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Saamaynta togan ee budada polymer ee cimri dhererka hoobiye

Waqtigan xaadirka ah, budada cinjirka ee dib loo cusboonaysiin karo ayaa door muhiim ah ka ciyaartay wax lagu daro hoobiyeyaasha dhismaha. Ku darista budada cinjirka ee dib loo cusboonaysiin karo ee hoobiye waxay diyaarin kartaa noocyo kala duwan oo alaabooyin hoobiye ah sida koollada tile, hoobiye dahaarka kulaylka, hoobiye is-lejo, putty, hoobiye malaastaan, hoobiye qurxinta, wakiilka tilmaame, hoobiye dayactirka iyo shaabadeynta biyuhu aanay. Baaxadda codsiga iyo waxqabadka codsiga ee hoobiye dhismaha.

Sameynta filimka polymer-ka ee joogtada ah ayaa aad muhiim ugu ah waxqabadka hoobiyeyaal-polymer-la beddelay. Inta lagu jiro habka dejinta iyo adkeynta koollada sibidhka, godadka badan ayaa ka soo bixi doona gudaha, kuwaas oo noqda qaybaha daciifka ah ee koollada sibidhka. Ka dib marka lagu daro budada cinjirka ee dib loo cusboonaysiin karo, budada cinjirka ayaa isla markiiba u firdhi doonta emulsion marka ay la kulanto biyaha, waxayna ku ururin doontaa aagga biyaha qaniga ah (taas oo ah, godka). Sida koollada sibidhka ay dejiso oo ay adkaato, dhaqdhaqaaqa qaybaha polymer-ka ayaa si sii kordheysa u xaddidan, xiisadda wejiga ee u dhaxaysa biyaha iyo hawada ayaa ku qasbaysa inay si tartiib tartiib ah isu waafajiyaan. Marka qaybaha polymer-ka ay la soo xiriiraan midba midka kale, shabakada biyaha ayaa uumi baxa iyada oo loo marayo xididada, iyo polymer-ka waxay sameeyaan filim joogto ah oo ku wareegsan daloolka, xoojinta meelahan daciifka ah. Waqtigaan, filimka polymer ma ciyaari karo oo kaliya doorka hydrophobic, laakiin sidoo kale ma xannibi karo capillary, si maaddadu u leedahay hydrophobicity wanaagsan iyo hawada hawada.

Hoobiyaha sibidhka ee aan lahayn polymer-ka ayaa si dabacsan isugu xidhan. Taas beddelkeeda, dhoobada sibidhka ee la beddelay ayaa ka dhigaysa dhammaan hoobiyeyaal si aad ah ugu xiran sababtoo ah jiritaanka filimka polymer, sidaas darteed helitaanka qalab farsamo oo wanaagsan iyo galmada iska caabinta cimilada. Budada cinjirka ah ee hoobiye cement la beddelay, budada cinjirka waxay kordhin doontaa porosity ee koollada sibidhka, laakiin waxay yaraynaysaa porosity ee aagga kala-guurka interface ee u dhexeeya koollada sibidhka iyo wadarta, taasoo keentay in porosity guud ee hoobiye uu asal ahaan isbeddelo. Ka dib markii budada cinjirka ah loo sameeyay filim, waxay si fiican u xannibi kartaa daloolada hoobiye, samaynta qaab dhismeedka aagga kala-guurka ee u dhexeeya koollada sibidhka iyo isku-darka cufan, iyo caabbinta permeability ee hoobiye la beddelay oo la hagaajiyay. , iyo awoodda looga hortagayo nabaad-guurka warbaahinta waxyeellada leh ayaa la xoojiyay. Waxay saameyn togan ku leedahay hagaajinta adkeysiga hoobiye.


Waqtiga boostada: Febraayo-20-2023
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