QXME 103P; Asphalt Emulsifier, Hydrogenated Tallow Amine, Stearyl Amine

Cov asphalt paving uas ua los ntawm cov emulsifiers zoo ua rau kev tsim kho yooj yim dua. Tsis tas yuav tsum ua kom sov asphalt rau qhov kub siab txog 170 ~ 180 ° C ua ntej siv. Cov khoom siv hauv av xws li xuab zeb thiab pob zeb tsis tas yuav qhuav thiab cua sov, uas tuaj yeem txuag tau ntau roj thiab cua sov. Vim tias asphalt emulsion muaj kev ua haujlwm zoo, nws tuaj yeem faib sib npaug ntawm qhov chaw ntawm cov pob zeb thiab muaj kev sib txuas zoo nrog nws, yog li nws tuaj yeem txuag tau ntau asphalt, ua kom yooj yim rau cov txheej txheem tsim kho, txhim kho cov xwm txheej tsim kho, thiab txo cov pa phem rau ib puag ncig. Vim yog cov txiaj ntsig no, emulsified asphalt tsis yog tsuas yog tsim rau kev paving txoj kev xwb, tab sis kuj tseem rau kev tiv thaiv qhov nqes hav ntawm cov embankments sau, kev tiv thaiv dej ntawm lub tsev ru tsev thiab qhov tsua, kev tiv thaiv xeb ntawm cov khoom siv hlau, kev txhim kho av ua liaj ua teb thiab kev noj qab haus huv ntawm cov nroj tsuag, tag nrho txoj kev tsheb ciav hlau, kev kho xuab zeb hauv suab puam, thiab lwm yam. Nws yog siv dav hauv ntau qhov project. Vim tias emulsified asphalt tsis tsuas yog txhim kho cov txheej txheem tsim kho ntawm asphalt kub, tab sis kuj nthuav dav qhov kev siv ntawm asphalt, emulsified asphalt tau tsim kho sai.

Asphalt emulsifier yog ib hom surfactant. Nws cov qauv tshuaj muaj cov pab pawg lipophilic thiab hydrophilic. Nws tuaj yeem nqus tau ntawm qhov sib txuas ntawm cov asphalt thiab dej, yog li txo qhov zog dawb ntawm qhov sib txuas ntawm asphalt thiab dej, ua rau nws yog surfactant uas tsim cov emulsion sib xws thiab ruaj khov.

Surfactant yog ib yam khoom uas tuaj yeem txo qhov nro ntawm qhov chaw ntawm dej thaum ntxiv me ntsis, thiab tuaj yeem hloov pauv cov yam ntxwv ntawm lub interface thiab lub xeev ntawm lub kaw lus, yog li ua rau ntub, emulsification, foaming, ntxuav, thiab dispersion. , antistatic, lubrication, solubilization thiab ntau yam haujlwm kom ua tau raws li qhov xav tau ntawm kev siv.

Txawm yog hom surfactant twg los xij, nws lub molecule yeej ib txwm muaj cov saw hydrocarbon uas tsis yog polar, hydrophobic thiab lipophilic thiab ib pawg polar, oleophobic thiab hydrophilic. Ob feem no feem ntau nyob rau ntawm qhov chaw. Ob qhov kawg ntawm lub molecule active agent tsim ib qho qauv asymmetric. Yog li ntawd, cov qauv molecular ntawm surfactant yog tus cwj pwm los ntawm ib lub molecule amphiphilic uas yog ob qho tib si lipophilic thiab hydrophilic, thiab muaj lub luag haujlwm ntawm kev txuas cov roj thiab dej theem.

Thaum cov surfactants tshaj qhov concentration hauv dej (critical micelle concentration), lawv tuaj yeem tsim cov micelles los ntawm cov nyhuv hydrophobic. Cov tshuaj emulsifier zoo tshaj plaws rau emulsified asphalt yog ntau dua li qhov concentration critical micelle.