Redispersible Latex Powder (RDP) bụ ihe dị mkpa na-ewu ụlọ ma na-ejikarị eme ihe na-ewu ụlọ, ihe mgbidi, ihe ala na ubi ndị ọzọ. Ntugharị ya dị oke mma, adhesion na mgbanwe na-enye ya uru dị ukwuu n'oge usoro ihe owuwu.
1. Nkwadebe nke emulsion
Nzọụkwụ mbụ n'ime ka redisspersible latex ntụ ntụ bụ nkwadebe nke emulsion. A na-emekarị nke a site na emulsion polymerization. Emulsion polymerization bụ usoro mmiri mmiri na-emepụta site na-agbasasị monomers, emulsifiers, initiators na ngwaọrụ ndị ọzọ na mmiri. N'oge usoro polymerization, monomers polymerize n'okpuru ọrụ nke ndị mmalite na-emepụta ụdọ polymer, si otú ahụ na-emepụta emulsion kwụsiri ike.
Ndị monomers a na-ejikarị eme ihe maka emulsion polymerization gụnyere ethylene, acrylates, styrene, wdg Dabere na ihe ndị achọrọ, enwere ike ịhọrọ monomers dị iche iche maka copolymerization. Dịka ọmụmaatụ, ethylene-vinyl acetate copolymer (EVA) emulsion bụ nke a na-eji eme ihe n'ọtụtụ ebe na nkwadebe nke uzuzu latex redispersible n'ihi na mmiri na-eguzogide ya na adhesion.
2. fesa ihicha
Mgbe edozichara emulsion ahụ, ọ dị mkpa ka a gbanwee ya ka ọ bụrụ ntụ ntụ latex na-agbanwe agbanwe. A na-enwetakarị usoro a site na teknụzụ ihicha ịgba. Ịkpọsa ahịhịa bụ ụzọ ihicha nke na-agbanwe ngwa ngwa ihe mmiri mmiri ka ọ bụrụ ntụ ntụ.
N'oge usoro ihicha ịgba, emulsion na-atomized n'ime ezigbo ụmụ irighiri mmiri site na nozulu ma kpọtụrụ ya na ikuku ọkụ dị elu. Mmiri dị n'ime ụmụ irighiri mmiri ndị ahụ na-ekupụ ngwa ngwa, ihe ndị ahụ siri ike na-agbakọta n'ime ntakịrị ntụ ntụ. Isi ihe na-eme ka ihicha ihicha bụ ịchịkwa okpomọkụ na oge ihicha iji hụ na nha nha nha nke ntụ ntụ latex na ihicha zuru oke, ebe ị na-ezere mmebi okpomọkụ nke oke okpomọkụ kpatara.
3. ọgwụgwọ elu
Iji meziwanye arụmọrụ na nkwụsi ike nke uzuzu latex redispersible, a na-agwọkarị elu ya. Ebumnuche bụ isi nke ọgwụgwọ n'elu bụ iji mee ka mmiri dị n'ime ntụ ntụ dịkwuo mma, melite nkwụsi ike nchekwa ya ma kwalite redispersibility na mmiri.
Usoro ọgwụgwọ elu nke a na-ahụkarị gụnyere mgbakwunye nke ọgwụ mgbochi, ihe mkpuchi na ihe ndị na-emepụta ihe. Ndị na-eme ihe na-eme ka ihe na-eme ka ọ ghara ịdị na-eme ka ntụ ntụ na-eme ka ọ ghara ịdị n'oge nchekwa ma nọgide na-enwe mmetụta dị mma; ndị ọrụ mkpuchi na-ejikarị ụfọdụ polymers soluble mmiri na-ekpuchi ntụ ntụ latex iji gbochie ntinye mmiri; mgbakwunye nke surfactants nwere ike imeziwanye redispersibility nke ntụ ntụ latex ka o wee nwee ike ịgbasa ngwa ngwa na nke ọma mgbe ị gbakwunyere mmiri.
4. Nkwakọ ngwaahịa na nchekwa
Nzọụkwụ ikpeazụ n'ime usoro mmepụta nke uzuzu latex redispersible bụ nkwakọ na nchekwa. Iji hụ na ịdị mma na arụmọrụ nke ngwaahịa ahụ, a ghaghị ịkwụ ụgwọ nlebara anya iji gbochie mmiri, mmetọ na uzuzu ka ọ na-efe efe n'oge usoro nkwakọ ngwaahịa. A na-etinyekarị ntụ ntụ latex na-agbanwe agbanwe n'ime akpa akwụkwọ dị iche iche ma ọ bụ akpa rọba nwere ezigbo mmiri na-eguzogide mmiri, a na-etinyekwa onye na-ehicha ihe n'ime akpa ahụ iji gbochie mmiri.
Mgbe ị na-echekwa, a ga-etinye ntụ ntụ latex na-emegharị emegharị na ebe akọrọ, ikuku ventilashị, pụọ na ìhè anyanwụ kpọmkwem na gburugburu okpomọkụ dị elu, iji gbochie ntụ ntụ ma ọ bụ mmebi arụmọrụ.
Usoro mmepụta nke redispersible latex ntụ ntụ na-agụnye ọtụtụ usoro dị ka nkwadebe emulsion, ihicha mmiri, ọgwụgwọ elu, nkwakọ na nchekwa. Site n'ịchịkwa kpọmkwem usoro usoro nke njikọ nke ọ bụla, a pụrụ imepụta ntụ ntụ latex na-arụ ọrụ nke ọma na ịdị mma kwụsiri ike iji gboo mkpa dị iche iche nke ụlọ ọrụ ihe owuwu ụlọ. Site na ọganihu na-aga n'ihu nke nkà na ụzụ, usoro nkwadebe nke redispersible latex ntụ ntụ ga-abụ ndị enyi na gburugburu ebe obibi na-arụ ọrụ nke ọma n'ọdịnihu, na arụmọrụ nke ngwaahịa ga-akawanye mma.
Oge nzipu: Ọgọst-27-2024