Buna N, a synthetic rubber known for its durability and versatility, plays a crucial role in various industries in China. As the country continues to expand its manufacturing capabilities, understanding Buna N’s applications and production processes becomes increasingly important. This guide will delve into the significance of Buna N in the Chinese market, exploring its uses in automotive, footwear, and industrial sectors.
Readers can expect to gain insights into the properties that make Buna N a preferred material, including its resistance to wear, heat, and chemicals. The guide will also cover the environmental considerations surrounding its production and use, highlighting innovations aimed at sustainability. By the end, readers will have a comprehensive understanding of Buna N’s impact on both the economy and the environment in China.
Comprehensive Guide to Buna-N and Nitrile Rubber
Buna-N, also known as Nitrile or NBR (Nitrile Butadiene Rubber), is a widely used synthetic rubber known for its excellent oil and fuel resistance. It is a copolymer of butadiene and acrylonitrile, making it suitable for various applications, particularly in the automotive and industrial sectors. This guide will delve into the technical features, types, and applications of Buna-N, providing a thorough understanding of its properties and uses.
Technical Features of Buna-N
Buna-N is favored for its unique properties, which make it suitable for a variety of applications. Below is a comparison table highlighting its key technical features:
| Property | Value |
|---|---|
| Material Type | Nitrile Butadiene Rubber (NBR) |
| Temperature Range | -40°F to +250°F (-40°C to +120°C) |
| Hardness | 40° to 95° Shore A |
| Tensile Strength | 9 MPa (min) |
| Elongation at Break | 350% (min) |
| Specific Gravity | 1.35/cm³ |
| Compression Set | 13-25% at 100°C for 22 hours |
| Color | Typically Black |
These properties make Buna-N an excellent choice for applications requiring durability and resistance to various chemicals and oils.
Types of Buna-N
Buna-N comes in various formulations, each tailored for specific applications. The following table outlines the different types of Buna-N and their characteristics:
| Type | Acrylonitrile Content | Applications |
|---|---|---|
| Standard Buna-N | 18-50% | General sealing applications |
| High Acrylonitrile | 50-70% | Oil and fuel resistance |
| Low Acrylonitrile | 10-18% | Flexibility in low-temperature applications |
| Specialty Grades | Varies | Custom applications (e.g., food-grade) |
Each type of Buna-N is designed to meet specific performance criteria, making it versatile for various industrial needs.
Applications of Buna-N
Buna-N is extensively used across multiple industries due to its excellent mechanical properties and resistance to oils and fuels. Common applications include:
– Automotive: Used in seals, gaskets, and O-rings for engines and fuel systems.
– Industrial: Employed in hydraulic systems, pumps, and valves.
– Aerospace: Utilized in aircraft fuel systems and hydraulic applications.
– Consumer Products: Found in household items requiring durable seals and gaskets.
Companies like www.qlrubber.com and www.seal-china.com offer a range of Buna-N products tailored for these applications.
Differences Between Buna-N and Other Rubber Types
Understanding the differences between Buna-N and other rubber types is crucial for selecting the right material for specific applications. Below is a comparison of Buna-N with other common rubber types:
| Rubber Type | Oil Resistance | Temperature Range | Weather Resistance | Cost |
|---|---|---|---|---|
| Buna-N | Excellent | -40°F to +250°F | Fair | Moderate |
| EPDM | Poor | -50°F to +300°F | Excellent | Moderate |
| Silicone | Fair | -100°F to +500°F | Good | High |
| Neoprene | Good | -40°F to +250°F | Good | Moderate |
This table illustrates that while Buna-N excels in oil resistance, other rubber types may offer better performance in specific areas, such as temperature extremes or weather resistance.
Conclusion
Buna-N is a versatile and durable material widely used in various industries due to its excellent oil resistance and mechanical properties. Understanding its technical features, types, and applications can help in selecting the right material for specific needs. Companies like plas-fab.com and www.seal-china.com provide a range of Buna-N products, ensuring that users can find the right solution for their applications.
FAQs
1. What is Buna-N?
Buna-N, or Nitrile Butadiene Rubber (NBR), is a synthetic rubber known for its excellent oil and fuel resistance, making it suitable for various industrial applications.
2. What are the main applications of Buna-N?
Buna-N is commonly used in automotive seals, gaskets, O-rings, hydraulic systems, and aerospace applications due to its durability and resistance to oils.
3. How does Buna-N compare to other rubber types?
Buna-N offers excellent oil resistance but has moderate weather resistance compared to EPDM, which excels in environmental resistance.
4. What factors should be considered when selecting Buna-N?
Consider the acrylonitrile content, temperature range, and specific application requirements to choose the right type of Buna-N for your needs.
5. Where can I purchase Buna-N products?
Buna-N products can be purchased from various suppliers, including www.qlrubber.com and www.seal-china.com, which offer a wide range of options for different applications.