Emulsion uye redispersible latex powder inogona kuumba simba guru uye simba rekubatanidza pane zvakasiyana-siyana mushure mekugadzirwa kwefirimu, inoshandiswa sechipiri binder mudhaka kuti isanganise neinorganic binder simende, simende uye polymer zvakateerana Ipa kutamba kwakazara kune simba rinoenderana nekuvandudza kushanda kwedhaka.
Nokucherechedza microstructure yepolymer-cement composite material, zvinotendwa kuti kuwedzerwa kwelatex powder inogona kuita kuti polymer iite firimu uye ive chikamu chemadziro egomba, uye kuita kuti dhaka rive rakazara kuburikidza nesimba remukati, iro rinovandudza simba remukati revhu. Polymer simba, nekudaro kuvandudza kutadza kushushikana kwedhaka uye kuwedzera iyo yekupedzisira kuomarara.
Iyo microstructure yepolymer mudhaka haina kuchinja kwenguva yakareba, uye inochengetedza kugadzikana kwakagadzikana, flexural uye compressive simba, uye yakanaka hydrophobicity. Iyo yekugadzira magadzirirwo eiyo inodzokororwa latex poda pasimba remataira anonamira yakaona kuti mushure mekunge iyo polymer yaoma kuita firimu, iyo polymer firimu inoumba chinochinjika chinongedzo pakati pedhaka netirairi kune rimwe divi, uye kune rimwe divi, iyo polymer mudhaka nyowani Wedzera iyo mhepo yedhaka uye inokanganisa kuumbwa uye kunyorova kwepasi, uyezve panguva yekumisikidza maitiro, uyezve panguva yekumisikidza maitiro, uyezve panguva yekumisikidza hydration. shrinkage ye simenti mune binder, izvo zvichabatsira pakuvandudza Bond simba rine rubatsiro rwakanaka.
Kuwedzera redispersible latex poda kudhaka kunogona kuvandudza zvakanyanya kusimba kwekubatanidza nezvimwe zvinhu, nekuti iyo hydrophilic latex poda uye yemvura chikamu chesimende yekumisikidza inopinda mumapores uye capillaries yematrix, uye latex hupfu inopinda mumapores uye capillaries. Iyo yemukati firimu inoumbwa uye yakasimba adsorbed pamusoro pepamusoro pe substrate, nokudaro kuve nechokwadi chesimba rakanaka rechisungo pakati pesimende zvinhu uye substrate.
Kugadziriswa kwe latex powder pakushanda kwedhaka kunokonzerwa nekuti latex powder ndeyepamusoro molecular polymer ine mapoka epolar. Kana latex poda yakasanganiswa neEPS particles, iyo isiri-polar segment mucheni huru ye latex powder polymer ichaita Physical adsorption ichaitika neiyo isiri-polar pamusoro peEPS. Mapoka epolar ari mupolymer anotariswa kunze pamusoro peEPS particles, kuitira kuti maEPS particles ashanduke kubva kuhydrophobicity kuenda kuhydrophilicity. Pamusana pekushandurwa kwepamusoro peEPS particles ne latex powder, inogadzirisa dambudziko rekuti EPS particles inoratidzirwa nyore nyore kumvura. Kuyangarara, dambudziko rekukura kukuru kwedhaka. Panguva ino, kana simende yawedzerwa uye yakasanganiswa, mapoka epolar adsorbed pamusoro peEPS particles anopindirana nezvikamu zvesimende uye anobatanidza zvakanyanya, kuitira kuti kushanda kweEPS insulation mortar kuwedzere. Izvi zvinoratidzwa mukuti zvimedu zveEPS zvinonyoroveswa nyore nyore nesamende paste, uye simba rekubatanidza pakati pezviviri rinovandudzwa zvikuru.
Nguva yekutumira: Mar-18-2023