Mbadwo wachitatu wa defoamer ndi silicone defoamer yochokera ku polydimethylsiloxane (PDMS, dimethyl silicone oil). Pakadali pano, kafukufuku ndi kugwiritsa ntchito kwa mbadwo uwu wa defoamer makamaka ku China. PDMS imapangidwa ndi unyolo wa okosijeni wa silicon ndi magulu ena achilengedwe, ndipo sangaikidwe bwino pa filimu yamadzimadzi a thovu, kotero kuti thovulo liphulike. PDMS yotsika kwambiri ili ndi mphamvu yabwino yochotsera mafoam ndipo PDMS yotsika kwambiri ili ndi mphamvu yabwino yochotsera mafoam.
Ubwino wa silicone defoamer
Ili ndi mankhwala osagwira ntchito bwino ndipo ndi yovuta kuyanjana ndi zinthu zina. Ingagwiritsidwe ntchito mu njira za asidi, alkali ndi mchere.
Ndi yopanda mphamvu ya thupi, ingagwiritsidwe ntchito m'mafakitale azakudya ndi mankhwala, ndipo siiwononga chilengedwe.
Ili ndi kukhazikika kwabwino kwa kutentha komanso kusasinthasintha kochepa, ndipo ingagwiritsidwe ntchito pa kutentha kwakukulu.
Kukhuthala kwake kumakhala kochepa ndipo kumafalikira mofulumira pamalo olumikizirana ndi gasi ndi madzi.
Kuthamanga kwa pamwamba pa madzi ndi kotsika kufika pa 1.5-20 Mn / M (76 Mn / m2).
Sikophweka kusungunuka ndi surfactant mu dongosolo la thovu.
Mlingo wochepa, kukhuthala kochepa komanso kukana kuyaka kwambiri.
Zoyipa za silicone defoamer
1. N'zovuta kufalikira m'madzi.
2. Popeza imasungunuka mu mafuta, mphamvu yochotsera poizoni m'mafuta imachepa.
3. Kukana kutentha kwambiri.
4. Kusalimba kwa alkalinity yamphamvu.
Mtengo wokwera:PDMS ndi emulsion yamadzi mu mafuta (O/W) yopangidwa ndi mafuta a silicone, emulsifier, thickener, ndi zina zotero, yomwe imapangidwa ndi madzi. Kupsinjika kwa pamwamba kumachepa mofulumira ndipo kumakhala ndi mphamvu zotsutsana ndi thovu komanso zotsutsana ndi thovu. Imagawidwa m'magulu atatu: mafuta a silicone, mafuta a silicone + polyether yosinthidwa ndi mafuta a polyether yosinthidwa.
Imadziwika ndi:Kuchepa kwa mphamvu ya pamwamba, kugwira ntchito kwambiri pamwamba komanso mphamvu yamphamvu yochotsera poizoni.
Mlingo wochepa:Imatha kuletsa ndikuswa thovu la zinthu zambiri zoyatsira thovu.Ili ndi kutentha kokhazikika bwino ndipo ingagwiritsidwe ntchito pa kutentha kosiyanasiyana.Imagawidwa ndi polyether ndipo imakhala ndi mphamvu yogwirizana.Amagwiritsidwa ntchito kwambiri pochotsa fumbi m'mafakitale monga sopo, mapepala, zamkati, kupanga shuga, electroplating, feteleza, zowonjezera, kukonza madzi otayidwa ndi njira zina zopangira. Mumakampani opanga mafuta, amagwiritsidwa ntchito kwambiri pochotsa fumbi m'mafuta achilengedwe kuti afulumizitse kulekanitsa mafuta ndi mpweya; Amagwiritsidwanso ntchito kulamulira kapena kuletsa thovu m'zida monga kuuma kwa ethylene glycol, kuchotsa mafuta onunkhira, kukonza phula ndi kudzola mafuta. Mumakampani opanga nsalu, amagwiritsidwa ntchito pochotsa fumbi m'kudaya, kupukuta, kukula ndi njira zina; Amagwiritsidwa ntchito potulutsa fumbi m'mafakitale; Amagwiritsidwa ntchito pochotsa fumbi m'njira zosiyanasiyana, kuwiritsa ndi kusungunuka m'mafakitale azakudya.
Nthawi yotumizira: Meyi-05-2022