Iselulosi etherinika udaka olumanzi kunye ne-viscosity egqwesileyo, enokunyusa kakhulu amandla okudibanisa phakathi kodaka olumanzi kunye nomgangatho wesiseko, kunye nokuphucula ukusebenza kwe-anti-sag yodaka. Isetyenziswa ngokubanzi kwi-plastering mortar, inkqubo yokugquma eludongeni yangaphandle kunye nodaka lokubopha ngezitena. Isiphumo sokutyeba se-cellulose ether inokunyusa i-homogeneity kunye nesakhono sokuchasa ukusasazeka kwezinto ezixutywe ngesamente, zithintele i-delamination, ulwahlulo kunye nokopha kodaka kunye nekhonkrithi, kwaye ingasetyenziselwa kwikhonkrithi yefiber, ikhonkrithi engaphantsi kwamanzi kunye nekhonkrithi yokuzidibanisa. .
I-ether ye-cellulose yandisa i-viscosity yezinto ezisekelwe kwi-samente ukusuka kwi-viscosity yesisombululo se-cellulose ether. Isalathiso se "viscosity" sihlala sisetyenziselwa ukuvavanya i-viscosity yesisombululo se-cellulose ether. I-viscosity ye-cellulose ether ngokubanzi ibhekisela kwisisombululo se-cellulose ether kunye noxinzelelo oluthile (njenge-2%). Isantya (okanye izinga lokujikeleza, njenge-20 rpm), ixabiso le-viscosity elilinganiswe nesixhobo esichaziweyo sokulinganisa (njenge-viscometer ejikelezayo).
I-Viscosity yiparameter ebalulekileyo yokuvavanya ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscosity yesisombululo se-ether se-cellulose, ngcono i-viscosity yezinto ezisekelwe kwi-samente, ngcono ukunamathela kwi-substrate, kunye namandla okuchasa ukuchithwa kunye nokulwa nokusabalalisa. Ukuba i-viscosity yayo iphezulu kakhulu, iya kuchaphazela umbane kunye nokusebenza kwezinto ezisekelwe kwisamente (ezifana nokuncamathelisa iimela zokutyabeka ngexesha lokwakhiwa kodaka). Ke ngoko, i-viscosity ye-cellulose ether esetyenziswa kumdaka oxubeneyo owomileyo idla ngokuba yi-15,000 ~ 60,000 mPa. I-S-1, i-self-leveling mortar kunye ne-self-compacting concrete, efuna i-fluidity ephezulu, idinga i-viscosity ephantsi ye-cellulose ether.
Ukongeza, isiphumo esityebileyo se-cellulose ether sonyusa isidingo samanzi sezinto ezisekelwe kwisamente, ngaloo ndlela kwandisa isivuno sodaka.
I-viscosity yesisombululo se-ether cellulose ixhomekeke kule miba ilandelayo:
Ubunzima bemolekyuli (okanye idigri yepolymerization) kunye noxinzelelo lwe-cellulose ether, ubushushu besisombululo, izinga le-shear kunye nendlela yokuvavanya.
1. Iqondo eliphezulu le-polymerization ye-cellulose ether, ubukhulu be-molecular weight, kunye nokuphakama kwe-viscosity yesisombululo sayo samanzi;
2. Okukhona idosi ephezulu (okanye i-concentration) ye-cellulose ether, iphezulu i-viscosity yesisombululo sayo samanzi, kodwa kufuneka kuthathelwe ingqalelo ukukhetha idosi efanelekileyo xa uyisebenzisa, ukwenzela ukuba ingachaphazeli ukusebenza kodaka kunye nekhonkrithi ukuba idosi iphezulu kakhulu;
3. Njengamanzi amaninzi, i-viscosity yesisombululo se-ether ye-cellulose iya kuncipha ngokunyuka kweqondo lokushisa, kwaye iphezulu i-concentration ye-cellulose ether, impembelelo enkulu yeqondo lokushisa;
4. Isisombululo se-cellulose ether ngokuqhelekileyo i-pseudoplastic, enepropati ye-shear thinning. Ixabiso elikhulu lokucheba ngexesha lovavanyo, lisezantsi i-viscosity.
Ngoko ke, ukudityaniswa kodaka kuya kuncitshiswa ngenxa yamandla angaphandle, okunenzuzo ekukhutsheni ukwakhiwa kodaka, ukwenzela ukuba udaka lunokusebenza kakuhle kunye nokubambisana ngexesha elifanayo. Nangona kunjalo, isisombululo se-cellulose ether siya kubonisa iimpawu ze-Newtonian fluid xa i-concentration iphantsi kakhulu kwaye i-viscosity incinci. Xa ugxininiso lukhula, isisombululo siya kubonisa ngokuthe ngcembe iimpawu ze-pseudoplastic fluid, kwaye ukuphakama koxinzelelo, kucacile ngakumbi i-pseudoplasticity.
Ixesha lokuposa: Jan-18-2023