Idethi yokuthunyelwe:17,JAN,2022

I-Siliconei-defoameri-emulsion emhlophe ye-viscous. Isetshenziswe emikhakheni eyahlukene yezimboni kusukela ngawo-1960, kodwa intuthuko enkulu nephelele yaqala ngawo-1980. Njenge-organosiliconi-defoamer, izinkambu zayo zokusetshenziswa nazo zibanzi kakhulu, zidonsa ukunakwa okwengeziwe kuzo zonke izigaba zokuphila. Emkhakheni wamakhemikhali, iphepha, ukugqoka, ukudla, izindwangu, imithi kanye neminye imikhakha yezimboni, i-siliconei-defoameriyisengezo esibalulekile enqubweni yokukhiqiza. Ayikwazi ukususa igwebu kuphela endaweni ewuketshezi yenqubo yokukhiqiza, ngaleyo ndlela ithuthukise ukuhlunga, ukuhlukaniswa, ukufakwa kwegesi, kanye nemiphumela ye-liquid drainage yokugeza, isizinda, i-distillation, ukuhwamuka, ukuphelelwa amanzi emzimbeni, ukomisa nezinye izinqubo zobuchwepheshe ziqinisekisa umthamo wezinto ezahlukahlukene zokugcina kanye neziqukathi zokucubungula.

Izinzuzo zeama-silicone defoamers:
1. Uhlu olubanzi lwezicelo: ngenxa yesakhiwo samakhemikhali esikhethekile samafutha we-silicone, awahambisani namanzi noma izinto eziqukethe amaqembu amhlophe, noma ama-hydrocarbon noma izinto eziphilayo eziqukethe amaqembu e-hydrocarbon. Ngenxa yokungancibiliki kwamafutha e-silicone ezintweni ezihlukahlukene, inezinhlobonhlobo zezicelo. Ingasetshenziselwa ukukhipha amagwebu ezinhlelweni zamanzi kanye nasezinhlelweni zikawoyela.
2. Ukungezwani okuphansi kwendawo: Umthamo wangaphezulu kawoyela we-silicone uvamise ukuba yi-20-21 dyne/cm, mancane kunawamanzi (72 dyne/cm) kanye noketshezi olugcwele amagwebu, futhi inokusebenza okuhle kokukhipha amagwebu.
3. Ukuzinza okuhle kokushisa: Ukuthatha i-simethicone evame ukusetshenziswa njengesibonelo, ingakwazi ukumelana no-150 ° C isikhathi eside no-300 ° C isikhathi esifushane, futhi isibopho sayo se-Si-O ngeke sibole. Lokhu kuqinisekisa ukuthii-silicone defoameringasetshenziswa ebangeni lokushisa elibanzi.
4. Ukuzinza okuhle kwamakhemikhali: Njengoba isibopho se-Si-O sizinzile, ukuzinza kwamakhemikhali kawoyela we-silicone kuphezulu kakhulu, futhi kunzima ukusabela ngamakhemikhali nezinye izinto. Ngakho-ke, inqobo nje uma ukwakheka kunengqondo,ama-silicone defoamersavunyelwe ukuthi asetshenziswe ezinhlelweni eziqukethe ama-asidi, ama-alkali, nosawoti.
5. I-inert Physiologically: Amafutha e-silicone afakazelwe ukuthi awanabo ubuthi kubantu nasezilwaneni, futhi umthamo wawo obulalayo uyingxenye enkulu kuno-34 g/kg. Ngakho-ke,ama-silicone defoamers(ezinama-emulsifiers angenabuthi afanelekile, njll.) angasetshenziswa ngokuphephile ezimbonini zokudla, zezokwelapha, ezemithi nezimonyo.
6. Amandla aqinile okuqeda amagwebu:I-Silicone defoamerayikwazi nje ukuphula ngokuphumelelayo i-foam eyenziwe, kodwa futhi ingavimbela ngokuphawulekayo i-foam futhi ivimbele ukwakheka kwegwebu. Ukusetshenziswa kwayo kuncane kakhulu, inqobo nje uma wengeza ingxenye eyodwa esigidini (1ppm) yesisindo sendawo ekhipha amagwebu, kungaveza umphumela wokuqeda ugwebu. Ububanzi bayo obuvame ukusetshenziswa ngu-1 kuya ku-100 ppm. Akukhona nje kuphela ukuthi izindleko ziphansi, kodwa futhi azingcolisi into ekhishwe amagwebu.

Ububi beama-silicone defoamers:
a. I-Polysiloxane inzima ukuyihlakaza: I-Polysiloxane inzima ukuncibilika emanzini, okuvimbela ukuhlakazeka kwayo ohlelweni lwamanzi. I-ejenti ehlakazayo kumele yengezwe. Uma i-ejenti ehlakazayo ingeziwe, i-emulsion izozinza futhi umphumela we-defoaming uzoshintsha. Kubi, kuyadingeka ukusebenzisa i-emulsifier encane ukwenza umphumela wokuqeda amagwebu ube muhle futhi i-emulsion iqine.
b. I-Silicone iyancibilika kuwoyela, enciphisa umphumela wayo wokukhipha amagwebu ohlelweni lukawoyela.
c. Ukumelana nokushisa okuphezulu kwesikhathi eside kanye nokungazweli kahle kwe-alkali.