Redispersible polymer powders akakosha ekuwedzera mumadhaka ayo anosimudzira kuchinjika, simba rekubatanidza uye kuchengetedza mvura zvimiro zvechigadzirwa chekupedzisira. Nekudaro, kune akawanda akasiyana marudzi eanodhispersible polymer poda pamusika, uye kusarudza iyo inokodzera zvaunoda chaizvo kunogona kuve kwakaoma.
Chekutanga, zvinodikanwa kuti unzwisise basa readhispersible polymer hupfu mumatope. Ichi chigadzirwa icopolymer yevinyl acetate uye ethylene, yakapfapfaidzwa-yakaomeswa kubva kune aqueous polymer emulsion. Iyo poda yakagadzirirwa kuvandudza maitiro ematope, kunyanya maererano nekushanduka, kushanda, kunamatira uye kuchengetedza mvura. Uyezve, inosimudzira zvirinani simende hydration, kuderedza njodzi yekutsemuka, shrinkage uye guruva.
Izvi zvinotevera zvinhu zvakakosha zvekufunga nezvazvo paunosarudza iyo chaiyo inodhindwa yepolymer poda kune yako dhaka application.
Mortar type
Chinhu chekutanga kufunga imhando yedhaka raunoronga kushandisa. Kune marudzi akawanda edhaka, kusanganisira simende-based mortar, lime-based mortar kana gypsum-based mortar, uye epoxy resin mortar. Imwe neimwe ine yayo chaiyo zvimiro uye zvinodiwa, izvo zvinosarudza rudzi rwezve dispersible polymer poda inosarudzwa. Simende madhaka ndiwo anonyanya kuwanda uye anoda mapolymeru anodhindwa zvakare ane kuchengetedzwa kwemvura kwakanaka, kusimba kwebhondi uye kushanda.
Maitiro ekushandisa
Iyo nzira yekushandisa yakakoshawo pakusarudza redispersible polymer poda. Zvimwe zvigadzirwa zvakagadzirirwa kushandiswa mukuoma musanganiswa mafomu, nepo zvimwe zvakakodzerwa nekunyorova musanganiswa application. Mune yakaoma musanganiswa magadzirirwo, iyo polymer hupfu inofanira kukwanisa kupararira nekukurumidza uye zvakaenzana kuita emulsion yakagadzikana nemvura. Mune wet musanganiswa maapplication, iyo polima poda inofanirwa kuve yakanaka redispersibility uye kugona kusanganisa zvinobudirira nezvimwe zvinowedzera uye simende.
Performance zvinodiwa
Izvo zvinodikanwa zvekuita zvedhaka zvinozopesvedzerawo kusarudzwa kwepolymer poda inodhindwa. Zvishandiso zvakasiyana zvine zvakasiyana zvinodiwa zvesimba, kuchinjika uye kusimba. Semuenzaniso, kana iwe uchida kugadzira kunze kwemadziro dhaka, iwe unozoda chigadzirwa chine yakanakisa kudzivirira kwemvura uye kutonhora-kunyorova kugadzikana. Neimwe nzira, kana uri kushandisa tile inonamira, iwe unoda redispersible polymer poda ine yakanaka kunamatira uye kusimba kwakabatana.
Polymer hupfu zvinhu
Chimwe chinhu chakakosha chekufunga kana uchisarudza redispersible polymer poda kuita kwechigadzirwa. Zvinhu zvakakosha zvekutsvaga zvinosanganisira saizi yechidimbu, tembiricha yegirazi (Tg) uye solids yemukati. Iyo particle size yehupfu inokanganisa dispersibility yayo uye kusimba kwekubatana. Madiki madiki saizi (asingasviki 80μm) anopa kuchengetwa kwemvura kuri nani, nepo hukuru hukuru hukuru (hunopfuura 250μm) hunopa kushanda kuri nani.
Iyo tembiricha yegirazi yekuchinja (Tg) yepolymer inodzokororwa poda inotaridza kushanduka kwayo uye kunamatira. A Tg pamusoro petembiricha yemumba (25°C) zvinoreva kuti hupfu hwakaoma, ukuwo Tg iri pasi petembiricha yemukamuri inoreva kuti hupfu hunosanduka. Redispersible polymer powders ine yakaderera Tg (pazasi -15°C) yakanakira mamiriro ekunze anotonhora apo madhaka anogona kusangana nechando-kunyorova kutenderera.
Chekupedzisira, izvo zvakaomeswa zviri mukati meiyo redispersible polymer poda inotaridza chiyero chekushandiswa kwayo uye huwandu hwemvura inodiwa pakusanganiswa. Yakakwirira solids yemukati (inopfuura 95%) inoda hupfu hushoma kuti uwane inodiwa zvivakwa, zvichikonzera kuderera kwemitengo uye kushoma shrinkage.
mukupedzisa
Kusarudza iyo chaiyo inodhindwa yepolymer poda yedhaka application kwakakosha kuti uwane kuita kwaunoda uye kusimba kwechigadzirwa chekupedzisira. Nekutarisa mhando yedhaka, nzira yekuvaka, mashandiro ekuita uye polymer poda hunhu, unogona kusarudza chigadzirwa chinoenderana nezvako chaizvo zvaunoda. Rangarira, kushandisa iyo yakakodzera redispersible polymer poda haingowedzere zvimiro zvedhaka rako, asi zvakare kuderedza njodzi yekutsemuka, shrinkage uye guruva, zvichikonzera kupera kwenguva refu uye kwakanaka.
Nguva yekutumira: Sep-14-2023