Kodi Silicone Antifoam ndi chiyani

Ma antifoam a silicone nthawi zambiri amapangidwa ndi silica ya hydrophobized yomwe imamwazika bwino mkati mwamadzimadzi a silicone. The chifukwa pawiri ndiye okhazikika mu madzi ofotokoza kapena mafuta ofotokoza emulsion. Ma antifoam awa ndi othandiza kwambiri chifukwa cha kusakwanira kwawo kwamankhwala, potency ngakhale m'malo otsika, komanso kufalikira pafilimu ya thovu. Ngati pakufunika, amatha kuphatikizidwa ndi zolimba zina za hydrophobic ndi zamadzimadzi kuti apititse patsogolo zinthu zofooketsa.

Mankhwala a silicone antifoam nthawi zambiri amakonda. Amagwira ntchito pothetsa kusamvana kwapamtunda ndi kusokoneza thovu la thovu, zomwe zimatsogolera kugwa. Izi zimathandizira kuti chithovu chichotsedwe mwachangu komanso chimathandizira kuti chithovu chisapangike.

Ubwino wa silicone defoamer

• osiyanasiyana ntchito

Chifukwa cha kapangidwe kake kapadera ka 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. Popeza mafuta a silicone sasungunuka muzinthu zambiri, silicone defoamer imakhala ndi ntchito zambiri. Itha kugwiritsidwa ntchito osati pamayendedwe amadzi odetsa thovu, komanso machitidwe amafuta otsitsa.

• Kuthamanga kwapansi pamtunda

Kuchulukana kwamafuta a silikoni nthawi zambiri kumakhala 20-21 dynes/cm ndipo ndi kocheperako kuposa kugwedezeka kwamadzi (72 dynes/cm) ndi zakumwa zotulutsa thovu, zomwe zimapangitsa kuti chithovu chiziwongolera.

• Kukhazikika kwamafuta abwino

Kutengera mafuta a silicone omwe amagwiritsidwa ntchito kwambiri monga mwachitsanzo, kukana kwake kutentha kwa nthawi yayitali kumatha kufika 150 ° C, ndipo kukana kwake kwanthawi yayitali kumatha kufika pa 300 ° C, kuwonetsetsa kuti ma silicone defoaming agents angagwiritsidwe ntchito pa kutentha kwakukulu.

• Kukhazikika kwamankhwala kwabwino

Mafuta a silicone ali ndi kukhazikika kwa mankhwala ndipo ndizovuta kuchitapo kanthu ndi zinthu zina. Choncho, malinga ngati kukonzekera kuli koyenera, ma silicone defoaming agents amaloledwa kugwiritsidwa ntchito mu machitidwe omwe ali ndi zidulo, alkali, ndi mchere.

• Inertia ya thupi

Mafuta a silicone atsimikiziridwa kuti alibe poizoni kwa anthu ndi nyama. Chifukwa chake, ma silicone defoamers (omwe ali ndi ma emulsifiers oyenerera opanda poizoni, ndi zina zotero) angagwiritsidwe ntchito mosamala muzamkati ndi pamapepala, kukonza chakudya, ntchito zamankhwala, zamankhwala ndi zodzikongoletsera.

• Kuchotsa thovu mwamphamvu

Silicone defoamers sangathe bwino kuswa chithovu alipo, komanso kwambiri ziletsa thovu ndi kupewa mapangidwe thovu. Mlingowo ndi wochepa kwambiri, ndipo gawo limodzi lokha la milioni (1 ppm kapena 1 g/m3) la kulemera kwa sing'anga yotulutsa thovu likhoza kuwonjezeredwa kuti lisawonongeke. Mitundu yake yodziwika bwino ndi 1 mpaka 100 ppm. Sikuti mtengo wake ndi wotsika, komanso sudzaipitsa zinthu zomwe zikuipitsidwa.

Ma antifoam a silicone ndi amtengo wapatali chifukwa cha kukhazikika kwawo, kugwirizana ndi zinthu zosiyanasiyana, komanso kugwira ntchito mopanda malire. Komabe, ndikofunikira kuwonetsetsa kuti zikugwirizana ndi zowongolera ndipo ndizoyenera kugwiritsa ntchito kuti zipewe zovuta zilizonse pamtundu wazinthu kapena chilengedwe.