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The darker the color, the better the UV protection, such as black, dark blue, dark green, etc., the light color is relatively non-heat absorption, but the UV protection function is weaker than the dark color.
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Under the same conditions, the darker the fabric, the better its UV resistance. In contrast, black, navy blue, and dark green have better UV protection than light blue, light pink, and light yellow.
White does not absorb heat, but absorbs ultraviolet rays. There is no common sense upstairs, please don't curse.
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The cheap ultra-light sunscreen umbrellas sold on the market basically cannot achieve the effect of sun protection, so you must look for the manufacturer and brand when buying this kind of sunscreen umbrella. According to reports, the choice of anti-ultraviolet umbrella mainly depends on the fabric of the umbrella. Studies have shown that thick fabrics with umbrella surfaces have better UV resistance than thin ones, and among the untreated fibers, polyester fibers have the best UV resistance, which is related to the effect of benzene ring in its molecular structure to absorb ultraviolet rays.
The ultraviolet resistance of cotton (nylon), viscose (rayon, rayon), and cotton and silk in natural fibers are not ideal. When choosing a UV-resistant umbrella, try to choose a thicker fabric with polyester fibers. At present, the main products on the market are jacquard satin, silver onion satin, transfer satin, mark cloth, bumper cloth and t c cloth.
In addition, the tighter the fabric, the stronger the light blocking ability and the less UV light penetration. In woven fabrics, the porosity of the general plain weave fabric is greater than that of the twill, and the twill is greater than that of the satin, so the UV resistance of the plain weave is poor, while the satin fabric is the best. Third, the darker the color of the fabric, the smaller the UV transmittance, and the better the UV protection.
Therefore, when choosing a UV umbrella, it is necessary to consider the fabric of the umbrella and the tightness, color and thickness of the fabric in order to achieve the best UV protection effect.
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<> color with good UV protection effect:
1. Red is the color that best blocks ultraviolet rays.
Sunlight is divided into visible and invisible, visible light refers to what can be seen by the naked eye, invisible light refers to what cannot be seen by the naked eye, such as ultraviolet rays, infrared rays, etc., and ultraviolet rays are the most damaging to the human body in sunlight.
The red light wave is the longest, which can absorb a large amount of ultraviolet rays in the sun, protect ** from damage, and prevent **aging and even cancer, while the effect of other clothing colors is weak.
2. The sunscreen effect of black should not be underestimated.
Contrary to light-colored dyes, dark dyes can absorb more ultraviolet rays, the darker the color, the higher its ultraviolet protection performance, and the better the protection against **, such as black and navy blue, which is second only to red to the color that can block ultraviolet rays the most. Zheng Huai Lao.
Although dark clothes absorb more heat, the heat absorbed can become the driving force of air convection in the clothes, just like in the summer afternoon, the ground is heated and easy to form local convection or even bring thundershowers, the air convection in the clothes can also take away the sweat and part of the heat on the surface, and the human body naturally feels cool.
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There is no color that can resist ultraviolet rays, just to see which color can absorb as little ultraviolet rays as possible.
Light-colored ones generally absorb ultraviolet rays more slowly, such as white, off-white;
There are also light pink colors: pink green, pink, pink yellow, powder blue, etc.
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Red is the color that is best suited to block UV rays. Red visible light has the longest wave, which can absorb a large amount of ultraviolet rays in the sun, protect ** from damage, prevent **aging and even cancer, while other clothing colors (including white) have a weak effect.
The darker the color, the higher its UV protection, such as black, navy blue, dark blue, deep purple. It is the color that blocks ultraviolet rays the most after red.
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Hello dear! It's red. Under the same conditions, the darker the fabric, the better its UV resistance, the more sunlight it can absorb, and the better the sun protection effect.
As we all know, in the ultraviolet spectrum, the red light wave is the longest, it can absorb a large amount of ultraviolet rays in the sun, and the shortest from the red spectrum is the ultraviolet rays. Therefore, red is the color that best blocks UV rays, and red has the best sun protection. The darker the color, the better the sun protection.
Wear different colors of clothing at the same time, and the ranking of the seven colors of UV protection is: red, black, blue, green, pink, yellow, white. Among them, the black sunscreen branch is second only to red in the early effect, which can effectively absorb ultraviolet rays and has a good effect on blocking ultraviolet rays.
The white sunscreen effect is the worst, and sensitive people who wear white clothes for a long time and are exposed to ultraviolet rays may also have symptoms such as cancer.
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