Ma taqaanaa hydroxypropyl methylcellulose?

Hydroxypropyl methylcellulose waxaa si weyn loogu isticmaalaa warshadaha dhismaha. Maanta, waxaan soo bandhigi doonaa habka kala dirida hydroxypropyl methylcellulose iyo sida loo xukumo tayada hydroxypropyl methylcellulose.

Habka kala dirida hydroxypropyl methylcellulose:

Dhammaan moodooyinka waxaa lagu dari karaa walxaha iyadoo la isku darayo qalalan;

Marka ay u baahan tahay in si toos ah loogu daro heerkulka caadiga ah ee dareeraha aqueous, waxa fiican in la isticmaalo nooca kala firidhsan biyaha qabow, oo waxay ku dhumu kartaa 10-90 daqiiqo gudahood ka dib marka lagu daro;

Ka dib markaad walaaqdo oo ku kala firdhiso biyo kulul nooca caadiga ah, ku dar biyo qabow oo walaaq si aad u milmaan;

Haddii ay jirto agglomeration iyo dahaarka inta lagu jiro kala diri, waxaa sababa walaaqaya ku filnayn ama ku darto si toos ah biyo qabow profiles caadiga ah. Waqtigaan, waa in si degdeg ah loo walaaqaa;

Haddii xumbo ay soo baxdo inta lagu jiro kala diris, waxaa lagu dayn karaa inay istaagaan 2-12 saacadood (oo lagu go'aamiyo sida ay isku dhafan tahay xalka) ama laga saaro daad-gureynta, cadaadiska, iwm, iyo qadar ku habboon oo ah foamer ayaa sidoo kale lagu dari karaa.

Sida loo xukumo tayada hydroxypropyl methylcellulose si fudud oo dareen leh

Caddaan: Marka loo eego cadaanka, lama go'aamin karo in HPMC loo isticmaali karo si caadi ah, iyo haddii walxaha caddeynta lagu daro habka wax soo saarka, waxay sidoo kale saameyn doontaa tayada. Si kastaba ha ahaatee, alaabooyinka leh caddaan wanaagsan ayaa inta badan wanaagsan.

Wanaag: HPMC guud ahaan waa 80 mesh, 100 mesh, 120 mesh, kan ugu wanagsan ayaa wanaagsan.

Gudbinta: geli HPMC biyaha si ay u sameeyaan kolloid hufan, oo u fiirso gudbintiisa. Inta badan gudbinta, waxaa yaraada walxaha aan milmi karin ee biyaha. Guud ahaan, gudbintu way ku fiican tahay reactors toosan iyo reactors jiifka. Way ka sii daran tahay reactor-ka toosan, laakiin ma sharaxi karo in tayada sheyga uu soo saaro reactor-ka toosan uu ka fiican yahay reactor-ka tooska ah.

Cufis-jiidad gaar ah: Guud ahaan marka loo hadlo, sababtoo ah maadada hydroxypropyl ee sarreeya, saamaynta xajinta biyaha ayaa wanaagsan.