Raw Khoom Ntawm Redispersed Latex Powder

Redispersed latex hmoov (RDP) yog ib hom polymer emulsion hmoov uas tau siv dav hauv kev tsim kho kev lag luam rau kev siv xws li cement-based tile adhesives, self-leveling compounds, thiab sab nrauv rwb thaiv tsev thiab xov tshuab. RDPs yog tsim los ntawm cov tshuaj tsuag kom qhuav lub polymer emulsion, uas yog sib tov ntawm dej, ib tug monomer los yog sib tov ntawm monomers, ib tug surfactant, thiab ntau yam additives. Hauv kab lus no, peb yuav tham txog cov khoom siv raw uas feem ntau siv los tsim RDPs.

1. Monomers Cov monomers siv hauv kev tsim cov RDPs tuaj yeem sib txawv nyob ntawm qhov xav tau ntawm cov khoom kawg. Feem ntau siv monomers suav nrog styrene, butadiene, acrylic acid, methacrylic acid, thiab lawv cov derivatives. Styrene-butadiene roj hmab (SBR) yog ib qho kev xaiv nrov rau RDPs vim nws qhov adhesion zoo, dej tsis kam, thiab kav ntev.
2. Surfactants Surfactants yog siv nyob rau hauv zus tau tej cov RDPs stabilize lub emulsion thiab tiv thaiv coagulation los yog flocculation. Feem ntau surfactants siv hauv RDPs suav nrog anionic, cationic, thiab nonionic surfactants. Anionic surfactants yog hom siv ntau tshaj plaws hauv RDPs, vim tias lawv muab cov emulsion ruaj khov thiab sib haum nrog cov ntaub ntawv cementitious.
3. Stabilizers Stabilizers yog siv los tiv thaiv cov khoom polymer hauv cov emulsion los ntawm coalescing los yog aggregating thaum lub sij hawm cia thiab tsheb thauj mus los. Cov stabilizers feem ntau siv hauv RDPs suav nrog polyvinyl cawv (PVA), hydroxyethyl cellulose (HEC), thiab carboxymethyl cellulose (CMC).
4. Initiators Initiators yog siv los pib cov tshuaj tiv thaiv polymerization ntawm cov monomers hauv emulsion. Cov thawj pib siv hauv RDPs suav nrog cov neeg pib redox, xws li potassium persulfate thiab sodium bisulfite, thiab thermal pib, xws li azobisisobutyronitrile.
5. Neutralizing agents Neutralizing agents yog siv los kho cov pH ntawm emulsion mus rau theem tsim nyog rau polymerization thiab stability. Cov neeg ua haujlwm nruab nrab siv hauv RDPs suav nrog ammonia, sodium hydroxide, thiab potassium hydroxide.
6. Crosslinking agents Crosslinking agents yog siv los crosslinking polymer chains hauv emulsion, uas tuaj yeem txhim kho cov khoom siv hluav taws xob thiab dej tsis kam ntawm cov khoom kawg. Cov tshuaj sib txuas sib txuas uas siv hauv RDPs suav nrog formaldehyde, melamine, thiab urea.
7. Plasticizers Plasticizers yog siv los txhim kho qhov yooj thiab ua haujlwm ntawm RDPs. Cov plasticizers uas siv hauv RDPs suav nrog polyethylene glycol (PEG) thiab glycerol.
8. Fillers Fillers tau ntxiv rau RDPs los txhim kho lawv cov khoom siv kho tshuab thiab txo nqi. Feem ntau siv hauv RDPs suav nrog calcium carbonate, talc, thiab silica.
9. Pigments Pigments yog ntxiv rau RDPs los muab cov xim thiab txhim kho kev zoo nkauj ntawm cov khoom kawg. Cov xim uas siv hauv RDPs suav nrog titanium dioxide thiab hlau oxide.

Hauv kev xaus, cov khoom siv raw siv hauv kev tsim cov RDPs tuaj yeem sib txawv raws li qhov xav tau ntawm cov khoom kawg. Monomers, surfactants, stabilizers, initiators, neutralizing agents, crosslinking agents, plasticizers, fillers, thiab pigments yog txhua yam siv los tsim RDPs.