EPS granular thermal insulation mortar chinhu chakareruka chekudzivirira kupisa chakasanganiswa ne inorganic binder, organic binder, admixture, admixture uye light aggregate mune imwe shanho. Mukutsvaga kuri kuitwa uye kushandiswa kweEPS particle insulation mortar, upfu hwelatex hunodzokororwa hune simba guru pakushanda kwemortar uye hune huwandu hwakanyanya mumutengo, saka hwagara huri chinhu chinonyanya kutariswa. Kushanda kwekubatanidza kweEPS particle thermal insulation mortar external wall thermal insulation system kunonyanya kubva kupolymer binder, uye chikamu chayo chinonyanya kuve vinyl acetate/ethylene copolymer. Rudzi urwu rwepolymer emulsion runogona kuomeswa nespray kuti ruwane redispersible latex powder. Nekuda kwekugadzirira kwakanyatsojeka redispersible latex powder mukuvaka, kutakurwa kuri nyore uye kuchengetwa kuri nyore, upfu hwakareruka hwepolymers hwave mafambiro ekukura nekuda kwekugadzirira kwahwo kwakanyatsojeka, kutakurwa kuri nyore uye kuchengetwa kuri nyore. Kushanda kweEPS particle insulation mortar kunoenderana zvakanyanya nerudzi nehuwandu hwepolymer inoshandiswa. Ethylene-vinyl acetate latex powder (EVA) ine ethylene yakawanda uye Tg yakaderera (girazi transition temperature) ine hunhu huri nani kana tichitarisa simba reimpact, simba rebond uye kuramba mvura.
Kugadziriswa kwekushanda kweupfu hwelatex hunonyungudika pamortar kunokonzerwa nekuti upfu hwepolymer hune molecular polymer yakawanda ine mapoka epolar. Kana RDP ikasanganiswa nezvikamu zveEPS, chikamu chisiri polar chiri muketani huru yeupfu hwepolymer chinonyungudika nepamusoro peEPS. Mapoka epolar ari mupolymer anonangidzirwa kunze pamusoro pezvikamu zveEPS, zvichiita kuti zvikamu zveEPS zvichinje kubva pakuva hydrophobic kuenda ku hydrophilic. Nekuda kwekushandurwa kwepamusoro pezvikamu zveEPS neupfu hwepolymer, dambudziko rekuti zvikamu zveEPS zviri nyore kusangana nemvura rinogadziriswa. Matambudziko makuru ekubvisa mortar. Panguva ino, pakuwedzera simende nekukurunga, mapoka epolar anonyungudika pamusoro pezvikamu zveEPS anosangana nezvikamu zvesimende uye anosangana zvakanyanya, izvo zvinovandudza zvakanyanya kushanda kwemortar yeEPS insulation. Izvi zvinoratidzwa mukuti zvikamu zveEPS zvinonyoroveswa nyore nyore nesimende slurry, uye simba rekubatana pakati pezviviri rinovandudzika zvikuru.
Mushure mekunge emulsion ne redispersible latex powder zvagadzirwa kuita firimu, zvinogona kugadzira simba rekusunga uye simba rekubatanidza zvinhu zvakasiyana. Zvinoshandiswa sechipiri chinosunga mumota kuti zvisanganiswe nesimende, simende nepolymer zvisina kugadzirwa. Shandisa simba rinoenderana uye kuvandudza mashandiro emota. Nekutarisa magadzirirwo epurasitiki yepolymer-cement composite material, zvinofungidzirwa kuti kuwedzerwa kwe redispersible latex powder kunogona kuita kuti polymer film iite chikamu chemadziro egomba, uye kuita kuti mota iite yese kuburikidza nesimba remukati, izvo zvinovandudza simba remukati remota. Simba repolymer, nokudaro zvichiwedzera kukundikana kwemota uye kuwedzera kumanikidzwa kwekupedzisira. Kuti tidzidze mashandiro enguva refu e redispersible latex powder mumota, zvakaonekwa ne scanning electron microscope, mushure memakore gumi, microstructure yepolymer mumota haina kuchinja, ichichengetedza bonding yakagadzikana, simba re flexural uye simba rekumanikidza pamwe ne Hydrophobic yakanaka. Tichitora upfu hwelatex hunonyungudika sechinangwa chekutsvagisa, nzira yekuumbwa kwesimba rekubatanidza mataira yakadzidzwa, uye zvakaonekwa kuti mushure mekunge polymer yaoma kuita firimu, firimu repolymer rakagadzira kubatana kunochinjika pakati pemota netaira kune rumwe rutivi, uye kune rumwe rutivi, Mapolymer ari mumota anowedzera huwandu hwemhepo mumota, zvichikanganisa kutwasuka uye kunyorova kwepamusoro, uye mushure meizvozvo panguva yekugadzika, mapolymer anewo mhedzisiro yakanaka pakunyorova uye kuderera kwesimende. Zvinonamira, izvi zvese zvinobatsira kuwedzera simba rebond.
Kuwedzera upfu hwelatex hunonyungudika mumota kunogona kuvandudza simba rekubatanidza nezvimwe zvinhu, nekuti chikamu chemvura chehydrophilic polymer powder ne cement suspension chinopinda muma pores ne capillaries e matrix, nepo upfu hwelatex huchipinda muma pores ne Mu capillary. Firimu remukati rinoumbwa uye rinonamirwa zvakasimba pamusoro pe substrate, nokudaro zvichiita kuti pave nesimba rakanaka rekubatanidza pakati pe gelled material ne substrate.
Nguva yekutumira: Chikumi-16-2023