Yethula mayelana nama-cellulose ethers

01. Ukusetshenziswa okuyinhloko kwe-cellulose ether HPMC?

I-HPMC isetshenziswa kabanzi ekwakheni udaka, upende osuselwe emanzini, i-synthetic resin, izitsha zobumba, imithi, ukudla, izindwangu, izimonyo, ugwayi, nezinye izimboni. Ihlukaniswe ngebanga lokwakha, ibanga lokudla, ibanga lezemithi, ibanga lezimboni le-PVC kanye nebanga lansuku zonke lamakhemikhali.

02. Yiziphi izigaba ze-cellulose?

Ama-cellulose ajwayelekile yi-MC, HPMC, MHEC, CMC, HEC, EC
Phakathi kwazo, i-HEC ne-CMC zisetshenziswa kakhulu emigqeni esekwe emanzini,
I-CMC ingasetshenziswa futhi kuma-ceramics, insimu kawoyela, ukudla neminye imikhakha
I-EC isetshenziswa kakhulu kwezokwelapha, i-electronic silver paste kanye neminye imikhakha
I-HPMC ihlukaniswe yaba imininingwane ehlukahlukene yodaka, umuthi, ukudla, imboni ye-PVC, imikhiqizo yansuku zonke yamakhemikhali nezinye izimboni.

03. Uyini umehluko phakathi kwe-HPMC ne-MHEC ekusetshenzisweni?

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

04. Ungamane uhlulele kanjani ikhwalithi ye-HPMC?

1) Nakuba ubumhlophe bungakwazi ukunquma ukuthi i-HPMC isebenziseka kalula yini, futhi uma ama-ejenti amhlophe engezwa enqubweni yokukhiqiza, ikhwalithi izothinteka, kodwa iningi lemikhiqizo emihle inobumhlophe obuhle, obungahlulelwa cishe ngokubukeka.
2) Ukudlulisa ukukhanya: Ngemva kokuncibilikisa i-HPMC emanzini ukuze kwakheke i-colloid esobala, bheka ukudlulisa ukukhanya kwayo. I-transmittance yokukhanya ingcono, into encane engancibiliki, futhi ikhwalithi yinhle uma kuqhathaniswa.
Uma ufuna ukwahlulela ngokunembile izinga le-cellulose, indlela enokwethenjelwa kakhulu ukusebenzisa imishini yobuchwepheshe elabhorethri yobuchwepheshe ukuze ihlolwe. Izinkomba zokuhlola eziyinhloko zifaka i-viscosity, izinga lokugcinwa kwamanzi, nokuqukethwe komlotha.

05. Indlela yokukala ii-viscosity ye-cellulose ether?

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, Hoppler, futhi kukhona nezixazululo ezihlukene zokuhlonza, ezihlukaniswe ngesixazululo esingu-1% kanye nesixazululo esingu-2%. Ama-viscometer ahlukene kanye nezindlela ezihlukene zokuhlonza ngokuvamile ziholela emehlukweni izikhathi ezimbalwa noma izikhathi eziningi emiphumeleni ye-viscosity.

06. Uyini umehluko phakathi kohlobo olusheshayo lwe-HPMC kanye nohlobo lwe-hot melt?

Imikhiqizo esheshayo ye-HPMC ibhekisela emikhiqizweni ehlakazeka ngokushesha emanzini abandayo, kodwa kufanele kuqashelwe ukuthi ukuhlakazeka akusho ukuhlakazeka. Imikhiqizo esheshayo iphathwa nge-glyoxal ebusweni futhi ihlakazwe emanzini abandayo, kodwa ayiqali ukuncibilika ngokushesha. , ngakho-ke i-viscosity ayikhiqizwa ngokushesha ngemva kokuhlakazeka. Inani elikhulu lokwelashwa kwe-glyoxal ebusweni, ukuhlakazeka okusheshayo, kodwa i-viscosity ihamba kancane, inani le-glyoxal liba lincane, futhi ngokuphambene nalokho.

07. I-cellulose ehlanganisiwe kanye ne-cellulose eguquliwe
Manje kunenqwaba ye-cellulose eguquliwe kanye ne-cellulose ehlanganisiwe emakethe, ngakho-ke yini ukuguqulwa kanye nenhlanganisela?

Lolu hlobo lwe-cellulose luvame ukuba nezakhiwo i-cellulose yokuqala engenazo noma ithuthukisa ezinye zezakhiwo zayo, njengokuthi: i-anti-slip, isikhathi esivulekile esithuthukisiwe, indawo ekhuphukile yokukhuhla ukuze kuthuthukiswe ukwakhiwa, njll. Nokho, kufanele kuqashelwe ukuthi izinkampani eziningi. sebenzisa futhi I-cellulose eshibhile eyonakalisayo ukuze kwehliswe izindleko ibizwa nge-compound cellulose noma i-modified cellulose.