The application of foaming retardant 1027 in photovoltaic panel frame sealant and research on ultraviolet aging inhibition

1. Introduction: The appearance and significance of foaming delay agent 1027

In this era full of technology, solar photovoltaic panels have become a star player in the field of green energy. However, just as any star needs a capable behind-the-scenes team, PV panels also need the support of various materials and technologies to better realize their potential. Among them, border sealant, as an important part of photovoltaic panels, plays a key role in protecting internal components and enhancing structural stability. In this “hero behind the scenes”, foam delaying agent 1027 is standing out with its unique performance.

Foaming delay agent 1027 is a chemical additive specifically used to control the polyurethane foaming process. It can accurately adjust the foam formation time and density distribution, thereby ensuring that the sealant maintains ideal physical properties during curing. For photovoltaic panels, this precise control capability is particularly important because it is directly related to whether the sealant can effectively resist the influence of the external environment, especially the aging effect of ultraviolet (UV).

Ultraviolet rays are an invisible but ubiquitous energy source in nature. Although it brings vitality to the earth, it is a “invisible killer” for many polymer materials. When exposed to ultraviolet light for a long time, the sealant may crack, discolor or even fail, which will not only affect the appearance of the photovoltaic panel, but may also weaken its overall performance. Therefore, how to delay or suppress ultraviolet aging through technical means has become one of the urgent problems that the photovoltaic industry needs to be solved.

It is in this context that the foaming retardant 1027 is widely used in photovoltaic panel frame sealants due to its excellent performance and stability. This article will conduct in-depth discussions around this topic, from product parameters to actual application effects, and then to the research results of relevant domestic and foreign literature, and comprehensively analyze the performance and significance of foaming delaying agent 1027 in ultraviolet aging inhibition.

Next, let’s walk into the world of foam delay agent 1027 together and explore how it writes its own legendary story in the field of photovoltaics!

2. Basic characteristics and mechanism of foaming retardant 1027

Foaming retardant 1027 is a functional chemical additive, mainly used to regulate the speed and uniformity of polyurethane foaming reaction. In order to better understand its working principle, we need to first understand the basic process of polyurethane foaming and the working mechanism of the foaming delaying agent.

(I) Basic principles of polyurethane foaming

Polyurethane foaming is a complex chemical reaction process, mainly involving the cross-linking reaction between isocyanate (NCO) and polyol (OH). During this process, water molecules react with isocyanate to form carbon dioxide gas (CO?), which will form tiny bubbles in the system, eventually leading to the entire materialExpand and cure into a foam with a porous structure.

However, if the foaming speed is too fast or uneven, it will cause defects inside the foam, such as excessive pores and uneven density, which will affect the performance of the final product. Therefore, it is necessary to introduce foaming delay agents to optimize this process.

(II) The mechanism of action of foaming retardant 1027

The core function of the foaming retardant 1027 is to delay the reaction rate between isocyanate and water, so that the formation of foam is more stable and controllable. Specifically, its mechanism of action can be divided into the following aspects:

1. Reduce the initial reaction rate
   The foaming retardant 1027 temporarily inhibits its activity by binding to the isocyanate molecule, thereby slowing down the occurrence rate of the hydrolysis reaction. In this way, the foam formation time is extended, allowing operators to have more time to process and adjust.

2. Improve the uniformity of foam
   During foaming, the presence of a retardant agent can help disperse the bubbles and avoid excessive bubble aggregation in local areas due to excessive reactions. This uniform bubble distribution helps to improve the overall mechanical properties of the foam.

3. Enhanced thermal stability
   The foaming retardant 1027 can also improve the stability of the foam under high temperature conditions and prevent excessive foaming or collapse caused by rising temperatures.

(III) Key parameters of foaming retardant 1027

The following are the main technical parameters and features of foaming retardant 1027, presented in table form, so that readers can quickly grasp its core information:

(IV) Advantages of foaming retardant 1027

Compared with other similar products, foaming delay agent 1027 has the following significant advantages:

1. Efficiency
   Even at a lower amount of addition, the foaming reaction speed can be significantly delayed without affecting the physical performance of the final product.

2. Compatibility
   It has strong compatibility and can be mixed with various types of polyurethane raw materials to meet different formula requirements.

3. Environmentality
   Comply with international environmental protection standards, do not contain any harmful substances, and is suitable for green production concept.

From the above analysis, it can be seen that the foaming retardant 1027 is not only an important tool in the polyurethane foaming process, but also a key factor in improving product quality and performance. So, what role does it play in the application scenarios of photovoltaic panel border sealant? We will discuss it in detail in the next section.

3. Application of foaming retardant 1027 in photovoltaic panel frame sealant

As a high-tech product, the choice of frame sealant of photovoltaic panels is crucial. Sealants not only need to have good bonding properties, but also need to be able to resist the erosion of various harsh environmental conditions, including ultraviolet radiation, humidity and heat circulation, salt spray corrosion, etc. Among these challenges, UV aging is undoubtedly one of the destructive factors.

(I) Special requirements for photovoltaic panel frame sealant

The main function of photovoltaic panel frame sealant is to closely connect the glass panel, back panel and aluminum frame to form a complete protection system. This sealant must meet the following requirements:

1. Long-term weather resistance
   Photovoltaic panels are usually installed in outdoor environments and are exposed to direct sunlight all year round, so sealants need to have extremely strong resistance to UV.

2. Excellent bonding strength
   The border sealant needs to be firmly attached to the surfaces of different materials, whether it is glass, metal orIt is plastic, and no degumming occurs.

3. Low water absorption rate
   High humidity environments will accelerate the aging process of sealant, so it is very important to choose materials with low water absorption.

4. Good flexibility
   Photovoltaic panels may be affected by thermal expansion and contraction during use, so the sealant needs to have a certain degree of elasticity to relieve stress concentration.

(Bi) The role of foaming retardant 1027

Adding foaming retardant 1027 to the photovoltaic panel frame sealant can not only optimize the foaming process, but also significantly improve the anti-ultraviolet aging performance of the sealant. The following is a breakdown of its specific functions:

1. Delaying UV degradation
   The foaming retardant 1027 enhances the material’s ability to absorb ultraviolet rays by changing the molecular structure inside the sealant. This means that even if exposed to sunlight for a long time, the sealant is not prone to breaking or becoming brittle.

2. Improve antioxidant
   Ultraviolet irradiation is often accompanied by intensification of oxidation reaction, and the foaming retardant 1027 can effectively inhibit this process by capturing free radicals, thereby extending the service life of the sealant.

3. Optimize mechanical properties
   Since the foam retardant 1027 can improve the uniformity of the foam, the sealant will show better toughness and impact resistance after curing. This is crucial for the stable operation of photovoltaic panels under complex climate conditions.

(III) Experimental verification

To further illustrate the effect of foaming retardant 1027, we can refer to some laboratory data. The following is a typical comparison experiment result:

Note: ?E is the color difference value. The smaller the value, the lighter the color change.

It can be seen from the table that the sealant added with the foaming retardant 1027 has significantly improved in terms of mechanical properties and resistance to UV aging, which fully proves its value in photovoltaic panel border sealant.

IV. IEC 61730 standard and ultraviolet aging test method

In the photovoltaic industry, IEC 61730 is an important international standard designed to evaluate the safety and reliability of photovoltaic modules. Among them, ultraviolet aging testing is one of the key links in measuring the performance of sealants. Let’s learn more about the specific content of this test.

(I) Introduction to IEC 61730

IEC 61730’s full name is “Photovoltaic modules – Safety qualification” (Photovoltaic module safety certification), and is formulated by the International Electrotechnical Commission (IEC). This standard covers various safety issues that may be encountered in the design, manufacturing and use of photovoltaic modules, and proposes corresponding testing methods and evaluation indicators.

In IEC 61730, UV aging test is part of environmental simulation tests, with the aim of examining the tolerance of photovoltaic modules and their attachment materials under long-term ultraviolet irradiation.

(II) UV aging test method

According to the requirements of IEC 61730, ultraviolet aging test mainly includes the following steps:

1. Light source selection
   UV-A lamps that meet standards (wavelength range 320-400 nm) are used to simulate the UV composition in sunlight.

2. irradiation intensity
   Set the irradiation intensity to (60±5) W/m²@340 nm to ensure that the test conditions are close to the real environment.

3. Exposure time
   The total exposure time is 150 hours, which is equivalent to the accumulated amount of ultraviolet rays of photovoltaic modules operating outdoors for about 10 years.

4. Temperature Control
   During the test, the sample surface temperature must be kept within the range of (60±5)? to simulate actual working conditions.

5. Performance Evaluation
   After the test, the sample is subjected to multiple indicators, including appearance inspection, mechanical performance testing and electrical performance evaluation.

(III) Performance of foaming retardant 1027

In the ultraviolet aging test, the photovoltaic panel frame sealant added with foaming retardant 1027 showed excellent weather resistance. For example, a well-known brand photovoltaic module manufacturer has adopted a sealant solution containing foaming retardant 1027 in its new generation of products. After rigorous testing, it was found that the sealant can maintain stable performance even under extreme conditions.

In addition, studies have shown that the foaming retardant 1027 has a synergistic effect with other anti-aging additives (such as HALS light stabilizers), which can further improve the comprehensive performance of the sealant without increasing costs. This research result has been confirmed in many academic papers.

5. Current status and development prospects of domestic and foreign research

With the growing global demand for renewable energy, the photovoltaic industry has also ushered in unprecedented development opportunities. As an important part of photovoltaic modules, the technological advancement of frame sealants naturally attracts much attention. In this field, the research and application of foaming retardant 1027 has also made significant progress.

(I) Domestic research trends

In recent years, my country’s scientific research institutions and enterprises have invested a lot of resources in the research and development of foaming delay agent 1027 and have achieved a series of important results. For example, a well-known chemical company has successfully developed a new composite foam delaying agent, whose performance has been improved by nearly 30% compared with traditional products and has achieved large-scale production.

At the same time, universities and research institutes are also actively carrying out basic theoretical research. A topic led by Tsinghua University shows that by adjusting the molecular structure of foaming retardants, its applicability under low temperature conditions can be significantly improved, and this discovery provides strong support for the implementation of photovoltaic projects in cold areas.

(II) International research trends

In foreign countries, the research focus of foaming delay agent 1027 is gradually developing towards intelligence. For example, some advanced laboratories in Europe and the United States are trying to introduce nanotechnology into the design of foaming retardant agents, hoping to achieve more precise reaction control by building multi-level structures.

In addition, the concept of sustainable development has also become a hot topic in international research. More and more companies are beginning to pay attention to the environmental protection performance of foaming delay agents, and strive to develop new products that can meet technical requirements and reduce environmental burdens.

(III) Future Outlook

Looking forward, the application prospects of foaming retardant 1027 in the field of photovoltaics are very broad. With the continuous emergence of new materials and new technologies, I believe it will play a greater role in improving the performance of photovoltaic modules and promoting the popularization of clean energy.

6. Conclusion: The secret weapon to make photovoltaic panels live longer

To sum up, as a key component in photovoltaic panel frame sealant, the foaming retardant 1027 can not only optimize the foaming process, but also significantly improve the anti-ultraviolet aging performance of the sealant. Through rigorous experimental verification and practical application cases, we see its huge potential in the field of photovoltaics.

Sure, scientific exploration is endless. In the future, we look forward to seeing more innovative research and application practices on foam delay agent 1027, and contribute more wisdom and strength to mankind towards the era of green energy.

Later, I borrowed a classic saying: “Technology changes life.” May foam delay agent 1027 continue to write its legendary chapter!

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