I-ether ye-cellulose inesiphumo esithile sokunciphisa udaka.Ngokunyuka kwedosi ye-cellulose ether, ixesha lokumisela lodaka liyakwandisa.Isiphumo esibambekayo se-cellulose etere kwintlama yesamente ixhomekeke ikakhulu kwiqondo lokuthatha indawo yeqela le-alkyl, ngelixa ingenanto yakwenza nobunzima bayo bemolekyuli.
Incinci idigri ye-alkyl substitution, isikhulu isiqulatho se-hydroxyl, kunye nokucaca ngakumbi isiphumo sokubuyiswa.Kwaye okukhona iphezulu idosi ye-cellulose ether, kokukhona isiphumo sokulibaziseka somaleko wefilim entsonkothileyo sicaca ngakumbi ekufakweni kwamanzi kwangaphambili kwesamente, ngoko ke isiphumo sokubambezela sikwabonakala ngakumbi.
Amandla yenye yezalathisi ezibalulekileyo zovavanyo lwesiphumo sokunyanga semathiriyeli esekwe kwisamente kumxube.Xa idosi ye-cellulose ether inyuka, amandla oxinzelelo kunye namandla okuguquguquka kodaka luya kuncipha.Ukuqina kokuqina kokuqina kodaka lwesamente oluxutywe ne-cellulose ether kuyaphuculwa;Amandla e-flexural kunye noxinzelelo lwe-samente yodaka luyancitshiswa, kwaye i-dosage enkulu, iyancipha amandla;
Emva kokuxuba i-hydroxypropyl methyl cellulose ether, ngokunyuka kwedosi, amandla aguquguqukayo odaka lwesamente ayanda kwaye ayancipha, kwaye amandla oxinzelelo ayancipha ngokuthe ngcembe.Idosi efanelekileyo kufuneka ilawulwe kwi-0.1%.
I-ether ye-cellulose inempembelelo enkulu ekusebenzeni kokubambisana kodaka.I-cellulose ether yenza ifilimu ye-polymer enefuthe lokutywinwa phakathi kweengqungquthela ze-sement hydration kwinkqubo yesigaba se-liquid, ekhuthaza amanzi amaninzi kwifilimu ye-polymer ngaphandle kweengqungquthela ze-cement, ezihambelana ne-hydration epheleleyo ye-cement, ngaloo ndlela iphucula amandla ebhondi. yentlama emva kokuqina.
Kwangaxeshanye, isixa esifanelekileyo se-ether ye-cellulose siphucula iplastiki kunye nokuguquguquka kodaka, kunciphisa ukuqina kwendawo yokutshintsha phakathi kodaka kunye ne-interface ye-substrate, kunye nokunciphisa ukukwazi ukutyibilika phakathi kwe-interfaces.Ukuya kumlinganiselo othile, impembelelo yokudibanisa phakathi kodaka kunye ne-substrate iphuculwe.
Ukongezelela, ngenxa yobukho be-cellulose ether kwi-sement paste, indawo ekhethekileyo yokutshintshwa kwendawo kunye ne-interface layer yenziwa phakathi kweengqungquthela zodaka kunye nemveliso ye-hydration.Lomaleko wojongano lwenza indawo yotshintsho yojongano ibe bhetyebhetye kwaye ingaqina kancinci.Ke, yenza udaka lube namandla ebhondi eyomeleleyo.
Ixesha lokuposa: Jun-02-2023