Ulwazi oluncane mayelana ne-cellulose ether

1 Yiziphi izindlela eziyinhloko zokusebenzisa i-cellulose ether HPMC?

I-HPMC isetshenziswa kabanzi edakeni lokwakha, upende olusekelwe emanzini, i-resin yokwenziwa, izinto zobumba, imithi, ukudla, izindwangu, izimonyo, ugwayi, kanye neminye imboni. Ihlukaniswe ngebanga lokwakha, ibanga lokudla, ibanga lemithi, ibanga lezimboni le-PVC kanye nebanga lamakhemikhali lansuku zonke.

2 Yiziphi izinhlobo ze-cellulose?

Ama-cellulose avamile yi-MC, HPMC, MHEC, CMC, HEC, EC

Phakathi kwazo, i-HEC ne-CMC zisetshenziswa kakhulu ekumbozweni okusekelwe emanzini;

I-CMC ingasetshenziswa nasezintweni zobumba, amasimu kawoyela, ukudla kanye neminye imikhakha;

I-EC isetshenziswa kakhulu kwezokwelapha, i-electronic silver paste kanye neminye imikhakha;

I-HPMC ihlukaniswe ngezincazelo ezahlukahlukene futhi isetshenziswa emasikweni, kwezokwelapha, ekudleni, embonini ye-PVC, emikhiqizweni yamakhemikhali yansuku zonke kanye nakwezinye izimboni.

3 Uyini umehluko phakathi kwe-HPMC ne-MHEC ekusetshenzisweni?

Izakhiwo zezinhlobo ezimbili ze-cellulose ziyafana ngokuyisisekelo, kodwa ukuzinza kwezinga lokushisa eliphezulu le-MHEC kungcono, ikakhulukazi ehlobo lapho izinga lokushisa lodonga liphezulu, futhi ukusebenza kokugcinwa kwamanzi kwe-MHEC kungcono kunokwe-HPMC ngaphansi kwezimo zokushisa eziphakeme.

4 Ungahlulela kanjani kalula ikhwalithi ye-HPMC?

1) Nakuba ubumhlophe bungenakunquma ukuthi i-HPMC kulula ukuyisebenzisa, futhi uma kufakwa izinto zokwenza mhlophe enqubweni yokukhiqiza, ikhwalithi izothinteka, kodwa iningi lemikhiqizo emihle inobumhlophe obuhle, okungahlulelwa ngokubukeka.

2) Ukudlulisa ukukhanya: Ngemva kokuncibilikisa i-HPMC emanzini ukuze kwakheke i-colloid esobala, bheka ukudlulisa kwayo ukukhanya. Uma ukudlulisa ukukhanya kungcono, kulapho izinto ezingancibiliki khona, futhi ikhwalithi ilungile.

Uma ufuna ukwahlulela ngokunembile ikhwalithi ye-cellulose, indlela ethembeke kakhulu ukusebenzisa imishini yobungcweti elabhorethri yobungcweti ukuze kuhlolwe. Izinkomba zokuhlola eziyinhloko zifaka phakathi i-viscosity, izinga lokugcina amanzi, kanye nokuqukethwe komlotha.

5 Indlela yokuthola i-viscosity ye-cellulose?

I-viscometer evamile emakethe yasekhaya ye-cellulose yi-NDJ, kodwa emakethe yamazwe ngamazwe, abakhiqizi abahlukene bavame ukusebenzisa izindlela ezahlukene zokuhlola i-viscosity. Ezivamile yi-Brookfeild RV, i-Hoppler, futhi kunezixazululo ezahlukene zokuthola, ezihlukaniswe ngesisombululo esingu-1% kanye nesisombululo esingu-2%. Ama-viscometer ahlukene kanye nezindlela ezahlukene zokuthola zivame ukuphumela emehluko wezikhathi eziningana noma ngisho nezikhathi eziningi emiphumeleni ye-viscosity.

6Uyini umehluko phakathi kohlobo lwe-HPMC olusheshayo nohlobo lwe-hot melt?

Imikhiqizo esheshayo ye-HPMC ibhekisela emikhiqizweni esakazeka ngokushesha emanzini abandayo, kodwa kumelwe kuqashelwe ukuthi ukuhlakazeka akusho ukuhlakazeka. Imikhiqizo esheshayo iphathwa nge-glyoxal ebusweni bese ihlakazwa emanzini abandayo, kodwa ayiqali ukuncibilika ngokushesha. , ngakho-ke i-viscosity ayikhiqizwa ngokushesha ngemva kokuhlakazeka. Uma inani lokwelashwa kobuso be-glyoxal likhulu, ukuhlakazeka kushesha, kodwa i-viscosity ihamba kancane, inani le-glyoxal lincane, futhi okuphambene nalokho.

I-cellulose ehlanganisiwe engu-7 kanye ne-cellulose eguquliwe

Manje sekukhona i-cellulose eguquliwe kanye ne-cellulose ehlanganisiwe emakethe, ngakho-ke kuyini ukuguqulwa kanye ne-compound?

Lolu hlobo lwe-cellulose luvame ukuba nezakhiwo i-cellulose yokuqala engenazo noma luthuthukisa ezinye zezakhiwo zalo, njenge: ukungasheleli, isikhathi sokuvula esithuthukisiwe, indawo ekhuphukile yokuklwebha ukuze kuthuthukiswe ukwakhiwa, njll. Kodwa-ke, kufanele kuqashelwe ukuthi izinkampani eziningi nazo zisebenzisa i-cellulose eshibhile eyixubayo ukuze kuncishiswe izindleko ibizwa ngokuthi i-compound cellulose noma i-modified cellulose. Njengomthengi, zama ukuhlukanisa futhi ungakhohliswa. Kungcono ukukhetha imikhiqizo ethembekile evela kumabhrendi amakhulu kanye namafektri amakhulu.