida alwaax, suuf, ama walxo kale oo geedo ah. cellulose-ka ayaa marka hore la nadiifiyaa ka dibna lagu daaweeyaa NaOH si loo sameeyo sodium cellulose, taas oo ah dhexdhexaadiye firfircoon ee soo saarista HPMC.
- Falcelinta Sodium Cellulose ee Propylene Oxide (PO)
Sodium cellulose ayaa markaa la falcelisa PO iyada oo ay jirto kiciye sida tetramethylammonium hydroxide (TMAH) ama sodium hydroxide (NaOH) heerkulka sare iyo cadaadiska. Dareen-celinta waxay keentaa samaynta hydroxypropyl cellulose (HPC).
- Falcelinta HPC ee Methyl Chloride (MC)
HPC-ga ayaa dabadeed looga falceliyaa MC iyadoo ay jirto wax-qabad sida sodium hydroxide (NaOH) ama hydrochloric acid (HCl). Dareen-celinta waxay keentaa samaynta hydroxypropyl methyl cellulose (HPMC).
- Dhaqidda iyo qallajinta
Falcelinta ka dib, badeecada waxaa lagu dhaqaa biyo waxaana la qalajiyey si loo helo HPMC. Alaabta waxaa sida caadiga ah lagu nadiifiyaa iyadoo la isticmaalayo taxane ah sifeyn iyo tillaabo centrifugation si meesha looga saaro wixii wasakh ah.
Habka immersion-ka alkaline wuxuu leeyahay faa'iidooyin dhowr ah marka loo eego hababka kale, oo ay ku jiraan DS sare iyo nadiif, qiimo jaban, iyo miisaan fudud. Habka waxaa sidoo kale loo isticmaali karaa in lagu soo saaro HPMC oo leh sifooyin kala duwan iyadoo la bedelayo xaaladaha falcelinta sida heerkulka, cadaadiska, iyo xoogga.
Si kastaba ha ahaatee, habka ayaa sidoo kale leh qaar ka mid ah cilladaha. Isticmaalka NaOH iyo MC waxay keeni karaan badbaado iyo khataraha deegaanka, iyo habka wax soo saarku wuxuu noqon karaa waqti-qaadasho wuxuuna u baahan yahay xaddi badan oo tamar ah.
Gebogebadii, habka wax soo saarka immersion-ka alkaline waa hab si weyn loo isticmaalo soo saarista HPMC. Habka ayaa ku lug leh falcelinta cellulose leh NaOH, PO, iyo MC xaalado gaar ah, oo ay ku xigto nadiifinta iyo qalajinta. Iyadoo habka uu leeyahay qaar ka mid ah cillado, faa'iidooyinkiisa ayaa ka dhigaya doorashada caanka ah ee codsiyada warshadaha iyo daawooyinka.
Waqtiga boostada: Abriil-23-2023