ʻO Redispersible Polymer Powder (RDP) kahi ʻano o ka pauka copolymer i hoʻohana nui ʻia i nā ʻano hana kūkulu. Hana ʻia nā RDP e kahi kaʻina i kapa ʻia ʻo spray drying. I loko o kēia kaʻina hana, emulsified ka hui ʻana o nā monomer hiki ke hoʻoheheʻe ʻia i ka wai a me nā mea hoʻohui ʻē aʻe, a laila wehe ʻia ka wai ma o ka hoʻomaloʻo ʻana. ʻO ka huahana i loaʻa he pauka i hiki ke maʻalahi hou i ka wai. Loaʻa i nā RDPs ka hoʻopili maikaʻi ʻana, ka maʻalahi, a me ke kūpaʻa wai, kahi e kūpono ai no ka hoʻohana ʻana i nā noi he nui.

Hoʻokumu ʻia ka hoʻokaʻawale ʻana o nā RDP ma luna o nā kumu he nui, e komo pū me ka haku mele, ke kaʻina polymerization, a me nā waiwai hope o ka huahana. Ma kēia ʻatikala, e kūkākūkā mākou i ka hoʻokaʻawale ʻana o nā RDP e pili ana i kā lākou ʻano kemika.

1. Vinyl Acetate Ethylene (VAE) RDPs

ʻO nā VAE RDP ka mea i hoʻohana nui ʻia o nā RDP. Hana ʻia lākou e ka copolymerizing vinyl acetate (VA) a me ka ethylene (E) i mua o nā monomers ʻē aʻe e like me ka acrylate a me ka methacrylate. ʻO ka ʻike VA i loko o ka copolymer ʻokoʻa ma waena o 30% a me 80%, ma muli o ka noi i manaʻo ʻia. ʻIke ʻia nā VAE RDPs no kā lākou mau mea hoʻopili maikaʻi loa, hiki ke maʻalahi, a me ka pale wai. Hoʻohana pinepine ʻia lākou i nā mea hoʻopili tile, nā lole skim, a me nā putties pā.

2. Nā RDP Acrylic

Hana ʻia nā RDP Acrylic e ka copolymerizing acrylic esters me nā monomers ʻē aʻe e like me vinyl acetate, ethylene, a i ʻole styrene. ʻO nā esters acrylic i hoʻohana ʻia i loko o ka copolymer he methyl methacrylate (MMA), butyl acrylate (BA), a i ʻole he hui pū ʻana o nā mea ʻelua. Aia nā waiwai o nā RDP acrylic i ka ratio o nā monomers i hoʻohana ʻia i ke kaʻina hana copolymerization. Loaʻa i nā RDP Acrylic ke kūpaʻa maikaʻi loa i ka wā, a hoʻohana mau ʻia lākou i nā uhi o waho, nā membrane wai ʻole, a me nā uhi sima.

3. ʻO Styrene Butadiene (SB) RDPs

Hana ʻia nā SB RDP e ka copolymerizing styrene a me ka butadiene i mua o nā monomers ʻē aʻe e like me ka acrylate a i ʻole ka methacrylate. ʻO ka ʻikepili styrene i loko o ka copolymer he ʻokoʻa ma waena o 20% a me 50%, ma muli o ka noi i manaʻo ʻia. Loaʻa i nā SB RDP nā mea hoʻopili maikaʻi loa, a hoʻohana mau ʻia lākou i nā tile adhesives, mortar, a me nā grouts.

4. ʻO Vinyl Acetate (VA) RDPs

Hana ʻia nā VA RDP e ka homopolymerizing vinyl acetate monomers. Loaʻa iā lākou kahi maʻi vinyl acetate kiʻekiʻe, mai 90% a 100%. Loaʻa i nā VA RDP nā waiwai hoʻopili maikaʻi, a ua hoʻohana mau ʻia lākou i nā mea hoʻopili tile, nā mea hoʻopaʻa paʻa, a me nā mea hoʻoheheʻe cementitious.

5. Nā RDP Ethylene Vinyl Chloride (EVC).

Hana ʻia nā EVC RDP e ka copolymerizing ethylene a me vinyl chloride i mua o nā monomers ʻē aʻe e like me ka acrylate a me ka methacrylate. ʻO ka ʻike vinyl chloride i loko o ka copolymer he ʻokoʻa ma waena o 5% a me 30%, ma muli o ka noi i manaʻo ʻia. Loaʻa i nā EVC RDPs ka pale wai maikaʻi a me ka hoʻopili maikaʻi ʻana i nā substrate like ʻole. Hoʻohana pinepine ʻia lākou i nā mea hoʻopili tile, nā lole skim, a me nā putties pā.

I ka hopena, ʻo RDP kahi ʻano koʻikoʻi o ka pauka copolymer i hoʻohana nui ʻia i nā noi hana like ʻole. Hoʻokumu ʻia ka hoʻokaʻawale ʻana o nā RDP ma luna o nā kumu he nui, ʻo ia hoʻi ka haku mele, ke kaʻina polymerization, a me nā waiwai hope o ka huahana. Hiki ke hoʻokaʻawale ʻia ka hui kemika o nā RDP i Vinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, a me Ethylene Vinyl Chloride (EVC) RDPs. Loaʻa i kēlā me kēia ʻano RDP kona mau waiwai kūʻokoʻa e kūpono ai no nā noi kikoʻī.