Te tikanga o te matū matangā mea whakakore hinue hangai ana ki te ariā hurihanga ā-wāhanga-whakamuri. Whai muri i te tāpiri i te demulsifier, ka puta he hurihanga ā-wāhanga, ka puta he surfactants e whakaputa ana i te momo emulsion rerekē ki tērā i hangaia e te emulsifier (demulsifier whakamuri). Ka taunekeneke ēnei demulsifiers ki ngā emulsifiers hydrophobic hei hanga matatini, ā, ka whakakore i ngā āhuatanga emulsifying. Ko tētahi atu tikanga ko te pakaru o te kiriata interfacial mā te tukinga. I raro i te wera, i te whakaoho rānei, ka tukinga pinepine ngā demulsifiers ki te kiriata interfacial o te emulsion—e piri ana ki runga, e nekehia ana rānei ētahi ngota surfactant—e whakararu ana i te kiriata, e arahi ana ki te flocculation, te coalescence, ā, i te mutunga ko te demulsification.
He mea noa te puta o ngā hinu mata i te wā e hangaia ana, e whakamahia ana hoki te hinu. Ko te nuinga o te hinu mata o te ao ka hangaia i roto i te āhua emulsified. Ko te emulsion he mea hanga mai i te iti rawa e rua ngā wai e kore e taea te whakaranu, ka marara tetahi hei pata tino angiangi (tata ki te 1 mm te whānui) e iri ana i roto i tetahi atu.
Ko te tikanga, ko tētahi o ēnei wai he wai, ko tētahi he hinu. Ka taea te whakamarara pai i te hinu ki roto i te wai, ka hanga he ranunga hinu-i-roto-i-te-wai (O/W), ko te wai te wāhanga tonu, ko te hinu te wāhanga marara. I tetahi atu taha, ki te mea ko te hinu te wāhanga tonu, ā, ka marara te wai, ka hanga he ranunga wai-i-roto-i-te-hinu (W/O). Ko te nuinga o ngā ranunga hinu mata no te momo whakamutunga.
I ngā tau tata nei, kua arotahi ngā rangahau mō ngā tikanga whakakorenga hinu mata ki ngā tirohanga taipitopito o te whakakotahitanga o ngā pata me te pānga o ngā mea whakakorenga ki te rheology o te hononga. Heoi, nā te uaua o ngā taunekeneke whakakorenga-emulsion, ahakoa te rangahau whānui, kāore anō kia kotahi te ariā mō te tikanga whakakorenga.
He maha ngā tikanga e whakaaetia whānuitia ana:
1. Te nekehanga o te ngota ngota: Ka whakakapia ngā emulsifier e ngā ngota demulsifier i te atanga, ka whakararu i te emulsion.
2. Te whakarerekētanga o ngā kita: E whakaatu ana ngā rangahau mōkito he takirua, he maha rānei ngā paparanga wai o ngā whakapūhui W/O e wehea ana e ngā mowhiti hinu. I raro i te wera, te whakaoho, me te mahi whakakore i ngā matū, ka honoa ēnei paparanga, ka puta he hononga o ngā pata wai.
Hei tāpiri, e whakaatu ana ngā rangahau ā-rohe mō ngā pūnaha whakaemulsion O/W me tutuki i te demulsifier pai ngā paearu e whai ake nei: te kaha o te mahi mata, te ngāwari ki te whakamakuku, te kaha ki te flocculation, me te mahi coalescence whai hua.
Ka taea te whakarōpū i ngā demulsifiers i runga i ngā momo surfactant:
•Ngā mea whakakore i ngā matū anionika: Kei roto ko ngā carboxylates, ngā sulfonates, me ngā polyoxyethylene fatty sulfates. Kāore i te tino whai hua, he nui ngā horopeta e hiahiatia ana, ā, he tairongo ki ngā electrolytes.
•Ngā mea whakakore i ngā matū cationic: Ko te nuinga he tote ammonium quaternary, he whai hua mō te hinu māmā engari kāore e pai mō te hinu taumaha, te hinu kua tawhito rānei.
•Ngā kaiwhakakore matū kore-ionic: Kei roto ko ngā polyether poraka i tīmatahia e ngā amine, ngā waipiro rānei, ngā polyether poraka kapia alkylphenol, ngā polyether poraka kapia phenol-amine, ngā kaiwhakakore matū e ahu mai ana i te silicone, ngā kaiwhakakore matū taumaha ngota tino teitei, ngā polyphosphate, ngā polyether poraka kua whakarerekētia, me ngā kaiwhakakore matū zwitterionic (hei tauira, ngā kaiwhakakore matū hinu mata e ahu mai ana i te imidazoline).
Wā tuku: 22 o Ākuhata-2025