1. hygroscopicity
Carboxymethylcellulose sodium CMC ine mvura yakafanana yekunyura semamwe maglue anonyungudika nemvura.Humidity yaro inowedzera nekuwedzera kwehunyoro uye inoderera nekuwedzera kwekushisa.Kukwirira kweDS, ndiko kukura kwemwando wemhepo, uye chigadzirwa Kusimba kwekunyura kwemvura.Kana bhegi rakavhurwa uye rakaiswa mumhepo ine hunyoro hwepamusoro kwenguva yakati, hunyoro hwayo hunogona kusvika 20%.Apo mvura inenge iri 15%, fomu yehupfu yechigadzirwa haizoshanduki.Kana huwandu hwemvura hunosvika 20%, zvimwe zvimedu zvinoungana uye zvinonamatira kune mumwe nemumwe, zvichideredza fluidity yehupfu.CMC ichawedzera huremu mushure mekutora hunyoro, saka zvimwe zvigadzirwa zvisina kuvharwa zvinofanirwa kuiswa mumidziyo isina mhepo kana kuchengetwa munzvimbo yakaoma.
2. Carboxymethyl Cellulose Sodium CMC Yakanyungudutswa
Carboxymethylcellulose sodium CMC, semamwe mapolymer anonyungudika nemvura, inoratidza kuzvimba isati yanyungudika.Kana huwandu hukuru hwecarboxymethylcellulose sodium CMC mhinduro inoda kugadzirirwa, kana chidimbu chega chega chakazvimba zvakafanana, ipapo Chigadzirwa chinonyungudika nekukurumidza.Kana sampuli yakakandwa mumvura nokukurumidza uye inonamatira kuvharo, "ziso rehove" richaumbwa.Izvi zvinotevera zvinotsanangura nzira yekukurumidza kunyungudutsa CMC: zvishoma nezvishoma isa CMC mumvura pasi pepakati pekusimudzira;CMC inofanoparadzirwa nemvura-inonyungudika solvent (yakadai se ethanol, glycerin), uye wozowedzera zvishoma nezvishoma mvura pasi pepakati pekugadzirisa;Kana zvimwe zvidimbu zvehupfu zvinoda kuwedzerwa kune mhinduro, tanga wasanganisa zvinowedzera uye CMC powder, uye wobva wawedzera mvura kuti iparadze;kuitira kuti vashandisi varerukirwe, ipapo granule uye poda zvigadzirwa zvinotangwa.
3. Rheology yeSodium Carboxymethyl Cellulose CMC Solution
Sodium carboxymethyl cellulose CMC mhinduro isiri yeNewtonian fluid, inoratidza yakaderera viscosity pakumhanya kukuru, kureva kuti, nekuti viscosity kukosha kwe sodium carboxymethyl cellulose CMC kunoenderana nekuyera mamiriro, saka "inooneka viscosity" inoshandiswa kutsanangura yayo. nature.
Inoratidzwa pa rheological curve diagram: Mamiriro emvura isiri yeNewtonian ndeyekuti hukama huri pakati peshear rate (kutenderera kwekumhanya pa viscometer) neshear force (torque ye viscometer) haisi hukama hwemutsara, asi mutsara.
Carboxymethyl cellulose sodium CMC mhinduro ndeye pseudoplastic fluid.Pakuyera viscosity, iyo inokurumidza kukurumidza kutenderera, idiki iyo yakayerwa viscosity, iyo inonzi inonzi shear thinning effect.
4. Carboxymethyl Cellulose Sodium CMC Viscosity
1) Viscosity uye avhareji dhigirii yepolymerization
Iyo viscosity ye sodium carboxymethylcellulose CMC mhinduro inonyanya kuenderana neavhareji dhigirii yepolymerization yemaketani e cellulose anoumba chimiro.Pane hukama hunenge hwemutsara pakati pe viscosity uye avhareji dhigirii repolymerization.
2) Viscosity uye kuisa pfungwa
Hukama huri pakati pe viscosity uye kusangana kwemamwe marudzi e sodium carboxymethylcellulose CMC.Viscosity uye kuisa pfungwa kunenge logarithmic.Sodium carboxymethyl cellulose CMC mhinduro inogona kuburitsa yakakwira viscosity pakudzika kwakadzika, hunhu uhwu hunoita kuti CMC igone kushandiswa seyakanakisa thickener mukushandisa.
3) Viscosity uye tembiricha
Iyo viscosity ye carboxymethylcellulose sodium CMC aqueous solution inodzikira nekuwedzera kwekushisa, zvisinei nerudzi uye kuisa pfungwa, maitiro emhinduro viscosity uye tembiricha yehukama hukama hwakafanana.
4) Viscosity uye pH
Kana iyo pH iri 7-9, iyo viscosity yeCMC mhinduro inosvika pakukwirira kwayo uye yakagadzikana zvakanyanya.Iyo viscosity ye sodium carboxymethylpyramid haizochinji zvakanyanya mukati meiyo pH renji ye5-10.CMC inonyungudika nekukurumidza mumamiriro ealkaline kupfuura mumamiriro asina kwaakarerekera.Kana pH> 10, ichaita kuti CMC iderere uye kuderedza viscosity.Kana asidhi yawedzerwa kune mhinduro yeCMC, kugadzikana kwemhinduro kunodzikiswa nekuti iyo H+ iri mumhinduro inotsiva Na+ pacheni yemolecular.Mune yakasimba acid solution (pH = 3.0-4.0) semi-sol inotanga kuumba, iyo inoderedza viscosity yemhinduro.Kana pH <3.0, CMC inotanga kusanyungudika zvachose mumvura uye inoita CMC asidhi.
CMC ine dhigirii yakakwirira yekutsiva yakasimba muasidhi uye alkali kuramba kupfuura CMC ine yakaderera DS;CMC ine low viscosity yakasimba mu acid uye alkali resistance pane CMC ine high viscosity.
Nguva yekutumira: Jan-28-2023