STUDY OF DE-ICING LIQUID USING AN OPTOELECTRONIC REFRACTOMETER

This work highlights the development of optoelectronic refractometer to study anti-icing liquids. Determining the composition authenticity and the flow rate of these liquids has always been a relevant task for the airport maintenance units, engaged in the processing of the aircraft body. The paper presents the objects of research: aqueous solutions of ethylene glycol and propylene glycol, which make up 95% of the composition of liquids of TYPE I, TYPE II, TYPE IV. The structural diagram and appearance of an optoelectronic refractometer are given. The results of measurements of the temperature dependences of the refractive index n(t) for solutions of ethylene glycol and propylene glycol in the temperature range from 12 °C to 100 °C and for concentrations from 0% to 100% are obtained. The spectra of ultraviolet optical transmission in ethylene glycol and propylene glycol of high purity in the wavelength range λ 210–320 nm with an error not worse than T = 0.5% are studied. The technical characteristics of an optoelectronic refractometer are given.