Redispersible polymer poda ndechimwe chezvinhu zvinowanzoshandiswa mukuvaka uye mamwe maindasitiri. Kusarudzika kwayo, kushanda nesimba uye hupfumi hunoita kuti ive sarudzo yakakurumbira kune akawanda maapplication. Nekudaro, nezvakawanda sarudzo dzekusarudza kubva, zvinogona kunetsa kune vashandisi kuona uye kusarudza chigadzirwa chakakodzera kune zvavanoda. Muchikamu chino, tinokurukura zvinhu zvakakosha zvekufunga nezvazvo usati wasarudza redispersible polymer poda.
1. Kunzwisisa Redispersible Polymer Powders
Redispersible polymer poda ihupfu hwakaoma hunowanikwa nekupfapfaidza akasiyana emulsion yepolymer mune inoputika organic zvinonyungudutsa uye nekuomesa pasi pemamiriro chaiwo. Redispersible polymer poda inonyanya kuumbwa nepolymer base zvinhu, reactive binder, plasticizer uye inorganic filler. Inonyanya kushandiswa sebhainda, firimu rekare uye gobvu mumashandisirwo akasiyana-siyana semendi uye gypsum based materials, masystem ekudzivirira mvura uye madhaka.
2. Kuumbwa kwe redispersible polymer powder
Nechisimbiso, kuumbwa kwepolymer inodzokororwa hupfu chinhu chakakosha chinokanganisa zvimiro zvehupfu uye kukodzera kwayo kune yakarongwa kushandiswa. Naizvozvo, kuumbwa kwemakemikari epolymer kunofanirwa kutariswa usati wasarudza chigadzirwa. Mazhinji mapolymers anodhindwa anobva pa ethylene vinyl acetate (EVA) uye vinyl acetate ethylene (VAE), iyo ine zvimiro uye mabhenefiti akasiyana.
EVA redispersible polymers anochinjika zvakanyanya, anosimudzira elasticity yechigadzirwa chekupedzisira, uye inopa yakanakisa kunamatira uye kuramba kwemamiriro ekunze. Kune rimwe divi, VAE redispersible polymers ane simba repamusoro uye nani kudzivirira mvura kupfuura EVA polima, zvichiita kuti ive yakakodzera kushandiswa kwekunze. Acrylic polymers ane dhigirii repamusoro rekunamatira uye kuenderana nezvimwe zvekuvaka.
3. Zvimiro zvemuviri zve redispersible polymer poda
Hunhu hwemuviri hwehupfu hwepolymer hunogona kunzwisiswa zvakanaka usati waita sarudzo dzinodiwa. Zvimiro izvi zvinosanganisira particle size distribution, gloss, color uye bulk density yehupfu. Aya maitiro anokanganisa kuita, processability uye kutaridzika kwechigadzirwa chekupedzisira.
Iyo particle size kugoverwa kwe redispersible polymer poda yakakosha sezvo ichitarisa mwero wayo wekupararira mu substrate. Kungwarira kudzora saizi yechikamu panguva yekugadzira kwakakosha kuve nechokwadi cheunifomu poda yemuviri zvivakwa. Kuwanda kwehupfu hunokanganisa kuchengetedza kwayo, kutakura uye kubata.
4. Michina yekushandisa
Maitiro ekusarudza ezve dispersible polymer poda anofanirwa kufunga nezve yakanangana nekushandisa tekinoroji. Imwe neimwe inodispersible polymer poda mhando ine akasiyana zvivakwa zvinoita kuti mamwe mapoda akwane kune chaiwo maitiro ekushandisa pane mamwe. Semuyenzaniso, yakaderera-viscosity poda inokodzera zvirinani kupfapfaidza zvikumbiro, nepo high-viscosity poda ingada kupuruzira ruoko.
5. Kuenderana kwe redispersible polymer poda nezvimwe zvinhu
Kugarisana chinhu chakakosha kutariswa pakusarudza yakakodzera redispersible polymer poda. Usati wasarudza imwe poda, zvakakosha kuti uongorore kuwirirana kwayo nezvimwe zvinhu zvinoshandiswa mukugadzirwa kwekupedzisira, somuenzaniso, poda yakasarudzwa inofanira kusunganidzwa pasina musono nesamende nezvimwe zvinosunga.
6. Zvido zvekuita
Izvo zvinodikanwa zvimiro zvechigadzirwa chekupedzisira zvinosarudza kusarudzwa kweiyo yakakodzera redispersible polymer poda. Izvo zvinodikanwa kutsanangura iyo yemuviri uye kemikari zvimiro zveadhispersible polymer hupfu, zvinosanganisira interfacial tension, pH, tembiricha yegirazi, uye modulus yekunyungudika.
Kuziva uye kusarudza akakodzera redispersible polymer hupfu inzira yakakosha iyo inofanirwa kufunga nezvekuumbwa kwemakemikari ehupfu, zvimiro zvemuviri, maitiro ekushandisa, kuenderana uye kuita zvinodiwa. Zvinhu zvinofanirwa kutariswa zvinosanganisira particle size distribution, bulk density uye gloss. Chekupedzisira, zvakakosha kuti uone zvivakwa zvakakodzera kune yakatarisirwa kunyorera, senge elasticity, kuramba mamiriro ekunze, uye kuenderana nezvimwe zvekuvaka. Nekurangarira zvinhu izvi, vashandisi vanogona kusarudza redispersible polymer poda inosangana nezvavanoda, inopa kuita kwakaringana, uye inotsigira zvinangwa zvavo zvese.
Nguva yekutumira: Aug-25-2023