I. Amafutha Emvelo (okungukuthi Amafutha Esoya, Amafutha Ommbila, njll.)
II. Utshwala Obunekhabhoni Eningi
III. Izinto Zokulwa Nokugqwala Amagwebu zePolyether
IV. I-Silicone Eguquliwe ye-Polyether
...Isahluko esedlule Uhlobo Lwezinto Zokulwa Nokugqwala (1) ukuthola imininingwane.
V. Isithambisi Sokulwa Nokugqwala Kwe-Silicon Engokwemvelo
I-Polydimethylsiloxane, eyaziwa nangokuthi uwoyela we-silicone, iyisakhi esiyinhloko se-silicone defoamer. Uma iqhathaniswa namanzi namafutha avamile, ukucindezeleka kwayo kobuso kuncane, okufanelekela kokubili uhlelo lokugoba olusekelwe emanzini kanye nohlelo lokugoba olusekelwe kumafutha. Uwoyela we-silicone unomsebenzi ophezulu, ukuncibilika okuphansi, izakhiwo zamakhemikhali ezizinzile, ububanzi bokusetshenziswa okulula, ukuguquguquka okuphansi, ukungabi nobuthi, kanye nekhono elivelele lokugoba. Inkinga ukusebenza kahle kokuvinjelwa kwe-foam.

1. Isivikelo Sokugqwala Okuqinile
I-Solid Antifoamer inezici zokuqina okuhle, inqubo elula, ukuthuthwa okulula kanye nokusetshenziswa okulula. Ifaneleka kokubili isigaba samafutha kanye nesigaba samanzi, futhi uhlobo lokusabalala okuphakathi nalo luvelele. Isetshenziswa kabanzi emkhakheni wempuphu yokuwasha ephansi noma engeyona i-foam.

2. Isithambisi Sokulwa Nokugqwala Kwe-Emulsion
Uwoyela we-silicone ku-emulsion defoamer unokucindezeleka okukhulu, futhi i-emulsification coefficient inkulu kakhulu. Uma i-emulsifier ikhethiwe ngendlela engafanele, izobangela ukuthi i-defoaming agent ibe yizingqimba futhi iguquke ngesikhathi esifushane. Ukuqina kwe-emulsion kubaluleke kakhulu kwikhwalithi ye-defoaming agent. Ngakho-ke, ukulungiswa kwe-emulsion type silicone defoamer kugxile ekukhetheni i-emulsifier. Ngesikhathi esifanayo, i-emulsion defoamer inomthamo omkhulu ku-defoamer ye-silicone enezici zentengo ephansi, ububanzi bokusetshenziswa, umphumela osobala we-defoaming, njalo njalo. Ngokuthuthuka kobuchwepheshe bokwenza, i-emulsion defoamer izothuthuka kakhulu.

3. Isixazululo Sokulwa Nokugqwala
Kuyisixazululo esenziwe ngokuncibilikisa uwoyela we-silicone ku-solvent. Umgomo wayo wokukhipha ama-foam ukuthi izingxenye zikawoyela we-silicone zithwalwa yi-solvent bese zihlakazwa ku-foam solution. Kule nqubo, uwoyela we-silicone uzoncibilika kancane kancane abe amaconsi ukuze kuqedwe ukukhishwa ama-foam. Uwoyela we-silicone oncibilikiswe ohlelweni lwesisombululo se-organic olungeyona i-aqueous, njenge-polychloroethane, i-toluene, njll., ungasetshenziswa njengesixazululo sikawoyela sokususa ama-foam.

4. Isithambisi Sokugqwala Amafutha
Ingxenye eyinhloko ye-oil defoamer yi-dimethyl silicone oil. I-dimethyl silicone oil emsulwa ayinawo umphumela we-defoaming futhi idinga ukuhlanganiswa. Ukucindezeleka kobuso be-emulsified silicone kwehla ngokushesha, futhi inani elincane lingaholela ekuqhekekeni kwe-foam okunamandla kanye nokuvinjelwa. Lapho i-silicone oil ixutshwa nengxenye ethile yabasizi be-silica abaphathwa nge-hydrophobically, i-oil compound defoamer ingakhiwa. I-Silicon dioxide isetshenziswa njengesigcwalisi, ngoba inani elikhulu lamaqembu e-hydroxyl ebusweni bayo lingathuthukisa amandla okuhlakazeka kawoyela we-silicone ohlelweni lwe-foaming, landise ukuzinza kwe-emulsion, futhi ngokusobala lithuthukise isici se-defoaming se-silicone defoamer.

Ngenxa yokuthi uwoyela we-silicone uthambile, i-silicone defoamer inomphumela omuhle kakhulu wokuhlanza isixazululo esincibilikayo ku-oyela. Kodwa-ke, la maphuzu kufanele aqashelwe lapho usebenzisa i-silicone defoamer:

● I-silicone defoamer evithike kakhulu inomphumela omuhle wokuhlambulula, kodwa ukuphikelela kwayo akukuhle; i-silicone defoamer evithike kakhulu inomphumela ohamba kancane wokuhlambulula kodwa ukuphikelela okuhle.
● Uma i-viscosity yesisombululo se-foam iphansi, kungcono ukhethe i-silicone defoamer ene-viscosity ephezulu. Ngokuphambene nalokho, uma i-viscosity yesisombululo se-foam iphakeme, kungcono ukhethe i-silicone defoamer ene-viscosity ephansi.
● Isisindo sama-molecule se-silicone defoamer enamafutha sinethonya elithile emphumeleni wayo wokuhlanza.
● I-defoamer enesisindo sama-molecule esincane kulula ukuyihlakaza nokuyincibilikisa, kodwa ayinakho ukuphikelela. Ngokuphambene nalokho, ukusebenza kwe-defoamer yesisindo sama-molecule aphezulu akukuhle, futhi i-emulsification inzima, kodwa ukuncibilika kwayo akukuhle futhi ukuqina kwayo kuhle.