Habka Wax-soo-saarka Waji-Dareere ah ee Soo saarista Hydroxypropyl Methyl Cellulose (HPMC)

Hydroxypropyl methyl cellulose (HPMC) waa eter cellulose ah oo si ballaaran loogu isticmaalo codsiyada warshadaha iyo daawooyinka kala duwan sababtoo ah sifooyinka ugu fiican ee jirka iyo kiimikada. HPMC waxaa caadi ahaan lagu soo saaraa habab kala duwan, oo ay ku jiraan habka wax soo saarka dareeraha-wejiga.

Habka wax soo saarka dareeraha-wejiga waa habka fal-celinta kiimikaad kaas oo ku lug leh falcelinta methyl cellulose (MC) ee leh propylene oxide (PO) ka dibna leh propylene glycol (PG) xaaladaha qaarkood. Nidaamku wuxuu ku lug leeyahay tallaabooyinka soo socda:

1. Diyaarinta Methyl Cellulose (MC)

MC waxaa lagu helaa iyadoo lagu daaweeyo cellulose alkali ka dibna methylation with methyl chloride. Heerka beddelka (DS) ee MC ayaa go'aamisa hantidiisa waxaana lagu xakameyn karaa kala duwanaanshaha xaaladaha falcelinta.

2. Diyaarinta Propylene Oxide (PO)

PO waxaa lagu diyaariyaa oksaydheynta propylene iyadoo la isticmaalayo hawo ama oksijiin iyadoo ay jirto kiciye. Dareen-celinta waxaa lagu fuliyaa heerkul sare iyo cadaadis si loo hubiyo wax-soo-saarka sare ee PO.

3. Falcelinta MC ee PO

Dareen-celinta MC ee leh PO waxaa lagu fuliyaa joogitaanka kicinta iyo dareeraha sida toluene ama dichloromethane. Dareen-celintu waa heer-sare waxayna dhalisaa kuleyl, kaas oo ay tahay in la xakameeyo si looga fogaado fal-celinta cararka.

4. Diyaarinta Propylene Glycol (PG)

PG waxaa lagu diyaariyaa hydrolysis of propylene oxide iyadoo la isticmaalayo biyo ama aashito ku haboon ama kicinta saldhiga. Dareen-celinta waxaa lagu fuliyaa xaalado khafiif ah si loo helo wax-soo-saar sare oo PG ah.

5. Falcelinta MC-PO ee PG

Badeecada MC-PO ayaa markaa looga falceliyaa PG iyada oo ay jirto kiciye iyo dareere sida ethanol ama methanol. Dareen-celinta sidoo kale waa mid kulul oo waxay dhalisaa kuleyl, kaas oo ay tahay in la xakameeyo si looga fogaado falcelinta cararka.

6. 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 wax-soo-saarka dareeraha-wejiga wuxuu leeyahay faa'iidooyin dhowr ah marka loo eego hababka kale, oo ay ku jiraan wax-soo-saarka sare, kharash yar, iyo miisaan fudud. Dareen-celinta waxaa lagu samayn karaa hal weel, yaraynta baahida qalabka iyo hababka adag.

Si kastaba ha ahaatee, habka wax soo saarka dareeraha-wejiga ayaa sidoo kale leh qaar ka mid ah cilladaha. Dareen-celinta waxay dhalin kartaa kulayl, taas oo ay tahay in si taxadar leh loo xakameeyo si looga fogaado arrimaha badbaadada. Isticmaalka dareerayaasha waxay sidoo kale keeni karaan khataro deegaan iyo caafimaad, habka nadiifinta wuxuu noqon karaa waqti-qaadasho iyo kharash badan.

Gebogebadii, habka wax-soo-saarka dareeraha-wejiga ah waa hab si ballaaran loo isticmaalo soo saarista HPMC. Habka ayaa ku lug leh falcelinta MC ee leh PO iyo PG xaaladaha qaarkood, 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.