Na Mea Maka o ka pauda Latex hou

ʻO Redispersed latex pauka (RDP) he ʻano o ka pauka emulsion polymer i hoʻohana nui ʻia i ka ʻoihana kūkulu no nā noi e like me nā mea hoʻopili i hoʻopaʻa ʻia i ka sima, nā mea hoʻohui ponoʻī, a me nā ʻōnaehana waho a me nā ʻōnaehana hoʻopau. Hana ʻia nā RDP ma ka hoʻomaloʻo ʻana i kahi emulsion polymer, ʻo ia ka hui ʻana o ka wai, ka monomer a i ʻole ka hui ʻana o nā monomers, kahi surfactant, a me nā mea hoʻohui like ʻole. Ma kēia ʻatikala, e kūkākūkā mākou i nā mea maka i hoʻohana mau ʻia e hana i nā RDP.

1. Monomers Hiki ke ʻokoʻa nā monomers i hoʻohana ʻia i ka hana ʻana i nā RDP ma muli o nā waiwai i makemake ʻia o ka huahana hope. ʻO nā monomers maʻamau ka styrene, butadiene, acrylic acid, methacrylic acid, a me kā lākou mau mea hoʻohui. ʻO Styrene-butadiene rubber (SBR) kahi koho kaulana no nā RDP ma muli o kona hoʻopili maikaʻi ʻana, kūpaʻa wai, a me ka lōʻihi.
2. Hoʻohana ʻia nā Surfactants i ka hana ʻana i nā RDP e hoʻopaʻa i ka emulsion a pale i ka coagulation a i ʻole flocculation. ʻO nā surfactants maʻamau i hoʻohana ʻia i nā RDP e komo pū me nā surfactants anionic, cationic, a me nā nononionic. ʻO nā surfactants Anionic ka mea maʻamau i hoʻohana ʻia i nā RDP, no ka mea, hāʻawi lākou i ka paʻa emulsion maikaʻi a me ka hoʻohālikelike ʻana me nā mea cementitious.
3. Hoʻohana ʻia nā Stabilizers e pale i nā ʻāpana polymer i loko o ka emulsion mai ka hui ʻana a i ʻole ka hōʻuluʻulu ʻana i ka wā mālama a me ka lawe ʻana. ʻO nā mea hoʻopaʻa maʻamau i hoʻohana ʻia i nā RDP me ka polyvinyl alcohol (PVA), hydroxyethyl cellulose (HEC), a me carboxymethyl cellulose (CMC).
4. Hoʻohana ʻia nā mea hoʻomaka e hoʻomaka i ka hopena polymerization ma waena o nā monomers i ka emulsion. ʻO nā mea hoʻomaka maʻamau i hoʻohana ʻia i nā RDP me nā mea hoʻomaka redox, e like me ka potassium persulfate a me ka sodium bisulfite, a me nā mea hoʻomaka wela, e like me azobisisobutyronitrile.
5. Hoʻohana ʻia nā mea neutralizing e hoʻoponopono i ka pH o ka emulsion i kahi pae kūpono no ka polymerization a me ke kūpaʻa. Hoʻohana ʻia nā mea hoʻokaʻawale maʻamau i nā RDP, ʻo ia ka ammonia, sodium hydroxide, a me ka potassium hydroxide.
6. Hoʻohana ʻia nā mea hana Crosslinking e hoʻopili i nā kaulahao polymer i loko o ka emulsion, hiki ke hoʻomaikaʻi i nā waiwai mechanical a me ka pale wai o ka huahana hope. ʻO nā mea hoʻopili maʻamau i hoʻohana ʻia i nā RDP me ka formaldehyde, melamine, a me ka urea.
7. Hoʻohana ʻia nā Plasticizers e hoʻomaikaʻi i ka maʻalahi a me ka hana o nā RDP. ʻO nā mea plasticizer maʻamau i hoʻohana ʻia i nā RDP me ka polyethylene glycol (PEG) a me ka glycerol.
8. Hoʻohui ʻia nā Fillers Fillers i nā RDP e hoʻomaikaʻi i kā lākou mau waiwai mechanical a hōʻemi i ke kumukūʻai. ʻO nā mea hoʻopihapiha maʻamau i hoʻohana ʻia i nā RDP me ka calcium carbonate, talc, a me ka silica.
9. Hoʻohui ʻia nā Pigments i nā RDP e hāʻawi i ke kala a hoʻomaikaʻi i ka nani o ka huahana hope. ʻO nā puaʻa maʻamau i hoʻohana ʻia i nā RDP me ka titanium dioxide a me ka hao hao.

I ka hopena, hiki ke ʻokoʻa nā mea maka i hoʻohana ʻia i ka hana ʻana i nā RDP ma muli o nā waiwai i makemake ʻia o ka huahana hope. ʻO nā monomer, surfactants, stabilizers, initiators, neutralizing agents, crosslinking agents, plasticizers, fillers, a me nā puaʻa e hoʻohana mau ʻia i ka hana ʻana i nā RDP.