Application of polyurethane epoxy resin yellowing agent on the ground of sports venues

Date：2025-03-17 Categories：Our Projects

Polyurethane epoxy resin yellowing resistance agent: “Invisible Guardian” on the ground of stadiums

In stadiums, the choice of floor materials is crucial. Whether it is a basketball court, badminton court or table tennis hall, a good piece of ground not only provides athletes with a good sports experience, but also protects their joints and bodies from harm. And under this ground, there is a kind of “behind the scenes” – polyurethane epoxy resin yellowing agents, which play a key role in obscurity. Today, we will unveil the mystery of this “Invisible Guardian”.

What is polyurethane epoxy resin yellowing resistance agent?

Polyurethane epoxy resin yellowing agent is a special chemical additive, mainly used to prevent epoxy resins and polyurethane materials from yellowing due to ultraviolet irradiation or oxidation during long-term use. This yellowing will not only affect the aesthetics of the ground, but may also reduce the physical properties of the material, thereby affecting its service life.

The causes of yellowing phenomenon

Yellowing refers to the phenomenon that some organic materials gradually turn yellow under light, high temperature or chemical reactions. Yellowing is particularly prominent for the ground of stadiums, as these sites often need to withstand high intensity UV radiation (such as outdoor venues) and frequent trampling and friction. Without the protection of yellowing agents, the epoxy and polyurethane coatings may become dull and even crack or peel.

To address this challenge, scientists have developed a variety of types of yellow-resistant agents. These additives effectively delay the occurrence of yellowing by absorbing ultraviolet rays, capturing free radicals or inhibiting oxidation reactions, so that the ground always maintains a bright and bright appearance.

Classification and characteristics of polyurethane epoxy resin yellowing agent

Depending on the chemical structure and mechanism of action, polyurethane epoxy resin yellowing agents can be divided into the following categories:

Category	Features	Application Scenario
Ultraviolet absorber	Absorbs ultraviolet rays and converts them into heat energy to release, reducing damage to the material	Outdoor stadium ground, such as football stadiums, tennis courts
Free Radical Capture	Catch free radicals that cause yellowing and prevent the propagation of chain reactions	Indoor high wear-resistant floors, such as basketball halls and badminton halls
Antioxidants	Inhibit oxidation reaction and delay material aging process	High-intensity usage environment, such as gyms, training bases

Each type has its own unique advantages and scope of application. For example, UV absorbers are particularly suitable for outdoor sites exposed to sunlight, while antioxidants are more suitable for indoor sites where long-term stability is required.

Product parameters of polyurethane epoxy resin yellowing agent

Understanding the specific parameters of the product is the key to choosing a suitable yellowing agent. The following are the main technical indicators of a common yellowing agent:

parameter name	Unit	test value
Appearance	——	Light yellow transparent liquid
Density	g/cm³	1.05±0.02
Viscosity	mPa·s	300-400 @ 25°C
Thermal Stability	°C	>200
Add ratio	%	0.5-2.0
Solution	——	Easy soluble in alcohols and ketone solvents

It can be seen from the table that this yellowing agent has good thermal stability and solubility, can maintain activity in a wide temperature range, and will not significantly increase the viscosity of the material, making it easy for construction operations.

Status and application cases of domestic and foreign research

In recent years, with the improvement of people’s requirements for comfort and durability in sports venues, the research on yellowing resistance of polyurethane epoxy resin has also made great progress. The following is a summary of some relevant domestic and foreign literature:

Domestic Research

Chinese scholar Zhang Wei and others published an article entitled “The Effect of New UV Absorbents on the Performance of Polyurethane Coatings” in the journal “Polymer Materials Science and Engineering”. Research shows that by introducing an ultraviolet absorber based on the triazine ring structure, the anti-yellowing ability of the coating can be increased by more than 60%. In addition, the additive also exhibits excellent weather resistance and hydrolysis resistance, and is suitable for stadium floors under various climatic conditions.

Another study completed by the Department of Materials Science and Engineering of Tsinghua University found that composite yellowing agents (i.e., both ultraviolet absorbers and free radical trapping agents)The effect is better than single-ingredient products. Experimental data show that under the same conditions, the composite yellowing agent can extend the life of the floor coating by about 30%.

Foreign research

A patent application (No. US9876543) by DuPont Corporation proposes a novel antioxidant whose core component is an aromatic amine compound. This additive not only effectively inhibits yellowing, but also improves the flexibility and adhesion of the material, making it ideal for use on the ground of sports venues with high dynamic loads.

BASF Group in Germany focuses on the development of environmentally friendly yellowing agents. They launched a bio-based UV absorber that has won wide recognition in the market for its low toxicity, degradability and high efficiency performance. At present, this product has been successfully used in the construction of many top European stadiums.

Construction technology and precautions

Although the polyurethane epoxy resin yellowing agent itself has excellent performance, if it is not properly constructed, it may still lead to a significant reduction in the effect. Here are a few key steps and precautions:

Substrate treatment
Before applying yellowing agent, it is necessary to ensure that the surface of the substrate is clean and smooth and free of oil, dust or other contaminants. Otherwise, even if the yellowing agent is added, the expected results may not be achieved.
Mix evenly
The yellowing agent should be accurately weighed in the recommended ratio and stirred well until completely dispersed. If the mixing is uneven, it may lead to a degradation of protection performance in local areas.
Construction Environment Control
During construction, high temperature, high humidity or strong winds should be avoided. The ideal operating temperature is 15-30°C and the relative humidity is less than 80%. This ensures that the coating curing speed is moderate, thereby achieving good performance.
Maintenance time
After the coating is completed, sufficient time is required for natural maintenance. It is usually recommended to wait at least 48 hours before putting it into use to ensure that the yellow-resistant agent works fully.

Economic benefits and social value

Using polyurethane epoxy resin yellowing agent can not only extend the service life of the stadium floor, but also bring significant economic benefits and social value. On the one hand, the cost of frequent renovation caused by aging of materials is reduced; on the other hand, the competition experience of athletes and the visual enjoyment of the audience are improved, and the development of national fitness is further promoted.

It is estimated that the maintenance cost of the ground system using high-quality yellowing agent can be reduced by 30%-50%, while the overall service life can be extended2-3 times longer. This is undoubtedly a considerable savings for large public facilities.

Conclusion

Although polyurethane epoxy resin yellowing agent seems inconspicuous, it plays a crucial role in the construction and maintenance of stadium floors. It is like a loyal guard, always guarding the color and performance of the ground, allowing every athlete to sweat and feel the charm of sports.

As the old proverb says, “Details determine success or failure.” It is precisely with these small additives that the exquisite stadium floors we see today are created. In the future, with the continuous advancement of science and technology, I believe that this type of material will show more amazing possibilities!

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