Can a parasol be used as an umbrella? Can an umbrella block the sun?

The parasol is a very useful sun protection tool. Every summer, you can see many people using parasols on the streets. The use of parasols is very important. Parasols are exposed to the sun every day, and their lifespan will be shortened if used for a long time.

Parasols cannot be used as umbrellas. The coating of parasols is just a process, and the titanium dioxide in the coating (titanium dioxide can absorb ultraviolet rays, reflect and scatter ultraviolet rays, and transmit visible light. It is a physical shielding type ultraviolet protection agent with superior performance and great development prospects.) is to increase the function of anti-ultraviolet. However, with the process of urban industrialization, a large amount of carbon dioxide is emitted into the air, which generates carbonic acid when it meets water, making rainwater present weak acid properties. The sunscreen coating of parasols is relatively delicate, and the corrosive effect of rainwater will gradually make it lose its sunscreen, so it is not suitable for use as an umbrella.

Ordinary umbrellas cannot be used as parasols. The fabrics of a qualified anti-ultraviolet parasol are carefully selected, and are made of silver glue, satin, pearl glue, impact cloth, TC cloth and other fabrics. These fabrics are woven with high-density technology, making the molecular spacing of the fabric extremely dense. At the same time, the ultra-fine particles added to the coating have a great effect on the scattering and absorption of ultraviolet rays. Ordinary umbrellas are made of oil paper, oil cloth or plastic cloth. They only have the function of waterproofing, and do not have the effect of resisting ultraviolet rays. Therefore, they are cheaper than parasols.

1. When choosing an umbrella surface, umbrellas with obviously sparse fabrics generally have poor UV resistance.

2. Since fabrics tend to shrink, when purchasing a parasol, it is better to choose a larger umbrella rather than a smaller one.

3. The color of fabric is related to its UV protection performance. Under the same conditions, the darker the fabric, the better its UV resistance. In comparison, black, navy blue, dark green and light blue, light pink and light yellow have better UV resistance.

1. Choose a sun umbrella according to your purpose

There are actually two types of parasols: one is sun-proof and has the function of reflecting ultraviolet rays, and the other is sun-proof and has a high light-shielding rate. The former is suitable for people who don't want to get tanned, and the latter is suitable for people who are afraid of strong light but not tanned. Therefore, when buying a parasol, you should also buy it according to your needs. If you don't want to get tanned, you should try to choose a parasol with a high ultraviolet reflectivity.

2. Pay attention to the UV reflection processing of sun umbrellas

In principle, parasols made of dark-colored materials are less likely to let in ultraviolet rays than parasols made of light-colored materials. However, if better processing methods are adopted, people can choose parasols of different colors according to their preferences, without having to stick to dark-colored ones.

3. Pay attention to the color inside the parasol

When buying a sun umbrella, many people care about the color of the outside, but the color of the inside is also closely related to its effectiveness. If the inside of the sun umbrella is a shiny light color, it is easy to collect ultraviolet rays reflected from the ground, so people will get tanned even if they are holding a sun umbrella. Therefore, when choosing a sun umbrella, people who are afraid of getting tanned should pay attention to choosing products with a dark interior such as black or dark blue.

4. Choose materials that are not easy to collect heat

Generally, parasols made of silk or linen can isolate the heat from the sun outside the umbrella, so people under the umbrella will not feel hot. In addition, thick materials and double-layer parasols also have good heat insulation effects and are more worth buying. On the contrary, parasols made of chemical fiber and polyester fiber are not easy to dissipate heat. Walking under the sun with such an umbrella will feel particularly hot. Please pay attention when buying!

Tips for using a sun umbrella: Don’t use an umbrella for more than three years. Sun umbrellas are exposed to the sun every day. Over time, the material will wear out to a certain extent, resulting in a gradual decrease in the reflectivity of ultraviolet rays. No matter how careful you are when storing a sun umbrella, the life span of a sun umbrella is only 2-3 years. If you want to make the sun umbrella work, don’t always use an old umbrella. Once the sun umbrella reaches its shelf life, don’t hesitate to get a new one!