Kuwedzera mapolymers anogona kuvandudza kusamira, kuoma, kutsemuka kuramba uye kukanganisa kuramba kwedhaka uye kongiri. Permeability uye zvimwe zvinhu zvine mhedzisiro yakanaka. Zvichienzaniswa nekuvandudza simba rekushanduka-shanduka uye simba rekubatanidza redhaka uye kuderedza brittleness yaro, mhedzisiro ye redispersible latex powder pakuvandudza kuchengetwa kwemvura kwedhaka uye kusimbisa kubatana kwayo kunogumira.
Redispersible polymer poda inowanzogadziriswa nekupfapfaidza kuomesa nekushandisa mamwe emulsion aripo. Iyo nzira ndeyekutanga kuwana polymer emulsion kuburikidza neemulsion polymerization, uye wozoiwana kuburikidza nekupfapfaidza kuomesa. Kuti udzivise kusanganiswa kwelatex poda uye kugadzirisa mashandiro asati apfapfaidza, zvimwe zvinowedzera zvinowanzowedzerwa, senge bactericides, spraying drying additives, plasticizers, defoamers, nezvimwewo, panguva yekupfapfaidza kuomesa, kana ichangobva kuoma. Mushandi wekusunungura anowedzerwa kudzivirira kuungana kwehupfu panguva yekuchengetedza.
Nekuwedzera kwezviri mukati redispersible latex poda, iyo system yese inokura yakananga kupurasitiki. Kana iri yakakwira latex poda yemukati, chikamu chepolymer mudhaka rakarapirwa zvishoma nezvishoma chinodarika iyo inorganic hydration chigadzirwa, dhaka rinopinda shanduko yemhando uye rinova rakasimba muviri, uye iyo hydration chigadzirwa chesimende inova "yekuzadza". . Iyo firimu yakaumbwa neiyo redispersible latex poda yakagoverwa pachiratidziro inoita rimwe basa rakakosha, ndiko kuti, kusimudzira kunamatira kune zvakabatika zvinhu, izvo zvakakodzera kune dzimwe nzvimbo dzakaoma-kunamira, dzakadai seyakanyanya kuderera kunyura kwemvura kana Kusiri- nzvimbo dzinotora mvura (senge kongiri yakatsetseka uye simende, mahwendefa esimbi, zvidhinha zvine homogeneous, nzvimbo dzezvidhinha dzakasimbiswa, nezvimwewo) nenzvimbo dzakasimukira. (zvakadai semapuranga eEPS, mapurasitiki, nezvimwewo) zvinonyanya kukosha. Nekuti kusungirirwa kweanonamira kune zvigadzirwa kunowanikwa kuburikidza nemusimboti wekumisikidza kwemuchina, ndiko kuti, iyo hydraulic slurry inopinda mukati memipata yezvimwe zvinhu, zvishoma nezvishoma inoomesa, uye pakupedzisira inonamira dhaka kwairi sekiyi yakaiswa mukiyi. Kumusoro kwechinyorwa, chepamusoro chakaoma-ku-chisungo chepamusoro, hachikwanisi kupinda mukati memukati mechinhu kuti chigadzire yakanaka mechanical embedding, kuitira kuti dhaka rine chete inorganic adhesives risati ranyatsobatanidzwa kwariri, uye kusungirirwa. nzira yepolymer yakasiyana. , Iyo polymer inosungirirwa pamusoro pezvimwe zvinhu kuburikidza ne intermolecular force, uye haibvi pane porosity yepamusoro (zvechokwadi, iyo yakaoma uye iyo yakawedzera yekubatana kwepamusoro ichavandudza kunamatira).
Nguva yekutumira: Mar-07-2023