Kev Tshawb Fawb thiab thev naus laus zis ntawm Pob Zeb Nkag rau Kev Ua Si rau Choj

Cov haujlwm ua haujlwm ntawm ntau cov tshuaj lom neeg admixtures koom nrog adsorption ntawm dej-soluble sib txuas ntawm cov kis – kua interface. Qhov no yog qhov tshwj xeeb rau kev tsim cov taub dej thiab cov ntsuas dej siab, uas feem ntau ntawm tshooj no tau mob siab. Ntxiv mus, tus txheej txheem no tseem txhawj txog cov neeg ruam qeeb. Txuas ntxiv.

adsorption ntawm es dej-insoluble tebchaw thiab / los yog tej yam uas muaj qhov sib thooj siab rau cov nplaim yog siv rau hauv huab cua-nkag thiab shrinkage-txo admixtures, qhov twg saum cov neeg ua hauj lwm (surfactants) tau siv tshwj xeeb hloov cov khoom ntawm cov kua interface vapor interface ntawm cov pob zeb Cov. Txawm hais tias muaj qhov sib txuam nrog rau cov kua – huab cua cuam tshuam, cov surfactants no tuaj yeem, txawm li cas los xij, kuj tseem ua rau lub ntsej muag khov ua kua lossis ua rau lawv tus kheej ua micelles lossis kua muaju. Qhov no ua rau kev piav qhia ntawm surfactant adsorption ua haujlwm tsis yooj yim, zoo li tau sib tham hauv Ntu {{4}. 4. 3 rau lub cev-kua sib xyaw thiab hauv Tshooj {{{{5 {} 8 rau kom lub kua – huab cua sib cuam tshuam.

Yog tias peb xav txog kev muab cov khoom tawg, nws qhov cuam tshuam rau fluidity nce nrog ntau npaum li cas, muab hais tias admixture tseem tso tawm rau ntawm cov nplaim hluav taws xob kom tawg (Ntu 10. 2). Qhov tseeb, nws tshwj xeeb tshaj yog adsorbed feem ntawm cov khoom tawg uas yog lub luag haujlwm rau cov nyhuv ntawm fluidity, raws li tau piav qhia hauv Tshooj 11 (Gelardi thiab Flatt, 2 016). Nyob ntawm hom admixture thiab nws li ntau npaum li cas, tej zaum yuav muaj lossis tsis yog qhov sib npaug tsim los ntawm cov feem ntawm admixtures adsorbed thiab cov uas tseem nyob hauv kev daws teeb meem. Qhov xwm txheej ntawm qhov kev sib raug zoo no feem ntau tau qhia nyob rau hauv daim ntawv ntawm adsorption isotherms, uas tau hais nyob rau hauv Tshooj 10. 3.