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Stable performance of PI Thermosetting Film in high-temperature electrical insulation
In the demanding world of electronic and electrical engineering, materials used for insulation must meet rigorous standards for thermal stability, dielectric strength, and long-term reliability—especially in high-temperature environments. Among the most advanced solutions available today is Polyimide (PI) Thermosetting Film, a high-performance polymer film renowned for its exceptional thermal resistance, mechanical strength, and electrical insulation properties. As electronic devices continue to shrink in size while increasing in power density, the demand for reliable, high-temperature insulation materials has never been greater. Anhui Yanhe New Materials Co., Ltd., a leading innovator in functional film materials, has emerged as a key provider of PI Thermosetting Films that deliver stable performance under extreme operating conditions.
Founded in 2012, Anhui Yanhe New Materials Co., Ltd. operates from a 17-acre manufacturing and R&D base in the Guangde Economic Development Zone West. Over the past decade, the company has established itself as a trusted supplier of specialty labeling materials, functional adhesive tapes for the electronics industry, and advanced adhesive products for various functional film applications. With a strong focus on surface coating technologies and material customization, Yanhe New Materials is uniquely positioned to develop tailored solutions that meet the precise functional requirements of its global customer base. By combining industry-leading research and development capabilities with strategic collaborations with universities and scientific research institutions at home and abroad, the company is committed to delivering integrated functional material solutions that drive innovation across multiple high-tech sectors.
At the core of Yanhe’s advanced material portfolio is its PI Thermosetting Film—a critical component in high-temperature electrical insulation systems. Polyimide films are known for their ability to maintain structural and electrical integrity at temperatures exceeding 250°C, making them ideal for use in motors, transformers, printed circuit boards (PCBs), aerospace systems, and electric vehicles (EVs). Unlike conventional insulation materials such as polyester or epoxy, PI films do not melt or degrade easily, even under prolonged thermal stress. Instead, they exhibit excellent thermal oxidative stability, low outgassing, and high resistance to chemicals and radiation—qualities that are essential in mission-critical applications.
What sets Yanhe’s FPC Copper Foil apart is not only the inherent properties of polyimide but also the company’s expertise in surface modification and adhesive integration. Through proprietary coating technologies, Yanhe enhances the film’s adhesion to conductive substrates while preserving its dielectric performance. This is particularly important in multilayer electronic assemblies where insulation films must bond securely to copper foils or other conductive layers without compromising electrical isolation. The company offers both single-sided and double-sided adhesive variants, with customizable thicknesses ranging from 12.5μm to 125μm, allowing engineers to optimize thermal management and space utilization in compact designs.
One of the standout features of Yanhe’s PI Thermosetting Film is its stable performance across a wide temperature range. In high-temperature environments—such as those found in EV powertrains or industrial motor windings—many insulation materials begin to soften, crack, or lose dielectric strength. PI films from Yanhe, however, maintain consistent insulation resistance, low dielectric loss, and high breakdown voltage even after thousands of hours of continuous operation at elevated temperatures. This long-term reliability reduces the risk of electrical failure, extends product lifespan, and lowers maintenance costs—critical advantages in industries where safety and durability are paramount.
Moreover, Yanhe’s commitment to quality is reflected in its stringent manufacturing processes and testing protocols. Every batch of FPC Copper Foil undergoes rigorous evaluation for thermal stability, tensile strength, elongation at break, and surface uniformity. The company’s state-of-the-art facilities are equipped with advanced coating and curing lines that ensure precise control over film thickness and adhesive distribution, resulting in consistent, high-yield performance in real-world applications.
Beyond product excellence, Anhui Yanhe New Materials emphasizes collaboration and innovation. By working closely with academic and industrial partners, the company continuously explores new formulations and processing techniques to push the boundaries of polyimide film performance. Recent R&D efforts have focused on improving thermal conductivity for better heat dissipation, enhancing flame retardancy, and developing environmentally friendly production methods—aligning with global trends toward sustainability and energy efficiency.
The stable performance of PI Thermosetting Film in high-temperature electrical insulation is a testament to the advancements in modern material science. Anhui Yanhe New Materials Co., Ltd. stands at the forefront of this evolution, providing high-reliability insulation solutions that empower the next generation of electronic and electrical systems. As industries continue to push the limits of performance and miniaturization, materials like PI film will remain indispensable. With its strong foundation in R&D, customized manufacturing, and customer-driven innovation, Yanhe New Materials is not just meeting today’s challenges—it is helping to shape the future of high-performance insulation technology.
