Neon tube of neon light
1. Divided by specifications: 6, 7, 8, 9, 10, 12, 15, 18, 20 mm and other thicknesses.
2. Classified by glass material:
① Sodium glass tube (or lime material glass tube) This kind of glass tube has poor stability, and is easily deteriorated and efflorescence (weathering) after being damp, and has poor fastness and easy to burst. About 80% use this material in China.
②The lead glass tube (also known as Hongdan material glass tube) is better than soda glass in thermal, mechanical, electrical, chemical stability, vacuum and optical properties, and its weather resistance and service life greatly exceed soda glass. GM mostly uses this kind of lead glass tube, and the amount used in China has reached about 20-30%. For all manufacturers who are pursuing high-quality production, users use lead tubes to make neon lights. Lead glass is divided into heavy lead glass, medium lead glass and light lead glass according to its lead content.
③Colored glass tube, this kind of glass tube has been filled with dye when the glass tube is drawn, and the produced glass tube is already colored glass tube.
3. The neon tube is coated with fluorescent powder materials:
① Most neon tubes used are sprayed with "ordinary fluorescent powder", which is relatively cheap and can generally meet the requirements of various colors.
② "Three primary colors" phosphors (also called rare earth phosphors) have better brightness, chroma and freshness compared with ordinary phosphors.
4. The process of spraying phosphor is divided into two types: water coating and glue coating.
①Water coating is ready to use alcohol, ketone solvent mixed phosphor powder sprayed on the inner wall of the lamp tube, and let it dry naturally.
②Glue coating is sprayed with glue liquid mixed with phosphor powder, and then dried in an oven, its viscosity and fastness are much better than that of water-coated powder tube.

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