The Effect and Applications of Recure 308 Hardener in Epoxy Systems

In this article, we discuss why hardeners used in epoxy resins directly affect the performance of the final product. We will particularly address important advantages such as high mechanical strength and chemical resistance offered by modified cycloaliphatic polyamine-based hardeners like Recure 308 in industrial floor coatings.

Epoxy resins are preferred in a wide range of applications such as construction, automotive, marine, composites and industrial floor coatings due to their chemical resistance, mechanical strength and aesthetic appearance.

Epoxy hardeners are polyfunctional compounds that can react with the epoxy group. They are considered the most important component that improves the chemical resistance, UV resistance and mechanical strength of the final product. For curing epoxy systems, the resin and hardener must undergo a chemical reaction. Mixing is an important step in epoxy use. For the chemical reaction to proceed smoothly, the resin and hardener must be distributed homogeneously in the mixture.

Epoxy Hardener Properties

One of the most critical components determining performance in epoxy systems is the hardener used for curing. Hardener selection directly affects the curing time of the epoxy resin, the mechanical properties of the final product and its chemical resistance. In this context, the role of modified cycloaliphatic polyamine-based hardeners such as Recure 308 in industrial applications is of considerable importance.

Epoxy hardeners can be developed with different properties and suitable for various application areas depending on the base amines used and modification methods. It is known that in addition to cycloaliphatic amines, aromatic, aliphatic amines and polyamines are used in hardener production. Modified cycloaliphatic polyamine-based hardeners in particular offer high mechanical strength, chemical resistance and aesthetic surface properties. Recure 308 is one of the leading examples of this hardener type, developed at Reaksiyon Kimya R&D Centre and has found wide application in high-performance demanding applications.

Recure 308, obtained through modification of the cycloaliphatic amine structure, has been endowed with superior properties such as strong adhesion and long-lasting durability. These properties make Recure 308 safely usable even under harsh industrial conditions. For example, in epoxy systems used in industrial floor coatings, the superior mechanical strength and chemical resistance offered by Recure 308 are of critical importance for long-term performance.

Technical Properties and Performance Values

Recure 308 technical properties provide superior performance to epoxy systems in a wide range of applications. The low viscosity of the hardener ensures perfect mixing with the resin, optimizing the curing process. This increases the homogeneity and mechanical strength of the final product. Additionally, Recure 308 provides fast curing even at low temperatures, which offers a major advantage especially when working in cold climates. Recure 308 hardener technical data are provided in Table 1.

Table 1

Products formulated with Recure 308 exhibit high tensile and compressive strength. This property offers an important advantage in applications such as floor coatings requiring heavy load-bearing capacity. Additionally, the impact resistance provided by Recure 308 provides superior protection against mechanical shocks, supporting the long-term durability of industrial coatings. Recure 308 mechanical strength results are shown in Figure 1.

Recure 308-type hardeners can demonstrate high resistance to various chemicals. This chemical resistance enables epoxy systems to be safely used in demanding environments such as industrial floor coatings. Coatings formulated with Recure 308 are highly durable and resistant to caustics such as 50% hydrochloric acid, 50% citric acid and 40% sodium hydroxide, as well as industrial chemicals such as diesel, formaldehyde and sulphuric acid. These properties support durability for epoxy systems, providing protection against chemical effects and offering long-term use possibilities. Chemical resistance tests are detailed in Figure 3.

Application Areas

Recure 308 is a hardener with the flexibility to be used in a wide range of applications. Industrial floor coatings, primers, waterproofing systems and high-performance protective coatings are the main areas where Recure 308 is used. Recure 308 offers significant advantages particularly in applications requiring chemical resistance and mechanical strength. For example, in industrial floors exposed to heavy traffic, epoxy coatings formulated with Recure 308 provide long-term performance and durability. Additionally, thanks to the low viscosity of Recure 308, flawless spreading is ensured during application and a homogeneous surface is obtained. This is an ideal option for applications requiring aesthetically perfect surfaces. Both because it provides rapid curing at low temperatures and because it accelerates the application process, reducing labor costs.

Conclusion

Hardener selection in epoxy systems is a critical factor that directly affects the performance of the final product. Recure 308, through its modified cycloaliphatic polyamine-based structure, offers high mechanical strength, chemical resistance and aesthetic surface properties, making it an ideal option in industrial applications. From industrial floor coatings to waterproofing systems, the performance advantages offered by Recure 308 provide long-term durability and reliability across a wide range of applications. Recure 308 stands out as a reliable and high-performance option for professionals seeking innovative solutions in epoxy systems.