VAE Redispersible Latex Powder

Basic functions:

RDP Powder ichena kana isina-chena-inonyungudika mumvura poda inogadzirwa nespray-drying yakakosha mvura-based emulsion.

RDP hupfu inoumba firimu mushure mekupararira uye inoita sechipiri chekunamatira.Tiyo inodzivirira colloid inotorwa nedhaka system (haizoparadzwi nemvura mushure mekunge firimu raumbwa, kana "secondary dispersion").Tiye firimu-inogadzira polymer resinasa reinforcing material, inogoverwa mudhaka rose, nokudaro ichiwedzera kubatana, tiye anomanikidza simba uye flexural simba redhaka.

Kuwedzera kweRDP poda kusvika pakurebesa kwedhaka inonatsiridza kusimba kwedhaka, uye inopawo dhaka kuita kwakanaka kuparadzira kushushikana.Iyo yekubatanidza nzira inotsamira pane adsorption uye kupararira kwe macro mamorekuru ari panzvimbo inonamira.

Panguva imwecheteyo, theRDP ine mwero wakati wekupinda.Pamwe chete ne cellulose ether, inopinda zvizere pamusoro pezvinhu zvepasi, kuitira kuti chigadziko chepasi uye pamusoro pepurasita itsva zviri pedyo nekushanda kwepamusoro, nokudaro kushambadza Kuita kwayo kunowedzera zvakanyanya.Deredza elastic modulus uyedeform-kugona yedhaka, uye kuderedza kutsemuka.

Iyo abrasion resistance yedhaka:

Kupokana kweabrasion kunonyanya kukonzerwa nekuvapo kwehumwe huwandu hweglue pamusoro pevhu.Iyo rubber powder inoshanda sechisungo chekubatanidza.Iyo mesh chimiro chakaumbwa nehupfu yerabha inogona kupfuura nemumakomba uye inotsemuka mumatope esimende.Kuvandudza kusungirirwa kweiyo base zvinhu uye simende hydration chigadzirwa, nokudaro uchivandudza abrasion kuramba.Ipa dhaka zvakanakisa alkali kuramba.

Basa reRDP hupfu mu putty, dhaka uye tile glue:

Yemukati nekunze madziro putty poda, tile inonamira, tile yekubatanidza mumiriri, yakaoma poda interface mumiriri, madziro ekunze ekunze kwemafuta ekudzivirira dhaka, dhaka rinozvimisa, dhaka rekugadzirisa, dhaka rekushongedza, dhaka risina mvura uye kunze kwekupisa kwekupisa kwakaoma-musanganiswa dhaka.It ndeyekuvandudza brittleness uye yakakwirira elastic modulus yechinyakare simende dhaka, uye kupa dhaka resimende zviri nani kuchinjika uye kusimba kwekubatanidza kusimba kuramba uye kunonoka kugadzirwa kwesamende kutsemuka kwedhaka.Nekuti iyo polymer uye dhaka zvinoumba inopindirana network chimiro, inoenderera yepolymer firimu inoumbwa mumapores, iyo inosimbisa chisungo pakati peaggregates uye inovhara mamwe mapores mudhaka.Naizvozvo, iyo yakaomeswa yakagadziridzwa dhaka ine kuita kurinani pane simende dhaka.Pane kuvandudzika kukuru.

Basa reRDP hupfu mu putty inonyanya mune zvinotevera zvinhu:

1. Adhesion uye mechanical properties ye putty.RDPihupfu binder yakagadzirwa kubva kune yakakosha emulsion (yakakwirira molecular polymer) yakapfapfaidzwa-yakaomeswa.Iyi hupfu inogona kukurumidzakuparadzirwa zvakare kupinda mu emulsion mushure mekusangana nemvura, uye ine zvinhu zvakafanana nekutanga emulsion, kureva kuti, firimu inogona kuumbwa mushure mokunge mvura inoputika.Iyi firimu ine yakakwira kuchinjika, yakakwira mamiriro ekunze kuramba uye kuramba kune dzakasiyana-siyana Kunyanya kunamatira kune substrate.Mukuwedzera, iyo inodzivirira mvura yelatex poda inogona kuita kuti dhaka rive nekudzivirira mvura zvakanaka.

2. Kubatana kweputty, kupikisa kwakanyanya, alkali resistance, abrasion resistance, uye kuwedzeredzwa simba rekushanduka-shanduka.

3. Mvura uye permeability ye putty.

4. Kuchengetwa kwemvura kweputty, kuwedzera nguva yakazaruka, uye kushanda.

5. Impact resistance ye putty uye yakawedzera kusimba kwe putty.

Basa reRDP hupfu mudhaka inonyanya muzvikamu zvinotevera:

1. Kudzvinyirira simba uye flexural simba redhaka.

2. Kuwedzerwa kwelatex powder kusvika pakurebesa kwedhaka kunovandudza kukanganisa kuoma kwedhaka uye kunopawo dhaka rakanaka rekuparadzira kusagadzikana.

3. Kubata kwekubatana kwedhaka kunovandudzwa.Iyo yekubatanidza nzira inotsamira pane adsorption uye kupararira kwemacro molecules pachiso chinonamira.Panguva imwecheteyo, poda yerabha ine imwe chiyero chepermeability.Pamwe chete ne cellulose ether, inopinda zvizere pamusoro pezvinhu zvepasi, kuitira kuti chigadziko chepasi uye pamusoro pepurasita itsva zviri pedyo nekushanda kwepamusoro, nokudaro kushambadza Kuita kwayo kunowedzera zvakanyanya.

4. Deredza elastic modulus uyedeform-kugona yedhaka uye kuderedza kutsemuka.

5. Pfeka kuramba kwedhaka.Kupokana kweabrasion kunonyanya kukonzerwa nekuvapo kwehumwe huwandu hweglue pamusoro pevhu.Iyo rubber powder inoshanda sechisungo chekubatanidza.Iyo mesh chimiro chakaumbwa nehupfu yerabha inogona kupfuura nemumakomba uye inotsemuka mumatope esimende.Kuvandudza kusungirirwa kweiyo base zvinhu uye simende hydration chigadzirwa, nokudaro uchivandudza abrasion kuramba.

6. Ipa dhaka zvakanakisa alkali kuramba.