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I found this... thought it might help (look on the left under Web Links to find the original source page from EpoxyProducts.com):
"Epoxies yellow, chalk (or more commonly least lose their gloss), in direct sunlight (UV). The yellowing can be a real problem. For pigmented epoxies select colors that are dark or contain a lot of yellow (such as green). Even clear epoxies will yellow and cloud up. Often epoxies are topcoated with latex or urethanes that will retain their color and attractive gloss. This is particularly true if color coding or matching company colors is important.
There are special epoxy formulations that have increased chemical resistance, increased temperature resistance, the ability to be applied underwater, and enhance resistance to yellowing and UV damage.
Another clue of a cheap epoxy is if it requires haz-mat shipping. Generally the better resin systems can be shipped non-haz-mat. The exceptions are special high temperature and/or more UV resistant epoxies, which often require haz-mat shipping."
I also found this at E-poxy.com (again, link on the left):
"The primary disadvantage common to most epoxy systems is poor UV resistance. UV light can lead to chalking (yellowing) and loss of gloss. Although the strength of the epoxy will not be compromised, the material is no longer aesthetically pleasing."
What else can I help you with?
Is phenolic UV resistant?
Phenolic resins are generally not very UV resistant and can degrade when exposed to sunlight, which can lead to discoloration, embrittlement, and loss of properties. To enhance UV resistance, additives or coatings can be used to protect phenolic materials from UV radiation.
What is a non thermoplastic?
A non-thermoplastic material is one that does not soften or flow when exposed to heat and instead undergoes a permanent chemical change. Examples include thermosetting plastics like epoxy resins or phenolic resins, which form irreversible chemical bonds when heated and cooled, making them resistant to high temperatures.
What are classifications of resins?
Resins can be classified into several categories based on their origin and chemical structure. The primary classifications are natural resins, such as rosin and gum, which are derived from plant exudates, and synthetic resins, which are man-made and include types like thermosetting resins (e.g., epoxy and phenolic) and thermoplastic resins (e.g., polyethylene and polystyrene). Additionally, resins can be categorized by their application, such as industrial, decorative, and adhesive resins, each serving specific purposes in various industries.
What are the benefits of epoxy floors over hardwood floors?
Epoxy floors are very strong and durable, a well installed epoxy floor can last up to 25 years. They are also scratch resistant and are ideal for areas with heavy traffic
What is the best homemade UV resin?
The best homemade UV resin typically consists of a mixture of epoxy resin and a UV-sensitive hardener. To create it, combine a high-quality epoxy resin with a UV stabilizer to enhance its resistance to yellowing and degradation from sunlight. It's essential to ensure proper mixing and curing under a UV light source for optimal results. Always follow safety precautions when handling resin, such as wearing gloves and working in a well-ventilated area.
What are the differences between epoxy and acrylic resins, and how is epoxy acrylic used in various applications?
Epoxy resins are typically stronger and more durable than acrylic resins. Epoxy resins are often used for industrial applications, such as in construction and aerospace industries, due to their high strength and chemical resistance. Acrylic resins, on the other hand, are more flexible and have better UV resistance, making them suitable for applications like coatings and adhesives. Epoxy acrylic is a combination of epoxy and acrylic resins, offering a balance of strength, flexibility, and UV resistance. This hybrid resin is commonly used in applications such as automotive coatings, marine coatings, and flooring systems where a combination of properties is required.
What are the differences between epoxy and acrylic resins, and how can they be used together in a project?
Epoxy resins are typically stronger and more durable than acrylic resins. Epoxy resins are often used for projects that require high strength and resistance to heat and chemicals. Acrylic resins are more flexible and have better UV resistance. Both epoxy and acrylic resins can be used together in a project by layering them to take advantage of their different properties. For example, you can use epoxy resin as a base layer for strength and durability, and then use acrylic resin as a topcoat for its flexibility and UV resistance. This combination can create a project that is both strong and long-lasting.
Is phenolic UV resistant?
Phenolic resins are generally not very UV resistant and can degrade when exposed to sunlight, which can lead to discoloration, embrittlement, and loss of properties. To enhance UV resistance, additives or coatings can be used to protect phenolic materials from UV radiation.
What is epoxy resins in briefly?
Epoxy resins are advanced thermosetting resins used in FRP composites. Epoxy equivalent of an epoxy sample is determined by a standard titration method [6] using hydrogen bromide solution in acetic acid.
What are the differences between epoxy acrylic resin and other types of resins used in crafting and construction?
Epoxy acrylic resin is a type of resin that combines the properties of epoxy and acrylic resins. It is known for its high durability, clarity, and resistance to yellowing. Compared to other resins like polyester and polyurethane, epoxy acrylic resin has better adhesion, chemical resistance, and UV stability. It is commonly used in crafting and construction for its strength and versatility.
Can you mix epoxy seal krete with patio paint?
No, Seal-Krete Epoxy-Seal is an acrylic-epoxy blend. By mixing 2 unlike resins (patio paint and Epoxy-Seal) the hard Epoxy-Seal acrylic-epoxy resins would become weak resulting in a coating failure. No, Seal-Krete Epoxy-Seal is an acrylic-epoxy blend. By mixing 2 unlike resins (patio paint and Epoxy-Seal) the hard Epoxy-Seal acrylic-epoxy resins would become weak resulting in a coating failure.
What kind of paint is used for striping airport and helicopter landings?
I recommend a good epoxy paint with the Uv resistant seeler.
What has the author William N Bowie written?
William N. Bowie has written: 'Epoxy resins: market survey and users' reference' -- subject(s): Epoxy resins
What is the difference between epoxy and acrylic, and how does it impact their respective uses in various applications?
Epoxy and acrylic are both types of resins used in coatings and adhesives. The main difference is that epoxy is a stronger and more durable material, while acrylic is more flexible and resistant to UV light. This difference impacts their uses in various applications - epoxy is often used for heavy-duty applications like flooring and industrial coatings, while acrylic is more commonly used in decorative coatings and art projects.
What are the differences between polyurethane and epoxy coatings, and which one is more suitable for my project?
Polyurethane coatings are more flexible and resistant to UV rays, while epoxy coatings are more durable and chemical-resistant. The choice between the two depends on the specific needs of your project. If you need a coating that can withstand harsh chemicals and heavy traffic, epoxy may be more suitable. If you need a coating that is more flexible and resistant to UV rays, polyurethane may be a better option.
What is epoxy mortar?
Epoxy resins are used with aggregate (silica sand) to produce epoxy mortar or epoxy concrete, which is used for structural repairs of concrete.
What has the author A F Yee written?
A. F Yee has written: 'Toughening mechanism in elastomer-- modified epoxy resins-- part 1' -- subject(s): Elastomers, Epoxy resins
