| 摘要 |
<p>An irreversible temperature indicating paint comprises 29wt% to 37wt% cobalt aluminium spinel and glass, 35wt% to 45wt% acrylic resin and 20wt% to 30wt% silicone resin excluding solvent. The solvent comprises a mixture of 80% 1-methoxy-2-propanol and 20% dipropylene glycol monomethyl ether. A particular irreversible temperature indicating paint comprises 34.9wt% cobalt aluminium spinel and glass, 42.5wt% acrylic resin and 22.6wt% silicone resin excluding solvent. The irreversible temperature indicating paint has four or more colour changes in the temperature range 500 DEG C to 900 DEG C. The irreversible temperature indicating paint is used to determine the temperatures to which various parts of turbine blades, turbine vanes or other components are subjected in operation of the gas turbine engine.</p> |
