Upfu hwelatex hunosanganiswazve chinhu chinoshandiswa zvakanyanya mukugadzira gelling, chinogona kuparadzirwa zvakaenzana mumvura kuti chigadzire emulsion mushure mekusangana nemvura. Kuwedzera upfu hwelatex hunosanganiswazve kunogona kuvandudza mashandiro ekuchengetedza mvura yemota yesimende yakasanganiswa, pamwe nekushanda kwekubatanidza, kuchinjika, kusapinda uye kuramba ngura kwemota yesimende yakaoma. Upfu hwelatex hunochinja kugadzikana uye kutsvedza kwesystem mumamiriro ekusanganisa mvura, uye kubatana kunovandudzwa nekuwedzera upfu hwelatex. Mushure mekuomesa, inopa ganda rakatsetseka uye rakakora rine simba rekubatana, uye inovandudza mhedzisiro yejecha, matombo nemaburi. , yakapfuma kuita firimu panzvimbo inopindirana, izvo zvinoita kuti zvinhu zvive nyore kuchinjika, inoderedza elastic modulus, inotora kushushikana kwekushanduka kwekupisa zvakanyanya, uye ine kuramba kwemvura muchikamu chekupedzisira, uye tembiricha yebuffer uye kuchinja kwezvinhu hazvienderane.
Kuumbwa kwefirimu repolymer rinoenderera mberi kwakakosha zvikuru pakushanda kwemortars dzesimende dzakagadziriswa nepolymer. Munguva yekugadzika nekuomesa simende, makomba mazhinji anogadzirwa mukati, ayo anova zvikamu zvisina simba zvesimende. Mushure mekunge upfu hwelatex hunonyungudika hwawedzerwa, upfu hwelatex hunobva hwapararira pakarepo kuita emulsion kana hwasangana nemvura, uye hunoungana munzvimbo ine mvura yakawanda (ndiko kuti, mugomba). Sezvo simende inogadzika uye ichioma, kufamba kwezvikamu zvepolymer kunowedzera kuganhurirwa, uye kumanikidzwa pakati pemvura nemhepo kunoita kuti zvienderane zvishoma nezvishoma. Kana zvikamu zvepolymer zvasangana, network yemvura inopwanya kuburikidza ne capillaries, uye polymer inogadzira firimu rinoenderera mberi rakatenderedza gomba, ichisimbisa nzvimbo idzi dzisina simba. Panguva ino, firimu repolymer harigone kungotamba basa re hydrophobic chete, asiwo haridzivise capillary, kuitira kuti zvinhu zvive ne hydrophobic yakanaka uye mhepo inoyerera.
Dura resimende risina polymer rakabatana zvisina kusimba. Kusiyana neizvi, dura resimende rakagadziriswa polymer rinoita kuti dura rese ribatane zvakasimba nekuda kwekuvapo kwefirimu repolymer, zvichiita kuti pave nehunhu huri nani hwemuchina uye hunodzivirira mamiriro ekunze. Mudura resimende rakagadziriswa dema relatex powder, upfu hwelatex hunowedzera porosity yedura resimende, asi hunoderedza porosity yenzvimbo yekuchinja pakati pedura resimende neaggregate, zvichiita kuti porosity yese yedura isachinje. Mushure mekunge dura relatex ragadzirwa kuita firimu, rinogona kuvharira zviri nani maburi ari mudura, zvichiita kuti chimiro chenzvimbo yekuchinja pakati pedura resimende neaggregate chive chakasimba, uye kuramba kwemuganho wedura relatex powder rakagadziriswa kunovandudzwa, uye kugona kurwisa kuora kwemidziyo inokuvadza kunowedzerwa. Ine mhedzisiro yakanaka pakuvandudza kugara kwenguva refu kwedura.
Nguva yekutumira: Kurume-14-2023