Solar energy saving lamp electronic phosphors powder/on-line viscosity measurement

Electronic powder is one of the key materials of manufacturing energy-saving lamp tube, the thickness of coated directly affect the properties of the tubes and life. Do not match the phosphor powder coating layer thickness and tube, is one of the most important factors to influence the consistency of energy-saving lamp tube lights. International advanced energy-saving lamp tube production company, do more strict about the powder coating process control: in the process of constantly stirring barrels of whitewash suspension slurry viscosity change within online monitoring bucket of whitewash became the first choice of advanced technology.

at present, shenzhen first wave technology production of a new type of FWS - 3 on-line viscosity monitoring sensor has been applied in energy-saving lamp tube production enterprise and obtain good effect. 美国鱼类和野生动物管理局- - - - - - Type 3 online liquid viscosity sensor are all kinds of paint, all kinds of substrate adhesive ink, food, pharmaceutical, chemical, rubber, oil, or any demand of high precision and rapid response time viscometry application ideal choice. New method of ultrasonic vibration in a wide range of continuous and real-time measurement guarantees the excellent accuracy and can be repeated. Used for slurry, corrosion shape, flow and bubble shape is difficult to measure coating of excellent solution.

the ultrasonic vibration technology. The international advanced level and high precision, long-term stability, no moving parts, no maintenance. Is not affected by the environment is applied to a wide range of working temperature, pressure and fluid viscosity change need not special installation. Figure 1 is a sensor contour map.

figure 1 sensor appearance figure

energy-saving lamp tube production enterprise is a big enterprise specializing in the production of energy-saving lamps, we with respect to its application in the production process monitoring of electronic coating, the data shows that better performance of on-line viscosity sensor. Enterprise used for organic coatings ( Soluble organic binder for cotton adhesive solution nitrate, acetic acid butyl ester as solvent) 。 The production process of the coating by mechanical or magnetic thermostatic mixing constant speed stirring, as shown in the diagram as shown in figure 2

figure 2 electronic coating viscosity measurement schematic

figure 3 shows the ratio for good coating adding solvent dilution electronic coating viscosity sensor output response curve, the curve is added relative to the ratio of good solvent electronic coating weight percentage ( WT%) As the Y axis, the output of the sensor response for the Y axis fitting. By curve can be seen that the output of the sensor of electronic coating added organic concentration linear response of the diluent. And the trend is obvious.

figure 3 sensor response curve figure 4 shows the production process of coating dynamic viscosity and sensor output corresponding curve. In the production process using rotational viscometer on electronic coating viscosity measurement and corresponding sensor output curve fitting.

4 sensor response curve for electronic coating viscosity

plexus can be seen in figure 4, the output of the sensor to the electronic coating the dynamic viscosity of the response of the linear relationship, with the increase of electronic paint viscosity, the frequency of the sensor output value linear downward trend, and the response is sensitive.

the conclusion that produced by the above data can see, FWS - 3 online viscosity sensor can be sensitive accurate on-line monitoring electronic coating the change of viscosity, and stable output data repeatability is good, completely overcome the influence of electronic coating liquid and slurry. And can undertake acousto-optic alarm according to the set value, so as to take timely measures to remind operators. In guarantee energy-saving lamps production process control, improve the quality of CFL and play an important role in life.

edit: Sophy