NEWS
Flame Retardants mechanisms and application fields
Release time:
2026-02-02
As the global electronics industry enters the 5G and future 6G era, printed circuit boards (PCBs) are evolving toward higher-density integration and ultra-low loss. Against this backdrop, the requirements for flame retardants used in clad copper laminates (CCLs) have shifted from simply meeting fire-safety standards to achieving a dual breakthrough: electrical stability and environmental friendliness. In particular, the application of environmentally friendly, halogen-free flame retardants in high-performance substrates such as hydrocarbon resins has become a key benchmark for assessing the quality of high-end PCBs.
As the global electronics industry enters the 5G and future 6G era, printed circuit boards (PCBs) are evolving toward higher-density integration and ultra-low loss. Against this backdrop, the requirements for flame retardants in clad copper laminates (CCLs) have shifted from simply meeting fire-safety standards to achieving a dual breakthrough: ensuring electrical stability while also promoting environmental friendliness. In particular, for high-performance substrates such as hydrocarbon resins, environmentally friendly halogen-free... Flame retardant The application has become a core metric for evaluating the quality of high-end PCBs.
In the actual manufacturing process of PCBs, the role of flame retardants is first evident in their precise control over signal transmission loss. Traditional halogen-containing flame-retardant systems, due to their relatively large dipole moments, tend to significantly increase the material’s dielectric constant (Dk) and dielectric loss (Df), which can be fatal for high-frequency signal transmission. Therefore, modern high-performance Flame retardant The application focuses on non-polar phosphorus-nitrogen-based or inorganic mineral systems. These flame retardants not only deliver highly effective flame-retardant performance but also maintain the excellent dielectric properties of hydrocarbon resins, ensuring that PCBs continue to exhibit extremely low signal delay even under high-frequency alternating electric fields.
In addition, to meet the requirements of the etching process for fine PCB traces, Flame retardant Ultrafine particle size and high dispersibility become critically important. When combined with highly efficient crosslinking agents, flame retardants can be uniformly embedded into the resin network, thereby preventing edge chipping or delamination during drilling or electroplating processes.
From the perspective of long-term reliability, high-performance flame retardants must also exhibit outstanding resistance to damp heat. In PCB solder float tests and pressure cooker tests (PCT), the hydrolytic stability of flame retardants directly determines whether the insulation resistance (IR) of the board will significantly decline. High-quality, environmentally friendly flame retardants can form chemical bonds with coupling agents, creating a protective interface with hydrophobic properties that effectively prevent moisture from accumulating at the resin-filler interface and thus avoid the risk of ionic migration (CAF). In the future, as semiconductor packaging and high-end communication devices continue to raise their demands for thermal management and fire resistance, Flame retardant This technology will be deeply integrated with hydrocarbon resin technology and will continue to evolve toward ultra-low water absorption, high thermal stability, and micro- and nano-composite structures. This technological transformation not only aligns with the global trend of green development but also lays a solid material foundation for the safe operation of high-performance printed circuit boards.
Desytek New Materials We are a pioneering innovator in advanced optoelectronic materials. Our main products include: Hydrocarbon resin, high-frequency and high-speed hydrocarbon resin, crosslinking agent, coupling agent, reactive flame retardant You’re welcome to call our consultation hotline at 027-81801908 or 13971395740 (same number on WeChat). We’ll provide you with customized, professional services!
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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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.
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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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