ʻO ka Defoaming ka hiki o kahi uhi e hoʻopau i ka huʻa i hana ʻia i ka wā o ka hana ʻana a me ke kaʻina hana.Nā mea hoʻoheheʻehe ʻano mea hoʻohui i hoʻohana ʻia e hōʻemi i ka huʻa i hana ʻia i ka wā o ka hana ʻana a/a i ʻole ka hoʻohana ʻana i nā uhi. No laila he aha nā mea e pili ana i ka defoaming o nā uhi?

1. Ka haʻalulu o ka ʻili
He hopena nui ka ʻili o ka ʻili i ka defoamer. Pono e haʻahaʻa ka haʻahaʻa o ka ʻili o ka defoamer ma mua o ka uhi ʻana, inā ʻaʻole hiki iā ia ke hoʻokaʻawale a keʻakeʻa i ka pua. ʻO ke kuʻekuʻekuʻe o ka ʻili he mea hoʻololi, no laila, i ke koho ʻana i kahi defoamer, pono e noʻonoʻo ʻia ka ʻili o ka ʻili mau a me ka hoʻololi ʻana o ka ʻili o ka ʻōnaehana.

2. Nā mea hoʻohui ʻē aʻe
ʻO ka hapa nui o nā surfactants i hoʻohana ʻia i ka uhi ʻana ʻaʻole kūpono me nā defoamers. ʻO ka mea nui, nā emulsifiers, ka pulu a me ka dispersing agents, leveling agents, thickeners, etc. e hoʻopilikia i ka hopena o nā defoamers. No laila, i ka hui ʻana i nā mea hoʻohui like ʻole, pono mākou e hoʻolohe i ka pilina ma waena o nā mea hoʻohui like ʻole a koho i kahi helu kaulike maikaʻi.

3. Nā kumu ho'ōla
Ke komo ka pena i ka kuke ʻana i ka wela wela ma ka lumi wela, e hāʻule koke ka viscosity a hiki ke neʻe i ka ʻili. Eia naʻe, ma muli o ka volatilization o ka solvent, ka ho'ōla ʻana o ka pena, a me ka piʻi ʻana o ka viscosity o ka ʻili, e paʻa ka ʻōhū i loko o ka pena, no laila e paʻa ʻia ma ka ʻili, e hopena i nā puka shrinkage a me nā pinholes. No laila, ʻo ka mahana bakena, ka wikiwiki o ka mālama ʻana, ka helu volatilization solvent, a me nā mea ʻē aʻe e pili pū i ka hopena defoaming.

4. Maʻiʻo paʻa, viscosity, a me ka elasticity o nā uhi
ʻO nā uhi mānoanoa paʻa kiʻekiʻe, nā uhi viscosity kiʻekiʻe, a me nā uhi elasticity kiʻekiʻe he paʻakikī loa e hoʻopau. Nui nā kumu i kūpono ʻole i ka defoaming, e like me ka paʻakikī o nā defoamers e hoʻopuehu i loko o kēia mau uhi, ka lohi o ka microbubbles i lilo i macrobubbles, ka emi ʻana o ka hiki o nā huʻa ke neʻe i ka ʻili, a me ka viscoelasticity kiʻekiʻe o nā pua. He mea paʻakikī loa ka hoʻopau ʻana i ka pua i loko o kēia mau uhi, a pono e koho i nā defoamers a me nā deaerators no ka hoʻohana ʻana i ka hui.

5. Keʻano o ka uhiʻana a me ka mahana hana
Nui nā ʻano hana e hoʻopili ai, e like me ka palaki ʻana, ka uhi ʻana i ka roller, ka ninini ʻana, ka ʻili ʻana, ka ʻōpala, ka paʻi pale, a me nā mea ʻē aʻe. ʻO ka palaki ʻana a me ka uhi ʻili e hoʻonui i ka huʻa ma mua o ke kāpī ʻana a me ka ʻōpala. Eia kekahi, ʻo ke kaiapuni kūkulu ʻana me ka wela kiʻekiʻe e hoʻopuka i ka pua ma mua o ka haʻahaʻa haʻahaʻa, akā ʻoi aku ka maʻalahi o ka hoʻopau ʻana i ke kiʻekiʻe.