Can umbrellas cover the rain? Umbrella shelter from rain


Can umbrellas cover the rain? Do you often use small umbrellas as umbrellas? I don’t know if this pair of umbrellas is not good. The surface of the umbrellas is coated. Titanium dioxide is in the coating. Titanium dioxide can absorb ultraviolet rays and reflect. And scatter ultraviolet light, then let Xiaobian take everyone to see the relevant content of the relevant content of the umbrella can cover the rain .


遮阳伞可以遮雨吗?


Sun umbrellas can be used as umbrellas. If the inner layer of the umbrella is coated, as long as the coating is not damaged, the UV protection effect of the umbrella will not be reduced.


Expert introduction:


1. When selecting the umbrella surface, the anti-ultraviolet performance of the umbrella which is obviously sparse in the fabric is generally poor.


2, due to the shrinkage of the fabric, when buying a parasol, the umbrella surface should be large and not small.


3. The color of the fabric is related to the UV protection performance. Under the same conditions, the darker the color of the fabric, the better the UV resistance. In contrast, black, navy, dark green, lighter blue, light pink, light yellow and other UV-resistant properties are better.


4. In the case of wet umbrella surface, due to the optical conduction of water, the transmittance of ultraviolet light increases, and the protective effect is reduced. Therefore, wet umbrellas should not be used to protect against UV rays.


5, UV protection performance, satin fabric is the best, followed by twill, plain.


6. In the space we live in, ultraviolet light will radiate from the various angles to the human body, and the anti-UV umbrella can only block the ultraviolet rays radiated from the top of the head to the umbrella surface.


遮阳伞可以遮雨吗?


According to the national standard "Assessment of UV Protection Performance of Textiles", if the UPF (UV protection coefficient value) is greater than 30, and the UVA (long-wavelength ultraviolet ray) transmittance is less than 5%, it can be called UV protection products, and the protection grade standard is " UPF30+”; When the UPF is greater than 50, it indicates that the product has excellent UV protection and the protection rating is “UPF50+”. Consumers should carefully check the protection level when purchasing.


According to the nature of the fabric, it can also be initially identified. Generally speaking, cotton, silk, nylon, viscose and the like have poor UV protection properties, and polyester is preferred.


When buying an umbrella, pay attention to whether there is a volume label in the umbrella that the umbrella is anti-UV, that is, the umbrella can really prevent ultraviolet rays (the general umbrella can not resist ultraviolet rays). Of course, there are also dual-use umbrellas that are both rain-proof and UV-resistant. Usually the label will be sewn in the umbrella inside the frame, or it will be marked with anti-UV on its price tag.


Generally, the umbrellas are all UV-protective, and the penetration of ultraviolet rays is not strong. It may be because some manufacturers are alarmist, making everyone seem to regard it as X-rays, and they want to wear a layer of lead-containing protection. clothes.


When I was in high school, I asked the physics teacher about the problems. He said that our ordinary glass can block the ultraviolet rays. Nowadays, the technology is developed. Generally, a protective film is attached to the glass, and its ultraviolet shielding effect is further enhanced.


When I was studying at the university, the teacher also said that in the hospital ward, sometimes ultraviolet disinfection was used. At this time, the patient's whole body was covered with a quilt, and then a newspaper was covered on the patient's face. Block UV rays. It can be seen that the general fabric and paper can play the role of preventing ultraviolet rays.


How about, read the relevant introduction to the parasol can cover the rain, is it also understood that a lot of parasols can cover the rain? I hope that you can learn more about home improvement knowledge through this article, and you will be able to create a more perfect home environment. Thank you for reading this article and your support and love for Xiaobian. If you want to get more information about home improvement, please continue to pay attention to the decoration home network.



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