Desiccant For Automobile Lights

Packing: 1000 packets/carton

After entering the winter, many car owners will find that their car’s headlights will fog up and condense a lot of water droplets. In fact, this is a normal phenomenon, because there is a vent pipe on the back cover of the car’s headlights, which is mainly used for heat dissipation. The heat generated when the lamp is turned on is exhausted from the vent pipe, but sometimes moisture enters the vent pipe, causing fog to be generated in the car lights.

The fogging of car lights requires basic conditions:

The air in the car lights contains enough water vapor, a large temperature difference and a condensation core. The most important situation is that the car lights are in an environment with high humidity and high temperature, and the air humidity in the car lights is relatively high. When the ambient temperature decreases, if the water vapor in the car lights cannot flow and diffuse fully into the environment , Still maintain a high concentration, when the temperature of certain areas in the lamp is lower than the local critical temperature of water vapor, fogging will occur. The water vapor in the car lights comes from the water vapor contained in the air flowing into the surrounding environment of the car lights; a lot of heat is generated when the car lights are lit.

The temperature of the area where the light can be irradiated and the air can flow to is very high, but the area where the light cannot be irradiated in the car light, and the temperature of the area with poor air flow will be very low, which causes the uneven temperature distribution in the lamp, forming a larger Temperature difference: In the air inside the lamp cavity, the condensation core is relatively small, and the water vapor is not easy. On the inner surface of the lamp cavity, the concave and convex surfaces can not only absorb water vapor, but also provide the condensation core. From the perspective of physical research, the temperature field, the flow field, the water vapor concentration field, the surface shape of the material and the internal surface treatment process of the lamp are the main factors that affect the fogging.

Solution:

Put a special desiccant for car lights in the car lights:

Quick suction type:

Permanent adsorption type:

Usage: Use the two together, the quick suction type can quickly absorb the water vapor in the car lights, and the permanent type can absorb the water vapor in the car lights for a long time.

Why can't ordinary desiccant solve the problem of car lights fogging?

1. Ordinary desiccant has a short action time, because its adsorption capacity is only 30%, and the special desiccant for car lights is efficient and lasting: the ultra-fast moisture absorption speed can quickly reduce the environmental humidity to the ideal humidity, and the large moisture absorption (maximum moisture absorption) Reach more than 250% of its own weight, depending on the variety.) Ensure the durability of moisture absorption.

2. Ordinary desiccant will release water after the high temperature of the car lamp: it is a physical moisture absorption, which only temporarily stores the adsorbed water in the micropores. When the environmental humidity decreases, the adsorbed water is released into the environment again . Although calcium chloride desiccant is also chemically hygroscopic, calcium chloride becomes a viscous liquid after absorbing moisture, and the water vapor pressure is relatively high. When the environmental humidity is low, it will still release a lot of moisture. The special desiccant for car lights produced by our company is different. It belongs to predatory chemical moisture absorption. Part of the absorbed water is firmly locked in the form of crystal water, and the other part is transformed into solid matter with the solidification reaction. Once absorbed, it is difficult to release into the environment and can maintain a stable and dry environment