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The phenomenon of fading the wood museum showcase during use, so do you know what causes the phenomenon of fading the wood museum showcase? Let me introduce it in detail: 1. Optic chemical degradation; The exposure of ultraviolet light and visible light is the most important. The wood placed under the sun will quickly develop chemical degradation, and the surface color of the wood will change.
This causes the wooden museum showcase to change color. Factors affecting the color deformation: 1. Temperature; progress temperature can accelerate chemical reactions.
Therefore, progressive temperature can accelerate light degradation and oxidation reactions. 2. Water; Generally, water is a polar solvent, soaked in the wall of wood cells and expands it, increases the interval of molecularly to facilitate light transmission, thereby generating more free radicals.
When the water content of wood increases from 0 to 3.2%, the ESR intensity increases; when the water content is 6.3%, the free radical concentration reaches the peak and the water content increases again.
The main reason is that excessive water molecules in wood can form a free radical-water network and object with free radicals, which reduces the free radical concentration. 3. Tree species; the larger the capacity of the wood, the lower its corrosion rate.
In addition, oxygen, metal ions, fuel, etc. can also promote the formation of free radicals. Second, the discoloration caused by chemical reagents; chemical reagents cause changes in the surface color of the wood on the surface of the wood.
Features: 1. Fast response, wood changes color in a short period of time; 2. Most of them are glowing during processing, or after processing; 3.
The premise of reaction, such as temperature, time, and pH, etc. Chemical reagents: Chemical reagents that cause the color changes of the wood surface are: 1. Transitional metal and oxidant; 2.
Chemical assistants in acid, alkali or other processing processes. Remember: After buying a showcase, you must choose the appropriate position, not too humid; pay attention to the maintenance and maintenance of the showcase; avoid direct sunlight. What are the reasons for the fading of the wooden museum showcase? I hope that the above introduction can help everyone.
Generally, the main reason for the fading of the wooden display cabinet is light. The cabinet brings unnecessary damage. .
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