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Ndezvipi zvikamu zve redispersible emulsion powder

Ndezvipi zvikamu zve redispersible emulsion powder

Redispersible Emulsion Powder (RDP) inowanzo umbwa nezvikamu zvakakosha zvakati wandei, chimwe nechimwe chichishanda chakananga chinangwa mukugadzira. Kunyange kuumbwa chaiko kuchigona kusiyana zvichienderana nemugadziri uye chinangwa chekushandisa, izvo zvekutanga zveRDP zvinowanzo sanganisira:

  1. Polymer Base: Chinhu chikuru cheRDP i polymer yakagadzirwa, iyo inoumba musana wehupfu. Iyo inonyanya kuzivikanwa polymer inoshandiswa muRDP ndeye vinyl acetate-ethylene (VAE) copolymer. Mamwe mapolymers akadai sevinyl acetate-vinyl versatate (VA/VeoVa) copolymers, ethylene-vinyl chloride (EVC) copolymers, uye acrylic polymers anogonawo kushandiswa zvichienderana nezvinodiwa.
  2. Protective Colloids: RDP inogona kunge iine macolloid anodzivirira akadai se cellulose ethers (semuenzaniso, hydroxypropyl methylcellulose), polyvinyl doro (PVA), kana starch. Aya ma colloids anobatsira kudzikamisa emulsion panguva yekugadzira nekuchengetedza, kudzivirira kugadzikana kana sedimentation yemapolymer particles.
  3. Plasticizers: Plasticizers anowedzerwa kuRDP maumbirwo ekuvandudza kuchinjika, kushanda, uye kunamatira. Mapurasitiki akajairika anoshandiswa muRDP anosanganisira glycol ethers, polyethylene glycols (PEGs), uye glycerol. Izvi zvinowedzera zvinobatsira kukwirisa mashandiro uye kugadzirisa maitiro eRDP mune akasiyana maapplication.
  4. Dispersing Agents: Vanoparadzira vamiririri vanoshandiswa kuona yunifomu kupararira uye kudhindwazve kweRDP zvimedu mumvura. Aya maajenti anowedzera kunyorova uye kupararira kwehupfu mumasisitimu ane aqueous, zvichiita kuti zvive nyore kuisirwa mumagadzirirwo uye kugadzikana kwakagadziridzwa kwezvinozopararira.
  5. Fillers uye Additives: RDP maumbirwo anogona kunge aine mafirita uye ekuwedzera senge calcium carbonate, silica, kaolin, kana titanium dioxide. Izvi zvinowedzera zvinobatsira kuvandudza mashandiro, manyorerwo, uye kutaridzika kweRDP mune chaiyo maapplication. Vanogonawo kushanda sezvinowedzera kana zvinoshanda zvinowedzera kusimudzira zvivakwa zvakaita sepacity, kusimba, kana rheology.
  6. Surface Active Agents: Surface inoshanda maajenti kana ma surfactants anogona kuwedzerwa kune RDP maumbirwo ekuvandudza kunyorova, kupararira, uye kuenderana nezvimwe zvikamu mukuumbwa. Aya maajenti anobatsira kuderedza kushushikana kwepasi uye kukurudzira kudyidzana pakati peRDP zvimedu uye yakatenderedza svikiro, kuve nechokwadi chekupararira kweyunifomu uye kushanda kunobudirira mumashandisirwo.
  7. Anti-Foaming Agents: Anti-foaming agents anogona kuverengerwa muRDP mafomati kudzivirira kuumbwa kwefuro panguva yekugadzira kana kushandisa. Aya maajenti anobatsira kudzikisira kupindirwa kwemhepo uye kuvandudza kugadzikana uye kuenderana kweRDP dispersions, kunyanya mune yakakwira-shear kusanganisa maitiro.
  8. Zvimwe Zvinowedzera: Zvichienderana nezvinodiwa uye maitiro ekuita kweRDP maumbirwo, zvimwe zvinowedzera senge cross-linking agents, stabilizers, antioxidants, kana colorants zvinogonawo kuiswa. Izvi zvinowedzera zvinobatsira kugadzirisa zvivakwa uye mashandiro eRDP kune chaiwo maapplication uye ekupedzisira-mushandisi zvinodiwa.

izvo zvinoumba redispersible emulsion poda inoshanda synergistically kuti ipe inodiwa zvivakwa zvakaita sekunamatira, kuchinjika, kuramba kwemvura, uye kushanda mumhando dzakasiyana dzekuvaka uye maapplication. Kusarudzwa uye kuumbwa kwezvikamu izvi zvakakosha kuti uwane kushanda kwakakwana uye kunaka mune zvigadzirwa zveRDP.


Nguva yekutumira: Feb-16-2024
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