Udidi lwe-Cellulose Ether
I-Cellulose ether ligama eliqhelekileyo loluhlu lweemveliso eziveliswa yi-reaction ye-alkali cellulose kunye ne-etherifying agent phantsi kweemeko ezithile. Xa i-alkali cellulose ithathelwa indawo zii-etherifying agents ezahlukeneyo, kuya kufunyanwa ii-ethers ezahlukeneyo ze-cellulose.
Ngokweempawu ze-ionization zezinto ezithatha indawo, ii-cellulose ethers zinokwahlulwa zibe ziindidi ezimbini: i-ionic (njenge-carboxymethyl cellulose) kunye ne-nonionic (njenge-methyl cellulose).
Ngokwendlela yokutshintsha, i-cellulose ether inokwahlulwa ibe yi-monoether (njenge-methyl cellulose) kunye ne-mixed ether (njenge-hydroxypropyl methyl cellulose).
Ngokweendlela ezahlukeneyo zokunyibilika, inokwahlulwahlulwa ibe kukunyibilika kwamanzi (njenge-hydroxyethyl cellulose) kunye nokunyibilika kwe-organic solvent (njenge-ethyl cellulose).
Ii-ether ze-cellulose ezinyibilikayo emanzini ezisetyenziswa kwiimortars ezixutywe ngomileyo zahlulwe zibe zii-ether ze-cellulose ezinyibilikayo ngoko nangoko kunye nee-ether ze-cellulose ezinyibilikayo eziphathwa ngokulibaziseka.
Ziphi umahluko wazo? Kwaye ungawucwangcisa njani kakuhle ube yisisombululo samanzi se-2% sokuvavanya i-viscosity?
Yintoni unyango lomphezulu?
Isiphumo kwi-cellulose ether?
Ekuqaleni
Unyango lomphezulu yindlela yokwenza umaleko womphezulu ngobuchule phezu komphezulu wesixhobo esisisiseko esineempawu zoomatshini, zomzimba nezekhemikhali ezahlukileyo kwezo zesiseko.
Injongo yonyango lomphezulu we-cellulose ether kukulibazisa ixesha lokudibanisa i-cellulose ether namanzi ukuhlangabezana neemfuno zokutyeba kancinci kwezinye iimortars zepeyinti, kunye nokwandisa ukumelana nokugqwala kwe-cellulose ether kunye nokuphucula uzinzo lokugcina.
Umahluko xa amanzi abandayo elungiselelwe isisombululo samanzi se-2%:
I-cellulose ether ecociweyo kumphezulu ingasasazeka ngokukhawuleza emanzini abandayo kwaye akulula ukuyihlanganisa ngenxa yokuqina kwayo okucothayo;
I-cellulose ether ngaphandle kokulungiswa komphezulu, ngenxa yokuqina kwayo okukhawulezayo, iya kuba krakra ngaphambi kokuba isasazeke ngokupheleleyo emanzini abandayo, kwaye ithambekele ekuhlanganeni.
Ungayicwangcisa njani i-cellulose ether engaphathwanga ngumphezulu?
1. Okokuqala faka inani elithile le-cellulose ether engaphathwanga ngumphezulu;
2. Emva koko yongeza amanzi ashushu kumaqondo obushushu amalunga nama-80 degrees Celsius, ubunzima buyi-1/3 yevolumu yamanzi efunekayo, ukuze idumbe kwaye isasazeke ngokupheleleyo;
3. Okulandelayo, galela kancinci amanzi abandayo, ubunzima buziinxalenye ezimbini kwezintathu zamanzi aseleyo afunekayo, qhubeka uvuselela ukuze anamathele kancinci, kwaye akuyi kubakho ukuhlangana;
4. Okokugqibela, phantsi kobunzima obulinganayo, yifake kwindawo yokuhlambela amanzi enobushushu obungaguqukiyo de ubushushu behle bufikelele kuma-20 degrees Celsius, uze emva koko uvavanyo lwe-viscosity lungenziwa!
Ixesha lokuthumela: Feb-02-2023