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ʻO ka pilikia o ka huʻihuʻi i ka hoʻomaʻamaʻa wai ua pilikia nā kānaka he nui. I ka pae mua o ka hoʻokō ʻana, ka ʻūhā, ka ʻūhā surfactant, ka ʻūhā hopena, ka ʻūhā peroxide, ka huʻa i hana ʻia e ka hoʻohui ʻana i ka bactericide non oxidizing i ka mālama ʻana i ka wai, a pēlā aku. Hoʻopuka piha kēia ʻatikala i ka loina, ka hoʻokaʻawale ʻana, ke koho ʻana a me ke ʻano o ka defoamer!

★ Hoʻopau i ka huʻa

1. Nā ʻano hana kino

Mai ka hiʻohiʻona kino, ʻo nā ala e hoʻopau ai i ka ʻūhā ka nui o ka waiho ʻana i ka baffle a i ʻole kānana kānana, mechanical agitation, static electricity, freezing, heat, steam, ray irradiation, high-speed centrifugation, pressure reduction, high-frequency vibration, instantaneous discharge. a me ka ultrasonic (acoustic liquid control). Hoʻoikaika kēia mau ʻano i ka nui o ka lawe ʻana i ke kinoea ma nā ʻaoʻao ʻelua o ka kiʻiʻoniʻoni wai a me ka hoʻokuʻu ʻana o ka wai o ke kiʻi ʻoniʻoni i nā degere like ʻole, e hoʻohaʻahaʻa i ka kumu paʻa o ka huʻa ma mua o ka mea attenuation, no laila e emi mālie ka nui o ka pua. Eia nō naʻe, ʻo ka hemahema maʻamau o kēia mau ʻano hana, ʻo ia ka mea i kāohi nui ʻia e nā mea kūlohelohe a loaʻa ka haʻahaʻa defoaming rate. ʻO nā mea maikaʻi ʻo ia ka mālama ʻana i ke kaiapuni a me ke kiʻekiʻe o ka hoʻohana hou ʻana.

2. Nā ʻano hana kemika

ʻO nā ʻano hana kemika e hoʻopau ai i ka huʻihue ka mea nui e pili ana i ke ʻano hopena kemika a me ka hoʻohui ʻana i ka defoamer.

ʻO ke kaʻina hana kemika e pili ana i ka hopena kemika ma waena o ka mea hoʻohua a me ka mea hoʻoulu ʻana ma o ka hoʻohui ʻana i kekahi mau reagents e hoʻohua i nā mea hiki ʻole ke hoʻoheheʻe ʻia i ka wai, pēlā e hōʻemi ai i ka neʻe ʻana o ka surfactant i loko o ka kiʻiʻoniʻoni wai a hoʻoikaika i ka haki ʻana o ka ʻōpala. Eia nō naʻe, aia kekahi mau hemahema o kēia ʻano, e like me ka maopopo ʻole o ka hoʻokumu ʻana i ka mea hana foaming a me ka pōʻino o nā mea hiki ʻole ke hoʻokaʻawale i nā lako ʻōnaehana. ʻO ke ʻano defoaming i hoʻohana nui ʻia i nā ʻoihana like ʻole i kēia mau lā ʻo ke ʻano o ka hoʻohui ʻana i nā defoamers. ʻO ka pōmaikaʻi nui loa o kēia ʻano ʻo kona kiʻekiʻe defoaming pono a me ka maʻalahi o ka hoʻohana. Eia naʻe, ʻo ka loaʻa ʻana o kahi defoamer kūpono a kūpono hoʻi ke kī.

★Ke kumu o ka defoamer

ʻO nā Defoamers, ʻike ʻia hoʻi he defoamers, loaʻa kēia mau kumu:

1. ʻO ke ʻano o ka hoʻohaʻahaʻa haʻahaʻa o ka ʻili o ka ʻāina e hiki ai i ka pohā ʻana o ka huʻa ʻana, ʻo ia ka pipi ʻana i nā waiʻona kiʻekiʻe a i ʻole nā ​​​​ʻaila meaʻai e kāpīpī ʻia ma luna o ka huʻa, a ke hoʻoheheʻe ʻia i loko o ka wai puna, e hoʻemi nui ʻia ka haʻalulu o ka ʻili. No ka mea, he haʻahaʻa loa ka hoʻoheheʻe ʻana o kēia mau mea i ka wai, ua kaupalena ʻia ka hoʻemi ʻana o ka haʻalulu o ka ʻili i ka ʻāpana kūloko o ka huʻa, ʻoiai ʻaʻohe loli o ka ʻili o ka ʻili a puni. ʻO ka ʻāpana me ka hoʻohaʻahaʻa ʻana o ka ʻili e huki ikaika ʻia a hoʻolōʻihi ʻia i nā ʻaoʻao āpau, a hope loa.

2. ʻO ka luku ʻia ʻana o ka elasticity membrane e alakaʻi i ka defoamer wāwahi i hoʻohui ʻia i ka ʻōnaehana foam, e hoʻopuehu i ke kino wai-wai, e paʻakikī ai i ka surfactant me ka hopena stabilizing foam e hoʻihoʻi i ka elasticity membrane.

3. Hiki i nā Defoamers e paipai ana i ka hoʻokahe wai kiʻiʻoniʻoni ke hoʻoikaika i ka hoʻokahe wai kiʻiʻoniʻoni, no laila e pohā ai nā ʻōhū. Hiki ke hōʻike i ka paʻa o ka ʻūhā. ʻO ka hoʻohui ʻana i kahi mea e hoʻolalelale ai i ka hoʻoheheʻe ʻana i ka pua hiki ke hana i kahi hana i ka defoaming.

4. ʻO ka hoʻohui ʻana i nā ʻāpana paʻa hydrophobic hiki ke hoʻoheheʻe ʻia nā ʻōhū ma luna o ka ʻili o nā ʻōpū. Hoʻokomo nā ʻāpana paʻa hydrophobic i ka hopena hydrophobic o ka surfactant, e hana ana i ka hydrophobic particles hydrophilic a komo i ka pae wai, no laila ke pāʻani nei i kahi hana i ka defoaming.

5. Hiki i nā surfactants hoʻoheheʻe ʻia a hoʻohuʻahuʻi ke pohā ka ʻōhū. ʻO kekahi mau mea paona haʻahaʻa haʻahaʻa i hiki ke hui pū ʻia me ka hoʻonā hiki ke hoʻoheheʻe i ka surfactant a hoʻemi i kona ʻike kūpono. ʻO nā mea molekole haʻahaʻa me kēia hopena, e like me ka octanol, ethanol, propanol a me nā waiʻona ʻē aʻe, ʻaʻole hiki ke hōʻemi wale i ka neʻe ʻana o ka surfactant ma ka papa honua, akā e hoʻoheheʻe ʻia i loko o ka papa adsorption surfactant, e hōʻemi ana i ka compactness o nā molekala surfactant, pēlā e hoʻonāwaliwali ai i ka paʻa. o ka huʻa.

6.Electrolyte breakdown surfactant papalua uila pāʻani i ka defoaming kuleana i loko o ka pilina o surfactant papalua uwila papa me ka huʻa e hana paʻa huāhu wai. Hiki i ka hoʻohui ʻana i ka electrolyte maʻamau ke hoʻohiolo i ka papa uila papalua surfactant.

★ Hoʻokaʻawale ʻana i nā defoamers

Hiki ke hoʻokaʻawale ʻia nā defoamers maʻamau i silicone (resin), surfactant, alkane, a me ka ʻaila mineral e like me kā lākou haku.

1. Hoʻohana ʻia nā defoamers silicone (resin), i ʻike ʻia he emulsion defoamers, e ka emulsifying a me ka hoʻopuehu ʻana i ka resin silicone me nā emulsifiers (surfactants) i loko o ka wai ma mua o ka hoʻohui ʻana i ka wai ʻino. ʻO ka pauka maikaʻi ʻo Silicon dioxide kekahi ʻano defoamer-based silicon me ka hopena defoaming ʻoi aku ka maikaʻi.

2. ʻO nā surfactants e like me nā mea hoʻoheheʻe he mau emulsifiers maoli nō ia, ʻo ia hoʻi, hoʻohana lākou i ka hoʻopuehu ʻana o nā surfactants e mālama i nā mea hoʻohua i loko o kahi kūlana emulsified paʻa i loko o ka wai, i pale aku ai i ka hoʻokumu ʻana o ka huʻa.

3. ʻO nā defoamers ma muli o ka alkane he mau mea hoʻoheheʻe i hana ʻia ma ka hoʻoheheʻe ʻana a me ka hoʻopuehu ʻana i ka wax paraffin a i ʻole nā ​​​​mea i loaʻa mai me ka hoʻohana ʻana i nā emulsifiers. Ua like ko lākou hoʻohana ʻana me ka surfactant based emulsifying defoamers.

4.Mineral aila ka mea nui defoaming. No ka hoʻomaikaʻi ʻana i ka hopena, i kekahi manawa hui pū ʻia ke kopa metala, ka aila silicone, ka silica a me nā mea ʻē aʻe no ka hoʻohana ʻana. Eia hou, hiki ke hoʻohui ʻia nā surfactant like ʻole i kekahi manawa e hoʻomaʻamaʻa i ka hoʻopuehu ʻana o ka ʻaila mineral ma luna o ka ʻili o ka hopena huʻi a i ʻole e hoʻopuehu like i nā kopa metala a me nā mea ʻē aʻe i loko o ka ʻaila mineral.
★ ʻO nā pono a me nā pōʻino o nā ʻano defoamers like ʻole

ʻO ka noiʻi a me ka hoʻohana ʻana i nā mea hoʻomaʻemaʻe organik e like me nā aila mineral, amides, nā ʻawaʻawa haʻahaʻa, nā ʻakika momona a me nā esters momona momona, phosphate esters, etc. Loaʻa iā lākou nā pōmaikaʻi o ka loaʻa maʻalahi o nā mea maka, ka hana kiʻekiʻe o ke kaiapuni, a me nā kumu kūʻai haʻahaʻa; ʻO nā hemahema he haʻahaʻa haʻahaʻa defoaming pono, kikoʻī ikaika, a me nā kūlana hoʻohana paʻakikī.

ʻO nā polyether defoamers ka lua o nā hanauna defoamers, ʻo ka hapa nui me nā polyeter kaulahao pololei, nā polyether e hoʻomaka ana mai ka ʻona a i ʻole ammonia, a me nā derivatives polyether me ka esterification hui hope. ʻO ka pōmaikaʻi nui loa o nā polyether defoamers ko lākou ikaika anti foaming. Eia kekahi, loaʻa i kekahi mau polyether defoamers nā waiwai maikaʻi loa e like me ke kūpaʻa wela kiʻekiʻe, ka ikaika ikaika a me ke kūpaʻa alkali; Ua kaupalena ʻia nā hemahema e nā kūlana wela, nā wahi noi haiki, hiki ke hoʻoheheʻe ʻia, a me ka haʻahaʻa haʻahaʻa haʻahaʻa.

Organic silicone defoamers (kolu-hanauna defoamers) i ikaika defoaming hana, hikiwawe defoaming hiki, haʻahaʻa volatility, ʻaʻohe mea make i ke kaiapuni, ʻaʻohe physiological inertia, a me ka laulā o nā noi. No laila, loaʻa iā lākou nā hiʻohiʻona noi ākea a me ka nui o ka mākeke mākeke, akā maikaʻi ʻole kā lākou hana defoaming.

Hoʻohui ʻia ka polysiloxane defoamer i hoʻololi ʻia i nā pono o nā polyether defoamers a me organosilicon defoamers, a ʻo ia ke alakaʻi hoʻomohala o nā defoamers. I kekahi manawa hiki ke hoʻohana hou ʻia ma muli o kona hiki ke hoʻololi ʻia, akā i kēia manawa he liʻiliʻi nā ʻano o ia mau defoamers a aia nō lākou i ka pae noiʻi a me ka hoʻomohala ʻana, e hopena i nā kumukūʻai kiʻekiʻe.

★ Ke koho ʻana i nā defoamers

Pono ke koho ʻana i nā defoamers i nā pae hoʻohālike:

1. Inā hiki ʻole ke hoʻoheheʻe ʻia a ʻaʻole hiki ke hoʻoheheʻe ʻia i loko o ka hoʻoheheʻe ʻana, e uhaʻi ia i ka pua. Pono e hoʻopaʻa ʻia ka defoamer ma luna o ke kiʻi ʻoniʻoni. No nā defoamers, pono lākou e hoʻopaʻa ʻia a hoʻopaʻa ʻia i ka manawa koke, ʻoiai no ka mea hoʻopau i ka huʻa, pono e mālama mau ʻia lākou ma kēia mokuʻāina. No laila aia nā defoamers i kahi kūlana supersaturated i nā wai huʻa, a ʻo nā mea hiki ʻole ke hoʻoheheʻe ʻia a maikaʻi ʻole paha ke hiki ke hiki i ka supersaturation. ʻAʻole hiki ke hoʻoheheʻe ʻia a paʻakikī paha e hoʻoheheʻe ʻia, maʻalahi ka hoʻohui ʻana i ke kinoea-wai, maʻalahi ke nānā aku i ka membrane bubble, a hiki ke hana ma nā haʻahaʻa haʻahaʻa. ʻO ka defoamer i hoʻohana ʻia i loko o nā ʻōnaehana wai, nā molekele mea hana, pono e ikaika hydrophobic a nāwaliwali hydrophilic, me kahi waiwai HLB ma ka laulā o 1.5-3 no ka hopena maikaʻi loa.

2. ʻO ka haʻahaʻa haʻahaʻa o ka ʻili ma mua o ka wai huʻa, a aia wale nō i ka wā liʻiliʻi nā pūʻali intermolecular o ka defoamer a ʻoi aku ka haʻahaʻa o ka ʻili o ka ʻili ma mua o ka wai huʻa, hiki i nā ʻāpana defoamer ke komo a hoʻonui i ke kiʻi ʻoniʻoni. He mea pono e hoʻomaopopo ʻia ʻaʻole ʻo ka ʻili o ka ʻili o ka ʻūhā ʻana i ka ʻili o ka hoʻonā, akā ʻo ka ʻili o ka ʻili o ka hāhā.

3. Aia kekahi degere o ka pili me ka wai hu'a. ʻOiai ʻo ke kaʻina hana defoaming he hoʻokūkū maoli nō ia ma waena o ka wikiwiki o ka hāʻule ʻana o ka huʻihuʻi a me ka wikiwiki o ka hoʻoulu ʻana o ka huʻihuʻi, pono e hiki i ka defoamer ke hoʻopuehu koke i ka wai huʻa i hiki ke pāʻani wikiwiki i kahi ʻano ākea o ka wai huʻa. No ka hoʻopuehu koke ʻana o ka defoamer, pono e loaʻa i ka mea hana o ka defoamer ke ʻano o ka pilina me ka hopena huʻa. ʻO nā mea hana o nā defoamers kokoke loa i nā wai e hoʻohuhū a e hoʻoheheʻe ʻia; Kakaʻikahi a paʻakikī ke hoʻopuehu. Aia wale nō ke kūpono ka pili ʻana e hiki ke maikaʻi ka hopena.

4. ʻAʻole hoʻokō nā Defoamers i nā hopena kemika me nā wai huʻa. Ke hana ka defoamers me ka wai huʻihuʻi, nalowale ko lākou pono a hiki ke hana i nā mea ʻino e pili ana i ka ulu ʻana o ka microbial.

5.Low volatility a me ka lōʻihi o ka hana. ʻO ka mea mua, pono e hoʻoholo inā ʻo ka ʻōnaehana e koi ai i ka hoʻohana ʻana i nā defoamers i ka wai a i ʻole ka aila. I loko o ka ʻoihana fermentation, pono e hoʻohana ʻia nā defoamers e pili ana i ka aila e like me ka polyether modified silicone a i ʻole polyether based. Pono ka ʻoihana hoʻoheheʻe wai i nā mea hoʻoheheʻe wai a me nā defoamers silicon organik. E koho i ka defoamer, e hoʻohālikelike i ka nui i hoʻohui ʻia, a ma muli o ke kumukūʻai kuhikuhi, e hoʻoholo i ka huahana defoamer kūpono loa a waiwai.

★Nā mea e pili ana i ka pono o ka hoʻohana defoamer

1. ʻO ka hoʻopuehu ʻana a me nā waiwai ʻili o nā defoamers i loko o ka hoʻonā e hoʻopilikia nui i nā waiwai defoaming ʻē aʻe. Pono nā defoamers i ka pae kūpono o ka hoʻopuehu ʻana, a hiki i nā ʻāpana nui a liʻiliʻi paha ka nui ke hoʻopilikia i kā lākou hana defoaming.

2. Hoʻohālikelike o ka defoamer i loko o ka ʻōnaehana ʻōhua Ke hoʻoheheʻe loa ʻia ka surfactant i loko o ka wai wai, hoʻonohonoho maʻamau ia i ka hoʻonohonoho ʻana i ke kinoea-wai o ka pahu e hoʻopaʻa i ka huʻa. Ke noho ka surfactant i loko o ka insoluble a i ʻole supersaturated state, hoʻopuehu nā ʻāpana i loko o ka hoʻonā a hōʻiliʻili ma luna o ka huʻa, a hana ka huʻa ma ke ʻano he defoamer.

3. Hiki ke hoʻololi i ka hana o ka defoamer i ka mahana o ka ʻōnaehana hoʻoheheʻe a me ka mahana o ka wai ʻawaʻawa. Ke kiʻekiʻe ke kiʻekiʻe o ka wela o ka wai huʻi, pono e hoʻohana i ka defoamer kūʻokoʻa kiʻekiʻe kiʻekiʻe, no ka mea inā hoʻohana ʻia ka defoamer maʻamau, e hoʻemi nui ʻia ka hopena defoaming, a e hoʻopau pololei ka defoamer i ka wai.

4. ʻO ka paʻi, ka mālama ʻana, a me ka lawe ʻana i nā defoamers kūpono no ka mālama ʻana ma 5-35 ℃, a ʻo ke ola o ka mālama ʻana he 6 mau mahina. Mai waiho kokoke i kahi kumu wela a i ʻole e wehe i ka lā. E like me ka hoʻohana maʻamau o ka mālama ʻana i nā kemika, e hōʻoia i ka hoʻopaʻa ʻana ma hope o ka hoʻohana ʻana e pale aku i ka pōʻino.

6. ʻO ka lākiō hoʻohui o nā defoamers i ka hoʻonā kumu a me ka hoʻonā diluted i kekahi deviation i kekahi nui, a ʻaʻole like ka lakio. Ma muli o ka haʻahaʻa haʻahaʻa o ka surfactant, ʻaʻole paʻa loa ka lotion defoamer i hoʻoheheʻe ʻia a ʻaʻole e hoʻopau koke. ʻAʻole maikaʻi ka hana defoaming, ʻaʻole kūpono no ka mālama lōʻihi. Manaʻo ʻia e hoʻohana koke ma hope o ka dilution. Pono e hōʻoia ʻia ka ʻāpana o ka defoamer i hoʻohui ʻia ma o ka hoʻāʻo ʻana ma ka pūnaewele e loiloi i kona pono, a ʻaʻole pono e hoʻohui nui ʻia.

★Ka helu o ka defoamer

Nui nā ʻano defoamers, a ʻokoʻa ke ʻano i koi ʻia no nā ʻano defoamers like ʻole. Ma lalo nei, e hoʻolauna mākou i ke ʻano o nā ʻano defoamers ʻeono:

1. ʻO ka waiʻona defoamer: Ke hoʻohana nei i ka waiʻona defoamers, ke ʻano maʻamau i loko o 0.01-0.10%.

2. ʻO nā mea hoʻomaʻemaʻe aila: ʻO ka nui o nā defoamers ma muli o ka aila i hoʻohui ʻia ma waena o 0.05-2%, a ʻo ka nui o ka momona ester defoamers i hoʻohui ʻia ma waena o 0.002-0.2%.

3. Amide defoamers: ʻOi aku ka maikaʻi o ka hopena o ka Amide defoamers, a ʻo ka nui o ka hoʻohui i loko o 0.002-0.005%.

4. Phosphoric acid defoamer: Phosphoric acid defoamers ka mea maʻamau i hoʻohana ʻia i nā fibers a me nā aila lubricating, me ka nui i hoʻohui ʻia ma waena o 0.025-0.25%.

5. Amine defoamer: Hoʻohana nui ʻia nā defoamers amine i ka hana fiber, me ka nui o 0.02-2%.

7.Ether based defoamers: Ether based defoamers ua maʻa mau i ka pepa paʻi, dyeing, a me ka hoʻomaʻemaʻe, me ka typical dosage o 0.025-0.25%.