NEWS
Mechanism of Action and Applicable Fields of Crosslinking Agents
Release time:
2026-01-30
In the production process of printed circuit boards (PCBs) and their core copper-clad laminates, the role of the crosslinking agent is not only limited to chemical modification but also provides reliable engineering assurance for the entire manufacturing process. When facing the instantaneous high-temperature impact exceeding 260°C in lead-free soldering processes, whether the substrate will experience "board cracking" or "delamination" largely depends on the curing quality of the crosslinking agent in the formulation.
In the production process of printed circuit boards (PCBs) and their core copper-clad laminates, Crosslinking Agent its role is not limited to chemical modification but also provides reliable engineering support for the entire manufacturing process. When facing the instantaneous high temperature impact exceeding 260°C in lead-free soldering processes, whether the substrate will experience "board cracking" or "delamination" largely depends on the curing quality of the crosslinking agent in the formulation. By building strong cohesion within the resin system, the crosslinking agent becomes the core pivot for maintaining the structural integrity of multilayer boards and is a key technical variable for achieving high yield.
In practical applications, the crosslinking agent optimizes the mechanical properties of PCBs by regulating the coefficient of thermal expansion (CTE) of the material. Since multilayer PCBs are laminated from metal copper foil and resin substrate layers, the thermal expansion mismatch between the two is the main cause of via cracking. High-performance Crosslinking Agent can significantly limit the expansion of the resin when heated by forming a dense network structure, making the substrate's CTE closer to that of the copper foil.
This performance balance greatly reduces interfacial stress during thermal cycling, ensuring the signal conduction reliability of high aspect ratio vias during long-term service. For electronic hardware such as servers and data centers that require long-term stable operation, Crosslinking Agent the technical level directly defines the upper limit of product reliability.
In addition, the application of latent crosslinking agents further broadens the process window for copper-clad laminate production. During the room temperature storage phase, these crosslinking agents remain chemically inert, ensuring the viscosity stability of the adhesive and the long-term storage of the prepreg; during the hot pressing molding phase, they instantly release activity, inducing the resin system to cure quickly and uniformly. This "temperature-controlled triggering" characteristic not only reduces material loss during production but also improves interlayer bonding of multilayer boards by optimizing hole-filling rheology. Desytek has conducted in-depth research on the synergistic effects of crosslinking agents and hydrocarbon resins, coupling agents Through systematic formulation modification schemes, it has solved the brittleness and adhesion problems of high-performance boards during precision processing, helping the PCB industry evolve towards higher precision and stronger stability.
NEWS
As 5G‑A, 6G communications, and AI‑driven high‑performance servers surge forward, high‑frequency, high‑speed copper-clad laminates (CCL) and advanced semiconductor packaging are confronting unprecedented signal‑loss challenges. To achieve ultra‑low loss at GHz‑ and even THz‑range frequencies, the molecular‑level design of materials is of paramount importance. Among these considerations, “hydrocarbon resins”—the key metrics for assessing a material’s non‑polar purity and dielectric performance—are emerging as pivotal components in formulation development.
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Why can’t polymer materials do without crosslinking agents?
In the formulation development of polymer materials, rubbers, coatings, and adhesives, crosslinking agents are widely recognized as the core functional components that impart a “second life” to the material. Without crosslinking, the base resin exhibits linear or branched molecular chains, which readily undergo slippage and deformation under heat or mechanical stress, potentially leading to irreversible melting.
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In the modification of polymeric materials, the fabrication of composite materials, and the formulation of coatings and adhesives, coupling agents serve as a “chemical bridge” that links inorganic and organic interfaces, underscoring their indispensable importance.
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Chemical Classification, Fire‑Retardant Mechanisms, and Core Applications of Flame Retardants
In our daily lives, plastic products, electronic and electrical devices, automotive interiors, and towering skyscrapers are ubiquitous. These modern materials, which have greatly enhanced the convenience of our everyday existence, often share a critical physical hazard: they are highly flammable. To mitigate fire risks at their source and safeguard lives and property, a class of fine chemical additives known as flame retardants has been developed.
2026-06-16
With the explosive deployment of 5G‑A, 6G communications, and AI computing centers, the electronic information industry has set unprecedentedly stringent requirements for data transmission rates and signal loss. At the hardware level, copper-clad laminates (CCL) and advanced packaging materials—key carriers of electrical signals—are undergoing a profound materials revolution. Against this backdrop, hydrocarbon resins, owing to their exceptionally superior dielectric properties, have firmly established themselves as a critical enabler of next‑generation high‑frequency, high‑speed electronic substrates.
2026-06-12
The Function and Application of Crosslinking Agents
In polymer materials, the rubber industry, coatings, and adhesive formulations, crosslinking agents play a decisive “turning stone into gold” role. Polymers that have not undergone crosslinking typically exhibit softness, are easily stretched and deformed, and struggle to withstand the corrosive effects of solvents and high temperatures. By chemically tuning the system with crosslinking agents, materials can achieve remarkable improvements in performance.
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