Umxube unefuthe elihle ekuphuculeni ukusebenza kodaka oluxutywe nodaka. Umgubo welatex ophinda unyibilike wenziwe nge-emulsion ekhethekileyo yepolymer emva kokomiswa ngokutshizwa. Umgubo welatex owomileyo ngamasuntswana athile angqukuva angama-80 ~ 100mm aqokelelwe ndawonye. La masuntswana ayanyibilika emanzini kwaye enza ukusasazeka okuzinzileyo okukhulu kancinci kuneesuntswana ze-emulsion zokuqala, ezenza ifilimu emva kokuphelelwa ngamanzi nokoma.
Amanyathelo ahlukeneyo okuguqula enza ukuba umgubo we-latex ophinda uqhekeke ube neempawu ezahlukeneyo ezifana nokumelana namanzi, ukumelana ne-alkali, ukumelana nesimo sezulu kunye nokuguquguquka. Umgubo we-latex osetyenziswa kwi-mortar unokuphucula ukumelana nempembelelo, ukuqina, ukumelana nokuguguleka, ukulula kokwakhiwa, amandla okubopha kunye nokuhlangana, ukumelana nesimo sezulu, ukumelana nokunyibilika komkhenkce, ukumelana namanzi, amandla okugoba kunye namandla okuguquguquka komotar. Kwakamsinya nje ukuba izinto ezisekwe kwisamente zongezwe nge-latex powder zidibana namanzi, impendulo yokufunxa iqala, kwaye isisombululo se-calcium hydroxide sifikelela ngokukhawuleza ekugcwaleni kwaye iikristale ziyawa, kwaye kwangaxeshanye, iikristale ze-ettringite kunye neegels ze-calcium silicate hydrate ziyenziwa. Amasuntswana aqinileyo afakwa kwi-gel kunye namasuntswana esamente angamanzi. Njengoko impendulo yokufunxa iqhubeka, iimveliso zokufunxa ziyanda, kwaye amasuntswana e-polymer aqokelelana kancinci kancinci kwi-capillary pores, enza umaleko oxineneyo kumphezulu we-gel nakwi-scents zesamente ezingamanzi. Amasuntswana e-polymer ahlanganisiweyo azalisa kancinci kancinci ii-pores.
Umgubo welatex ophinda uqhekeke unokuphucula iipropati zemortar ezifana namandla okugoba kunye namandla okunamathela, kuba unokwenza ifilimu yepolymer kumphezulu weenxalenye zemortar. Kukho iimbobo kumphezulu wefilimu, kwaye umphezulu weembobo uzaliswe yimortar, nto leyo enciphisa uxinzelelo. Kwaye phantsi kwesenzo samandla angaphandle, uya kuvelisa ukuphumla ngaphandle kokuqhekeka. Ukongeza, imortar yenza iskeleton eqinileyo emva kokuba isamente imanziswe, kwaye ipolymer ekwiskeleton inomsebenzi wejoyinti elishukumayo, elifana nezicubu zomzimba womntu. I-membrane eyenziwe yipolymer inokuthelekiswa namalungu kunye ne-ligaments, ukuqinisekisa ukuqina kunye nokuguquguquka kweskeleton eqinileyo.
Kwinkqubo yodaka lwesamente oluguqulwe yipolymer, ifilimu yepolymer eqhubekayo nepheleleyo idityaniswe nentlama yesamente kunye namasuntswana esanti, okwenza udaka lonke lube luhle kwaye lube lukhuni ngakumbi, kwaye kwangaxeshanye lwenze lonke lube yinethiwekhi ethambileyo ngokuzalisa ii-capillaries kunye nemingxuma. Ke ngoko, ifilimu yepolymer inokudlulisa ngempumelelo uxinzelelo kunye noxinzelelo lwe-elastic. Ifilimu yepolymer inokubhidliza iintanda ezinciphileyo kwindawo yokudibanisa ipolymer-mortar, iphilise iintanda ezinciphileyo, kwaye iphucule ukutywinwa kunye namandla adibeneyo odaka. Ubukho beedomeyini zepolymer eziguquguqukayo kakhulu nezinciphileyo buphucula ukuguquguquka kunye nokuqina kodaka, bubonelela ngokuhambelana kunye nokuziphatha okuguquguqukayo kumathambo aqinileyo. Xa kusetyenziswa amandla angaphandle, inkqubo yokusasazwa kwe-microcrack iyalibaziseka ngenxa yokuguquguquka okuphuculweyo kunye nokuqina kude kufikelelwe kwiingcinezelo eziphezulu. Iidomeyini zepolymer ezidityanisiweyo nazo zisebenza njengomqobo ekuhlanganiseni kwee-microcracks kwiintanda ezingenelayo. Ke ngoko, umgubo wepolymer ophinda uchitheke uphucula uxinzelelo lokusilela kunye noxinzelelo lokusilela kwezinto.
Ixesha lokuthumela: Matshi-10-2023