Oxidation is the number one cause of heat transfer fluid breakdown in open baths. it occurs when the hot fluid isexposed to the surrounding air. This unavoidable exposure to the atmosphere will result in the formation of sludgewithin the bath itself or gelling of the fluid. The hotter the bath's operating temperature, the faster and more severethis reaction will be, Veru few fuids will hold up under these extreme conditions for more than a few daus, however ,It has specially developed for this working condition.
UOLEN150H is a clear, colorless, and odorless polydimethylsiloxane with a high proportion of phenyl groups.It can be used in the range from 25℃（77℉）to 250°C（482℉）(for open systems) and to 350°C（662℉） in externally sealed systems. For practical purposes, the useful temperature range of UOLEN150H is between 25°C and 350°C. However, this presupposes that heat-stressing of the fluid occurs under “chemically pure” conditions.Even trace amounts of acids, alkalis, mineral oils, organometallic compounds, metal salts or metal oxides can seriously reduce the service life. The flash point of the silicone fluid may be changed by heat-stressing. it is therefore particularly important in open systemsto check the flash point at least once a year and more often if operating conditions demand.
