Nkewa nke Polymer Powder Redispersible (RDP)

Redispersible Polymer Powder (RDP) bụ ụdị ntụ ntụ copolymer nke a na-eji n'ọtụtụ ebe na ngwa owuwu dị iche iche. A na-eme RDP site na usoro a na-akpọ ihicha mmiri. N'oge usoro a, a na-eme ka ngwakọta nke monomers soluble mmiri na ihe mgbakwunye ndị ọzọ, wee wepụ mmiri ahụ site na ihicha mmiri. Ihe na-esi na ya pụta bụ ntụ ntụ nke nwere ike ịgbasa ngwa ngwa na mmiri. RDPs nwere ezigbo adhesion, mgbanwe, na nguzogide mmiri, nke na-eme ka ha dị mma maka iji mee ihe n'ọtụtụ ngwa.

Nhazi nke RDP dabere n'ọtụtụ ihe, gụnyere ihe mejupụtara kemịkalụ, usoro polymerization, na njirimara ikpeazụ nke ngwaahịa ahụ. N'isiokwu a, anyị ga-atụle nhazi nke RDPs dabere na ihe mejupụtara kemịkalụ ha.

Vinyl Acetate Ethylene (VAE) RDPs

VAE RDP bụ ụdị RDP kachasị eji eme ihe. Emere ha site na copolymerizing vinyl acetate (VA) na ethylene (E) n'ihu monomers ndị ọzọ dị ka acrylate ma ọ bụ methacrylate. Ọdịnaya VA dị na copolymer dịgasị n'etiti 30% na 80% dabere na ngwa a chọrọ. A maara VAE RDPs maka njirimara nrapado ha dị mma, mgbanwe, na nguzogide mmiri. A na-ejikarị ha eme ihe na nrapado tile, uwe mwụda, na akwa mgbidi.

Acrylic RDPs

A na-eme RDP acrylic site na copolymerizing acrylic esters na monomers ndị ọzọ dị ka vinyl acetate, ethylene, ma ọ bụ styrene. Acrylic esters eji na copolymer nwere ike ịbụ methyl methacrylate (MMA), butyl acrylate (BA), ma ọ bụ ngwakọta nke ha abụọ. Njirimara nke acrylic RDPs dabere na nha nke monomers ejiri na usoro copolymerization. Acrylic RDPs nwere ezigbo nguzogide ihu igwe, a na-ejikarị ya eme ihe na mkpuchi mpụta, mkpuchi mmiri, na mkpuchi cimenti.

Styrene Butadiene (SB) RDPs

A na-eme SB RDP site na copolymerizing styrene na butadiene n'ihu monomers ndị ọzọ dị ka acrylate ma ọ bụ methacrylate. Ọdịnaya styrene dị na copolymer dịgasị n'etiti 20% na 50% dabere na ngwa ezubere. SB RDP nwere ezigbo nrapado nke ọma, a na-ejikarị ha eme ihe na nrapado tile, ngwa agha, na grouts.

Vinyl acetate (VA) RDPs

A na-eme VA RDPs site na homopolymerizing vinyl acetate monomers. Ha nwere nnukwu vinyl acetate ọdịnaya, sitere na 90% ruo 100%. Ndị VA RDP nwere ezigbo nrapado, a na-ejikarị ha eme ihe na nrapado tile, ihe ndị na-ejikọta ọnụ, na mkpuchi cimenti.

Ethylene Vinyl Chloride (EVC) RDPs

A na-eme EVC RDP site na copolymerizing ethylene na vinyl chloride n'ihu monomers ndị ọzọ dị ka acrylate ma ọ bụ methacrylate. Ọdịnaya vinyl chloride dị na copolymer dịgasị n'etiti 5% na 30% dabere na ngwa a chọrọ. EVC RDPs nwere ezigbo mmiri na-eguzogide mmiri na ezigbo nrapado dị iche iche. A na-ejikarị ha eme ihe na nrapado tile, uwe mwụda, na akwa mgbidi.

N'ikpeazụ, RDP bụ ụdị dị mkpa nke copolymer ntụ ntụ nke a na-ejikarị eme ihe n'ọtụtụ ihe owuwu dị iche iche. Nhazi nke RDP dabere n'ọtụtụ ihe, gụnyere ihe mejupụtara kemịkalụ, usoro polymerization, na njirimara ikpeazụ nke ngwaahịa ahụ. Ngwakọta kemịkalụ nke RDP nwere ike kewaa n'ime Vinyl Acetate Ethylene (VAE) RDPs, Acrylic RDPs, Styrene Butadiene (SB) RDPs, Vinyl Acetate (VA) RDPs, na Ethylene Vinyl Chloride (EVC) RDPs. Ụdị RDP ọ bụla nwere ihe pụrụ iche nke na-eme ka ọ dị mma maka ngwa ngwa.

Ọ dị mkpa ịhọrọ ụdị RDP ziri ezi maka otu ngwa iji nweta nsonaazụ kacha mma. Ihe ndị dị mkpa ka a tụlee mgbe ị na-ahọrọ RDP kwesịrị ekwesị gụnyere ụdị mkpụrụ osisi, ike nrapado chọrọ, mmiri na-eguzogide mmiri, mgbanwe mgbanwe, na ihu igwe.

Ọzọkwa, enwere ike ijikọ RDP na ihe ndị ọzọ dị ka ciment, ájá, na ihe mgbakwunye ndị ọzọ iji mepụta ngwaahịa dị elu dị ka adhesives tile, grouts, skim uwe, na mkpuchi mpụga. Enwere ike imeziwanye ihe nke ngwaahịa ikpeazụ site n'ịgbanwe ọnụọgụ RDP ejiri na usoro nhazi ndị ọzọ.

Na nchịkọta, RDP bụ ụdị ntụ ntụ copolymer dị iche iche nke na-enye ike nrapado dị mma, nkwụsị mmiri, na mgbanwe. A na-eji ha eme ihe n'ọtụtụ ebe n'ọrụ ihe owuwu dị iche iche, gụnyere nrapado taịlị, mkpuchi skim, na mkpuchi mpụta. Nhazi nke RDP dabere na ihe mejupụtara kemịkalụ ha, nke gụnyere VAE RDPs, acrylic RDPs, SB RDPs, VA RDPs, na EVC RDPs. Ọ dị oke mkpa ịhọrọ RDP kwesịrị ekwesị maka otu ngwa iji nweta nsonaazụ kacha mma.

Oge nzipu: Eprel-15-2023