Categories: MISC

Is Silicone UV radiation Resistant

Silicone UV Radiation

Silicone rubber is a high performance elastomer that is used in a variety of applications. It has excellent thermal, mechanical and chemical stability which makes it ideal for use in outdoor environments. One of its key properties is its resistance to UV radiation, which allows it to be used in applications exposed to direct sunlight without fear of degradation over time. This makes silicone an ideal choice for any application requiring long-term outdoor exposure such as seals and gaskets, roof membranes, solar panels and more. The UV resistance of silicone depends on the specific formulation used; some silicones are naturally more resistant than others due to their higher molecular weight or fillers included within them. In addition, proper additives can be incorporated into the formula to further improve the UV resistance capabilities. These additives may include pigments, antioxidants and ultraviolet absorbers (UVAs). Pigments are designed to absorb certain wavelengths of light energy while antioxidants help protect against oxidative damage caused by oxygen molecules present in the atmosphere. Finally, UVA absorbers absorb ultraviolet light before it can cause damage to the rubber itself. All three types of additives work together synergistically to create a strong protection against UV radiation and keep your silicone products looking great for years on end! 

SUCONVEY silicone rubber sheet manufacturer

Properties of Silicone

Yes, silicone is very resistant to UV radiation and is often used as a coating or adhesive in applications exposed to sunlight. It can withstand long-term exposure to the sun’s UV rays without losing its physical properties. Silicone also has good weather resistance with excellent flexibility and tensile strength over a wide temperature range. This makes it ideal for outdoor products such as sealing gaskets, automotive window seals, garden hoses, and pool liners that are constantly exposed to the elements. Additionally, silicone has inherent flame retardant properties which add another layer of protection from fire damage. The combination of these qualities make silicone an excellent choice for many outdoor applications where durability and safety are important considerations. 

Impact of UV Rays on Silicone

Silicone is highly resistant to UV radiation, making it a popular choice in products exposed to sunlight. It can withstand temperatures ranging from -100°F (-73°C) up to 400°F (204°C). Silicone rubber will not stiffen or crack due to exposure to ultraviolet light, which makes it ideal for outdoor applications. In fact, silicone rubbers are used in many outdoor products such as seals and gaskets that must remain flexible over long periods of time despite exposure to direct sunlight. 

However, silicone does experience some degradation when exposed to UV radiation for extended periods of time; this includes discoloration, cracking and hardening of the material. The rate at which this occurs depends on the type of silicone used and how often it is subjected to UV radiation. For example, a product made with high grade silicone may be able to withstand UV rays for longer than one made with lower grade material. Additionally, the color of the finished product may fade faster if left outside in direct sunlight compared with being stored indoors out of direct sunlight. 


The conclusion of this blog is that silicone is UV radiation resistant, depending on the type of silicone used. In general, most silicones are considered to be more UV-resistant than other plastics or rubbers. As an example, polydimethylsiloxane (PDMS) exhibits excellent resistance to UV radiation even after long exposure times. However, it is important to note that not all silicones have the same level of resistance and some may degrade faster when exposed to sunlight. Therefore, it is important for manufacturers to select the right type of silicone for their application in order to maximize its performance and durability in any given environment. 

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