News

Insulation sheets are multifunctional materials widely used across industries due to their excellent thermal, electrical, and acoustic insulation properties. With low thermal conductivity, high dielectric strength, and reliable sound absorption, they offer dependable solutions for energy efficiency, system safety, and noise control.

Yilong insulation materials (subsidiary of Shandong Sida Industry Co.,Ltd.) has built a strong reputation since its inception in 1966 as a state-owned factory in Zhucheng, Shandong. Through significant transformations—including a pioneering shift to a joint-stock cooperative system—it evolved into a modern corporation with a registered capital of ¥61.56 million, over 1,300 employees, and total assets around ¥320 million .

Today, thermosetting resins are typically produced in smaller volumes than thermoplastic resins and often play a supporting role in the materials industry. However, did you know that the first synthetic resin ever invented was not a thermoplastic, but a thermosetting resin called bakelite?

FR-4, the widely used epoxy glass cloth laminate, is well known for its excellent mechanical strength, flame resistance, and electrical insulation. While most people associate FR-4 with the typical green color seen in printed circuit boards (PCBs), FR-4 is actually available in several different colors, including yellow, white, black, and natural (light green or beige). But what do these colors really mean?

FR-4, G10 and G11 are all thermoset materials widely used in the electronics and electrical engineering industries for their properties and performance.

G-10 is a high-performance glass epoxy composite that has become indispensable across a wide range of industries due to its exceptional strength, durability, and resistance to environmental factors.

FR4 is a multipurpose glass epoxy laminate that features flame-retardant properties, as indicated by the letters “FR” in its name. It is often the substrate material of choice for electrical insulation, recognizable by its signature green color. The material’s low coefficient of thermal expansion allows it to resist contraction and expansion under exposure to fluctuating operating temperatures, making it ideal for high-temperature applications. It’s exceptional dielectric properties also contribute to its capability as an insulator.

The lamination process of Epoxy Glass Fiber Sheets is a sophisticated manufacturing technique that combines layers of glass fiber fabric with epoxy resin to create a robust, versatile material. This process involves carefully arranging multiple layers of glass fiber cloth, impregnating them with epoxy resin, and then subjecting the assembly to heat and pressure. The result is a high-performance composite material that boasts exceptional strength, durability, and electrical insulation properties. Understanding this intricate process is crucial for manufacturers and end-users alike, as it directly impacts the quality and performance of the final product. The lamination process not only determines the physical characteristics but also influences their applications across various industries.