Emulsifying imishini
Imishini eyinhloko yemishini yokulungiselela i-emulsion ingumshini we-emulsifying, okuwuhlobo lwemishini yokugcwalisa ukuxuba amafutha namanzi ngokulinganayo.Njengamanje, kunezinhlobo ezintathu eziyinhloko zomshini we-emulsifying: i-emulsifying mixer, i-colloid mill ne-homogenizer.Uhlobo lomshini we-Emulsifying kanye nesakhiwo, ukusebenza kanye nobukhulu bezinhlayiya ze-emulsion (ukuhlakazeka) kanye nekhwalithi ye-emulsion (ukuzinza) kunobudlelwane obukhulu.Ngokuvamile, njengoba manje esetshenziswa kabanzi embonini yezimonyo enyakazayo emulsifier, i-emulsion ekhiqizwa ukuhlakazwa okumpofu.Izinhlayiya zinkulu futhi zimaholoholo, azinzinzi kahle futhi zingcoliswa kalula.Kodwa ukukhiqizwa kwayo kulula, intengo ishibhile, inqobo nje uma unaka isakhiwo esinengqondo somshini, sebenzisa kahle, kodwa futhi ingaveza izidingo zekhwalithi ezihlanganisiwe zezimonyo ezithandwayo.Isigayo se-Colloid ne-homogenizer ziyimishini engcono yokuhlanganisa.Eminyakeni yamuva, imishini emulsifying yenze intuthuko enkulu, njengomshini we-vacuum emulsifying, i-emulsion elungiselelwe ukuhlakazeka nokuzinza kokuhle kakhulu.
Izinga lokushisa
Ukushisa kwe-emulsification kunethonya elikhulu ku-emulsification, kodwa akukho mkhawulo oqinile ekushiseni.Uma uwoyela namanzi kuwuketshezi, kungenziwa emulsified ngokushukumisa ekamelweni lokushisa.Ngokuvamile, izinga lokushisa le-emulsification lincike endaweni yokuncibilika yezinto ezinephuzu eliphezulu lokuncibilika ezigabeni ezimbili, futhi izici ezifana nohlobo lwe-emulsifier nokuncibilika kwesigaba sikawoyela nesigaba samanzi kufanele kucatshangelwe.Ukwengeza, izinga lokushisa lalezi zigaba ezimbili kufanele ligcinwe licishe lifane, ikakhulukazi izingxenye zesigaba se-wax namafutha anephuzu lokuncibilika eliphakeme (ngaphezu kuka-70 ℃), lapho kufakwa i-emulsifying, isigaba samanzi esishisayo akufanele sengezwe, ukuze vimbela i-wax namafutha ukuthi angacwebezeli ngaphambi kwe-emulsification, okuholela emulsion enkulu noma emahhadla futhi engalingani.Ngokuvamile, lapho kufakwa i-emulsifying, izinga lokushisa likawoyela namanzi lingalawulwa phakathi kuka-75 ℃ no-85 ℃.Uma isigaba samafutha sine-wax ephezulu yokuncibilika nezinye izingxenye, izinga lokushisa le-emulsifying lizoba phezulu ngalesi sikhathi.Ngaphezu kwalokho, uma i-viscosity ikhula kakhulu enqubweni ye-emulsification, okuthiwa ugqinsi kakhulu futhi ithinta ukuxuba, izinga lokushisa elithile le-emulsification lingakhuliswa ngokufanele.Uma i-emulsifier esetshenzisiwe inezinga elithile lokushisa lokushintsha kwesigaba, izinga lokushisa le-emulsifying nalo likhethwa kangcono eduze nezinga lokushisa lokushintsha kwesigaba.Ukushisa kwe-Emulsification ngezinye izikhathi nakho kuthinta usayizi wezinhlayiyana ze-emulsion.Uma i-anionic emulsifier yensipho ye-fatty acid isetshenziswa ngokujwayelekile, usayizi wezinhlayiyana ze-emulsion cishe u-1.8-2.0μm lapho izinga lokushisa le-emulsification lilawulwa ku-80℃.Uma usayizi wezinhlayiyana cishe u-6μm lapho i-emulsification yenziwa ku-60 ℃.Umthelela wethempelesha ye-emulsification kusayizi wezinhlayiyana ubuthakathaka uma i-emulsifier engeyona i-ionic isetshenziselwa ukufakwa kwe-emulsification.
Isikhathi emulsifying
Isikhathi se-Emulsification ngokusobala sinomthelela kwikhwalithi ye-emulsion, futhi ukuzimisela kwesikhathi se-emulsifying kuhambisana nenani lesilinganiso sesigaba samanzi sesigaba samafutha, i-viscosity yesigaba ezimbili kanye nokukhiqiza i-viscosity ye-emulsion, uhlobo kanye nomthamo we-emulsifier, i-emulsifying. izinga lokushisa, emulsifying isikhathi bangaki, kwanele ukwenza uhlelo emulsification, ihlobene eduze ukusebenza kahle imishini emulsification, isikhathi Emulsification inganqunywa ngokusho isipiliyoni kanye nokuhlola.I-Emulsification nge-homogenizer (3000 RPM) ithatha imizuzu engu-3-10 kuphela.
Ukuhlanganisa isivinini
Imishini ye-Emulsification inethonya elikhulu ekufakweni kwe-emulsification, enye yazo ithonya lesivinini esinyakazayo ekufakweni kwe-emulsification.Isivinini esimaphakathi esinyakazayo siwukwenza isigaba samafutha kanye nesigaba samanzi sixutshwe ngokugcwele, isivinini esiphansi kakhulu esinyakazayo, ngokusobala asikwazi ukufeza inhloso yokuxuba okugcwele, kodwa isivinini esishukumisayo esikhulu kakhulu, sizoletha ama-bubbles ohlelweni, ukuze sibe yi-three-- uhlelo lwesigaba, futhi wenze i-emulsion ingazinzi.Ngakho-ke, umoya kufanele ugwenywe ekuxubeni, futhi umshini we-vacuum emulsifying unokusebenza okuphezulu kakhulu.
Isikhathi sokuthumela: Oct-19-2021