Upfu hweputty yemadziro yemukati nekunze, kunamira mataira, chinhu chinonongedzera mataira, chinhu chinonongedzera hupfu hwakaoma, chinhu chinodziisa kupisa chekunze chemadziro ekunze, chinhu chinozvienzanisa, chinhu chinogadzirisa, chinhu chinoshongedza, chinhu chinodziisa kupisa chekunze chekunze.
Mumota, chinangwa ndechekuvandudza kuputsika, elastic modulus uye zvimwe zvisina simba zvemota yechinyakare yesimende, uye kupa simende simende simba riri nani uye simba rekusunga, kuitira kudzivirira nekunonotsa kugadzirwa kwemota yesimende. Sezvo polymer nemota zvichiumba network inopindirana, firimu repolymer rinogara richiumbwa mumapores, izvo zvinosimbisa kubatana pakati pema aggregates uye zvinovhara mamwe mapores mumota, saka mota yakagadziriswa mushure mekuoma iri nani pane mota yesimende. Pane kuvandudzika kukuru.
Basa reupfu hwelatex hunonyungudika muputty rinonyanya kukosha mune zvinotevera:
1. Kuvandudza kunamira uye hunhu hwemuchina weputty. Upfu hwelatex hunosanganiswazve iguru rinonamira nehupfu rakagadzirwa kubva ku emulsion yakakosha (high molecular polymer) mushure mekuomeswa nespray. Upfu uhwu hunogona kusanganiswa nekukurumidza kuita emulsion mushure mekusangana nemvura, uye hune hunhu hwakafanana nehwekutanga, kureva kuti, hunogona kugadzira firimu mushure mekunge mvura yapera. Firimu iri rine kuchinjika kwakanyanya, rinodzivirira mamiriro ekunze zvakanyanya uye rinodzivirira kune akasiyana-siyana. Rinonamira zvakanyanya kune substrates. Pamusoro pezvo, upfu hwelatex hunonyungudika mumvura hunogona kuita kuti dhaka risapinde mvura zvakanyanya.
2. Kuvandudza kubatana kweputty, kuramba kwakanaka, kuramba alkali, kuramba kupera, uye kuwedzera simba reflexural.
3. Kuvandudza kusapinda mvura uye kupindira kweputty.
4. Kuvandudza kuchengetwa kwemvura kweputty, kuwedzera nguva yekuvhura, uye kuvandudza kushanda zvakanaka.
5. Kuvandudza kusimba kweputty uye kuwedzera kugara kwenguva refu kweputty.
2. Basa reupfu hwelatex hunonyungudika zvakare mukunamira mataira rinonyanya kuitika muzvinhu zvinotevera:
1. Sezvo huwandu hwesimende huchiwedzera, simba rekutanga renamira yemataira rinowedzera. Panguva imwe chete, simba renamira yekudhonza mushure mekunyudzwa mumvura uye simba renamira yekudhonza mushure mekupiswa rinowedzerawo. Huwandu hwesimende hunofanira kunge huri pamusoro pe35%.
2. Nekuwedzera kwehuwandu hwehupfu hwelatex hunonyungudika, simba rekubatanidza mushure mekunyikwa mumvura uye simba rekubatanidza mushure mekukwegura kwetiles rinowedzera zvinoenderana, asi simba rekubatanidza mushure mekukwegura kwekupisa rinowedzera zviri pachena.
3. Nekuwedzera kwehuwandu hwe cellulose ether, simba rekunamira re tile rinonamira mushure mekukwegura kwekupisa rinowedzera, uye simba rekunamira rinonamira mushure mekunyikwa mumvura rinotanga rawedzera uye rozoderera. Mhedzisiro yacho inonyanya kunaka kana huwandu hwe cellulose ether huri pa0.3%.
Pakushandisa upfu hwelatex hunonyungudika, tinofanira kutarisisa huwandu hwekushandiswa, kuitira kuti hukwanise kuita basa rahwo chaizvo.
Nguva yekutumira: Chikumi-05-2023