Kwi-mortar eyomileyo, i-cellulose ether iyona nto yokongeza inokuphucula kakhulu ukusebenza kodaka olumanzi kwaye ichaphazele ukwakhiwa kodaka.I-Methyl cellulose ether idlala indima yokugcina amanzi, ukuqina, kunye nokuphuculwa komsebenzi wokwakha.Ukusebenza kakuhle kogcino lwamanzi kuqinisekisa ukuba udaka aluyi kubangela isanti, umgubo kunye nokunciphisa amandla ngenxa yokunqongophala kwamanzi kunye ne-cement hydration engaphelelanga;isiphumo sokuqina Amandla okwakhiwa kodaka olumanzi ayanda kakhulu, kwaye ukongezwa kwe-methyl cellulose ether kunokuphucula kakhulu i-viscosity emanzi yodaka olumanzi, kwaye ibe nokubambelela kakuhle kwii-substrates ezahlukeneyo, ngaloo ndlela kuphuculwe ukusebenza kodaka olumanzi eludongeni. kunye nokunciphisa inkunkuma;ukongeza, ezahlukeneyo Indima ye-cellulose kwiimveliso nazo zihluke, umzekelo: i-cellulose kwi-adhesives tile inokunyusa ixesha lokuvula kunye nokulungelelanisa ixesha;i-cellulose kwi-mechanical spraying mortar inokuphucula amandla esakhiwo sodaka olumanzi;kwi-self-leveling, i-cellulose idlala indima ekunqandeni ukuhlaliswa, Ukwahlula kunye nokuhlelwa.
Ukuveliswa kwe-ether ye-cellulose yenziwa ngokukodwa kwimicu yendalo ngokuchithwa kwe-alkali, i-grafting reaction (i-etherification), ukuhlamba, ukomisa, ukugaya kunye nezinye iinkqubo.Izinto eziphambili zezinto ezisisiseko zemicu yendalo zinokuhlulwa zibe: i-cotton fiber, i-fiber yemisedare, i-beech fiber, njl.Okwangoku, abavelisi abakhulu be-cellulose basebenzisa i-cotton fiber (imveliso ye-nitrocellulose) njengeyona nto iphambili.I-cellulose ethers inokwahlulwa ibe yi-ionic kunye ne-non-ionic.Uhlobo lwe-ionic ikakhulu lubandakanya ityuwa ye-carboxymethyl cellulose, kwaye uhlobo lwe-non-ionic ikakhulu lubandakanya i-methyl cellulose, i-methyl hydroxyethyl (propyl) cellulose, kunye ne-hydroxyethyl cellulose.Su njalo njalo.Kwi-powder mortar eyomileyo, ngenxa yokuba i-ionic cellulose (ityuwa ye-carboxymethyl cellulose) ayizinzile xa kukho i-calcium ion, ayifane isetyenziswe kwiimveliso zomgubo owomileyo ezifana ne-cement slaked lime njengezinto ze-cementitious.
Ukugcinwa kwamanzi kwi-cellulose kukwanxulumene nobushushu obusetyenzisiweyo.Ukugcinwa kwamanzi kwe-methyl cellulose ether kuncipha ngokunyuka kwamaqondo obushushu.Ngokomzekelo, ehlotyeni, xa kukho ukukhanya kwelanga, i-putty yangaphandle yodonga ifakwe, ehlala ikhawuleza ukunyangwa kwesamente kunye nodaka.Ukuqina kunye nokunciphisa izinga lokugcinwa kwamanzi kukhokelela kwimvakalelo ecacileyo yokuba zombini umsebenzi wokwakha kunye nokusebenza okuchasene nokuqhekeka kuchaphazelekayo.Kule meko, kubaluleke kakhulu ukunciphisa impembelelo yezinto zokushisa.Ngamanye amaxesha ayikwazi ukuhlangabezana neemfuno zokusetyenziswa.Olunye unyango lwenziwa kwi-cellulose, njengokunyusa izinga le-etherification, njl., ukwenzela ukuba umphumo wokugcinwa kwamanzi usenokugcina isiphumo esingcono kwiqondo lokushisa eliphezulu.
Ukugcinwa kwamanzi e-cellulose: Izinto eziphambili ezichaphazela ukugcinwa kwamanzi kwi-mortar ziquka ubuninzi be-cellulose eyongeziweyo, i-viscosity ye-cellulose, i-fineness ye-cellulose, kunye nobushushu bendawo yokusebenza.
I-Viscosity ye-cellulose: Ngokuqhelekileyo, ukuphakama kwe-viscosity, ngcono ukugcinwa kwamanzi, kodwa ukuphakama kwe-viscosity, ukuphakama kwe-molecular weight of cellulose, kunye nokuncipha okuhambelanayo kokunyibilika kwayo, okunempembelelo embi ekusebenzeni kolwakhiwo. nokomelela kodaka .Ukuphakama kwe-viscosity, kuyabonakala ngakumbi umphumo wokuqina kumdaka, kodwa awuhambelani ngokuthe ngqo.Ukuphakama kwe-viscosity, i-viscous ngakumbi udaka olumanzi luya kuba.Ngexesha lokwakha, iya kubambelela kwi-scraper kwaye ibe nokunamathela okuphezulu kwi-substrate, kodwa ayiyi kunceda kakhulu ukunyusa amandla okwakhiwa kodaka olumanzi ngokwawo, kwaye ukusebenza kwe-anti-sag akuyi kubonakala ngexesha lokwakha.
Ukucoleka kweselulosi: Ukucoleka kuchaphazela ukunyibilika kwe-cellulose ether.I-coarse cellulose idla ngokuba yigranular kwaye isasazeke ngokulula emanzini ngaphandle kwe-agglomeration, kodwa izinga lokuchithwa licotha kakhulu.Ayifanelekanga ukusetyenziswa kwipowder eyomileyo yodaka.Iveliswa ekhaya Enye i-cellulose i-flocculent, akulula ukuyichitha kwaye inyibilike emanzini, kwaye kulula ukuyidibanisa.Kuphela umgubo ocolekileyo ngokwaneleyo unokunqanda i-methyl cellulose ether agglomeration xa udibanisa amanzi kunye nokuvuselela.Kodwa i-ether ye-cellulose engqindilili ayidlali nje kuphela kodwa ikwanciphisa amandla asekuhlaleni odaka.Xa udaka olomileyo lomgubo lwakhiwe kwindawo enkulu, isantya sokunyanga sodaka lwendawo siyancitshiswa, kwaye kuvela iintanda ngenxa yamaxesha ahlukeneyo okuphilisa.Ngenxa yexesha elifutshane lokuxuba, udaka olunokwakhiwa koomatshini lufuna ukucolwa okuphezulu.
Ixesha lokuposa: Feb-13-2023