Ulwazi oluncinci malunga ne-cellulose ether

1 Ziziphi iindlela eziphambili zokusebenzisa i-cellulose ether HPMC?

I-HPMC isetyenziswa kakhulu kwi-construction mortar, ipeyinti esekwe emanzini, i-synthetic resin, ii-ceramics, amayeza, ukutya, ilaphu, izinto zokuthambisa, icuba, kunye neminye imimandla. Yahlulwe ngokwe-construction grade, i-food grade, i-pharmaceutical grade, i-PVC grade industrial grade kunye ne-daily chemical grade.

2 Zithini iindidi ze-cellulose?

Iiseli ezixhaphakileyo zezi: MC, HPMC, MHEC, CMC, HEC, EC

Phakathi kwazo, i-HEC kunye ne-CMC zisetyenziswa kakhulu kwiingubo ezisekelwe emanzini;

I-CMC ingasetyenziswa nakwizinto zodongwe, amasimi eoyile, ukutya kunye nezinye iindawo;

I-EC isetyenziswa kakhulu kwezonyango, kwi-electronic silver paste nakwezinye iindawo;

I-HPMC yahlulwe ngokweemfuno ezahlukeneyo kwaye isetyenziswa kwi-mortar, amayeza, ukutya, imboni ye-PVC, iimveliso zeekhemikhali zemihla ngemihla kunye neminye imboni.

3 Yintoni umahluko phakathi kwe-HPMC kunye ne-MHEC xa kusetyenziswa?

Iimpawu zeentlobo ezimbini ze-cellulose ziyafana ngokusisiseko, kodwa ukuzinza kobushushu obuphezulu be-MHEC kungcono, ingakumbi ehlotyeni xa ubushushu bodonga buphezulu, kwaye ukusebenza kokugcinwa kwamanzi kwe-MHEC kungcono kunokwe-HPMC phantsi kweemeko zobushushu obuphezulu.

4 Ungawujonga njani umgangatho we-HPMC ngokulula?

1) Nangona ubumhlophe bungenakukwazi ukumisela ukuba kulula na ukusebenzisa i-HPMC, kwaye ukuba kongezwa izinto zokwenza mhlophe kwinkqubo yemveliso, umgangatho uya kuchaphazeleka, kodwa uninzi lweemveliso ezilungileyo zimhlophe kakuhle, nto leyo enokwahlulelwa ngokucokisekileyo ngokwembonakalo.

2) Ukuhanjiswa kokukhanya: Emva kokunyibilikisa i-HPMC emanzini ukuze yenze i-colloid ecacileyo, jonga ukuhanjiswa kwayo kokukhanya. Okukhona ukuhanjiswa kokukhanya kungcono, kokukhona izinto ezinganyibilikiyo kakhulu, kwaye umgangatho ulungile.

Ukuba ufuna ukugweba ngokuchanekileyo umgangatho we-cellulose, eyona ndlela inokuthenjwa kukusebenzisa izixhobo zobungcali kwilebhu yobungcali ukuvavanya. Izalathisi eziphambili zokuvavanya ziquka i-viscosity, izinga lokugcina amanzi, kunye nomxholo wothuthu.

5 Indlela yokufumanisa i-viscosity ye-cellulose?

I-viscometer eqhelekileyo kwimarike yasekhaya ye-cellulose yi-NDJ, kodwa kwimarike yamazwe ngamazwe, abavelisi abahlukeneyo badla ngokusebenzisa iindlela ezahlukeneyo zokuvavanya i-viscosity. Ezo ziqhelekileyo yiBrookfeild RV, Hoppler, kwaye kukwakho nezisombululo ezahlukeneyo zokufumanisa, ezahlulwe zibe yi-1% isisombululo kunye ne-2%. Ii-viscometer ezahlukeneyo kunye neendlela ezahlukeneyo zokufumanisa zihlala zibangela umahluko wamaxesha amaninzi okanye amashumi amaninzi kwiziphumo ze-viscosity.

6 Yintoni umahluko phakathi kohlobo lwe-HPMC olukhawulezileyo nohlobo lwe-hot melt?

Iimveliso zeHPMC ezikhawulezileyo zibhekisa kwiimveliso ezisasazeka ngokukhawuleza emanzini abandayo, kodwa kufuneka kuqatshelwe ukuba ukusasazwa akuthethi ukunyibilika. Iimveliso ezikhawulezileyo ziphathwa nge-glyoxal phezu komhlaba kwaye zisasazwe emanzini abandayo, kodwa aziqali ukunyibilika ngoko nangoko. , ngoko ke i-viscosity ayiveliswa kwangoko emva kokusasazwa. Okukhona ubuninzi bonyango lomphezulu we-glyoxal bukhulu, kokukhona ukusasazwa kukhawuleza, kodwa okukhona i-viscosity icotha, kokukhona i-glyoxal incinci, kwaye ngokuchaseneyo.

I-7 compound cellulose kunye ne-modified cellulose

Ngoku kukho i-cellulose eguquliweyo kunye ne-cellulose edibeneyo eninzi kwimarike, ngoko ke yintoni ukuguqulwa kunye ne-compound?

Olu hlobo lwe-cellulose ludla ngokuba neempawu ezifana neze-cellulose yokuqala okanye luphucula ezinye zeempawu zalo, ezinje: ukungatyibiliki, ixesha elivulekileyo eliphuculweyo, indawo yokukrwela eyandisiweyo ukuphucula ulwakhiwo, njl. Nangona kunjalo, kufuneka kuqatshelwe ukuba iinkampani ezininzi zisebenzisa i-cellulose engabizi kakhulu eyingcolisayo ukuze kuncitshiswe iindleko ibizwa ngokuba yi-compound cellulose okanye i-modified cellulose. Njengomthengi, zama ukwahlulahlula kwaye ungalahlekiswa. Kungcono ukukhetha iimveliso ezinokuthenjwa kwiimveliso ezinkulu nakwiifektri ezinkulu.