Iselulosi etherinika udaka olumanzi kunye ne-viscosity egqwesileyo, inokunyusa kakhulu amandla okudibanisa udaka olumanzi kunye neengca, iphucule ukusebenza kwe-anti-sag yodaka, esetyenziswa ngokubanzi kudaka lwe-plaster, inkqubo yokugquma yangaphandle kunye nodaka lokudibanisa izitena. Isiphumo esityebileyo se-ether cellulose sinokunyusa ukufana kunye nobuchule bokuchasana nokusasazeka kwezinto ezintsha ezisekelwe kwisamente, ukuthintela ulwahlulo, ulwahlulo kunye nokopha kodaka kunye nekhonkrithi, ingasetyenziselwa kwikhonkrithi yefayibha, ikhonkrithi ephantsi kwamanzi kunye ne-self-compacting concrete.
Iselulosi etherkwandisa i-viscosity yezinto ezisekelwe kwi-samente ukusuka kwi-viscosity yesisombululo se-cellulose ether. Ngokuqhelekileyo sebenzisa "i-viscosity" le metric ukuvavanya i-viscosity ye-cellulose ether isisombululo, i-viscosity ye-cellulose ether ngokubanzi ibhekisela kugxininiso oluthile (2%) lwesisombululo se-cellulose ether, ubushushu (20 ℃) kunye nesantya sokucheba (okanye isantya sokujikeleza, esifana ne-20 RPM) iimeko, kunye nezibonelelo zesixhobo sokulinganisa, ezifana ne-viscometer ejikelezayo amaxabiso e-viscosity. I-Viscosity yiparameter ebalulekileyo yokuvavanya ukusebenza kwe-cellulose ether kunye ne-cellulose ether, iphezulu i-viscosity yesisombululo, ngcono i-viscosity yezinto ezisisiseko sesamente, i-viscosity yezinto ezisisiseko zinako, ukuxhathisa kunye nokuchasana kunamandla okusabalalisa amandla, kodwa ukuba i-viscosity inkulu kakhulu, inokuchaphazela ukuhamba kwesiseko sesamente kunye nokuhamba (njengokwakhiwa kwe-plaster mortar adhesive plaster). Ke ngoko, i-viscosity ye-cellulose ether esetyenziswa kumdaka oxubeneyo owomileyo idla ngokuba yi-15,000 ~ 60,000 Mpa. s-1, kunye ne-viscosity ye-ether ye-cellulose iyadingeka ukuba ibe ngaphantsi kwi-self-leveling mortar kunye ne-self-compactconcrete kunye neemfuno eziphezulu zokunyuka kwamanzi. Ukongezelela, umphumo wokuqina we-cellulose ether uya kwandisa imfuno yamanzi yezinto ezisekelwe kwi-samente, ngaloo ndlela ukwandisa ukukhutshwa komdaka. I-viscosity yesisombululo se-ether ye-cellulose ixhomekeke kubunzima be-molecular (okanye iqondo le-polymerization) kunye nokugxininiswa kwe-ether cellulose, ubushushu besisombululo, izinga le-shear, kunye nendlela yokuvavanya. Ukuphakama kweqondo le-polymerization ye-cellulose ether, ubukhulu be-molecular weight, iphezulu i-viscosity yesisombululo sayo samanzi; I-dosage ephezulu (okanye i-concentration) ye-cellulose ether, iphezulu i-viscosity yesisombululo sayo samanzi, kodwa ekusetyenzisweni kufuneka ihlawule ingqalelo ekukhethweni kwemilinganiselo efanelekileyo, ukwenzela ukuba ingaxutywanga kakhulu, ichaphazele ukusebenza kodaka kunye nekhonkrithi; Njengamanzi amaninzi, i-viscosity yesisombululo se-cellulose ether iya kuncipha ngokunyuka kweqondo lokushisa, kwaye ukuphakama kwe-cellulose ether ephezulu, isiphumo esikhulu sobushushu; Isisombululo se-ether se-cellulose ngokuqhelekileyo ngumzimba we-pseudoplastic onepropati yokucheba. Ukuphakama kwesantya sokucheba, isezantsi i-viscosity.
Ngoko ke, ukudityaniswa kodaka kuya kuncitshiswa ngamandla angaphandle, okuhambelana nokwakhiwa kodaka, ukwenza udaka lunokusebenza kakuhle kunye nokubambisana. Nangona kunjalo, isisombululo se-cellulose ether siya kubonisa iimpawu ze-Newtonian fluid xa i-concentration iphantsi kakhulu kwaye i-viscosity incinci kakhulu. Xa ugxininiso lukhula, isisombululo ngokuthe ngcembe sibonisa iimpawu ze-pseudoplastic fluid, kwaye ukuphakama koxinzelelo, kucacile ngakumbi i-pseudoplastic.
Ixesha lokuposa: Jun-14-2022