He aha ka Redispersible Emulsion Powder?

ʻO ka pauka emulsion redispersible (RDP), ka mea i kapa ʻia ʻo ka pauka polymer redispersible, he ʻano pauka o ka polymer emulsion i hoʻokumu ʻia i ka wai. Hana ʻia ia ma ka hoʻomaloʻo ʻana i ka hui ʻana o kahi polymer dispersion, ma ke ʻano he vinyl acetate-ethylene (VAE) a i ʻole vinyl acetate-versatile (VAC/VeoVa) copolymers, me nā mea hoʻohui like ʻole e like me nā colloids pale, surfactants, a me nā plasticizers.

Eia ka hana ʻana o ka pauka emulsion redispersible a me kāna mau hiʻohiʻona nui:

Kaʻina hana:

1. Polymer Emulsion: Hoʻomākaukau ʻia kahi emulsion polymer e ka polymerizing monomers e like me ka vinyl acetate, ethylene, a me nā comonomers ʻē aʻe i mua o ka wai a me nā emulsifiers. ʻO kēia kaʻina hana i ka hana ʻana i nā ʻāpana polimer liʻiliʻi i hoʻopuehu ʻia i ka wai.
2. Hoʻohui i nā mea hoʻohui: Hiki ke hoʻohui ʻia nā mea hoʻohui e like me nā colloids pale, surfactants, a me nā plasticizers i ka emulsion e hoʻololi i kāna mau waiwai a me kāna hana.
3. ʻO ka hoʻomaloʻo ʻana: Hoʻokomo ʻia ka emulsion polymer i loko o kahi mea maloʻo e hoʻoheheʻe ʻia, kahi e hoʻomoʻi ʻia i loko o nā kulu liʻiliʻi a maloʻo me ka ea wela. Ke hoʻoheheʻe ʻia ka wai, hana ʻia nā ʻāpana paʻa o ka polymer, ka hopena i kahi pauka kahe manuahi.
4. ʻOhi a me ka hoʻopili ʻana: ʻohi ʻia ka pauka maloʻo mai ka lalo o ka mea maloʻo hoʻoheheʻe, kānana ʻia e wehe i nā ʻāpana nui, a laila hoʻopili ʻia no ka mālama ʻana a me ka lawe ʻana.

Nā ʻano nui:

1. ʻO ka nui o ka ʻāpana: Redispersible emulsion pauka maʻamau i loko o nā ʻāpana spherical me nā anawaena mai kahi mau micrometers a hiki i ʻumi micrometers, ma muli o ke kaʻina hana kikoʻī a me ka hana ʻana.
2. Hiki i ka wai: ʻO kekahi o nā hiʻohiʻona koʻikoʻi o RDP ʻo ia ka hiki ke hoʻoheheʻe hou i ka wai e hana i kahi emulsion paʻa i ka wā i hui ʻia me ka wai. Hāʻawi kēia i ka hoʻohui maʻalahi i loko o nā hoʻoheheʻe wai e like me nā morta, nā mea hoʻopili, a me nā uhi.
3. Maʻiʻo Polymer: Loaʻa i ka RDP kahi maʻiʻo kiʻekiʻe o nā paʻa polymer, maʻamau mai ka 50% a i ka 80% ma ke kaumaha, ma muli o ke ʻano polymer kikoʻī a me ka hoʻokumu ʻana.
4. Ka Hoʻohui Kemika: ʻOkoʻa ka haku mele RDP ma muli o ke ʻano o ka polymer i hoʻohana ʻia a me nā mea hoʻohui hou i hoʻohui ʻia i ka wā o ka hana ʻana. ʻO nā polymers maʻamau i hoʻohana ʻia i loko o ka RDP, ʻo ia ka vinyl acetate-ethylene (VAE) copolymers a me ka vinyl acetate-versatile (VAC/VeoVa) copolymers.
5. Nā Pono Hana: Hāʻawi ʻo RDP i kahi ʻano o nā waiwai i makemake ʻia i nā mea hoʻohālikelike, me ka hoʻomaikaʻi ʻana i ka adhesion, ka maʻalahi, ka pale wai, a me ka lōʻihi. Hoʻonui ia i ka hana, ka ikaika mechanical, a me ka hana ʻana o nā mea hana like ʻole e like me nā mortars, tile adhesives, renders, a me nā mea hoʻohui ponoʻī.

I ka hōʻuluʻulu manaʻo, redispersible emulsion pauka (RDP) he versatile pauka o ka wai-based emulsion polymers i hoʻohana ʻia e like me nā mea hoʻohui i nā ʻano hana a me nā noi ʻoihana. ʻO kona hiki ke hoʻoheheʻe hou i loko o ka wai, nā mea polymer kiʻekiʻe, a me nā mea hana i makemake ʻia e lilo ia i mea koʻikoʻi i ka hoʻokumu ʻana i nā mea hale kiʻekiʻe a paʻa.