O le a le vailaʻau o loʻo tuʻufaʻatasia o le pauta latex redispersible?

Redispersible polymer powders (RDP) o faʻafefiloi lavelave o polymers ma faʻaopoopoga o loʻo faʻaaogaina lautele i mea faufale, aemaise lava i le gaosiga o masini faʻafefiloi mago. O nei pauta e iai sona sao taua i le faʻaleleia atili o le faʻatinoga ma uiga o mea faufale eseese e pei o faʻapipiʻi taʻavale, grouts, faʻapipiʻiina o le tagata lava ia ma sima sima.

O vaega autu:

Polymer faavae:

Ethylene vinyl acetate (EVA): EVA copolymer e masani ona faʻaaogaina i le RDP ona o le sili ona lelei o mea e fai ai ata, faʻapipiʻi, ma fetuutuunai. O le vinyl acetate anotusi i totonu o le copolymer e mafai ona fetuunai e sui ai meatotino o le polymer.

Vinyl Acetate vs. Ethylene Carbonate: Faʻalagolago i manaoga faʻapitoa o le talosaga, e mafai e tagata gaosi oloa ona faʻaogaina le ethylene carbonate nai lo le vinyl acetate. O le Ethylene carbonate ua faʻaleleia atili le vai faʻafefe ma pipii i tulaga susu.

Acrylics: O polymers akrilik, e aofia ai ma acrylic mama po'o copolymers, o lo'o fa'aogaina mo lo latou tulaga fa'apitoa e tete'e ai i le tau, tumau, ma le fa'aogaina. Ua lauiloa i latou mo le tuʻuina atu o le pipii lelei i mea eseese.

Colloid puipuia:

Hydroxypropyl methylcellulose (HPMC): HPMC o se colloid puipuia e masani ona faʻaaogaina i le RDP. E faʻaleleia ai le toe faʻasalalauina o meaʻai polymer ma faʻaleleia ai mea uma o le paʻu.

Polyvinyl alcohol (PVA): PVA o se isi colloid puipuia e fesoasoani i le mautu ma le faʻasalalauina o vaega polymer. E iai foi sona sao i le puleaina o le viscosity o le pauta.

fa'apipi'i:

Dibutyl Phthalate (DBP): DBP o se faʻataʻitaʻiga o se palasitika e masani ona faʻaopoopo i le RDP e faʻaleleia ai le fetuutuunai ma le gaioiga. E fesoasoani e fa'aititia le vevela suiga tioata o le polymer, ma fa'asili atili ai.

fa'atumu:

Calcium Carbonate: E mafai ona faʻaopoopo mea faʻapipiʻi e pei o le calcium carbonate e faʻaleleia ai le tele o paʻu ma maua ai se auala taugofie e faʻafetaui ai meatotino e pei o le lanu, porosity ma le opacity.

Stabilizers ma antioxidants:

Stabilizers: O nei mea e faʻaaogaina e puipuia ai le faʻaleagaina o le polymer i le taimi o le teuina ma le gaosiga.

Antioxidants: Antioxidants puipuia le polymer mai oxidative degradation, faʻamautinoa le umi o le RDP.

Galuega a vaega ta'itasi:

Polymer faavae: Tuuina atu ata-fausia meatotino, adhesion, fetuutuunai ma le malosi masini i le oloa mulimuli.

Colloid puipuia: Faʻaleleia le toe faʻasalalauina, mautu ma faʻasalalauina o vaega polymer.

Plasticizer: Faʻaleleia le fetuutuunai ma le faʻaogaina.

Fa'atumu: Fetuuna'i mea totino e pei o le lanu, porosity, ma le opacity.

Stabilizers ma antioxidants: Puipuia le faaleagaina o polymer i le taimi o le teuina ma le gaosiga.

i le faaiuga:

Redispersible polymer powder (RDP) o se mea faʻapitoa ma taua i mea fau fale faʻaonapo nei. O lona vailaʻau vailaʻau, e aofia ai polymers e pei o le EVA poʻo le acrylic resins, colloids puipui, plasticizers, fillers, stabilizers ma antioxidants, ua faʻatulagaina ma le faʻaeteete e faʻafetaui manaoga faʻapitoa o talosaga taʻitasi. O le tu'ufa'atasia o nei vaega e fesoasoani e fa'aleleia atili ai le toe fa'asalalauina o le pa'u, malosi fa'amau, fetuutuuna'i ma le fa'atinoga atoa i fa'asusu fa'afefiloi mago.


Taimi meli: Tes-18-2023