Analysis of LED flexible neon light materials

The origin of "neon light"

The neon lamp, born in 1898, is a rare gas neon gas (neon) injected into a vacuum glass tube, and then the metal electrodes enclosed in the two ends of the glass tube are energized with a high-voltage power source, under the action of a high-voltage electric field, the neon in the tube is ignited. Gas, produce a luminous effect. Therefore, this type of light that energizes the gas was named "neon light", which was transliterated as neon light.

development path

With the development of LED semiconductor technology, neon lights with LEDs as light sources have gradually replaced traditional neon lights with their high luminous efficiency, low energy consumption, and high reliability. The material of the lamp body has also been replaced from the glass material of the traditional cold cathode tube by a flexible plastic material that is bendable. Its application is simpler, more reliable, and wider in application fields.

LED flexible neon strips using PVC materials were introduced to the market earlier, and relying on their mature technology and price advantages have been used until now. However, as the market puts forward higher requirements for products and applications, the defects of PVC material characteristics gradually appear. Therefore, one A material with better performance-silica gel has entered the field. After the continuous improvement of process technology in recent years, the process of LED silicone neon light strips has become mature and perfect. Its excellent characteristics make it gradually replace PVC neon light strips and become the current market. The mainstream development direction of the country.

Performance analysis of PVC and silicone materials

Aiming at the flexible neon light strips using PVC and silicone materials in the current market, the following comparative analysis is caused from the material itself:

The temperature resistance of PVC material is about -15℃-80℃. The material feels hard and is easily affected by various outdoor factors. The stability of light and heat is poor. After continuous sunlight exposure, it will decompose to produce hydrogen chloride and further autocatalytic decomposition. It is suitable for special places where there is acid, alkali and salt corrosion. In addition, the burning of PVC will produce irritating and toxic gases.

Compared with PVC materials, silicone materials have the following advantages:

Excellent weather resistance: The material has good thermal stability and can maintain a normal soft state for a long time under an environment of -50 ℃ -150 ℃, without embrittlement, deformation, softening, aging, etc.

Excellent UV resistance: It can be exposed to strong sunlight for a long time (more than 5 years) without yellowing and aging, and it can be used in outdoor environments for a long time.

Excellent corrosion resistance: Silica gel has stable chemical properties and does not react with any substances except strong alkalis and hydrofluoric acid. It can resist the corrosion of ordinary acids, alkalis, and salts. It can be used in seaside, chemical plants, gas stations, and yachts. Environment or facilities.

Excellent light transmittance: applied to the light strip, the light loss of the light strip can be reduced to a lower level.

Excellent tear resistance: excellent tear resistance, good physical and mechanical properties. After the silicone is molded, it can withstand arbitrary tearing by hand, and the silicone will not be damaged or deformed (it will rebound completely after being pulled up).

Good thermal conductivity: The thermal conductivity of extruded silica gel is 27W/MK, while the thermal conductivity of PVC is 0.14W/MK, which can effectively dissipate heat when applied to light strips.

It can be seen that in the future LED flexible neon strip products, silicone materials will occupy a dominant position with their outstanding comprehensive performance.