Tsiku Lotumiza:17,JAN,2022

Siliconedefoamerndi white viscous emulsion. Zakhala zikugwiritsidwa ntchito m'mafakitale osiyanasiyana kuyambira m'ma 1960, koma chitukuko chachikulu komanso chokwanira chinayamba m'ma 1980. Monga organosilicondefoamer, minda yake yogwiritsira ntchito ndi yotakata kwambiri, yomwe imakopa chidwi chowonjezereka kuchokera kumagulu onse a moyo. M'magawo a mankhwala, mapepala, zokutira, chakudya, nsalu, mankhwala ndi mafakitale ena, silikonidefoamerndi chowonjezera chofunikira pakupanga. Iwo sangakhoze kokha kuchotsa thovu pa madzi pamwamba pa ndondomeko sing'anga mu kupanga, potero kusintha kusefera, The kulekana, gasification, ndi madzi ngalande zotsatira kutsuka, m'zigawo, distillation, evaporation, kuchepa madzi m'thupi, kuyanika ndi njira zina zamakono kuonetsetsa mphamvu zosiyanasiyana zosungiramo zinthu ndi kukonza muli.

Ubwino wasilicone defoams:
1. Ntchito zambiri: chifukwa cha mankhwala apadera a mafuta a silikoni, sagwirizana ndi madzi kapena zinthu zomwe zili ndi magulu a polar, kapena ma hydrocarbon kapena zinthu zamoyo zomwe zili ndi magulu a hydrocarbon. Chifukwa cha insolubility mafuta silikoni ku zinthu zosiyanasiyana, ali osiyanasiyana ntchito. Itha kugwiritsidwa ntchito pochotsa thovu pamakina amadzi komanso m'makina amafuta.
2. Kuthamanga kwapansi pamtunda: Kuchuluka kwa mafuta a silikoni nthawi zambiri ndi 20-21 dyne / masentimita, omwe ndi ang'onoang'ono kusiyana ndi madzi (72 dyne / cm) ndi zakumwa zotulutsa thovu, ndipo amachita bwino pochotsa thovu.
3. Kukhazikika kwabwino kwa kutentha: Kutenga simethicone yomwe imagwiritsidwa ntchito kawirikawiri mwachitsanzo, imatha kupirira 150 ° C kwa nthawi yaitali ndi 300 ° C kwa nthawi yochepa, ndipo mgwirizano wake wa Si-O sudzawonongeka. Izi zikutanthauza kutisilicone defoamerangagwiritsidwe ntchito osiyanasiyana kutentha.
4. Kukhazikika kwabwino kwa mankhwala: Popeza mgwirizano wa Si-O ndi wokhazikika, kukhazikika kwa mankhwala a mafuta a silicone ndi apamwamba kwambiri, ndipo n'zovuta kuchitapo kanthu ndi zinthu zina. Chifukwa chake, malinga ngati kupangidwako kuli koyenera,silicone defoamsAmaloledwa kugwiritsidwa ntchito m'machitidwe okhala ndi ma acid, alkalis, ndi mchere.
5. Physiologically inert: Mafuta a silicone atsimikiziridwa kuti alibe poizoni kwa anthu ndi nyama, ndipo mlingo wake wakupha theka ndi waukulu kuposa 34 g / kg. Chifukwa chake,silicone defoams(okhala ndi ma emulsifiers oyenera omwe alibe poizoni, ndi zina zotero) angagwiritsidwe ntchito mosamala m'mafakitale azakudya, azachipatala, azamankhwala ndi zodzikongoletsera.
6. Mphamvu yamphamvu yochotsera thovu:Silicone defoamersangathe bwino kuswa chithovu kuti wakhala kwaiye, komanso akhoza kwambiri ziletsa chithovu ndi kuteteza mapangidwe thovu. Kugwiritsa ntchito kwake ndikochepa kwambiri, bola ngati kuwonjezera gawo limodzi pa miliyoni (1ppm) ya kulemera kwa sing'anga yotulutsa thovu, kumatha kutulutsa mpweya. Mitundu yake yomwe imagwiritsidwa ntchito kwambiri ndi 1 mpaka 100 ppm. Sikuti mtengo wake ndi wotsika, komanso suipitsa zinthu zomwe zawonongeka.

Kuipa kwasilicone defoams:
a. Polysiloxane ndizovuta kumwazikana: Polysiloxane ndizovuta kusungunuka m'madzi, zomwe zimalepheretsa kufalikira kwake m'madzi. Wobalalitsa ayenera kuwonjezeredwa. Ngati wobalalitsa awonjezeredwa, emulsion idzakhala yokhazikika ndipo zotsatira zowonongeka zidzasintha. Osauka, m'pofunika kugwiritsa ntchito emulsifier pang'ono kuti defoaming zotsatira zabwino ndi emulsion khola.
b. Silicone ndi yosungunuka m'mafuta, zomwe zimachepetsa kuwonongeka kwake mumafuta.
c. Kukana kutentha kwakukulu kwa nthawi yayitali komanso kusagwirizana kwa alkali.