Ekubunjweni kwe-powder mortar eyomileyo, i-methyl cellulose yimali eyongezelelweyo ephantsi, kodwa inesongezo esibalulekileyo esinokuphucula kakhulu ukuxuba kunye nokwakhiwa kodaka.Ukuyibeka ngokulula, phantse zonke iipropati zokuxuba ezimanzi zodaka ezinokubonwa ngeso lenyama zibonelelwa nge-cellulose ether.Yinto ephuma kwi-cellulose efunyenwe ngokusebenzisa i-cellulose evela kwiplanga kunye nekotoni, isabela nge-caustic soda, kwaye ifake i-etherifying agent etherifying.
Iintlobo zeMethyl Cellulose Ether
A.IHydroxypropyl methylcellulose (HPMC) yenziwe ikakhulu ngomqhaphu osulungekisiweyo kakhulu njengemathiriyeli ekrwada, efakwa i-etherified ngokukodwa phantsi kweemeko zealkaline.
B.I-Hydroxyethyl methyl cellulose (HEMC), i-ether ye-cellulose engeyona i-ionic, i-powder emhlophe, engenavumba kwaye ayinambitheki.
C.IHydroxyethylcellulose (HEC) yi-non-ionic surfactant, imhlophe ngenkangeleko, ayinavumba kwaye ayinancasa kwaye ingumgubo ohamba lula.
Ezi zingentla ziyi-non-ionic cellulose ethers, kunye ne-ionic cellulose ethers (ezifana ne-carboxymethyl cellulose (CMC)).
Ngexesha lokusetyenziswa kodaka lomgubo owomileyo, ngenxa yokuba i-ionic cellulose (i-CMC) ayizinzile phambi kwe-calcium ion, ayifane isetyenziswe kwiinkqubo ze-inorganic gelling kunye nesamente kunye ne-slaked lime njengezinto zokufaka isamente.Kwezinye iindawo eTshayina, ezinye iipuphu zodonga lwangaphakathi zicutshungulwe ngestatshi esilungisiweyo njengesona sixhobo siphambili sesamente kunye nomgubo weShuangfei njengesizalisi sisebenzisa i-CMC njengento etyebisayo, kodwa ngenxa yokuba le mveliso ithanda ukungunda kwaye ayinyangeki ngamanzi, iyacinywa ngokuthe ngcembe. ngemarike .Okwangoku, i-ether cellulose esetyenziswa kakhulu e-China yi-HPMC.
I-ether ye-cellulose isetyenziswa kakhulu njenge-arhente yokugcina amanzi kunye ne-thickener kwizinto ezisekwe kwisamente.
Umsebenzi wayo wokugcinwa kwamanzi unokuthintela i-substrate ekuthatheni amanzi amaninzi ngokukhawuleza kwaye ithintele ukukhuphuka kwamanzi, ukwenzela ukuba kuqinisekiswe ukuba i-samente inamanzi aneleyo xa i-hydrated.Thatha umsebenzi wokutyabeka njengomzekelo.Xa udaka lwesamente oluqhelekileyo lusetyenziswa kumphezulu we-substrate, i-substrate eyomileyo kunye ne-porous iya kuthabatha ngokukhawuleza isixa esikhulu samanzi ukusuka kwi-slurry, kwaye i-samente slurry layer kufuphi ne-substrate iya kulahlekelwa lula yi-hydration yayo.Ngoko ke, kungekhona nje kuphela ukwenza ijeli ye-samente enamandla okubambelela kumphezulu we-substrate, kodwa kwakhona kubangele i-warping kunye ne-seapage yamanzi, ukwenzela ukuba i-sement slurry layer ilula ukuwa.Xa i-grout esetyenzisiweyo incinci, kulula kwakhona ukwenza iintanda kwi-grout yonke.Ke ngoko, kwixesha elidlulileyo lokutyatyekwa komphezulu, izinto ezisisiseko zazidla ngokumanziswa ngamanzi kuqala, kodwa lo msebenzi wawunomsebenzi omkhulu kwaye udla ixesha, kwaye umgangatho wokusebenza kwakunzima ukuwulawula.
Ngokuqhelekileyo, ukugcinwa kwamanzi kwi-sement slurry kwanda ngokunyuka komxholo we-cellulose ether.Inkulu i-viscosity ye-ether ye-cellulose eyongeziweyo, ngcono ukugcinwa kwamanzi.
Ukongeza ekugcinweni kwamanzi kunye nokuqina, i-cellulose ether ichaphazela nezinye iimpawu zodaka lwesamente, ezifana nokunciphisa, ukungenisa umoya, kunye nokwandisa amandla ebhondi.I-ether ye-cellulose inciphisa ukuseta kunye nenkqubo yokuqina kwe-samente, ngaloo ndlela yandisa ixesha lokusebenza, ngoko ngamanye amaxesha isetyenziswe njengomlawuli omiselweyo.
Ngokuphuhliswa kodaka oluxutyiweyo, i-cellulose ether ibe yinto ebalulekileyo yodaka lwesamente.Nangona kunjalo, zininzi iintlobo kunye neenkcukacha ze-cellulose ether, kwaye umgangatho phakathi kweebhetshi usaguquguquka.
1. Iimpawu zokusebenza zodaka olulungisiweyo zihambelana ngokusondeleyo nophuhliso lwe-viscosity ye-cellulose ether.Nangona iimveliso ezine-viscosity ephezulu zine-viscosity yokugqibela, ngenxa yokuchithwa okucothayo, kuthatha ixesha elide ukufumana i-viscosity yokugqibela;ukongeza , I-ether ye-cellulose enamasuntswana anqabileyo ithatha ixesha elide ukufumana i-viscosity yokugqibela, ngoko ke imveliso ene-viscosity ephezulu ayifuni ukuba neempawu zokusebenza ezingcono.
2. Ngenxa yokunciphisa iqondo lepolymerization ye-cellulose ether izinto eziluhlaza, i-viscosity ephezulu ye-cellulose ether nayo ilinganiselwe.
3. Kuyimfuneko ukujonga ukuthengwa, inkqubo yokuvelisa kunye nokuhlolwa kwefektri ukuphepha ukuguquguquka komgangatho.
Ixesha lokuposa: Feb-17-2023