Ua hauj lwm Mechanism ntawm Redispersible Polymer Powder (RDP)

Redispersible Polymer Powder (RDP) yog cov dej-soluble polymer hmoov uas tau siv dav hauv cov khoom siv los txhim kho kev ua haujlwm ntawm cov ntaub ntawv cementitious xws li mortar, pobzeb adhesives, thiab grouts. Lub tshuab ua haujlwm ntawm RDP yog raws li nws lub peev xwm los txhim kho cov khoom ntawm cov ntaub ntawv cementitious los ntawm kev tsim cov yeeb yaj kiab uas hloov tau yooj yim thiab ruaj khov.

Thaum ntxiv rau cov khoom siv cementitious, RDP particles yog dispersed nyob rau hauv dej thiab ua activated. Tom qab ntawd cov khoom pib hydrate thiab yaj, tso cov polymer rau hauv qhov sib tov. Cov polymer molecules txuas rau cov cement hais thiab tsim ib zaj duab xis hloov tau zoo uas txhim kho qhov adhesion thiab lub zog ntawm cov khoom.

RDP zaj duab xis kuj tseem txhim kho qhov yooj yim thiab elasticity ntawm cov khoom cementitious, tso cai rau nws tiv taus kev txav thiab deformation los ntawm ib puag ncig yam xws li kub hloov pauv, noo noo, thiab cov qauv txav. Tsis tas li ntawd, zaj duab xis pab txo cov dej nqus dej thiab ua kom muaj zog tiv thaiv cov tshuaj tua kab mob, ua rau muaj kev txhim kho zoo dua qub thiab siv tau ntev.

RDP tseem tuaj yeem txhim kho kev ua haujlwm, txo qis thiab tawg, thiab txhim kho tag nrho cov tsos ntawm cov khoom kawg. Nws tuaj yeem siv rau hauv ntau hom kev tsim kho, suav nrog hauv pem teb, phab ntsa, thiab facades.

Hauv cov ntsiab lus, kev ua haujlwm ntawm RDP suav nrog kev tsim cov yeeb yaj kiab hloov pauv thiab ruaj khov polymer uas txhim kho cov khoom ntawm cov khoom siv cementitious. Cov zaj duab xis txhim kho adhesion, lub zog, yooj, durability, thiab dej tsis kam, ua rau cov khoom siv ua haujlwm siab.