Yemukati nekunze madziro putty poda, tile inonamira, tile inonongedza agent, yakaoma poda interface mumiriri, yekunze yekupisa yekuvharisa dhaka yekunze kwemadziro, inozvimisa-leveling dhaka, kugadzirisa dhaka, dhaka rekushongedza, dhaka risina mvura kunze kwekupisa kwekupisa kwakaoma-musanganiswa dhaka.
Mudhaka, ndeye kuvandudza brittleness, yakakwira elastic modulus uye kumwe kusasimba kwechinyakare simende dhaka, uye kupa dhaka resimende nekushanduka kuri nani uye kusimba kwechisungo chesimba, kuitira kuramba uye kunonoka chizvarwa chekutsemuka kwesamende. Sezvo iyo polymer uye dhaka zvinoumba interpenetrating network chimiro, inoenderera polymer firimu inoumbwa mumapores, iyo inosimbisa chisungo pakati peaggregates uye inovhara mamwe pores mudhaka, saka yakagadziridzwa dhaka mushure mekuoma iri nani pane simende dhaka. Pane kuvandudzika kukuru.
Basa re redispersible latex poda mu putty rinonyanya mune zvinotevera zvinhu:
1. Kuvandudza adhesion uye mechanical properties ye putty. Redispersible latex poda inonamira yehupfu inogadzirwa kubva kune yakakosha emulsion (yakakwira molecular polymer) mushure mekupfapfaidza kuoma. Iyi poda inogona kukurumidza kupararira mu emulsion mushure mekusangana nemvura, uye ine maitiro akafanana neyokutanga emulsion, ndiko kuti, inogona kuumba firimu mushure mokunge mvura inoputika. Iyi firimu ine yakakwira kuchinjika, yakakwira mamiriro ekunze uye kuramba kune akasiyana-siyana High adhesion kune substrates. Mukuwedzera, iyo hydrophobic latex poda inogona kuita kuti dhaka risapinde mvura.
2. Kuvandudza kubatanidzwa kweputty, kupikisa kwakanyanya, alkali kuramba, kupfeka kusagadzikana, uye kuwedzera simba rekushanduka-shanduka.
3. Kuvandudza kusapinda kwemvura uye kupera kweputty.
4. Kuvandudza kuchengetwa kwemvura kweputty, kuwedzera nguva yakazaruka, uye kunatsiridza kushanda.
5. Kuvandudza kupikisa kweputty uye kuwedzera kusimba kweputty.
2. Basa rekudhindwazve latex poda mukunamira kwetairi rinonyanya mune zvinotevera zvinhu:
1. Sezvo kuwanda kwesamende kunowedzera, simba rekutanga rekunamatira tile rinowedzera. Panguva imwecheteyo, kusimba kwekunamatira mushure mekunyudzwa mumvura uye kusimba kwekunamira kwesimba mushure mekukwegura kwekupisa kunowedzerawo. Kuwanda kwesamende kunofanira kuva pamusoro pe35%.
2. Nekuwedzera kwehuwandu hwehupfu hwelatex hunogona kudzokororwa, kusimba kwechisungo mushure mekunyura mumvura uye kusimba kwechisungo mushure mekuchembera kwekupisa kwekunamatira tile kunowedzera zvakakodzera, asi kusimba kwechisungo mushure mekukwegura kwekushisa kunowedzera zvakajeka.
3. Nekuwedzera kwehuwandu hwe cellulose ether, simba rinosungirirwa rekunamatira tile mushure mekuchembera kwekushisa kunowedzera, uye simba rekunamatira rinoputika mushure mekunyura mumvura rinotanga kuwedzera uye rinoderera. Mhedzisiro yacho yakanakisa kana iyo cellulose ether yemukati yakatenderedza 0.3%.
Paunenge uchishandisa redispersible latex powder, tinofanira kutarisisa kuwanda kwekushandisa, kuitira kuti inyatso kutamba basa rayo.
Nguva yekutumira: Jun-05-2023