ʻO ka pauka polimer hiki ke hoʻopaʻa hou ʻia (RDP)he mea pauda i hana ʻia e ka hoʻomaloʻo ʻana i ka emulsion polymer, ka mea maʻamau i hoʻohana ʻia i nā mea e like me ke kūkulu ʻana, nā uhi, nā mea hoʻopili, a me nā mea hoʻopili tile. ʻO kāna hana nui ʻo ka hoʻoheheʻe hou ʻana i loko o ka emulsion ma o ka hoʻohui ʻana i ka wai, e hāʻawi ana i ka adhesion maikaʻi, ka elasticity, ka pale ʻana i ka wai, ka pale ʻana, a me ka pale ʻana i ka wā.
Hiki ke nānā ʻia ke ʻano o ka Redispersible Polymer Powder (RDP) mai nā ʻano he nui, ʻo ia hoʻi me nā ʻāpana aʻe:
1. Polymer resin
ʻO ka mea nui o ka Redispersible Polymer Powder he polymer resin, ka mea maʻamau he polymer i loaʻa e ka emulsion polymerization. ʻO nā resin polymer maʻamau ka:
ʻO ka waiʻona polyvinyl (PVA): loaʻa nā waiwai adhesion maikaʻi a me nā mea hana kiʻiʻoniʻoni a hoʻohana nui ʻia i nā mea kūkulu hale.
Polyacrylates (e like me polyacrylates, polyurethanes, etc.): loaʻa i ka elasticity maikaʻi loa, ka ikaika paʻa, a me ka pale wai.
Polystyrene (PS) a i ʻole ethylene-vinyl acetate copolymer (EVA): hoʻohana maʻamau no ka hoʻomaikaʻi ʻana i nā waiwai hana kiʻiʻoniʻoni, hoʻonui i ka pale wai, a me ka pale ʻana i ka wā.
Polymethyl methacrylate (PMMA): He maikaʻi kēia polymer i ka anti-aging a me ka ʻike.
ʻO kēia mau polymer resins e hana i nā emulsions ma o ka polymerization reactions, a laila hoʻoneʻe ʻia ka wai i loko o ka emulsion ma ka hoʻomaloʻo ʻana a i ʻole ka maloʻo maloʻo, a ma hope loa e loaʻa kahi Redispersible Polymer Powder (RDP) i loko o ka pauka.
2. Nā mea hoʻoheheʻe
I mea e mālama ai i ka paʻa ma waena o nā ʻāpana polymer a pale i ka agglomeration i ka pauka, e hoʻohui ʻia ka nui o nā surfactants i ka wā o ka hana hana. ʻO ke kuleana o nā surfactants e hoʻemi i ka ʻili o ka ʻili ma waena o nā ʻāpana a kōkua i ka hoʻopuehu ʻana i ka wai. Loaʻa nā surfactants maʻamau:
ʻO nā surfactants non-ionic (e like me nā polyethers, polyethylene glycols, etc.).
Nā mea hoʻoheheʻe anionic (e like me nā paʻakai ʻakika momona, alkyl sulfonates, etc.).
Hiki i kēia mau surfactants ke hoʻonui i ka dispersibility o Redispersible Polymer Powder (RDP) s, e ʻae i ka pauka latex e hana hou i kahi emulsion ma hope o ka hoʻohui ʻana i ka wai.
3. Hoʻopiha a me nā mānoanoa
I mea e hoʻoponopono ai i ka hana o nā pauka latex a hōʻemi i nā kumukūʻai, hiki ke hoʻohui ʻia kekahi mau mea hoʻopihapiha a me nā mānoanoa i ka wā o ka hana ʻana. Nui nā ʻano mea hoʻopihapiha, a ʻo nā mea maʻamau ka:
Calcium carbonate: he mea hoʻopihapiha hoʻopihapiha maʻamau i hiki ke hoʻonui i ka pili a hoʻomaikaʻi i ke kumukūʻai.
ʻO Talc: hiki ke hoʻonui i ka wai a me ka pale ʻana o ka mea.
ʻO nā mineral silicate: e like me ka bentonite, ka graphite i hoʻonui ʻia, a me nā mea ʻē aʻe, hiki ke hoʻonui i ka pale ʻana a me ka pale wai o ka mea.
Hoʻohana pinepine ʻia nā mea mānoanoa e hoʻoponopono i ka viscosity o ka huahana e hoʻololi iā ia i nā kūlana kūkulu ʻokoʻa. ʻO nā mānoanoa maʻamau ka hydroxypropyl methylcellulose (HPMC) a me ka polyvinyl alcohol (PVA).
4. Anti-caking agent
I nā huahana pauka, i mea e pale ai i ka agglomeration i ka wā o ka mālama ʻana a me ka lawe ʻana, hiki ke hoʻohui ʻia nā mea anti-caking i ka wā o ke kaʻina hana. ʻO nā mea anti-caking ka nui o kekahi mau mea anorganic maikaʻi, e like me ke alumini silicate, silicon dioxide, a me nā mea ʻē aʻe. Hiki i kēia mau mea ke hana i kahi kiʻiʻoniʻoni pale ma ka ʻili o nā ʻāpana pauka latex e pale ai i nā ʻāpana mai ka hui pū ʻana.
5. Nā mea hoʻohui ʻē aʻe
Loaʻa paha i ka Redispersible Polymer Powder (RDP) kekahi mau mea hoʻohui kūikawā e hoʻomaikaʻi i nā waiwai kikoʻī:
ʻO ka mea kūʻē UV: hoʻomaikaʻi i ka pale ʻana i ka wā a me ka hiki ke kū i ka wā kahiko o ka mea.
Antibacterial agent: hōʻemi i ka ulu ʻana o nā microorganisms, ʻoi loa ke hoʻohana ʻia i kahi wahi haʻahaʻa.
Plasticizer: hoʻomaikaʻi i ka maʻalahi a me ka pale ʻana o ka pauka latex.
Antifreeze: Kāohi i nā mea mai ka hau hau ma nā wahi wela haʻahaʻa, e pili ana i ke kūkulu ʻana a me ka hoʻohana ʻana i nā hopena.
6. Ka wai
ʻOiai ʻo Redispersible Polymer Powder (RDP) i loko o ke ʻano o ka pauka maloʻo, pono nō hoʻi ia i kahi nui o ka mālama ʻana i ka wai i ka wā o ke kaʻina hana, a ʻo ka mea maʻamau ka mālama ʻia ma lalo o 1%. ʻO ka ʻoluʻolu kūpono e kōkua i ka mālama ʻana i ka wai a me ka paʻa lōʻihi o ka pauka.
Ka hana a me ka hana o Redispersible Polymer Powder (RDP)
ʻO ke kuleana nui o Redispersible Polymer Powder (RDP) ʻo ia ka mea hiki ke hoʻokaʻawale ʻia e hana i kahi emulsion ma hope o ka hoʻohui ʻana i ka wai, a loaʻa iā ia nā hiʻohiʻona hana nui:
Hoʻopili maikaʻi: Hoʻonui i ka hiki ke hoʻopaʻa ʻia o nā uhi a me nā adhesives, a hoʻomaikaʻi i ka ikaika hoʻopaʻa ma waena o nā mea kūkulu hale.
Elasticity a me ka maʻalahi: E hoʻomaikaʻi i ka elasticity o ka uhi, hoʻomaikaʻi i kona kūʻē ʻana a me ka pale ʻana i ka hopena.
Kūleʻa wai: Hoʻonui i ka pale wai o ka mea, kūpono no ka hoʻohana ʻana i nā wahi waho a i ʻole ka humid.
Ke kū'ē i ka wā: E ho'omaika'i i ke kū'ē UV o ka mea, anti-aging a me nā waiwai'ē a'e, a ho'onui i kona ola lawelawe.
Ke kū'ē i ka māwae: He kū'ē kū'ē maikaʻi kona a kūpono i nā pono anti-cracking i nā papahana kūkulu.
RDPhana ʻia ma ka hoʻololi ʻana i ka polymer emulsion i pauka ma o ke kaʻina hana maʻalahi. He nui nā waiwai maikaʻi a hoʻohana nui ʻia i ke kūkulu ʻana, nā uhi, nā mea hoʻopili a me nā māla ʻē aʻe. ʻO ke koho a me ka hapa o kāna mau mea e pili pono i kāna hana hope.
Ka manawa hoʻouna: Mar-11-2025