synonymSunshade(Umbrella used to block direct sunlight) Generally, it refers to solar umbrella (umbrella)
The sun umbrella is an umbrella that is mainly used to block direct sunlight.The solar umbrella can block about 70 ultraviolet rays, but cannot isolate the reflectedultraviolet rays。
If there is no anti ultraviolet coating on the umbrella, you can also use an ordinary sun umbrella. The defense effect of the black umbrella is relatively good, followed by pink and goose yellow, while red has almost no anti ultraviolet coatingfunction。[1]
Chinese name
sun umbrella
Foreign name
Sun umbrella
Elaboration
Block direct sunlightto beamAnd an umbrella to keep out the rain
The functions of large and small sun umbrellas are different. There are also some differences in the selection. First, don't be confused by the dazzling name when buying an umbrella. The key to the radiation protection function of the sun umbrella is the fabric used, as long asAnti radiation fabric, such asSilver glue、Pearlescent cloth, Seding, etc. The UPF values are all greater than 50. When the UPF values are all greater than 50, do not use the sun umbrella when the wind is strong. Many small sun umbrella frameworks arealuminium alloyTo make it more convenient, some sunshade frames are partially replaced with plasticMetalIn windy weather, it is easy to deform the umbrella framework.
one
Selection of large solar umbrella:
Large solar umbrellas generally refer to non hand-held solar umbrellas, mainlyfixedUsed on the ground.High quality large solar umbrellas should have the functions of ultraviolet protection, rain protection and high wind resistance at the same time. When selecting the umbrella surface, it is best to choose the silver coated cloth umbrella surface, because the silver coated layer can reflect most of theultraviolet raysAt the same timeRain proof functionThe second is to choose a more dense twill cloth and plain cloth umbrella surface.
The wind resistance of large solar umbrellas is mainly determined by the umbrella base, umbrella pillar and umbrella bone. The umbrella base generally has many iron parts, cement, marble and water injection and other umbrella bases.There are generally five kinds of materials for umbrella pillar and umbrella bone - wood, iron, aluminum alloy, stainless steel and new composite materials.The wood technology is complex, the cost is high, and it is easy to be damaged, which is rare in the market;At the same time, it has the advantages of high strength, no deformation, no rust, strong wind resistance, and moderate price. Due to the advantages of material performance, the size can be made very large, but there are not many manufacturers that can produce it, and it is difficult to buy it in the market. It is best to choose such a wind proof solar umbrella.In short, the wooden material is easy to damage, the iron umbrella is cheap, the aluminum alloy and stainless steel umbrella is good in quality and high in price, and the composite umbrella is wind resistant.
See the figure below for the large solar umbrella:
2. Selection of small solar umbrella:
The choice of anti ultraviolet umbrella mainly depends on its fabric.Research shows that the cloth with thick umbrella surface is more resistant than that with thin umbrella surfaceUV linearityGood. Generally speaking, the anti ultraviolet effect of cotton, silk, nylon, viscose and other fabrics is poorpolyester fiberBetter;Some consumers think that the thicker the umbrella surface is, the better the anti ultraviolet performance is. In fact, this is not the case, such asParadise umbrellaSeries developed aFlimsyHowever, the protective performance of very compact fabrics is far better than that of ordinary fabrics;In addition, the darker the color of UV protection performance, the better. The satin fabric is the best, followed by twill and plain.
Relevant experts also remind consumers to recognize the UV protection performanceidentification。The upcoming national standard stipulates that only when UPF>30 and the transmittance of UVA is less than 5%, can it be called an anti ultraviolet product, and the protection grade is marked as UPF30+;When UPF>50, it indicates that the product has excellent UV protection performance, and the protection grade is identified as UPF50+.
ultraviolet-proof
Announce
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In order to prevent UV damage to the skin, a sunshade with UV protection function is usually the choice of people.There are many kinds of sun umbrellas. The anti ultraviolet effect of sun umbrellas varies according to the shading rate of fabrics.
Umbrella fabric
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Usually we see some outdoor sun umbrellas made of polyester cloth, oxford cloth and canvas.Polyester cloth has the best anti rust and anti rust properties, and the price is relatively affordable,oxford Waterproof is quite good, but the price is a little high.Goran polyester fabric can also be made into very high-grade fabrics. For example, the texture of the umbrella with PA, PU, UV and coating is better, and it can really play the role of three proofing.
