Redispersible latex poda
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, yakakwirira elastic modulus uye humwe hutera hwechinyakare simende dhaka, uye kupa dhaka resimende nekushanduka kuri nani uye kusimba kwechisungo chesimba, kuitira kuramba uye kunonoka kugadzirwa kwedhaka resimende.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.
Imwe: Basa redhispersible latex poda mu putty rinonyanya 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, kureva kuti, firimu inogona kuumbwa 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.
Zviviri: Basa redhispersible latex poda mudhaka rinonyanya zvinotevera zvinhu
1. Kuvandudza simba rekumanikidza uye kushanduka kwesimba redhaka.
2. Kuwedzerwa kwelatex powder kunowedzera kuwedzera kwehuwandu hwehutu, zvichiita kuti kuwedzere kuoma kwevhu, uye kunopawo dhaka nemafungiro akanaka ekuparadzira kudzvinyirira.
3. Kuvandudza kushanda kwekubatana kwedhaka.Iyo yekubatanidza michina yakavakirwa pakushambadza uye kupararira kwe macromolecules pane inonamira pamusoro.Panguva imwecheteyo, poda yerabha ine kumwe kupindira uye inopinda zvizere pamusoro pezvinhu zvepasi ne cellulose ether, kuitira kuti nzvimbo dzepamusoro dzechigadziko uye purasita itsva zvive pedyo, nokudaro kuvandudza Adsorption kunowedzera kushanda kwayo.
4. Deredza elastic modulus yedhaka, kunatsiridza deformation kugona uye kuderedza kuputika chiitiko.
5. Kuvandudza kusamira kwekupfeka kwedhaka.Kuvandudzwa kwekupikiswa kwekupfeka kunonyanya kukonzerwa nekuvapo kwehumwe huwandu hweglue pamusoro pevhu.Iyo glue poda inoshanda sechisungo, uye chimiro che omentum chinoumbwa nehupfu hweglue chinogona kupfuura nemakomba uye kuputika mudhaka resimende.Inovandudza chisungo pakati peiyo base zvinhu uye simende hydration zvigadzirwa, nekudaro kuwedzera kupfeka kuramba.
6. Ipa dhaka zvakanakisa alkali kuramba.
Zvitatu: Basa redhispersible latex poda mumatairi adhesives inonyanya kutevedzera zvinotevera
1. Sezvo huwandu hwesamende huchiwedzera, simba rekutanga rekunamatira tile rinowedzera, uye panguva imwechete, simba rekunamatira rinoputika mushure mekunyudzwa mumvura uye simba rekunamatira rinoputika mushure mekukwegura kwekupisa kunowedzerawo.Kuwanda kwesamende kunofanira kuva pamusoro pe35%.
2. Nekuwedzera kwehuwandu hwehuwandu hwehupfu hwe latex powder, simba rekusungirirwa kwechisungo chekunamatira tile mushure mekunyudzwa mumvura uye kusimba kwechisungo mushure mekukwegura kwekupisa kunowedzera maererano, asi kuwedzera kwekusimba kwechisungo mushure mekukwegura kwekupisa kunenge kwakaderera.pachena.
3. Nekuwedzera kwehuwandu hwe cellulose ether, simba rekunamatira rinosungirirwa rekunamatira tile mushure mekukwegura kwekupisa kunowedzera, uye simba rekunamatira rinowedzera mushure mekunyura mumvura rinotanga kuwedzera uye rinoderera.Mhedzisiro yacho yakanyanya kunaka kana iyo cellulose ether yemukati yakatenderedza 0.3%.
Nokudaro, kana tichishandisa redispersible latex powder, tinofanira kubhadhara kune mari inoshandiswa, kuitira kuti tinyatsoita basa rayo.
Nguva yekutumira: Mar-28-2023