Raw Materials Of Redispersed Latex Powder

Redispersed latex powder (RDP) imhando yepolymer emulsion powder iyo inoshandiswa zvakanyanya muindasitiri yekuvaka yezvikumbiro senge simende-based tile adhesives, self-leveling makomisheni, uye ekunze kuvharirwa uye kupedza masisitimu. RDPs inogadzirwa nekupfapfaidza kuomesa emulsion yepolymer, inova musanganiswa wemvura, monomer kana musanganiswa wemamonomers, surfactant, uye akasiyana ekuwedzera. Muchinyorwa chino, tichakurukura izvo mbishi zvinhu zvinowanzo shandiswa kugadzira RDPs.

1. Monomers Iwo mamonomers anoshandiswa mukugadzirwa kweRDPs anogona kusiyana zvichienderana nezvinodiwa zvechigadzirwa chekupedzisira. Zvinowanzoshandiswa monomers zvinosanganisira styrene, butadiene, acrylic acid, methacrylic acid, uye zvinobva kwavari. Styrene-butadiene rubber (SBR) isarudzo yakakurumbira yeRDPs nekuda kwekunamira kwayo kwakanaka, kusamira kwemvura, uye kusimba.
2. Surfactants Surfactants inoshandiswa mukugadzirwa kweRDPs kudzikamisa emulsion uye kudzivirira coagulation kana flocculation. Zvakajairika surfactants anoshandiswa muRDPs anosanganisira anionic, cationic, uye nonionic surfactants. Anionic surfactants ndiyo inonyanya kushandiswa mhando muRDPs, sezvo ichipa yakanaka emulsion kugadzikana uye kuenderana necementitious zvinhu.
3. Stabilizers Stabilizers inoshandiswa kudzivirira iyo polymer particles mu emulsion kubva pakubatana kana kuunganidza panguva yekuchengetedza uye yekufambisa. Zvakajairwa stabilizers anoshandiswa muRDPs anosanganisira polyvinyl doro (PVA), hydroxyethyl cellulose (HEC), uye carboxymethyl cellulose (CMC).
4. Initiators Initiators inoshandiswa kutanga iyo polymerization reaction pakati pemamonomers mune emulsion. Matangiro akajairika anoshandiswa muRDP anosanganisira redox intiators, senge potassium persulfate uye sodium bisulfite, uye thermal initiators, senge azobisisobutyronitrile.
5. Neutralizing agents Neutralizing agents anoshandiswa kugadzirisa pH ye emulsion kusvika padanho rakakodzera repolymerization uye kugadzikana. Zvakajairika neutralizing agents anoshandiswa muRDPs anosanganisira ammonia, sodium hydroxide, uye potassium hydroxide.
6. Crosslinking agents Crosslinking agents anoshandiswa kuyambuka cheni dzepolymer mu emulsion, iyo inogona kuvandudza ma mechanic zvivakwa uye kuramba kwemvura kwechigadzirwa chekupedzisira. Zvakajairika crosslinking agents anoshandiswa muRDPs anosanganisira formaldehyde, melamine, uye urea.
7. Plasticizers Plasticizers anoshandiswa kuvandudza kushanduka uye kushanda kweRDPs. Mapurasitiki akajairika anoshandiswa muRDP anosanganisira polyethylene glycol (PEG) uye glycerol.
8. Fillers Fillers anowedzerwa kuRDPs kuti vavandudze ma mechanic zvivakwa uye kuderedza mutengo. Mafirita akajairika anoshandiswa muRDPs anosanganisira calcium carbonate, talc, uye silica.
9. Pigments Pigment inowedzerwa kuRDPs kupa ruvara uye kugadzirisa aesthetics yechigadzirwa chekupedzisira. Kazhinji pigment inoshandiswa muRDPs inosanganisira titanium dioxide uye iron oxide.

Mukupedzisa, izvo zvigadzirwa zvinoshandiswa mukugadzirwa kweRDP zvinogona kusiyana zvichienderana nezvinodiwa zvechigadzirwa chekupedzisira. Monomers, surfactants, stabilizers, initiators, neutralizing agents, crosslinking agents, plasticizers, fillers, uye pigment zvese zvinowanzo shandiswa mukugadzirwa kweRDPs.