I-iron oxides Ukusetyenziswa kwiiNgqungquthela ezinobushushu obuphezulu

Iioksidi zentsimbi ezimthubi ezisemgangathweni zezona pigments ezifanelekileyo zokuphuhlisa uluhlu olubanzi umbala i-shades ngenxa yeenzuzo ekusebenzeni kunye neendleko ezibonelelwa ngamandla abo aphezulu okufihla kunye nokungabonakali, imozulu egqwesileyo, ukukhanya kunye nokukhawuleza kweekhemikhali, kunye nexabiso elincitshisiweyo. Kodwa ukusetyenziswa kwabo kwiingubo ezinobushushu obuphezulu obunje ngokutyabeka, Ipeyinti okanye iipeyinti zesitovu zilinganiselwe. Ngoba?

Xa ii-oxide zentsimbi ezityheli zingeniswa kumaqondo obushushu aphezulu, ulwakhiwo lwabo lwe-goethite (FeOOH) ludiza amanzi kwaye ngokuyinxenye lujike lube yi-hematite (Fe2O3), okuyisakhiwo sekristale se-iron oxide ebomvu. Yiyo loo nto umgangatho we iron oxide ekhoyo phambi kokuba unyange ube mnyama kwaye ubemdaka .

Olu tshintsho lunokwenzeka ukusuka kumaqondo obushushu asondele kwi-160ºC, ngokuxhomekeke kwixesha lokunyanga, inkqubo yokubopha kunye nokwakheka kwengubo ngokwayo.