Kuyini i-Silicone Antifoam

Ama-antifoam e-silicone avame ukwakhiwa yi-silica e-hydrophobised ehlakazeka kahle ngaphakathi koketshezi lwe-silicone. Inhlanganisela ephumayo ibe isiqiniswa ibe yi-emulsion esekelwe emanzini noma e-oyela. Lawa ma-antifoam asebenza kahle kakhulu ngenxa yokungasebenzi kahle kwamakhemikhali, amandla ngisho nasezilinganisweni eziphansi, kanye nekhono lokusabalala phezu kwefilimu ye-foam. Uma kudingeka, angahlanganiswa nezinye izinto eziqinile ze-hydrophobic kanye noketshezi ukuze kuthuthukiswe izakhiwo zazo zokuhlanza.

Ama-silicone antifoam agents avame ukuthandwa. Asebenza ngokuphula ukucindezeleka kobuso kanye nokuphazamisa amabhamuza e-foam, okuholela ekuweni kwawo. Lesi senzo sisiza ekususweni ngokushesha kwe-foam ekhona futhi sisiza nasekuvimbeleni ukwakheka kwe-foam.

Izinzuzo ze-silicone defoamer

• Uhla olubanzi lwezinhlelo zokusebenza

Ngenxa yesakhiwo samakhemikhali esikhethekile samafutha e-silicone, awahambisani namanzi noma izinto eziqukethe amaqembu e-polar, noma nama-hydrocarbon noma izinto eziphilayo eziqukethe amaqembu e-hydrocarbon. Njengoba uwoyela we-silicone ungancibiliki ezintweni eziningi, i-silicone defoamer inezinhlelo eziningi zokusebenza. Ingasetshenziswa hhayi kuphela ezinhlelweni zamanzi zokuhlanza, kodwa futhi nasezinhlelweni zamafutha zokuhlanza.

• Ukucindezeleka okuphansi kobuso

Ukuqina kobuso be-silicone oil ngokuvamile kungama-dynes angu-20-21/cm futhi kuncane kunokuqina kobuso bamanzi (72 dynes/cm) kanye noketshezi olujwayelekile olukhipha amagwebu, okuthuthukisa umphumela wokulawula igwebu.

• Ukuqina okuhle kokushisa

Uma sithatha uwoyela we-dimethyl silicone osetshenziswa njalo njengesibonelo, ukumelana kwawo nokushisa kwesikhathi eside kungafinyelela ku-150°C, kanti ukumelana kwawo nokushisa kwesikhathi esifushane kungafinyelela ku-300°C, okuqinisekisa ukuthi ama-ejenti okususa i-silicone angasetshenziswa ebangeni elibanzi lokushisa.

• Ukuqina okuhle kwamakhemikhali

Uwoyela we-silicone unamandla aphezulu okuqina kwamakhemikhali futhi kunzima ukusabela ngamakhemikhali nezinye izinto. Ngakho-ke, uma nje ukulungiswa kunengqondo, ama-ejenti okususa i-silicone avunyelwe ukusetshenziswa ezinhlelweni eziqukethe ama-acid, ama-alkali, nosawoti.

• Ukungabi namandla okusebenza ngokomzimba

Uwoyela we-silicone ufakazelwe ukuthi awunabo ubuthi kubantu nasezilwaneni. Ngakho-ke, ama-defoamer e-silicone (ane-emulsifiers afanele angenabo ubuthi, njll.) angasetshenziswa ngokuphephile epheshaneni nasephepheni, ekucubungulweni kokudla, kwezokwelapha, kwezemithi kanye nasezinhlelweni zezimboni.

• Ukwehlisa isithunzi okunamandla

Ama-defoamer e-silicone awakwazi nje kuphela ukuphula i-foam engafuneki ekhona, kodwa futhi avimbela kakhulu i-foam futhi avimbele ukwakheka kwe-foam. Umthamo mncane kakhulu, futhi ingxenye eyodwa kuphela yesigidi (1 ppm noma 1 g/m3) yesisindo sendawo ekhipha amagwebu ingangezwa ukuze kukhiqizwe umphumela wokukhipha amagwebu. Ububanzi bayo obuvamile buyi-1 kuya ku-100 ppm. Akukhona nje ukuthi izindleko ziphansi, kodwa ngeke zingcolise izinto ezikhishwa amagwebu.

Ama-antifoam e-silicone ayaziswa ngenxa yokuqina kwawo, ukuhambisana nezinto ezahlukahlukene, kanye nokusebenza kahle ekugxilweni okuphansi. Kodwa-ke, kubalulekile ukuqinisekisa ukuthi ahambisana nezindinganiso zomthetho futhi afanele ukusetshenziswa okuthile ukuze kugwenywe noma yimiphi imiphumela emibi kwikhwalithi yomkhiqizo noma endaweni ezungezile.