ʻO ka Polyurethane (nā uhi, nā mea hoʻopaʻa, nā mea hoʻopili)
Moisture i loko o ka PU nenoai reacts me ka isocyanate, aole mea i loko o hookahi-hui a elua-hui polyurethane huahana, i hana amine a me kalapona dioxide, amine hoʻomau i ka hana me ka isocyanate, no laila, i kona hoʻohana e hoʻokuʻu carbon dioxide kinoea i ka manawa like. hana i nā ʻōhū ma ka ʻili o ke kiʻi pena, e alakaʻi ana i ka hōʻino ʻana a i ʻole ka hana ʻana o ka hāʻule ʻana o ke kiʻi pena.
Ua lawa ka 2% ~ 5% o ka molecular sieve (powder) i loko o ka ʻōnaehana e wehe i ke koena o ka moisture i loko o ka ʻōnaehana PU, akā ʻo ia ka hope ma muli o ka wai o ka ʻōnaehana.
ʻAi-corrosive uhi
I loko o ka epoxy zinc-rich primer, e hoʻohua ka nui o ka wai i ka hopena maikaʻi me ka pauka zinc, hana i ka hydrogen, hoʻonui i ke kaomi i loko o ka pahu, hoʻopōkole i ke ola lawelawe o ka primer, ka hopena i ka paʻa, ʻaʻahu i ke kūpaʻa a me ka paʻakikī. o ke kiʻi uhi.Molecular sieve (powder) e like me ka wai absorption desiccant, ʻo ia ka adsorption kino holoʻokoʻa, e hoʻopau i ka wai a ʻaʻohe pane me ka substrate.No laila, palekana a kūpono hoʻi ka sieve molecular no ka ʻōnaehana pale anti-corrosive.
ʻO ka pauka metala
Hiki ke loaʻa nā hopena like i loko o nā ʻili pauka metala, e like me nā uhi pauda aluminika.
Nā huahana pili:JZ-AZ Molecular Sieve