Redispersible polymer powder (RDP) bụ copolymer nke vinyl acetate na ethylene emepụtara site na usoro ihicha ịgba. Ọ bụ isi ihe na-arụ ọrụ dị iche iche na-ewu ihe, na-enye mma mmachi, mgbanwe na ịdịte aka na ngwaahịa ndị dabeere na ciment. Nrụpụta nke powders polymer redispersible gụnyere ọtụtụ usoro.
1. Nhọrọ akụrụngwa:
Vinyl acetate-ethylene copolymer: Isi akụrụngwa nke RDP bụ copolymer nke vinyl acetate na ethylene. A họọrọ copolymer a maka ezigbo nrapado ya na ikike ime mgbanwe na ike nke ihe cimenti.
2. Emulsion polymerization:
Usoro mmepụta na-amalite site na emulsion polymerization, bụ nke vinyl acetate na ethylene monomers na-emepụta polymerized n'ihu ndị na-amalite na ndị na-eme ihe ike.
A na-ejikwa nlezianya na-achịkwa usoro emulsion polymerization iji nweta ịdị arọ molekụla achọrọ, ihe mejupụtara, na nhazi copolymer.
3. Mmeghachi omume na copolymerization:
Vinyl acetate na ethylene monomers na-emeghachi omume n'ihu ihe na-eme ka ọ bụrụ copolymer.
Usoro copolymerization dị oké mkpa iji nweta polymers nwere ihe ndị a chọrọ, gụnyere ezigbo mmepụta ihe nkiri na redispersibility.
4. ịgbasa nkụ:
Mgbe ahụ, a na-edobe emulsion ahụ n'usoro ikpocha mmiri. Nke a na-agụnye spraying emulsion n'ime a na-ekpo ọkụ ụlọ, ebe mmiri evaporates, na-ahapụ n'azụ siri ike irighiri nke redispersible polymer.
A na-ejikwa nlezianya na-achịkwa ọnọdụ ihicha nke ịgbasa, dị ka okpomọkụ na ikuku ikuku, iji hụ na e guzobe ezigbo ntụ ntụ n'efu.
5. Ọgwụgwọ elu:
A na-ejikarị ọgwụgwọ elu mee ihe iji melite nkwụsi ike nchekwa na redispersibility nke polymer powders.
A na-ejikarị ihe mgbakwunye hydrophobic ma ọ bụ colloid nchebe eme ihe na ọgwụgwọ elu iji gbochie urughuru agglomeration ma kwalite mgbasa ozi ntụ ntụ na mmiri.
6. njikwa mma:
A na-emejuputa usoro njikwa mma siri ike n'oge usoro nrụpụta. A na-enyocha oke dị ka nkesa nha nha, nnukwu njupụta, ọdịnaya monomer fọdụrụnụ na ọnọdụ mgbanwe iko iji hụ na ngwaahịa na-agbanwe agbanwe.
7. Nkwakọ ngwaahịa:
A na-akwakọba ntụ ntụ polymer ikpeazụ na-emegharị emegharị n'ime arịa na-egbochi mmiri iji gbochie mmịpụta mmiri, nke nwere ike imetụta arụmọrụ ya na-adịghị mma.
Ngwa nke ntụ ntụ polymer a na-emegharị emegharị:
A na-eji RDP n'ọtụtụ dị iche iche nke ngwa ihe owuwu gụnyere tile adhesives, ogige ndị na-edozi onwe ha, sistemu mkpuchi mkpuchi mpụga (EIFS) na ụrọ ciment.
Ntụ ntụ na-eme ka ihe ndị dị ka mmiri na-eguzogide mmiri, mgbanwe na adhesion, na-enyere aka imeziwanye arụmọrụ na ịdịte aka nke ihe ndị a na-ewu ụlọ.
na ngwụcha:
Redispersible polymer ntụ ntụ bụ ihe dị iche iche nwere ngwa dị mkpa na ụlọ ọrụ mmepụta ihe. Mmepụta ya na-agụnye ịkpachara anya nhọrọ nke akụrụngwa, emulsion polymerization, spraying ihicha, n'elu ọgwụgwọ na nlezianya mma njikwa usoro.
Nrụpụta nke powders polymer redispersible bụ usoro mgbagwoju anya nke na-achọ nkenke na nlebara anya na nkọwa iji nweta ngwaahịa dị elu nke nwere ihe ndị a chọrọ maka ngwa ihe owuwu.
Oge nzipu: Dec-18-2023