Chii chinonzi Redispersible Emulsion Powder?

Redispersible emulsion powder (RDP), inozivikanwawo se redispersible polymer poda, imhando yehupfu yemvura-based emulsion polymer. Inowanzo gadzirwa nekupfapfaidza kuomesa musanganiswa wepolymer dispersion, kazhinji yakavakirwa pavinyl acetate-ethylene (VAE) kana vinyl acetate-versatile (VAC/VeoVa) copolymers, ine akasiyana ekuwedzera akadai seanodzivirira colloids, surfactants, uye plasticizers.

Heano magadzirirwo emulsion emulsion poda inogadzirwa uye maitiro ayo akakosha:

Kugadzira Maitiro:

1. Polymer Emulsion: Emulsion yepolymer inogadzirwa nemapolymerizing monomers akadai sevinyl acetate, ethylene, uye mamwe macomonomer pamberi pemvura uye emulsifiers. Kuita uku kunoguma nekuumbwa kwetunhu tudiki twepolymer twakaparadzirwa mumvura.
2. Kuwedzerwa kweZviwedzerwa: Zviwedzerwa zvakadai sekudzivirira colloids, surfactants, uye plasticizers zvinogona kuwedzerwa kune emulsion kugadzirisa maitiro ayo uye kushanda.
3. Kupfapfaidza Kuomeswa: Iyo polymer emulsion inobva yaiswa mune yekupfapfaidza dryer, iyo inoiswa atomu kuita madonhwe akanaka uye yakaomeswa nemhepo inopisa. Sezvo mvura inoputika, zvimedu zvakasimba zvepolymer zvinoumba, zvichiita kuti pave nehupfu hunoyerera.
4. Kuunganidza uye Packaging: Hupfu hwakaomeswa hunounganidzwa kubva pasi pemushini wekupfapfaidza, husefa kuti hubvise chero zvidimbu zvakakura, wozoiswa mukati kuti uchengete uye utakure.

Hunhu Hunokosha:

1. Particle Size: Redispersible emulsion powder inowanzo sanganisira spherical particles ane madhayamita kubva kune mashoma micrometer kusvika kumakumi emakiromita, zvichienderana nekugadzirwa kwakananga uye kuumbwa.
2. Mvura Redispersibility: Chimwe chezvinonyanya kukosha zveRDP ndiko kukwanisa kwayo kupararira mumvura kuti iite emulsion yakagadzikana kana yakasanganiswa nemvura. Izvi zvinobvumira kuti zvive nyore kubatanidzwa mumvura-based formulations sematope, adhesives, uye machira.
3. Polymer Zvemukati: RDP kazhinji ine yakakwira yezvinyorwa zvepolymer solids, kazhinji kubva pa50% kusvika 80% nehuremu, zvichienderana nerudzi rwepolymer uye magadzirirwo.
4. Kemikari Inoumbwa: Iyo kemikari yeRDP inosiyana zvichienderana nerudzi rwepolymer inoshandiswa uye chero zvimwe zvekuwedzera zvinosanganiswa panguva yekugadzira. Mapolymer akajairika anoshandiswa muRDP anosanganisira vinyl acetate-ethylene (VAE) copolymers uye vinyl acetate-versatile (VAC/VeoVa) copolymers.
5. Performance Properties: RDP inopa huwandu hwezvinhu zvinodikanwa kune maumbirwo, zvinosanganisira kunamira kwakagadziridzwa, kuchinjika, kuramba mvura, uye kusimba. Inokwidziridza kushanda, simba remuchina, uye kushanda kwezvinhu zvakasiyana-siyana zvekuvaka senge madhaka, mataira anonamira, marender, uye ega-leveling makomisheni.

Muchidimbu, redispersible emulsion powder (RDP) imhando yakasiyana-siyana yehupfu yemvura-based emulsion polymers inoshandiswa sekuwedzera mune zvakasiyana-siyana zvekuvaka uye kushandiswa kwemaindasitiri. Kugona kwayo kupararira mumvura, yakakwira polymer zvemukati, uye inodiwa maitiro ekuita inoita kuti ive chinhu chakakosha mukugadzirwa kwemhando yepamusoro uye yakasimba zvekuvaka.