Yintoni iSilicone Antifoam

Ii-antifoam ze-silicone zihlala zenziwe nge-silica e-hydrophobic esasazwa kakuhle ngaphakathi kolwelo lwe-silicone. I-compound ephumayo emva koko iqiniswa ibe yi-emulsion esekwe emanzini okanye kwi-oyile. Ezi antifoam zisebenza kakhulu ngenxa yokungasebenzi kakuhle kweekhemikhali, amandla nokuba ziphantsi, kunye nokukwazi ukusasazeka kwifilimu ye-foam. Ukuba kuyimfuneko, zinokudityaniswa nezinye izinto eziqinileyo ze-hydrophobic kunye nolwelo ukuphucula iipropati zazo zokuxovula.

Iiarhente ze-silicone antifoam zihlala zikhethwa. Zisebenza ngokuphula uxinzelelo lomphezulu kunye nokuphazamisa amaqamza e-foam, nto leyo ekhokelela ekuweni kwawo. Esi senzo sinceda ekupheliseni ngokukhawuleza i-foam ekhoyo kwaye sikwanceda ekuthinteleni ukwakheka kwe-foam.

Iingenelo ze-silicone defoamer

• Uluhlu olubanzi lwezicelo

Ngenxa yesakhiwo esikhethekileyo seekhemikhali seoyile ye-silicone, ayihambelani namanzi okanye izinto ezinamaqela e-polar, okanye nee-hydrocarbons okanye izinto eziphilayo ezinamaqela e-hydrocarbon. Ekubeni ioyile ye-silicone inganyibiliki kwizinto ezininzi, i-silicone defoamer ineendlela ezahlukeneyo zokusebenza. Ingasetyenziswa kungekuphela nje kwiinkqubo zamanzi zokuxovula, kodwa nakwiinkqubo zeoyile zokuxovula.

• Uxinzelelo oluphantsi lomphezulu

Uxinzelelo lomphezulu weoyile ye-silicone ngokubanzi luyi-20-21 dynes/cm kwaye luncinci kunoxinzelelo lomphezulu wamanzi (72 dynes/cm) kunye nolwelo oluvela kwi-foam ngokubanzi, nto leyo ephucula impembelelo yolawulo lwe-foam.

• Uzinzo oluhle lobushushu

Xa sijonga ioyile ye-dimethyl silicone esetyenziswa rhoqo njengomzekelo, ukumelana kwayo nobushushu bexesha elide kunokufikelela kwi-150°C, kwaye ukumelana kwayo nobushushu bexesha elifutshane kunokufikelela kwi-300°C, okuqinisekisa ukuba iiarhente zokufunxa i-silicone zingasetyenziswa kumanqanaba obushushu abanzi.

• Uzinzo oluhle lweekhemikhali

Ioyile ye-silicone inamandla aphezulu eekhemikhali kwaye kunzima ukuyiphendula ngokweekhemikhali nezinye izinto. Ke ngoko, lo gama nje ukulungiswa kusengqiqweni, ii-arhente zokucola i-silicone zivumelekile ukuba zisetyenziswe kwiinkqubo eziqulethe ii-asidi, ii-alkalis kunye neetyuwa.

• Ukungasebenzi kakuhle kwemizimba

Ioyile ye-silicone ibonakalisiwe ukuba ayinabungozi ebantwini nakwizilwanyana. Ke ngoko, ii-silicone defoamers (ezine-emulsifiers ezifanelekileyo ezingenabungozi, njl.njl.) zingasetyenziswa ngokukhuselekileyo kwi-pulp nephepha, ekulungisweni kokutya, kwezonyango, kumayeza nakwimisebenzi yemizi-mveliso yobuhle.

• Ukunciphisa isidima ngamandla

Ii-silicone defoamers azikwazi nje kuphela ukuphula i-foam engafunekiyo ekhoyo, kodwa zikwathintela kakhulu i-foam kwaye zithintele ukwakheka kwe-foam. Umthamo umncinci kakhulu, kwaye kuphela isigidi esinye (1 ppm okanye 1 g/m3) sobunzima besixhobo sokufutha esinokongezwa ukuvelisa isiphumo sokufutha. Uluhlu lwazo oluqhelekileyo yi-1 ukuya kwi-100 ppm. Ixabiso alikho nje kuphela, kodwa aliyi kungcolisa izinto ezifuthayo.

Ii-antifoam ze-silicone zixatyiswa ngenxa yozinzo lwazo, ukuhambelana kwazo nezinto ezahlukeneyo, kunye nokusebenza kakuhle kwiindawo eziphantsi. Nangona kunjalo, kubalulekile ukuqinisekisa ukuba ziyahambelana nemigangatho yolawulo kwaye zifanelekile kwisicelo esithile ukuze kuthintelwe naziphi na iziphumo ezimbi kumgangatho wemveliso okanye okusingqongileyo.