Ungayikhetha njani i-hydroxypropyl methylceltulose?

Yintoni umahluko phakathihydroxypropyl methylcelceluplose(I-HPMC) nge okanye ngaphandle kwezi?

I-1. I-HPMC yahlulahlulwe yanguhlobo lwethutyana kunye nohlobo lokusasaza ngokukhawuleza

I-HPMC ekhawulezayo isasaza i-HEATE

Uhlobo lwe-HPMC kwangoko alongezi naziphi na iileta, ezinje nge "100000" yi "viscosity ye-viscosity ye-vissity ye-HEPMC".

2. Nge okanye ngaphandle okanye ngaphandle kwe-S, iimpawu zahlukile

Ukusasaza ngokukhawuleza i-HPMC isasaza ngokukhawuleza kumanzi abandayo kwaye inyamalale emanzini. Ngeli xesha, ulwelo alunamfanekiso, kuba i-HPMC ichithwa njengamanzi, kwaye akukho gwenxa. Emva kwemizuzu emibini, i-viscosity ye-ulwelo ngokuthe ngcembe inyuka, yenza ulwelo olunencamathiselo. I-colloid ye-colloid.

I-HPMC yephanyazo inokusasaza ngokukhawuleza emanzini ashushu malunga nama-70 ° C. Xa iqondo lobushushu liye kwehla kubushushu obuthile, i-vickosity ivela kancinci de i-vicous engabonakaliyo yenziwa.

3. Nge okanye ngaphandle kwe-S, injongo yahlukile

I-HPMC ye-HPMC inokusetyenziswa kuphela kwi-pody powder nodaka. Kwibhotile yolwelo, iingubo kunye nokucoca iimpahla, ukungcola kuyakwenzeka kwaye akunakusetyenziswa.

Ukusasaza ngokukhawuleza i-HPMC kunoluhlu olubanzi lwezicelo. Ingasetyenziselwa umgubo ongenayo, udaka, i-glue ye-glue, ipeyinti, kunye nokuhlamba iimveliso ngaphandle kokuphikisana.

Indlela yokuphelisa

1. Thatha inani elifunekayo lamanzi ashushu, yibeke kwisitya kwaye usitshise ngaphezulu kwe-80 ° C, kwaye ngokuthe ngcembe ukongeza le mveliso phantsi kwemveliso ehamba kancinci. I-seluplose idada emanzini ekuqaleni, kodwa ngokuthe ngcembe isasazeka inyanzelise iyunifomu. Pholisa isisombululo ngokushukumisa.

2. Okanye ubushushu 1/3 okanye i-2/3 yamanzi ashushu ngaphezulu kwe-85 ° C, ukongeza isellulose ukufumana amanzi ashushu, emva koko wongeza umxube ophumeleleyo.

3. I-Selelose inenombolo entle ye-mesh, kwaye ikhona njengenxalenye encinci yomgubo onomdla, kwaye inyibilike ngokukhawuleza xa idibana namanzi ukwenza i-viscofity efunekayo.

4. Yongeza isellulose kancinci kwaye ngokulinganayo kubushushu begumbi, kwaye uqhubeke nokuvuselela ngexesha longeziweyo de kusenziwa isisombululo esibonakalayo.

Zeziphi izinto ezichaphazela ukugcinwa kwamanzi kwe-hydroxlypropyl methylcelcelcelgulose?

Ukugcinwa kwamanzi kwi-hydroxypropyl methylcelcelsulose yemveliso ye-HPMC ngokwayo ihlala ichaphazeleka kwezi zinto zilandelayo:

I-1. I-Selese I-ETER HPMC HOMOGINENIT

I-HPMC efana ne-HPMC inolwabiwo-mali lwe-AFMORMY kunye ne-hydroxypropoxy namaqela aphezulu kunye nokugcinwa kwamanzi.

I-2. I-Telupelose Ether HPMC yeqondo lokushisa i-gel

Ukuphakama kweqondo lobushushu be-thermal, ukuphakamisa inqanaba lokugcina amanzi; Ngaphandle koko, iphantsi inqanaba lokugcina amanzi.

I-3. I-Telupelose Ether HPMC Viscofity

Xa i-vickosity ye-HPMC inyuka, iqondo lokugcina amanzi liyanda; Xa i-viscosity ifikelela kwinqanaba elithile, ukwanda kwenqanaba lokugcina amanzi lithanda ukuba nobulali.

I-SelerUse Ether HPMC yongeno

Ixabiso elikhulu lesongezwe i-selsulose ether HPMC, iphakamise iqondo lokugcina amanzi kunye nokungcono komsebenzi wokugcinwa kwamanzi.

Kuluhlu lwe-0.25-0.6%, izinga lokugcina amanzi linyusa ngokukhawuleza ngokunyuka kwenani elongeziweyo; Xa ukongezwa kongezo, ukwanda kwenqanaba lokugcina amanzi kuyahamba kancinci.