Moisture inside headlight
The temperature in the area where light energy is irradiated and air circulates is very high, while the area where light cannot be irradiated in the car lamp, and the temperature in the area with poor air flow will be very low, resulting in uneven temperature distribution in the lamp, forming a larger Temperature difference; especially in the lamp cavity, due to its uneven surface, it provides a very favorable place for water vapor condensation.
Solution
1. Place ordinary desiccant (such as silica gel, montmorillonite, high moisture absorption)
A) Silica gel desiccant: balanced adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc. Therefore, the application range is very wide, especially in the fields of medicine, food, electronics and other fields of moisture-proof applications. However, its moisture absorption capacity is only about 35% in a high temperature and high humidity environment, and the raw material production process pollutes the environment and is more expensive ,
B) Montmorillonite: Natural mineral soil, chemically stable, environmentally friendly, non-toxic and harmless, and low cost. However, its adsorption capacity is low, and its moisture absorption capacity is only about 20% in a high temperature and high humidity environment;
c) High hygroscopic desiccant: The common high hygroscopic desiccants on the market are all calcium chloride as the main raw material to make it into a gel after moisture absorption, and the moisture absorption capacity is about 25% under low humidity (RH=20%) It is about 200% under high humidity environment (25℃, RH=90%). However, after the high moisture absorption desiccant absorbs moisture, the water vapor pressure is relatively large. When the environmental humidity is low, some water vapor will be released. At the same time, liquid leakage is prone to occur on the outer packaging, which affects the quality and life of the car lights.
use chunwang packaging special desiccant for car lights
a) Curing after moisture absorption: As the moisture absorption progresses, the absorbed water will undergo a curing reaction with the desiccant to form a block solid, unlike calcium chloride desiccant that absorbs moisture to a certain extent and becomes a viscous liquid, which completely solves the leakage problem.
High-quality packaging material
The packaging material used in this product is "tymek", which has the characteristics of dust-proof, no wrinkle when baked at 120℃, anti-aging and other characteristics
Usage
It is mainly used for Car Lamps drying, but also for other types of lamps
Moisture absorption performance test of car lamp desiccant
According to the data obtained by testing in a thermostatic and humidity test chamber, it's maximum moisture absorption rate can reach 210.31% ( Temperature=40°C & RH=90%)
Hot Tags: auto headlight desiccant, China, manufacturers, suppliers, factory, made in China, cheap
