Blog - JingHong

Phenolic Series

What Electrical Components Commonly Use Phenolic Cotton Sheets?

Phenolic cotton sheets are widely utilized in various electrical components due to their exceptional insulating properties, mechanical strength, and durability. These versatile materials find applications in transformers, switchgear, circuit breakers, and high-voltage equipment. Specifically, phenolic cotton sheets are commonly used in terminal boards, insulating barriers, and structural supports within electrical systems. Their ability to withstand high temperatures, resist moisture absorption, and maintain dimensional stability makes them ideal for components that require reliable electrical insulation and mechanical integrity. From power distribution equipment to industrial motors, phenolic cotton sheets play a crucial role in ensuring the safe and efficient operation of numerous electrical devices across diverse industries.

Caroline Jia

Sep 22, 2025

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Glass Fiber Series

Typical Mechanical Properties and Tolerances of FR4 Sheets by Thickness

James Yang

Sep 22, 2025

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Glass Fiber Series

How Does Temperature Affect the Mechanical Strength of 3240 Epoxy Sheet?

James Yang

Sep 19, 2025

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Phenolic Series

How Does Chemical Resistance Enhance Bakelite's Industrial Applications?

Caroline Jia

Sep 19, 2025

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Phenolic Series

Why is Heat Resistance Crucial for Bakelite in Electrical Systems?

Heat resistance is absolutely essential for Bakelite sheets in electrical systems due to their role in preventing thermal degradation, maintaining structural integrity, and ensuring long-term safety. As electrical components generate heat during operation, Bakelite sheets' ability to withstand high temperatures without melting, deforming, or losing their insulating properties is paramount. This thermal stability allows Bakelite sheets to consistently protect against electrical shorts, fires, and system failures even under demanding conditions. By preserving their mechanical and dielectric strength at elevated temperatures, heat-resistant Bakelite sheets enable the reliable functioning of everything from household appliances to industrial power distribution equipment. Ultimately, the heat resistance of Bakelite sheets is crucial for safeguarding both the performance and safety of modern electrical infrastructure.

Caroline Jia

Sep 19, 2025

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Phenolic Series

How Temperature Affects Bakelite Insulation Performance?

Caroline Jia

Sep 19, 2025

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Phenolic Series

How to Test Bakelite Sheets for Heat and UV Degradation?

Testing Bakelite sheets for heat and UV degradation is crucial for ensuring their long-term performance in various applications. To evaluate thermal aging, samples are typically subjected to accelerated aging tests in ovens at elevated temperatures for extended periods. UV degradation can be assessed through exposure to artificial UV light sources in weathering chambers. After aging, mechanical properties like tensile strength and impact resistance are measured and compared to baseline values. Electrical properties such as dielectric strength and volume resistivity are also evaluated. Visual inspection and weight loss measurements can provide additional insights into degradation. Specialized analytical techniques like FTIR spectroscopy may be used to detect chemical changes in the material structure.

Caroline Jia

Sep 19, 2025

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Glass Fiber Series

How Manufacturing Steps Affect FR4 Board Reliability?

James Yang

Sep 19, 2025

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Glass Fiber Series

Environmental and Recycling Options for end-of-life FR4 Boards

As electronic waste continues to grow, the recycling of FR4 boards has become increasingly important for environmental sustainability. FR4 boards, widely used in printed circuit boards (PCBs), pose unique challenges due to their composite nature. However, innovative recycling methods are emerging to address these issues. From mechanical separation techniques to chemical recovery processes, the industry is developing more efficient ways to reclaim valuable materials from end-of-life FR4 boards. These efforts not only reduce environmental impact but also contribute to the circular economy by recovering precious metals and other reusable components. As technology advances, sustainable recycling options for FR4 boards are becoming more viable, offering hope for a greener future in electronics manufacturing.

James Yang

Sep 19, 2025

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