Yazisa malunga ne-cellulose ethers

01. Usetyenziso oluphambili lwe-cellulose ether HPMC?

I-HPMC isetyenziswa ngokubanzi kudaka lolwakhiwo, ipeyinti esekwe emanzini, i-resin yokwenziwa, iiseramikhi, amayeza, ukutya, impahla, izinto zokuthambisa, icuba, kunye namanye amashishini. Yahlulwe kwibakala lokwakha, ibakala lokutya, ibakala lamayeza, ibakala loshishino lwePVC kunye nebakala lemichiza lemihla ngemihla.

02. Zeziphi iindidi zeeselulosi?

Iiselulosi eziqhelekileyo zi-MC, HPMC, MHEC, CMC, HEC, EC
Phakathi kwazo, i-HEC kunye ne-CMC zisetyenziswa kakhulu kwiingubo ezisekelwe emanzini,
I-CMC ingasetyenziswa kwi-ceramics, intsimi yeoli, ukutya kunye nezinye iindawo
I-EC isetyenziswa kakhulu kumayeza, intlama yesilivere ye-elektroniki kunye nezinye iindawo
HPMC yahlulwe yaba iinkcukacha ezahlukeneyo ngodaka, iyeza, ukutya, ishishini PVC, iimveliso zemichiza mihla kunye namanye amashishini

03. Uthini umahluko phakathi kwe-HPMC kunye ne-MHEC kwisicelo?

Iipropati zeentlobo ezimbini ze-cellulose zifana ngokusisiseko, kodwa ukuzinza kweqondo lokushisa eliphezulu kwe-MHEC kubhetele, ngakumbi ehlotyeni xa ubushushu bodonga buphezulu, kwaye ukusebenza kokugcinwa kwamanzi kwe-MHEC kungcono kune-HPMC phantsi kweemeko eziphezulu zokushisa. .

04. Ungawugweba njani ngokulula umgangatho we-HPMC?

I-1) Nangona ubumhlophe bungenako ukugqiba ukuba i-HPMC ilula ukuyisebenzisa, kwaye ukuba ii-agent ezimhlophe zongezwa kwinkqubo yokuvelisa, umgangatho uya kuchaphazeleka, kodwa ininzi yeemveliso ezilungileyo zinobumhlophe obuhle, obunokuthi bugwetywe ngokukhawuleza kwimbonakalo.
2) Ukuhanjiswa kokukhanya: Emva kokunyibilikisa i-HPMC emanzini ukwenza i-colloid ebonakalayo, jonga ukukhanya kwayo. Okukhona ukuhanjiswa kokukhanya, kokukhona kukho into enganyibilikiyo encinci, kwaye nomgangatho ulungile.
Ukuba ufuna ukugweba ngokuchanekileyo umgangatho we-cellulose, eyona ndlela ithembekileyo kukusebenzisa izixhobo zobuchwephesha kwibhubhoratri yobugcisa yokuvavanya. Iimpawu eziphambili zokuvavanya ziquka i-viscosity, izinga lokugcinwa kwamanzi, kunye nomxholo womlotha.

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

I-viscometer eqhelekileyo kwimarike yasekhaya ye-cellulose yi-NDJ, kodwa kwiimarike zamazwe ngamazwe, abavelisi abahlukeneyo bahlala besebenzisa iindlela ezahlukeneyo zokuvavanya i-viscosity. Ezona ziqhelekileyo Brookfeild RV, Hoppler, kwaye kukho kwakhona izisombululo ezahlukeneyo zokubona, ezahlulwe zibe 1% isisombululo kunye 2% isisombululo. Ii-viscometers ezahlukeneyo kunye neendlela ezahlukeneyo zokubona zihlala zikhokelela kumahluko wamaxesha amaninzi okanye amaxesha amaninzi kwiziphumo ze-viscosity.

06. Uthini umahluko phakathi kohlobo olukhawulezileyo lwe-HPMC kunye nodidi olunyibilikayo olushushu?

Iimveliso ezikhawulezileyo ze-HPMC zibhekisa kwiimveliso ezithi zisasazeke ngokukhawuleza emanzini abandayo, kodwa kufuneka kuqatshelwe ukuba ukusasazwa akuthethi ukupheliswa. Iimveliso ezikhawulezayo ziphathwa nge-glyoxal phezu komhlaba kwaye zihlakazwe emanzini abandayo, kodwa aziqali ukuchithwa ngokukhawuleza. , ngoko i-viscosity ayiveliswanga ngokukhawuleza emva kokusasazeka. Ubuninzi bonyango lwe-glyoxal, ukusabalalisa ngokukhawuleza, kodwa ukucotha kwe-viscosity, encinci ye-glyoxal, kunye ne-vice versa.

07. I-cellulose edibeneyo kunye ne-cellulose ehlaziyiweyo
Ngoku kukho i-cellulose eninzi eguquliweyo kunye ne-cellulose edibeneyo kwimarike, ke yintoni ukuguqulwa kunye ne-compound?

Olu hlobo lwe-cellulose luhlala luneepropati ezingenayo i-cellulose yokuqala okanye iphucula ezinye zeempawu zayo, ezifana ne-anti-slip, ixesha elivulekileyo eliphuculweyo, ukunyuka kwendawo yokukrazula ukuphucula ukwakhiwa, njl. Nangona kunjalo, kufuneka kuqatshelwe ukuba iinkampani ezininzi. Kwakhona sebenzisa I-cellulose exabiso eliphantsi eyingcolisayo ukuze kucuthwe iindleko ibizwa ngokuba yi-compound cellulose okanye i-cellulose elungisiweyo.