Akụrụngwa nke ntụ ntụ Latex agbasasịa

Redispersed latex ntụ ntụ (RDP) bụ ụdị polymer emulsion ntụ ntụ nke a na-ejikarị eme ihe na ụlọ ọrụ na-ewu ụlọ maka ngwa ndị dị ka adhesives tile nke simenti, ihe ndị na-edozi onwe ha, na mkpuchi mpụta na imecha usoro. A na-eme RDP site n'ịkpọsa emulsion polymer, nke bụ ngwakọta nke mmiri, monomer ma ọ bụ ngwakọta nke monomers, surfactant, na ihe mgbakwunye dị iche iche. N'isiokwu a, anyị ga-atụle ngwa ngwa ndị a na-ejikarị emepụta RDPs.

1. Ndị monomers ndị a na-eji na-emepụta RDP nwere ike ịdịgasị iche dabere na njirimara achọrọ nke ngwaahịa ikpeazụ. Ndị monomer ndị a na-ejikarị eme ihe gụnyere styrene, butadiene, acrylic acid, methacrylic acid, na usoro ha. Styrene-butadiene roba (SBR) bụ nhọrọ na-ewu ewu maka RDPs n'ihi nchikota ya dị mma, nkwụsị mmiri, na ogologo oge.
2. A na-eji Surfactants Surfactants na mmepụta nke RDPs iji mee ka emulsion kwụsie ike ma gbochie coagulation ma ọ bụ flocculation. Ihe ndị a na-ejikarị eme ihe na RDPs gụnyere anionic, cationic, na nonionic surfactants. Anionic surfactants bụ ụdị a na-ejikarị eme ihe na RDP, ebe ha na-enye nkwụsi ike emulsion dị mma na ndakọrịta na ihe cimenti.
3. A na-eji stabilizers stabilizers iji gbochie ụmụ irighiri ihe polymer dị na emulsion site na ikpokọta ma ọ bụ ịgbakọta n'oge nchekwa na njem. Ihe nkwụsi ike a na-ejikarị na RDPs gụnyere mmanya polyvinyl (PVA), hydroxyethyl cellulose (HEC), na carboxymethyl cellulose (CMC).
4. A na-eji ndị na-eme ihe mmalite malite mmeghachi omume polymerization n'etiti monomers na emulsion. Ndị mbido a na-ejikarị na RDP gụnyere ndị na-amalite redox, dị ka potassium persulfate na sodium bisulfite, na ndị na-ebu ọkụ, dị ka azobisisobutyronitrile.
5. A na-eji ndị na-emepụta ihe na-eme ka ndị na-emepụta ihe na-emepụta ihe na-eme ka a gbanwee pH nke emulsion na ọkwa kwesịrị ekwesị maka polymerization na nkwụsi ike. Ihe ndị a na-ejikarị eme ihe na RDP gụnyere amonia, sodium hydroxide, na potassium hydroxide.
6. A na-eji ndị na-eme ihe na-agafe agafe na-ejikọta ụdọ polymer dị na emulsion, nke nwere ike imeziwanye ihe eji arụ ọrụ na nguzogide mmiri nke ngwaahịa ikpeazụ. Ihe ndị na-emekọrịta ihe na-ejikarị eme ihe na RDPs gụnyere formaldehyde, melamine, na urea.
7. A na-eji ihe ndị na-emepụta ihe na-emepụta ihe na-emepụta ihe na-emepụta ihe na-eme ka ọ dịkwuo mma na ịrụ ọrụ nke RDPs. Plasticizers ndị a na-ejikarị na RDPs gụnyere polyethylene glycol (PEG) na glycerol.
8. A na-agbakwunye Fillers Fillers na RDPs iji meziwanye akụrụngwa ha ma belata ọnụ ahịa. Ihe eji eme ihe na RDPs gụnyere calcium carbonate, talc, na silica.
9. A na-agbakwunye pigmenti pigment na RDPs iji nye agba ma melite mma nke ngwaahịa ikpeazụ. Pigmenti ndị a na-ejikarị eme ihe na RDP gụnyere titanium dioxide na iron oxide.

N'ikpeazụ, ihe ndị a na-eji na-emepụta RDP nwere ike ịdịgasị iche dabere na ihe ndị a chọrọ nke ngwaahịa ikpeazụ. Monomers, surfactants, stabilizers, initiators, neutralizing agents, crosslinking agents, plasticizers, fillers, and pigments bụ ndị a na-ejikarị eme ihe na mmepụta nke RDPs.