I. I-Oli yeNdalo (oko kukuthi i-Oli yeembotyi zeSoya, i-Oli yombona, njl.njl.)
II. Utywala beCarbon ephezulu
III. Polyether Antifoamers
IV. Polyether Modified Silicone
...iSahluko esidlulileyo ngeenkcukacha.
V. Organic Silicon Antifoamer
I-Polydimethylsiloxane, eyaziwa ngokuba yioli ye-silicone, iyona nto iphambili ye-silicone defoamer. Xa kuthelekiswa namanzi kunye ne-oyile eqhelekileyo, ukunyanzeliswa komphezulu wayo kuncinci, okufanelekileyo kuzo zombini inkqubo yogwebu olusekelwe kumanzi kunye nenkqubo ye-oyile ye-foam. Ioli ye-Silicone inomsebenzi ophezulu, i-solubility ephantsi, iipropati zekhemikhali ezizinzile, uluhlu lwesicelo esilula, ukuguquguquka okuphantsi, okungeyona ityhefu, kunye nokukwazi ukukhupha amagwebu. Ukungalungi kukusebenza kakubi kwe-foam inhibition.
1. I-Antifoamer eqinile
I-Antifoamer eqinile ineempawu zokuzinza okulungileyo, inkqubo elula, ukuthutha okulula kunye nokusetyenziswa okulula. Ifanelekile kwisigaba se-oyile kunye nesigaba samanzi, kwaye uhlobo oluphakathi lwe-dispersion luvelele. Isetyenziswa kakhulu kwintsimi ye-foam ephantsi okanye engekho umgubo wokuhlamba ugwebu.
2. I-Emulsion Antifoamer
Ioli ye-silicone kwi-emulsion defoamer inoxinzelelo olukhulu, kwaye i-emulsification coefficient inkulu kakhulu. Nje ukuba i-emulsifier ikhethwe ngokungafanelekanga, iya kubangela ukuba i-arhente yokukhupha amagwebu ibekwe kunye ne-metamorphic ngexesha elifutshane. Ukuzinza kwe-emulsion kubaluleke kakhulu kumgangatho we-ejenti yokukhupha amagwebu. Ngoko ke, ukulungiswa kohlobo lwe-emulsion ye-silicone defoamer igxile ekukhethweni kwe-emulsifier. Kwangaxeshanye, i-emulsion defoamer inomthamo omkhulu we-silicone defoamer eneempawu zexabiso eliphantsi, ububanzi besicelo, isiphumo esicacileyo sokwenza amagwebu, njalo njalo. Ngenkqubela phambili yeteknoloji yokuqulunqa, i-emulsion defoamer iya kuphuhlisa kakhulu.
3. Isisombululo seAntifoamer
Isisombululo esenziwe ngokuchithwa kweoli ye-silicone kwi-solvent. Umgaqo wayo wokuhlamba ugwebu kukuba iinqununu zeoli ye-silicone zithwalwa yi-solvent kwaye zihlakazwe kwisisombululo esinamagwebu. Kule nkqubo, i-oyile ye-silicone iya kuthi ngokuthe ngcembe ijiyane ibe ngamathontsi ukuze igqibe ukukhupha amagwebu. Ioli yeSilicone inyibilikiswe kwi-non-aqueous organic solution solution, njenge-polychloroethane, toluene, njl., ingasetyenziswa njengesisombululo se-oyile defoaming.
4. I-Antifoamer yeoli
Inxalenye ephambili ye-oil defoamer yioli ye-silicone ye-dimethyl. Ioli ye-silicone ecocekileyo ye-dimethyl ayinayo i-defoaming effect kwaye kufuneka ifakwe emulsified. Ukunyanzeliswa komphezulu we-silicone emulsified kuncipha ngokukhawuleza, kwaye isixa esincinci sinokufikelela ekuqhekekeni okunamandla kunye nokuvinjwa kwe-foam. Xa ioli ye-silicone ixutywe kunye nenxalenye ethile yabancedisi be-silica ephathwa nge-hydrophobically, i-oil compound defoamer inokuqulunqwa. I-silicon dioxide isetyenziselwa ukuzalisa, kuba inani elikhulu lamaqela e-hydroxyl kumphezulu walo linokunyusa amandla okusasazwa kweoli ye-silicone kwi-foaming system, yandisa ukuzinza kwe-emulsion, kwaye ngokucacileyo iphucula ipropathi ye-defoamer ye-silicone defoamer.
Ngenxa yokuba ioli ye-silicone i-lipophilic, i-silicone defoamer inefuthe elihle kakhulu lokukhupha i-oil-soluble. Nangona kunjalo, ezi ngongoma kufuneka zinikwe ingqalelo xa usebenzisa i-silicone defoamer:
● I-viscosity ephantsi ye-silicone i-defoamer ine-defoamer enhle, kodwa ukuzingisa kwayo kubi; I-silicone ye-viscosity ephezulu ye-viscosity defoamer inesiphumo esicothayo sokwenza amagwebu kodwa ukuzingisa okuhle.
● Ukuba i-viscosity yesisombululo sogwebu iphantsi, kungcono ukhethe i-silicone defoamer ene-viscosity ephezulu. Ngokuchasene noko, ukuphakama kwe-viscosity yesisombululo sogwebu, kungcono ukhethe i-silicone defoamer ene-viscosity ephantsi.
● Ubunzima be-molecular of oily silicone defoamer bunempembelelo ethile kwi-defoaming effect yayo.
● I-defoamer enobunzima obuphantsi be-molecular kulula ukusabalalisa kunye nokuchithwa, kodwa ukungabikho kokuzingisa. Ngokuchasene noko, ukusebenza kwe-defoamer ephezulu ye-molecular weight defoamer kunzima, kwaye i-emulsification inzima, kodwa ukunyibilika akubi kwaye ukuqina kulungile.
Ixesha lokuposa: Nov-19-2021