Lero tikambirana za momwe tingawonjezere mitundu yachindunji ya oba.
Mitundu ya ophatikizidwa nthawi zambiri amakhala ngati atorganic, cellulose, ma acrylic, ndi polyirethane.
Wononga
Zipangizo zamafuta makamaka bentonite, wokazinga, ndi zina zambiri, zomwe zimawonjezeredwa kwa malo opera pakukupera, chifukwa ndizovuta kuwubalalitsa kwathunthu chifukwa cha penti yachilendo.
Palinso gawo laling'ono lomwe lidzaphulika ndi kuphatikizidwa ndi gel osakaniza kuti mugwiritse ntchito.
Zitha kuwonjezeredwa kwa zojambula popera kuti muchepetse gawo lina la pre-gel. Palinso zinanso zosavuta kubalalika ndipo zitha kupangidwa kukhala gel osakaniza kwambiri. Nthawi yokonzekera, kugwiritsa ntchito madzi ofunda kumatha kulimbikitsa njirayi.
Lera
Mankhwala omwe amagwiritsidwa ntchito kwambiri pa cellulosic ndihydroxyethyl cellulose (hec). Kuyenda Kwabwino Kwambiri ndi Kumata, Madzi osakwanira, anti-nkhungu ndi zinthu zina, sizigwiritsidwa ntchito kawirikawiri m'mawu mafakitale.
Mukamagwiritsa ntchito, imatha kuwonjezeredwa mwachindunji kapena kusungunuka m'madzi pasadakhale.
Asanawonjezere, chidwi chiyenera kulipidwa kuti lisinthe ma pH a dongosolo la alkaliline, lomwe limatha kuchitika kwake mwachangu.
Acrylic
Makulidwe a acrylic ali ndi ntchito zina mu mafakitale. Zimagwiritsidwa ntchito makamaka ngati chinthu chimodzi chokhacho komanso kuchuluka kwa zigawo zambiri, monga zitsulo zitsulo komanso zoteteza.
Ku Topcoat (makamaka Topcoat), chinthu chimodzi, kuphika varnish, utoto wapamwamba kwambiri ndi machitidwe ena, amakhala ndi vuto lina ndipo sangakhale woyenera.
Mfundo yokulirapo ya acrylic trickener ndi: Gulu la Carboxyl pamtunda wa polymer limasinthidwa kukhala carboxylate wa alkalinine, ndipo kukula kwake kumatheka kudzera mu eleclrostatic.
Chifukwa chake, pH ya kachitidwe iyenera kusinthidwa kukhala alkiline musanagwiritse ntchito, ndipo pH imayenera kukhalabe> 7 panthawi yosungirako.
Itha kuwonjezeredwa mwachindunji kapena kuchepetsedwa ndi madzi.
Itha kusungunuka pogwiritsa ntchito machitidwe ena omwe amafuna kukhazikika kwa maonedwe. Choyamba: Muyambe kuchepetsa mawu a acrylic ndi madzi, kenako onjezerani adjuster pamene akuyambitsa. Pakadali pano, yankho limakweza mwachidziwikire, kuchokera mkaka wamkaka woyera mpaka pa phala lowoneka bwino, ndipo amatha kusiyidwa kuti ayimire pambuyo pake.
Kugwiritsa ntchito njirayi kunapereka kukula kwake, koma imatha kukulitsa kukula koyambirira, komwe kumayenera kukhazikika kwa ma vinyo atapangidwa.
Mu kapangidwe kake ndi kapangidwe ka H1260 yochokera ku utoto wa utoto wa ufa wa ufa wa utoto wa utoto, wokulirapo umagwiritsidwa ntchito motere.
Polyirethane
Ounirethane Otsatsa a polyurethara amagwiritsidwa ntchito kwambiri zokutira mafakitale ndi magwiridwe antchito abwino ndipo ndioyenera kugwiritsa ntchito machitidwe osiyanasiyana.
Pogwiritsa ntchito, palibe zofunikira pa Ph ya kachitidwe, imatha kuwonjezeredwa mwachindunji kapena pambuyo pa kusamala, kaya ndi madzi kapena zosungunulira. Otsatsa ena ali ndi hydrophilicity osayenera ndipo sangathe kuchepetsedwa ndi madzi, koma imatha kuchepetsedwa ndi ma sol sol.
Emulsion System
Makina a Emulsion (kuphatikiza acrylic emulsions ndi hydroxypropyl emulsions) alibe ma solsions ndipo ndi osavuta kwambiri. Ndikofunika kuwawonjezera pambuyo pa kuchepetsedwa. Mukamachepetsa, malinga ndi luso la kukula kwa Thicker, kuchepetsa kuchuluka.
Ngati luso la kukulali ndi lotsika, gawo la kuchepa liyenera kukhala lotsika kapena losachepetsedwa; Ngati luso la kukulali ndi lalitali, chiwerengero cha kuchepa chizikhala chokwera.
Mwachitsanzo, SV-1540 yogwirizana ndi madzi ophatikizira a polyirethar ali ndi luso lalikulu. Mukamagwiritsa ntchito mu emulsion dongosolo, nthawi zambiri limasungunuka katatu kapena 20 (10% kapena 5%) kuti mugwiritse ntchito.
Hydroxypropropyl obalalika
Hydroxypropropropropropropropropropropropropropropropropropropropropper renfon imakhala ndi kuchuluka kwa zosungunulira, ndipo sizophweka kumakundani pa ntchito yopanga utoto. Chifukwa chake, polyirethane nthawi zambiri amawonjezeredwa munthawi yotsika kapena kuwonjezera popanda kuchepetsedwa mu mtundu uwu.
Ndikofunika kudziwa kuti chifukwa cha mphamvu zambiri zamagetsi, zotsatira za kukula kwa mabatani a polyirethane mu mtundu uwu sizachidziwikire, ndipo tanthauzo labwino limafunikira kusankhidwa mwanjira yolongosoka. Apa, ndikufuna kulimbikitsa TV-1140 yogwirizana ndi madzi ogwirizana ndi ma polirethating'ono, omwe ali ndi luso lalikulu kwambiri ndipo ali ndi magwiridwe antchito abwino kwambiri.
Post Nthawi: Apr-25-2024