Alicyclic Epoxy Organosilicon Additive: Fast Curing, High Stability, Strong Weather Resistance - A New Choice for High-Performance Materials Changfu Chemical

Changfu Chemical’s innovative alicyclic epoxy siloxane product series represents a significant breakthrough in the field of functional additives for advanced material formulations. Through precise molecular architecture—featuring tailored functionalities and controlled silicon content—these additives unlock exceptional performance characteristics that address the growing demands of modern industry. The core innovation lies in the direct bonding of the epoxy group to an alicyclic (cyclohexyl) ring. This structural configuration yields a denser and more rigid molecular framework, which in turn delivers markedly higher reactivity and accelerated curing kinetics under cationic photoinitiation. Consequently, materials incorporating these additives exhibit outstanding thermal stability, superior electrical insulation, robust weatherability, and exceptional resistance to ultraviolet radiation. Functionally versatile, the series serves as cationic epoxy silicone additives, epoxy silicone curing agents, and surface modifiers for pigments and fillers, thereby catering to a wide spectrum of sophisticated application requirements.

Product Characteristics: A Synergy of Enhanced Properties

• Cross-linking and Curing Performance:

  These additives facilitate the formation of a high-density, three-dimensional cross-linked network. This structure effectively minimizes polymerization shrinkage and internal stress, enhancing dimensional stability and durability. Compatible with both UV and thermal curing regimes, the cured material masterfully combines the desirable attributes of organosilicons—such as exceptional weather resistance and low surface tension—with the high adhesive strength and hardness characteristic of epoxy resins.

• Toughening and Stress Buffer Capacity:

  The incorporation of flexible organosilicon segments within the inherently rigid epoxy network introduces a vital toughening mechanism. This molecular design enables efficient absorption and dispersion of interfacial and internal stresses, significantly improving the impact resistance and crack propagation inhibition of the final coating or composite. Furthermore, it promotes stronger adhesion to various substrates, ensuring long-term integrity.

• Superior Thermal Resistance and Electrical Insulation:

  A synergistic effect arises from the high bond-energy silicon-oxygen backbone and the saturated alicyclic rings. This combination ensures that materials retain exceptional dielectric properties and structural stability even under prolonged exposure to elevated temperatures, making them ideal for demanding electronic and high-temperature applications.

Series Portfolio: Precision-Engineered for Specific Functions

Changfu Chemical’s portfolio is meticulously segmented by functionality, allowing formulators to select the optimal additive for their specific system needs.

• Monofunctional Additives – Ideal for Reactive Diluents and Chain Terminators

Changfu^® EX24 (2-(3,4-epoxycyclohexyl)ethyl bis(trimethylsiloxy)methylsilane):

  Characterized by high reactivity and excellent compatibility with organic matrices, this product effectively reduces viscosity in high-viscosity epoxy systems without compromising performance. It imparts enhanced weatherability and maintains flexibility at low temperatures.

• Difunctional Additives – Effective as Chain Extenders and Tougheners

Changfu^® BEX24 (3,5-bis[2-(3,4-epoxycyclohexyl)ethyl]-1,1,1,3,5,7,7,7-octamethyltetrasiloxane):

  Offers an optimal balance of high reactivity and molecular flexibility. It provides outstanding weather resistance and chemical stability while delivering significant toughening and internal plasticization effects.

Changfu^® BEX12 (1,3-bis[2-(3,4-epoxycyclohexyl)ethyl]-1,1,3,3-tetramethyldisiloxane):

  Boasts high reactivity and crosslinking efficiency, demonstrating excellent compatibility with conventional epoxy resins for seamless integration.

Changfu^® BEX12T (1,5-bis[2-(3,4-epoxycyclohexyl)ethyl]-1,1,3,3,5,5-hexamethyltrisiloxane):

  Features rapid curing speed, low surface tension, and high flexibility. Its good solubility in organic solvents facilitates easy processing and formulation.

• Trifunctional Additives – Designed for Balanced Cross-linking and Flexibility

Changfu^® EX3M (Tris[2-(3,4-epoxycyclohexyl)ethyldimethylsiloxy]methylsilane):

  Tailored for medium-viscosity systems, this additive provides increased crosslink density without inducing excessive brittleness. It contributes to low shrinkage, very low surface tension, excellent dielectric properties, and sustained weatherability.

• Tetrafunctional Additives – High-Strength Crosslinking Agents

Changfu^® EXC4 (2,4,6,8-tetramethyl-2,4,6,8-tetraepoxycyclohexylethyl cyclotetrasiloxane):

  As a high-functionality crosslinker, it enables the creation of ultra-dense polymer networks. This dramatically reduces polymerization shrinkage and internal stress, yielding materials with exceptional mechanical strength and stability, suitable for both UV and thermal curing processes.

Broad-Spectrum Application Domains

The unique properties of Changfu’s alicyclic epoxy siloxane additives make them invaluable across multiple high-tech industries:

• High-Performance Coatings:

  They are pivotal in formulating UV-curable coatings with enhanced surface properties, superior outdoor weatherable coatings for automotive and aerospace applications, durable plastic and coil coatings, and long-life anti-corrosion coatings that withstand harsh environmental conditions.

• Electronics and Electrical Materials:

  These additives are critical components in advanced encapsulants and packaging materials for integrated circuits (ICs) and LEDs, where reliability under thermal cycling is paramount. They are also used in insulating impregnating varnishes and high-performance electronic adhesives, ensuring lasting dielectric strength and protection.

• Advanced Composite Materials:

  Acting as tougheners and interface modifiers in carbon fiber and glass fiber reinforced composites, they improve interlaminar shear strength, impact resistance, and overall durability, extending the service life of composite structures.

• Adhesives and Sealants:

  They enable the production of high-reliability, structural adhesives and sealants that offer exceptional bond strength, resilience to thermal shocks, and outstanding resistance to moisture, UV radiation, and chemical exposure.

Commitment to Collaborative Innovation

  At Changfu Chemical, we understand that material performance is ultimately defined by the specific application context. Our products provide a powerful platform for innovation, and their full potential is best realized through tailored formulation. We are committed to partnering with our clients to overcome material challenges and achieve breakthrough performance.

  Our dedicated technical support team is available to provide in-depth product information, formulation guidance, and customized solutions. We welcome the opportunity to collaborate and explore how our alicyclic epoxy organosilicon additives can elevate your next-generation material projects.

Note: The performance and effects described are based on controlled laboratory evaluations. Optimal results in end-use applications depend on specific formulation, processing conditions, and environmental factors.

Contact Us for Technical Partnership:

Mobile: (+86) 181-6277-0058

Email: sales@cfsilanes.com

Key words: Alicyclic epoxy siloxane;  Cationic epoxy silicone additives, Epoxy silicone curing agents; Surface modifier.