nkhani

Mu utoto wopangidwa ndi madzi, ma emulsion, ma thickeners, ma dispersants, solvents, ndi ma leveling agents amatha kuchepetsa kupsinjika kwa pamwamba pa utoto, ndipo ngati kuchepetsa kumeneku sikukwanira, mutha kusankha chonyowetsa pansi.

Dziwani kuti kusankha bwino mankhwala onyowetsa nthaka kungathandize kuti utoto wopangidwa ndi madzi ukhale wofanana ndi madzi, kotero mankhwala ambiri onyowetsa nthaka ndi mankhwala onyowetsa nthaka.

Mitundu ya zinthu zonyowetsa pansi ndi iyi: zinthu zonyowetsa pansi za anionic, zinthu zonyowetsa pansi zomwe siionic, zinthu zonyowetsa pansi zomwe siionic, zinthu zonyowetsa pansi zomwe siionic, zinthu zonyowetsa pansi zomwe siionic, zinthu zonyowetsa pansi zomwe siionic, zinthu zonyowetsa pansi zomwe siionic, ndi zina zotero. Zofunikira zazikulu za zinthu zonyowetsa pansi ndi izi: kugwira ntchito bwino kwambiri pochepetsa kupsinjika kwa pamwamba, kugwirizana bwino kwa dongosolo (makamaka utoto wopangidwa ndi madzi), nthawi zambiri umasungunuka m'madzi, thovu lochepa komanso thovu losakhazikika, kusamva bwino madzi, ndipo sikungayambitse mavuto obwezeretsanso komanso kutayika kwa ma adhesion.

Zomwe zimagwiritsidwa ntchito kwambiri ponyowetsa nthaka ndi zinthu monga ethylene oxide adducts (monga polyoxyethylene-nonylphenol type), polyorganosilicon type ndi non-ionic fluorocarbon polymer type compounds ndi mitundu ina, yomwe fluorocarbon polymer type wetting agent yochepetsera kupsinjika kwa pamwamba ndiye zotsatira zake zofunika kwambiri.

Maganizo olakwika, omwe amakhudzidwa ndi malonda, ndi akuti zotsatira za kuchepetsa kupsinjika kwa pamwamba zokha zimatsimikiziridwa ngati mphamvu yofalikira ya chophimba pa substrate ndiyo yofunika kwambiri, ndipo izi zimagwirizananso ndi kugwirizana kwa dongosololi ndi kupsinjika koyenera kwa pamwamba.

Kutha kufalikira kwa chinthu chonyowetsa madzi kumatha kudziwika poyesa malo ofalikira a utoto woperekedwa (0.05 ml) pa chinthu chopakidwa kale utoto pambuyo powonjezera kuchuluka kwa chinthu chonyowetsa madzi pa utoto. Zinthu zonyowetsa madzi.

Nthawi zambiri, mphamvu ya mphamvu ya pamwamba yosasunthika siingafanane ndi mphamvu ya utoto yonyowetsa panthawi yomanga, chifukwa utoto umakhala m'munda wopsinjika panthawi yomanga, ndipo mphamvu ya pamwamba ikachepa panthawiyi, zimathandiza kwambiri kunyowetsa. Ma surfactants a fluorocarbon amachepetsa mphamvu ya pamwamba yosasunthika, chomwe ndi chimodzi mwa zifukwa zomwe kugwiritsa ntchito ma surfactants a fluorocarbon sikuli kwakukulu kwambiri kuposa ma silicone.

Kusankha chosungunulira choyenera kungakhalenso ndi mphamvu yabwino yonyowetsa nthaka. Chifukwa chosungunuliracho chimagwirizana ndi dongosolo, mphamvu ya pamwamba imakhala yochepa.

Chisamaliro chapadera: ngati chonyowetsa cha substrate sichinasankhidwe bwino, chimapanga gawo limodzi la molekyulu pa substrate, motero kugwirizana ndi dongosolo lopaka sikulinso bwino, zomwe zidzakhudza kumatirira.

Zinthu zosiyanasiyana zonyowetsa zitha kusakanikirana kuti zithetse vuto la kunyowetsa nthaka.