High rebound castor anti-yellowing agent: stability and durability under extreme conditions
In industrial and daily life, casters act as an important auxiliary device, carrying the mobile tasks from office chairs to large industrial machinery. However, over time, caster materials may age due to environmental factors, one of the notable problems is “yellowing.” This phenomenon not only affects the appearance of the product, but may also weaken its physical properties. To solve this problem, scientists have developed a high rebound caster anti-yellowing agent, an additive that can effectively delay or even prevent the occurrence of yellowing. This article will conduct in-depth discussion on the stability and durability of high-resistance castor anti-yellowing agent under extreme conditions, and analyze its working principle, applicable scenarios and future development trends.
1. What is a high rebound caster anti-yellowing agent?
High rebound caster anti-yellowing agent is a chemical additive specially used to prevent caster materials from yellowing. It is usually added to a rubber or plastic substrate and is well mixed with the raw material during the manufacturing process to form a uniform protective layer. This protective layer can absorb UV rays, inhibit oxidation reactions, and reduce the impact of thermal degradation, thereby extending the service life of the caster and maintaining its original color and elasticity.
The working principle of anti-yellowing agent
Anti-yellowing agents mainly play a role through the following mechanisms:
- Ultraviolet absorption: Some anti-yellowing agents contain UV absorbers components that can capture and convert harmful UV energy and convert them into harmless heat to distribute them.
- Free Radical Scavenge: Antioxidant ingredients in anti-yellowing agents can capture and neutralize free radicals triggered by ultraviolet light or high temperatures, preventing them from further destroying polymer chains.
- Thermal Stability: Some anti-yellowing agents can also provide additional thermal stability and reduce the decomposition rate of the material in high temperature environments.
These features allow high rebound casters to maintain good appearance and performance even under prolonged exposure to sunlight, high temperatures or other harsh conditions.
2. Product parameters of high rebound castor anti-yellowing agent
To better understand the specific performance of high-resistance castor anti-yellowing agent, we can evaluate it through the following key parameters:
| parameter name | Description | Testing Standards |
|---|---|---|
| UV Protection Index | Measure the ability of anti-yellowing agents to absorb ultraviolet rays. The higher the value, the better the protection effect. | ASTM D4799 |
| Heat resistance | The ability to maintain stability in high temperature environments is usually expressed in the temperature range | ISO 188 |
| Antioxidation capacity | The ability to inhibit oxidation reactions is usually expressed in time or cycle times | ASTM D1692 |
| Compatibility | The degree of compatibility with different polymer substrates directly affects the uniformity and stability of the final product | Customized experimental methods |
| Add ratio | The recommended amount of anti-yellowing agent added to the substrate is usually expressed as weight percentage | Adjust according to specific application scenarios |
These parameters together determine the performance of anti-yellowing agents in practical applications. For example, a high-quality anti-yellowing agent may have a high UV protection index and heat resistance, but if its compatibility is not good, it may lead to problems such as layering or cracks inside the material.
3. Stability and durability under extreme conditions
1. Extreme temperature environment
Whether it is extreme cold or hot, temperature changes will have a profound impact on caster materials. In low temperature environments, the material may become brittle and hard, increasing the risk of fracture; in high temperature environments, the material may easily soften or even melt, accelerating the aging process. High rebound caster anti-yellowing agents can maintain excellent performance in the range of -40°C to 150°C by enhancing the thermal stability of the material (depending on the type of anti-yellowing agent used).
Experimental Cases
A research team simulated the use scenarios of the Antarctic scientific research station and the Middle East desert area, and tested the performance of high rebound casters under -50°C and 60°C conditions respectively. The results show that the casters that have been subjected to yellowing have no significant color changes or physical performance declines for up to one year.
2. Strong UV irradiation
Ultraviolet rays are one of the main reasons for yellowing of the material. Casters that are exposed to the sun for a long time, especially equipment used outdoors, are more susceptible to ultraviolet rays. The high-resilience castor anti-yellowing agent significantly reduces the speed of photodegradation by efficiently absorbing ultraviolet rays.
Data comparison
The following table shows the performance differences between ordinary casters and casters with anti-yellowing agents after 1000 hours of ultraviolet irradiation:
| Indicators | Ordinary Casters | Castors with anti-yellowing agent |
|---|---|---|
| Color change (ΔE value) | 12.3 | 2.1 |
| Tension strength retention rate | 65% | 92% |
| Retention of elongation at break | 58% | 87% |
It can be seen that the presence of anti-yellowing agent greatly improves the durability of casters in ultraviolet environments.
3. Chemical Corrosion Challenge
In addition to natural environmental factors, casters may also face erosion from various chemicals, such as acids, alkalis or solvents. These substances can destroy the molecular structure of the material, which in turn causes yellowing or deterioration of performance. The high-resilience castor anti-yellowing agent effectively resists the invasion of external chemical substances by building a chemical barrier.
References
According to a research paper published in Polymer Degradation and Stability, a new anti-yellowing agent can maintain an initial performance of more than 95% after being soaked in a 10% sodium hydroxide solution, much higher than 60% of the untreated samples.
IV. Application scenarios and market prospects
The application range of high rebound castor anti-yellowing agent is very wide, covering many fields such as industry, commercial and household use. The following are several typical application scenarios:
- Industrial transportation equipment: For example, forklifts, trolleys, etc., it requires excellent wear resistance and anti-aging ability in high-strength working environments.
- Medical Facilities: Hospital beds, wheelchairs and other equipment require casters not only to be durable, but also to meet strict hygiene standards.
- Outdoor furniture: Garden tables, chairs, parasol bases and other products need to resist the damage caused by sun and rain.
- Home Appliances: Consumer products such as vacuum cleaners, suitcases, etc. also need to rely on anti-yellowing technology to improve aesthetics and service life.
As consumers' requirements for product quality continue to increase, the demand for anti-yellowing agents is expected to continue to grow. It is predicted that the global anti-yellowing agent market size will reach billions of dollars in the next five years, with an annual compound growth rate of more than 6%.
5. Future development trends
Although current high rebound caster anti-yellowing agents have shown excellent performance, researchers are still exploring more advanced solutions. Here are a few directions worth paying attention to:
- Multi-function integration: Future anti-yellowing agents may also have antibacterial and anti-mold functions to meet more complex usage needs.
- Green and Environmental Protection: With the increasing awareness of environmental protection, the development of biodegradable or low-toxic anti-yellowing agents will become an important topic.
- Intelligent design: Dynamic adjustment of anti-yellowing agent performance is achieved through the introduction of nanotechnology and intelligent responsive materials.
In short, high rebound caster anti-yellowing agents are gradually changing our lives as one of the important achievements of modern materials science. Whether it is stability under extreme conditions or persistence in daily use, it shows great potential and value. As the saying goes, “Details determine success or failure”, and anti-yellowing agents are the key to making details more perfect.
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