Hydroxypropyl methyl seluplose, Ngaba uyazi?

1.I-HPMCyahlulwe yohlobo kwangoko kunye nohlobo lokusasazeka ngokukhawuleza.

Uhlobo lwe-HPMC ngokufihlakeleyo luhambelana nonobumba u-S, kwaye i-GYSOxal kufuneka yongezwe ngexesha lenkqubo yemveliso.

Uhlobo lwe-HPMC kwangoko alongezi naziphi na iileta, ezinje nge "100000" lithetha "i-100000 viscofity.

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

Ukusasaza ngokukhawuleza i-HPMC isasaza ngokukhawuleza xa idibana namanzi abandayo kwaye inyamalale emanzini. Ngeli xesha, ulwelo alunamfanekiso, kuba i-HPMC ichithwa njengamanzi ngaphandle kokupheliswa kokwenyani. Emva kwemizuzu emibini, i-viscosity ye-ulwelo ngokuthe ngcembe inyuka, yenza i-vick ebonakalayo ye-colloid.

I-HPMC ngokukhawuleza ingasasazwa ngokukhawuleza emanzini ashushu malunga nama-70 ° C. Xa iqondo lobushushu liye kwehla kubushushu obuthile, i-viscofity iya kuvela kancinci de kube kumiselwa i-collous ebonakalayo.

3.Ngaphandle okanye ngaphandle kwe-S, injongo yahlukile

I-HPMC ye-HPMC inokusetyenziswa kuphela kwi-pody powder nodaka. Kwiglue yeglue, ipeyinti kunye nokuhlamba iimveliso, kuya kubakho i-phenomenon yeqela kwaye ayinakusetyenziswa.

Isasazeka ngokukhawulezaI-HPMCUnoluhlu olubanzi lwezicelo kwaye unokusetyenziswa kwi-pople powder, udaka, i-glue engamanzi, ipeyinti, kunye nokuhlamba iimveliso ngaphandle kokuphikisana.

Iphepha le-4.DISELELSELS

I-4-1. Thatha inani elifunekayo lamanzi ashushu, yibeke kwisitya kwaye ushiyiwe ngaphezulu kwe-80 ° C, kwaye ngokuthe ngcembe ukongeza le mveliso phantsi kwemveliso ehamba kancinci. I-seluplose idadayo kumphezulu wamanzi ekuqaleni, kodwa ngokuthe ngcembe isasazeka inyanzelise iyunifomu. Isisombululo sapholwa xa sikhuthaza.

4-2. Ngenye indlela, ubushushu 1/3 okanye 2/3 yamanzi ashushu ngaphezulu kwe-85 ° C, ukongeza isellulose ukufumana amanzi ashushu, emva koko wongeza umxube osisiphumo.

4-3. I-mesh ye-selsese ihle, kwaye iphakame njengamasuntswana amancinci amancinci kumgubo ovuselelekileyo, kwaye ayinyibiliki ngokukhawuleza xa edibana namanzi ukwenza i-viscofity efunekayo.

4-4. Ngokuthe ngcembe kwaye ngokongeza i-seluplose kubushushu begumbi, kwaye uqhubeke ushukumisa de kusenziwa isisombululo esibonakalayo.

5.Intoni izinto ezichaphazela ukugcinwa kwamanzi kwe-hydroxypropy ye-methyl selliese?

I-5-1. I-SelerUlose Ether HPMC HOMOGENIT

Ngokucacileyo i-HPMC, i-MacxGyl kunye ne-hydroxypropoxyl zisasazwe ngokulinganayo, kwaye inqanaba lokugcina amanzi liphezulu.

5-2. I-Selerselese Ether HPMC ye-gem

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

5-3. I-SelerUse Ether HPMC Viscofity

Xa i-vickosity ye-HPMC inyuka, iqondo lokugcina amanzi liyanda; Xa i-viscosity ifikelela kwinqanaba elithile, ukwanda kwemilinganiselo yokugcina amanzi ethambile.

Isixa se-6.dding se-sellulose ether hpmc

Inqanaba elikhulu kwi-selsulose etherI-HPMCYongezwe, iphakamise iqondo lokugcina amanzi kunye nokulungileyo komsebenzi wokugcinwa kwamanzi.

Kuluhlu lwe-0.25-0.6%, izinga lokugcina amanzi linyuke ngokukhawuleza ngokunyuka kwenani elongeziweyo; Xa isixa esongezwa sinyuke ngakumbi, ukunyusa imeko yeqondo lokugcina amanzi linciphile.