Ngwa nkentụ ntụ latex redispersable (RDP) na putty powder formulations etinyewo uche na ụlọ ọrụ ihe owuwu na ihe ụlọ n'ihi mmetụta dị ịrịba ama na njirimara nke ngwaahịa ikpeazụ. Ngwunye latex na-agbanwe agbanwe bụ ntụ ntụ polymer nke nwere ike ịmepụta mgbasa mgbe agwakọta ya na mmiri. Mgbasasa ndị a na-enye njirimara bara uru dị iche iche na putty, gụnyere mma nrapado, mgbanwe, mmiri na-eguzogide, na, n'ụzọ dị mkpa, usoro siri ike.
Ịghọta Putty Powder na ntụ ntụ Latex Redispersible
Putty ntụ ntụ bụ ezigbo ngwaahịa sitere na ntụ ntụ nke a na-eji emeju oghere, ime ka ọ dị nro, na ịkwadebe ihe maka eserese ma ọ bụ imecha ndị ọzọ. Ngwakọta bụ isi nke ntụ ntụ putty na-agụnyekarị ihe ndị na-ekekọta (dịka, simenti, gypsum), ihe ndochi (dịka ọmụmaatụ, talc, calcium carbonate), na mgbakwunye (dịka ọmụmaatụ, retarders, accelerators) na-achịkwa njirimara ọrụ ya. Mgbe agwakọtara ya na mmiri, ntụ ntụ putty na-etolite mado nke na-esiwanye ike ka oge na-aga, na-emepụta elu na-adịgide adịgide, dị nro.
Redispersible latex ntụ ntụ (RDP) bụ mmiri-soluble polima ntụ ntụ mere site ịgbasa-ihicha aqueous dispersions nke polima emulsion. Ndị polymer a na-ejikarị eme ihe na RDP gụnyere styrene-butadiene (SBR), acrylics, na vinyl acetate-ethylene (VAE). Mgbakwunye RDP na ntụ ntụ na-eme ka ihe anụ ahụ na arụ ọrụ nke putty gwọrọ, bụ isi site n'ịkwalite ike nkekọ, mgbanwe, na iguzogide mgbawa.
Ịgbasi ike nke Putty Powder
Ihe siri ike nke ntụ ntụ na-eme ka ihe ndị na-ekekọta ihe (dị ka ciment ma ọ bụ gypsum) na-enweta mmeghachi omume mmiri na mmiri. A na-akpọkarị usoro a hydration (maka ciment) ma ọ bụ crystallization (maka gypsum-based putties), ọ na-eme ka e nwee usoro siri ike nke na-esiwanye ike ka oge na-aga. Otú ọ dị, usoro a nwere ike imetụta ihe dị iche iche, dị ka ọnụnọ nke ihe mgbakwunye, iru mmiri, okpomọkụ, na ihe mejupụtara nke putty n'onwe ya.
Ọrụ RDP na usoro siri ike a bụ ime ka njikọ dị n'etiti ihe ndị ahụ dịkwuo mma, meziwanye mgbanwe, na ịhazi ikpochapụ mmiri. RDP na-arụ ọrụ dị ka ihe nkedo nke, ozugbo a gbasasịrị na mmiri, na-emepụta netwọk polymeric n'ime putty. Netwọk a na-enyere aka ọnyà ụmụ irighiri mmiri ogologo oge, na-ebelata ọnụ ọgụgụ nke evaporation ma si otú a na-agbatị oge ọrụ nke putty. Na mgbakwunye, netwọkụ polymer na-enyere aka etolite igwe siri ike, na-ejikọta ọnụ site na imeziwanye mmekọrịta nke urughuru.
Mmetụta nke ntụ ntụ Latex na-agbanwegharị na usoro ike ike
Ịrụ ọrụ na oge imeghe:
Ntinye nke RDP na usoro putty na-eme ka ọrụ ahụ dịkwuo mma site n'ibelata usoro ihicha, na-enyekwu oge maka ngwa. Nke a bara uru karịsịa na nnukwu ọrụ ebe etinyere putty kwesịrị ịgbasa n'ọtụtụ ebe tupu ya edobe.
Mmụba mgbanwe:
Otu n'ime mmetụta dị ịrịba ama nke ịgbakwunye RDP bụ mmụba na mgbanwe. Ọ bụ ezie na putty ọdịnala na-agbaji agbaji n'elu ike, RDP na-enye aka na ihe a gwọchara na-agbanwe agbanwe, na-ebelata ohere nke ịgbawa n'okpuru nrụgide ma ọ bụ mgbanwe okpomọkụ.
Ike na Ogologo Ogologo:
putties emezigharịrị nke RDP na-egosipụta ike mkpakọ dị elu yana iguzogide iyi na akwa ma e jiri ya tụnyere usoro anaghị agbanwe agbanwe. Nke a bụ n'ihi nguzobe nke matrix polymer nke na-eme ka iguzosi ike n'ezi ihe dị nke putty siri ike sie ike.
Mbelata Mbelata:
Netwọk polymeric mepụtara site na ntụ ntụ latex na-agbanwe agbanwe na-enyekwa aka n'ibelata mbelata n'oge usoro ọgwụgwọ. Nke a dị mkpa karịsịa n'igbochi nhazi nke cracks, nke nwere ike imebi arụmọrụ na mma nke putty.
Nguzogide mmiri:
Uzuzu uzuzu agwakọta ya na uzuzu latex nwere ike ịgbasa na-abụkarị nke na-egbochi mmiri. Ihe ndị dị na latex na-etolite akwa hydrophobic n'ime putty, na-eme ka ngwaahịa a gwọọ ya ghara ịdaba na mmịnye mmiri na, ya mere, ka mma maka ngwa mpụga.
Ịtinye ntụ ntụ latex na-agbanwe agbanwe n'ime usoro putty na-eme ka njirimara ya dịkwuo mma, karịsịa n'oge usoro ike. Uru ndị dị mkpa nke RDP gụnyere ịrụ ọrụ ka mma, mgbanwe mgbanwe, mmụba ike na ịdịte aka, mbelata mbelata, na nguzogide mmiri ka mma. Nkwalite ndị a na-eme ka ntinye nke RDP gbanwee ka ọ dị mma maka ngwa ime na mpụta, na-enye ogologo ndụ ogologo na arụmọrụ n'okpuru ọnọdụ gburugburu ebe obibi dịgasị iche iche.
Maka ndị ọkachamara na-ewu ụlọ na ndị na-emepụta ihe, ojiji nkentụ ntụ latex redisperable na-enye ụzọ dị mfe ma dị irè iji kwalite njirimara nke ntụ ntụ putty omenala, na-eme ka ngwaahịa dị mfe itinye, na-adịgide adịgide, na-adịkwaghị mfe ịgbawa ma ọ bụ na-ebelata oge. Site n'ịkwalite usoro ahụ na RDP, ntụ ntụ putty na-aghọwanye ihe, na-enwewanye arụmọrụ n'ozuzu ya n'ihe gbasara adhesion, hardness, na iguzogide ihe ndị ahụ.
Oge nzipu: Mar-20-2025