Umthelela we-ejenti emelana namanzi ezimpahleni zokumboza nephepha elinamekwe

Ngokuthuthuka okusheshayo kwemboni yephepha, ikakhulukazi iphepha elinamaphepha liye lathuthukiswa ngokushesha, imboni yokunyathelisa ngezidingo zekhwalithi yamaphepha aya ngokuya ngokuya phezulu. Ukuze kuqinisekiswe ikhwalithi yokunyathelisa, ingaphezulu lephepha eliboshwe kufanele libe nekhono lokumelana nokungqubuzana okumanzi. Ukumelana nokungqubuzana okumanzi kubhekisela ezingeni lomonakalo ebusweni bephepha ngemva kokuba indawo ethile yephepha nekhadibhodi ingaphansi kokungqubuzana okumanzi ngaphansi kwengcindezi ethile, okubonisa ikhono lendawo yephepha ukuthi lingabhujiswa ukungqubuzana okumanzi.

Futhi ephepheni elimbozwe amanzi elinezidingo ezikhethekile, ukuze lilenze lithole amandla okumelana namanzi nokungangeni kwamanzi, enqubweni yokukhiqiza iphepha, ngaphezu kwenqubo yokulinganisa ku-ejenti yokulinganisa kanye ne-ejenti yokulinganisa indawo, umphumela osheshayo uwukwengeza izithasiselo zokumelana namanzi enqubweni yokulungiselela ukumboza, ukuze ungqimba olunamathelayo luthole ukusebenza okuhle kokuxosha amanzi.

Ngesikhathi esifanayo, ngokusekelwe ekucatshangelweni kokuphepha nokuvikelwa kwemvelo, izidingo zekhwalithi zikazwelonke zephepha lokugoqa ukudla kanye nephepha lasendlini ziya ngokuya ziba nzima, futhi manje ukusetshenziswa kwe-polyamide polyurea formaldehyde resin (PAPU) yokuxosha amanzi. I-PAPU isetshenziswa kabanzi, ngoba ayinayo i-formaldehyde yamahhala, futhi iyashesha, isebenza lapho iphuma emshinini, futhi ingathuthukisa ngokuphumelelayo ukuguquguquka kwephepha elihlanganisiwe ekunyatheliseni.

I-PAPU inohlelo oluqinile lwe-pH value, futhi i-viscosity ye-PAPU engezwe kupende izinzile futhi isivinini sokuphulukisa siyashesha. I-PAPU iketango lamangqamuzana liqukethe iqembu le-chloroethanol kanye neqembu le-polyamine amaqembu amabili asebenzayo asebenzayo, lapho iqembu le-chloroethanol ne-adhesive kapende likhiqiza isibopho sokubopha amakhemikhali, iqembu le-polyamine kanye nenhlanganisela yokunamathisela ngopende ukuze kwakhiwe isibopho se-ionic, ukuphulukiswa okuxhumene nokwakha inethiwekhi yokuphulukisa ifilimu, okuwumthombo oyinhloko we-PAPU ukumelana namanzi, kodwa futhi njengesimiso esisebenza ukumelana namanzi.

Ekusetshenzisweni kwangempela, i-PAPU ayikwazi nje ukwakha izibopho zamakhemikhali ngesitashi esiboshwe, kodwa futhi yakha izibopho ze-ionic nge-styrene butadiene latex, futhi ukumelana nokungqubuzana okumanzi kwe-coating kuyanda. Ukwengeza, izakhiwo ezibuthakathaka ze-cationic ze-agent ye-PAPU engamelana namanzi nazo zingakhiqiza i-micro-flocculation ne-anions ekugqokeni, zithuthukise ukukhukhumeza, i-porosity kanye nokungena kwesendlalelo sokugqoka, futhi kuthuthukise ukusebenza kokuphrinta kwephepha eliqediwe.

Impahla ye-Rheological iyinkomba ebalulekile yopende, i-agent ye-PAPU engamelana namanzi ingakhuphula i-viscosity kapende, yengeze uhlobo lwe-PAPU i-agent engamelana namanzi ngemva kokuba inani lokulahlekelwa kwamanzi likapende lincishisiwe, ukugcinwa kwamanzi kungcono. I-ejenti yokumelana namanzi yohlobo lwe-PAPU ifaneleka ekulungiseni upende we-viscosity ephezulu, futhi ukusebenza kopende kokugcinwa kwamanzi kungcono.