Redispersible polymer powders (RDP) bụ ngwakọta dị mgbagwoju anya nke polymers na ihe mgbakwunye nke a na-ejikarị eme ihe na ihe owuwu, karịsịa n'imepụta ngwa agha akọrọ-mix. Ihe ntụ ntụ ndị a na-arụ ọrụ dị mkpa n'ịkwalite arụmọrụ na njirimara nke ihe owuwu dị iche iche dị ka adhesives tile, grouts, ogige ndị na-edozi onwe ha na plasta cimenti.
Akụkụ ndị bụ isi:
Ihe ndabere polymer:
Ethylene vinyl acetate (EVA): A na-ejikarị EVA copolymer eme ihe na RDP n'ihi ọmarịcha ihe na-emepụta ihe nkiri, nrapado, na mgbanwe. Enwere ike ịhazi ọdịnaya vinyl acetate dị na copolymer iji gbanwee njirimara nke polymer.
Vinyl Acetate vs. Ethylene Carbonate: Dabere na ihe achọrọ ngwa ngwa, ndị nrụpụta nwere ike iji ethylene carbonate kama vinyl acetate. Ethylene carbonate emewo ka mmiri na-eguzogide mmiri na nrapado na ọnọdụ iru mmiri.
Acrylics: A na-eji polymer acrylic, gụnyere acrylics ma ọ bụ copolymers dị ọcha, maka nguzogide ihu igwe ha pụrụiche, ịdịte aka na ịdị nhịahụ. A maara ha maka inye ezigbo adhesion na ihe dị iche iche.
colloid na-echebe:
Hydroxypropyl methylcellulose (HPMC): HPMC bụ colloid nchebe nke a na-ejikarị na RDP. Ọ na-eme ka redispersibility nke ihe ndị dị na polymer na-eme ka ọ dịkwuo mma ma na-eme ka ihe niile dị na ntụ ntụ.
Polyvinyl mmanya (PVA): PVA bụ colloid ọzọ na-echebe nke na-enyere aka na nkwụsi ike na mgbasa nke mkpụrụ ndụ polymer. Ọ na-ekerekwa òkè n'ịchịkwa viscosity nke ntụ ntụ.
Plasticizer
Dibutyl Phthalate (DBP): DBP bụ ihe atụ nke plasticizer nke a na-agbakwunyekarị na RDP iji meziwanye mgbanwe na nhazi. Ọ na-enyere aka belata okpomọkụ mgbanwe iko nke polymer, na-eme ka ọ dịkwuo mma.
ihe ndochi:
Calcium Carbonate: Enwere ike ịgbakwunye ihe ndị dị ka calcium carbonate iji kwalite nnukwu ntụ ntụ ma nye ụzọ dị ọnụ ahịa iji dozie ihe ndị dị ka udidi, porosity na opacity.
Stabilizers na antioxidants:
Stabilizers: A na-eji ndị a iji gbochie mmebi nke polymer n'oge nchekwa na nhazi.
Antioxidants: Antioxidants na-echebe polymer site na mmebi oxidative, na-eme ka ogologo ndụ RDP dị ogologo.
Ọrụ nke akụrụngwa ọ bụla:
Polymer base: Na-enye ihe ndị na-emepụta ihe nkiri, adhesion, mgbanwe na ike ọrụ na ngwaahịa ikpeazụ.
Colloid na-echebe: kwalite redispersibility, nkwụsi ike na mgbasa nke mkpụrụ ndụ polymer.
Plasticizer: na-akwalite mgbanwe na nhazi.
Fillers: Gbanwee akụrụngwa dị ka udidi, porosity na opacity.
Stabilizers na antioxidants: gbochie mmebi polymer n'oge nchekwa na nhazi.
na ngwụcha:
Redispersible polymer powder (RDP) bụ ihe dị mkpa na ihe dị mkpa n'ime ihe owuwu nke oge a. A na-ahazi ihe mejupụtara kemịkalụ ya, gụnyere polymers dị ka EVA ma ọ bụ resin acrylic, colloid nchebe, plasticizers, fillers, stabilizers na antioxidants, iji mezuo ihe achọrọ nke ngwa ọ bụla. Ngwakọta nke ihe ndị a na-enyere aka melite redispersibility ntụ ntụ, ike nkekọ, mgbanwe na n'ozuzu arụmọrụ na akọrọ mix ngwa agha formulations.
Oge nzipu: Dec-18-2023