Proportioning process of flat-tube screen-printing fluorescent powder

Abstract

The invention belongs to the technical field of a screen-printing fluorescent powder proportioning process, in particular to a proportioning process of flat-tube screen-printing fluorescent powder, which comprises the following steps of: step A, proportioning ethyl cellulose, terpineol, diethylene glycol butyl ether acetate and ethyl lactate into oiling powder, wherein every 43g of ethyl cellulose is proportioned with 400ml of terpineol, 100ml of diethylene glycol butyl ether acetate and 100ml of ethyl lactate; step B: filtering the proportioned oiling powder; and step C: proportioning screen-printing fluorescent powder which is prepared by proportioning the components in parts by weight: 10 parts of P45 fluorescent white powder, 5.8 parts of P45 fluorescent blue powder and 4.8 parts of oiling powder. The quality of the fluorescent blue powder can be improved by the invention so as to improve the quality of a black-white flat CRT (Cathode Ray Tube).

Description

Technical field: [0001] The invention belongs to the technical field of fluorescent powder modulation technology, in particular to the modulation technology of flat tube screen printing fluorescent powder. Background technique: [0002] With the continuous development of the national economy, the living standards of the people have gradually improved, the housing conditions of urban residents have been significantly improved, new buildings have sprung up, and the video intercom system matching the building construction has also been rapidly developed. develop. At present, in the video intercom system, the black and white flat picture tube CRT is often used to realize the monitoring function. [0003] Black and white flat picture tube CRT is a narrow-beam high-current electron beam tube that reproduces TV images through electro-optic conversion. Its basic structure includes an electron gun, a deflection system, a fluorescent screen and a glass bulb. The basic working princi...

AI Technical Summary

Problems solved by technology

In the existing preparation process of screen printing phosphor, the control of impurities, dust, powder spots, etc. is not strict enough during the preparation process, so that the screen printing phosphor is prone to white spots, pink spots, black spots and other undesirable phenomena, and the screen printing phosphor The unreasonable composition and deployment of the screen printing phosphor make the viscosity and hardness of the screen printing phosphor not meet the quality requirements, which seriously affects the quality of the black and white flat picture tube CRT