I. Mafuta Achilengedwe (ie Mafuta a Soya, Mafuta a Chimanga, ndi zina zotero)
II. Mowa Wapamwamba wa Carbon
III. Ma Antifoam a Polyether
IV. Polyether Modified Silicone
...Mutu wapitawu kuti mudziwe zambiri.
V. Organic Silicon Antifoamer
Polydimethylsiloxane, yomwe imadziwikanso kuti mafuta a silicone, ndiye chigawo chachikulu cha silicone defoamer. Poyerekeza ndi madzi ndi mafuta wamba, kugwedezeka kwake pamtunda kumakhala kochepa, komwe kuli koyenera kuti pakhale madzi opangira thovu ndi makina opangira thovu. Mafuta a silicone ali ndi ntchito zambiri, kusungunuka kochepa, kukhazikika kwa mankhwala, mitundu yogwiritsira ntchito kuwala, kutsika kochepa, kusakhala ndi poizoni, komanso kutulutsa mphamvu zodziwika bwino. Choyipa chake ndi kusachita bwino kwa thovu.
1. Antifoamer Yolimba
Solid Antifoamer ili ndi mawonekedwe okhazikika bwino, njira yosavuta, mayendedwe osavuta komanso yosavuta kugwiritsa ntchito. Ndiwoyenera kugawo lamafuta ndi gawo lamadzi, ndipo mtundu wapakati wobalalika umakhalanso wotchuka. Amagwiritsidwa ntchito kwambiri m'munda wa thovu lotsika kapena lopanda thovu kutsuka ufa.
2. Emulsion Antifoamer
Mafuta a silicone mu emulsion defoamer amakhala ndi zovuta kwambiri, ndipo emulsification coefficient ndi yayikulu kwambiri. Emulsifier ikasankhidwa molakwika, ipangitsa kuti wochotsa thovu apangidwe ndi metamorphic kwakanthawi kochepa. Kukhazikika kwa emulsion ndikofunikira kwambiri pamtundu wa defoaming wothandizira. Choncho, kukonzekera emulsion mtundu silikoni defoamer imayang'ana pa kusankha emulsifier. Pa nthawi yomweyo, emulsion defoamer ali waukulu mlingo silikoni defoamer ndi makhalidwe a mtengo wotsika, lonse ntchito kukula, zoonekeratu defoaming zotsatira, ndi zina zotero. Ndi kupita patsogolo kwaukadaulo wopanga, emulsion defoamer idzakula kwambiri.
3. Njira Antifoamer
Ndi yankho lopangidwa ndi kusungunula mafuta a silicone mu zosungunulira. Mfundo yake yochotsera thovu ndikuti zida zamafuta za silikoni zimanyamulidwa ndi zosungunulira ndikumwazika munjira yotulutsa thovu. Pochita izi, mafuta a silikoni amakhazikika pang'onopang'ono kukhala madontho kuti amalize kutulutsa thovu. Silicone mafuta kusungunuka mu sanali amadzimadzi organic njira yothetsera, monga polychloroethane, toluene, etc., angagwiritsidwe ntchito ngati mafuta njira defoaming.
4. Mafuta a Antifoamer
Chigawo chachikulu cha mafuta defoamer ndi dimethyl silikoni mafuta. Mafuta oyera a silikoni a dimethyl alibe zotsatira zowononga ndipo amafunika kupangidwa ndi emulsified. Kuthamanga kwapamwamba kwa silicone emulsified kumachepetsa mofulumira, ndipo pang'ono pang'ono kungathe kukwaniritsa kusweka kwa thovu ndi kulepheretsa. Mafuta a silikoni akasakanizidwa ndi gawo lina la othandizira silika opangidwa ndi hydrophobically, defoamer yamafuta imatha kupangidwa. Silicon dioxide ntchito monga filler, chifukwa kuchuluka kwa magulu hydroxyl pamwamba pake kumapangitsanso dispersing mphamvu ya silikoni mafuta mu thovu dongosolo, kuonjezera bata la emulsion, ndipo mwachionekere kusintha defoaming katundu silikoni defoamer.
Chifukwa mafuta a silikoni ndi lipophilic, silikoni defoamer ali ndi zotsatira zabwino kwambiri defoaming pa mafuta sungunuka sungunuka. Komabe, mfundozi ziyenera kutsatiridwa mukamagwiritsa ntchito silicone defoamer:
● Low viscosity silikoni defoamer ndi zabwino defoaming zotsatira, koma kulimbikira kwake ndi osauka; High viscosity silicone defoamer imakhala ndi zotsatira zochepetsera pang'onopang'ono koma kulimbikira kwabwino.
● Ngati kukhuthala kwa njira yotulutsa thobvu ndi yotsika, ndi bwino kusankha silicone defoamer yokhala ndi mamasukidwe apamwamba. M'malo mwake, kukhathamiritsa kwamphamvu kwa yankho la thovu ndikwabwino kusankha silicone defoamer yokhala ndi mamasukidwe otsika.
● Kulemera kwa molekyulu ya silicone defoamer yamafuta kumakhudza kwambiri momwe amachitira.
● Defoamer yokhala ndi mamolekyu ochepa kulemera ndi yosavuta kumwazikana ndi kupasuka, koma kusowa kulimbikira. M'malo mwake, ntchito yochotsa thovu ya defoamer yolemetsa kwambiri ndi yoyipa, ndipo emulsification ndiyovuta, koma kusungunuka kwake ndi koyipa komanso kulimba kwake ndikwabwino.
Nthawi yotumiza: Nov-19-2021