This is the case for the PC shell or cover of the low-cost LED guardrail tube on the market
LED guardrail tube is a common lamp for outdoor lighting. In order to seize the market, some unscrupulous businessmen use improper means to reduce the production cost of LED guardrail tube, which brings serious consequences to users. Let the editor tell you about the PC shell or cover of the low-cost LED guardrail tube on the market:
The main function of the PC shell of the LED guardrail tube is to mix light and prevent rain, so the shell of the LED guardrail tube is an important part of it, and there will be a cover on the outside. Good quality LED guardrail tubes will use materials with added UV resistance, such as imported materials from GE, Bayer, etc., while poor quality LED guardrail tubes are often made of materials mixed with nozzle materials, not to mention UV resistance, sun In places where the light is relatively large, in less than a month, the outer cover will turn yellow, so that the light-emitting effect will be worse, and the light transmittance will also be greatly reduced.
Disadvantages: cracking caused by thermal expansion and contraction and internal stress.
LED guardrail tubes generally work outdoors. Due to the influence of temperature difference, thermal expansion and cold contraction are the main reasons for the cracking of the outer cover. Therefore, qualified PC materials with a small coefficient of thermal expansion and cold contraction should be used to make LED guardrail tubes. However, if you choose a material with a nozzle material, due to the different material properties of the material itself, the internal stress generated during the extrusion and drawing process is difficult to remove, and the outer cover is easy to crack when used outdoors.
Therefore, products with the same appearance are not necessarily the same products with guaranteed quality. To make a qualified LED guardrail tube, you must pay attention to every detail of the process, and it is also very important to understand the selection of materials.
