I kēia lā, e nānā mākou i ka hoʻohui ʻana i nā ʻano kikoʻī o nā thickeners.
ʻO nā ʻano o nā mānoanoa maʻamau i hoʻohana ʻia he inorganic, cellulose, acrylic, a me polyurethane.
ʻAnoʻano
ʻO nā mea inorganic ka nui o ka bentonite, fumed silicon, etc., i hoʻohui pinepine ʻia i ka slurry no ka wili ʻana, no ka mea paʻakikī ke hoʻopuehu loa iā lākou ma muli o ka ikaika hui ʻana o ka pena.
Aia kekahi ʻāpana liʻiliʻi e hoʻopuehu mua ʻia a hoʻomākaukau ʻia i kahi gel no ka hoʻohana ʻana.
Hiki iā lākou ke hoʻohui ʻia i nā pena ma ka wili ʻana e hana i kahi nui o pre-gel. Aia kekahi mau mea maʻalahi e hoʻopuehu a hiki ke hana ʻia i gel e ka wikiwiki wikiwiki. I ka wā o ka hoʻomākaukau ʻana, hiki i ka hoʻohana ʻana i ka wai mahana ke hāpai i kēia kaʻina hana.
Cellulose
ʻO ka huahana cellulosic i hoʻohana pinepine ʻiahydroxyethyl cellulose (HEC). ʻAʻohe kahe a me ka pae ʻana, lawa ʻole ka pale wai, anti-mold a me nā waiwai ʻē aʻe, ʻaʻole i hoʻohana pinepine ʻia i nā pena ʻoihana.
Ke hoʻohana ʻia, hiki ke hoʻohui pololei a hoʻoheheʻe ʻia i ka wai ma mua.
Ma mua o ka hoʻohui ʻana, pono e uku ʻia ka nānā ʻana i ka hoʻoponopono ʻana i ka pH o ka ʻōnaehana i nā kūlana alkaline, kahi kūpono i kona ulu wikiwiki.
ʻAlika
Loaʻa i nā mānoanoa Acrylic kekahi mau noi i nā pena ʻoihana. Hoʻohana nui ʻia ia i loko o nā uhi maʻamau e like me ka mea hoʻokahi a me ka ratio pigment-to-base kiʻekiʻe, e like me nā hale kila a me nā primers pale.
I loko o ka topcoat (ʻoi aku ka maʻemaʻe o ka topcoat), ʻelua-component, baking varnish, kiʻekiʻe-gloss pena a me nā ʻōnaehana ʻē aʻe, aia kekahi mau hemahema a ʻaʻole hiki ke mākaukau piha.
ʻO ke kumu mānoanoa o ka mānoanoa acrylic: ʻo ka hui carboxyl ma ke kaulahao polymer ua hoʻololi ʻia i kahi carboxylate ionized ma lalo o nā kūlana alkaline, a loaʻa ka hopena mānoanoa ma o ka electrostatic repulsion.
No laila, pono e hoʻoponopono ʻia ka pH o ka ʻōnaehana i ka alkaline ma mua o ka hoʻohana ʻana, a pono e mālama ʻia ka pH ma> 7 i ka wā o ka mālama ʻana.
Hiki ke hoʻohui pololei a hoʻoheheʻe ʻia me ka wai.
Hiki ke hoʻoheheʻe mua ʻia no ka hoʻohana ʻana i kekahi mau ʻōnaehana e koi ana i ka paʻa viscosity kiʻekiʻe. ʻO ia: e hoʻoheheʻe mua i ka mānoanoa acrylic me ka wai, a laila hoʻohui i ka pH adjuster i ka wā e hoʻoulu ai. I kēia manawa, mānoanoa ka hāʻina, mai ke keʻokeʻo waiu a hiki i ka paʻi akaka, a hiki ke waiho ʻia e kū no ka hoʻohana ʻana ma hope.
ʻO ka hoʻohana ʻana i kēia ʻano hana e kaumaha ai i ka pono mānoanoa, akā hiki iā ia ke hoʻonui piha i ka mānoanoa i ka wā mua, kahi kūpono i ka paʻa o ka viscosity ma hope o ka hana ʻana o ka pena.
I ka hoʻokumu ʻana a me ke kaʻina hana o ka H1260 wai i hoʻokumu ʻia i hoʻokahi ʻāpana kala kala kala, hoʻohana ʻia ka mānoanoa ma kēia ʻano.
Polyurethane
Hoʻohana nui ʻia nā mānoanoa polyurethane i nā ʻāpana ʻoihana me ka hana maikaʻi loa a kūpono no ka hoʻohana ʻana i nā ʻōnaehana like ʻole.
I ka noi, ʻaʻohe koi i ka pH o ka ʻōnaehana, hiki ke hoʻohui pololei a ma hope o ka dilution, me ka wai a i ʻole ka solvent. ʻAʻole hiki ke hoʻoheheʻe ʻia me ka wai, akā hiki ke hoʻoheheʻe ʻia me nā solvents.
ʻōnaehana emulsion
ʻAʻole i loaʻa i nā ʻōnaehana emulsion (me nā emulsions acrylic a me nā emulsion hydroxypropyl) nā mea hoʻoheheʻe a maʻalahi hoʻi e mānoanoa. ʻOi aku ka maikaʻi e hoʻohui iā lākou ma hope o ka dilution. Ke hoʻoheheʻe ʻia, e like me ka mānoanoa o ka mānoanoa, e hoʻoheheʻe i kekahi ratio.
Inā haʻahaʻa ka pono mānoanoa, pono e haʻahaʻa ka ratio dilution a i ʻole diluted; inā he kiʻekiʻe ka hana mānoanoa, ʻoi aku ke kiʻekiʻe o ka dilution ratio.
No ka laʻana, ʻo SV-1540 wai-ka polyurethane hui mānoanoa he kiʻekiʻe mānoanoa kiʻekiʻe. Ke hoʻohana ʻia i loko o kahi ʻōnaehana emulsion, maʻamau e hoʻoheheʻe ʻia 10 mau manawa a i ʻole 20 mau manawa (10% a i ʻole 5%) no ka hoʻohana.
Hoʻopuehu Hydroxypropyl
ʻO ka hydroxypropyl dispersion resin ponoʻī kekahi nui o ka solvent, a ʻaʻole maʻalahi ke mānoanoa i ka wā o ka hana pena. No laila, hoʻohui pinepine ʻia ka polyurethane i kahi ratio dilution haʻahaʻa a i ʻole hoʻohui ʻia me ka dilution ʻole i kēia ʻano ʻōnaehana.
Pono e hoʻomaopopo ʻia ma muli o ka hopena o ka nui o nā solvents, ʻaʻole maopopo ka hopena mānoanoa o nā mānoanoa polyurethane he nui i kēia ʻano ʻōnaehana, a pono e koho ʻia kahi mānoanoa kūpono ma ke ʻano i kuhikuhi ʻia. Maʻaneʻi, makemake wau e paipai i kahi mānoanoa hui polyurethane wai SV-1140, nona ka hana mānoanoa kiʻekiʻe loa a he hana maikaʻi loa i nā ʻōnaehana kiʻekiʻe.
Ka manawa hoʻouna: Apr-25-2024