Talking about the same and differences between epoxy insulating board G10 and fr4

2024-07-01 15:04 | By: ZTELEC-www.ztelecgroup.com | 180click

Both G10 and fr4 are developed and applied as insulating materials. Here, we first enumerate what they have in common:

composite materials g10

G-10 material, also known as garolite, is a high-pressure fiberglass laminate—a type of composite material.

Composition and Characteristics of G-10 Material:

G-10 is composed of an epoxy resin binder and a glass epoxy composite.The epoxy resin binder provides strength, durability, and resistance to chemicals, heat, and UV light.The glass epoxy composite contributes to electrical insulation and mechanical properties.

It’s compliant with the MIL-I-24768/2 military specification for insulation plastic laminated thermosetting materials.

Applications:

G-10 finds use in various electrical applications, such as circuit boards and high-voltage insulators.It’s available in sheet and rod forms or as fabrication-ready precision blanks.

Advantages of G-10:

High strength and rigidity.

Excellent electrical insulation.

Chemical resistance.

Availability in various forms.

Comparison:

FR-4: Similar to G-10 but offers additional fire safety.

Carbon Fiber Alternatives: Provide increased strength and weight benefits compared to G-10 and FR-4.

composite materials fr4

FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material.

Material Composition:

FR-4 consists of woven fiberglass cloth impregnated with high-quality epoxy resin.

Fillers are added to enhance properties like flame retardancy. These fillers may contain bromine or other alternatives without halogens.

The resulting material is mechanically strong, electrically insulating, and resistant to high temperatures.

Key Properties:

Dimensional Stability: FR-4 maintains its shape under varying conditions.

Low Water Absorption: It doesn’t absorb moisture significantly.

Flame Retardancy: FR-4 meets the UL94 V-0 rating, making it self-extinguishing.

High Glass Transition Temperatures (TG): Variants excel in elevated temperature applications.

Available temperature indices include 130°C (Class B), 155°C (Class F), and 180°C (Class H).

Forms and Variants:

FR-4 is available as pre-impregnated cloth (prepreg), pressed sheets, wound tubes, and custom parts.

Variants like FR-2, FR-3, and FR-5 cater to specific application needs.

Talking about the same and differences between epoxy insulating board G10 and fr4

1. Essentially the same

The same in essence refers to the same raw materials used to make g10 and fr4. They are all made of electronic-grade glass fiber cloth, and the impregnation used is also the same high temperature epoxy resin, which determines their high temperature resistance and insulation. characteristics.

2. The same production process

They are all formed by the lamination process after impregnating epoxy resin with glass fiber cloth. The unlaminated layer is called pp sheet for short, and the multi-layer glass fiber cloth and resin impregnation and lamination are called laminates after hot pressing. , the number of laminated layers is set according to the needs of users, thus resulting in different thicknesses of laminates. The thicker the thickness, the higher the dielectric constant and the stronger the insulating ability.

3. The same scope of application

Since the materials are similar, the craftsmanship is the same, which determines the similarity of their uses. Because of their stable electrical insulation performance, they are especially suitable for products with high performance electronic insulation requirements, such as FPC reinforcement boards, PCB drilling pads, glass fiber meson potentiometers, carbon film printed glass fiber boards, precision pinion gears, electronic Equipment insulating stay partitions, insulating pads, transformer insulating plates, motor insulating parts, grinding gears, electronic switch insulating plates, etc.

Next, let's talk about the differences between them

1. Different performance

First of all, the heat resistance level of G10 is higher than that of fr4, the temperature resistance of FR-4 is 125-150°, and the strength of G10 is high and the temperature resistance is 160-180°. Therefore, the heat resistance level of fr4 is b, while that of g10 is f. Secondly, the parallel layer breakdown voltage of g10 is also higher than fr4, the parallel layer breakdown voltage of fr4 (in 90 degree transformer special oil) is greater than or equal to 35KV, while g10 can reach 40KV.

2. The details of the process and ingredients are different

We mentioned above that their raw materials and processes are the same, so why are there really two products produced? Then we have to come up with an explanation, the formula of their epoxy resin and curing agent must be slightly different, such as the content of epoxy resin is different, etc.

3. The price of fr4 and g10 is different

The performance of G10 is stronger than that of fr4, which means that the price of g10 is higher than that of fr4. superior.

4. How to distinguish between fr4 and g10

This question is easy to answer. The two are so similar, including the same color after processing, only the performance is different. We only need to inform the required parameters such as the fire resistance level when purchasing the material. It is challenging to find the difference in the appearance.

So much has been introduced, do you know fr4 and g10? To learn more, please follow our website: https://ztelecgroup.com

Welcome to reprint:https://www.ztelecgroup.com/zt-technical-article/496.html