Nitrile butadiene rubber (NBR) has become a crucial material in various industries, particularly in China, where its applications are rapidly expanding. Understanding the properties of NBR is essential for manufacturers and engineers who rely on its unique characteristics for producing durable and high-performance products. This guide delves into the fundamental properties of nitrile rubber, emphasizing its significance in the Chinese market.
Readers can expect to learn about the chemical composition, physical properties, and performance characteristics of NBR. The guide will also explore the factors influencing its production and quality, as well as the latest advancements in technology that enhance its applications. By the end, readers will have a comprehensive understanding of nitrile rubber and its pivotal role in various sectors.
Top 10 Nitrile Butadiene Rubber (NBR) Factories in China
Are you curious about the top nitrile butadiene rubber (NBR) factories in China? Let’s dive into the world of synthetic rubber and explore the leading manufacturers that are making a significant impact in this industry. In China, several companies stand out for their innovative approaches and high-quality NBR products. Here, we will compare some of the top players, highlighting their strengths, product ranges, and contributions to the global rubber market. From subsidiaries of major petrochemical giants to specialized rubber manufacturers, the NBR landscape in China is diverse and competitive.
Comprehensive Insights into Nitrile Butadiene Rubber (NBR)
Nitrile Butadiene Rubber (NBR) is a synthetic rubber copolymer made from acrylonitrile and butadiene. It is renowned for its excellent resistance to oils, fuels, and chemicals, making it a preferred choice in various industries, including automotive, aerospace, and medical. The properties of NBR can vary significantly based on the acrylonitrile content, which typically ranges from 18% to 50%. This variation affects its oil resistance, flexibility, and low-temperature performance.
Technical Features of NBR
| Property | Description |
|---|---|
| Density | 1.00 g/cc (base elastomer) |
| Hardness | Shore A 40-90, depending on compounding |
| Tensile Strength | 6.89 – 24.1 MPa (1000 – 3500 psi) |
| Elongation at Break | 400 – 600% (reinforced) |
| Maximum Service Temperature | 120 °C (248 °F) |
| Minimum Service Temperature | -30 °C (-22 °F) |
| Brittleness Temperature | -51.1 °C (-60.0 °F) |
| Glass Transition Temp (Tg) | -38.0 °C to -2.00 °C depending on ACN content |
Types of NBR
Different types of NBR are produced based on the acrylonitrile content and specific applications. Here’s a comparison of the various types:
| Type | Acrylonitrile Content | Characteristics | Applications |
|---|---|---|---|
| High ACN NBR | 36%-43% | Excellent oil resistance, high strength | Fuel hoses, gaskets |
| Medium-to-High ACN NBR | 31%-36% | Good balance of oil and low-temperature resistance | Automotive parts, seals |
| Medium ACN NBR | 25%-31% | General-purpose, moderate oil resistance | Industrial applications |
| Low ACN NBR | <25% | Lower oil resistance, better flexibility | Medical gloves, soft rubber products |
| Carboxylated NBR (XNBR) | Varies | Enhanced adhesion and compatibility | Adhesives, coatings |
Leading NBR Manufacturers in China
- Rubber Tools (www.rubber-tools.com)
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Known for its innovative approaches in synthetic rubber production, Rubber Tools offers a wide range of NBR products tailored for various industrial applications.
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Savvy Rubber (savvyrubber.com)
- A trusted manufacturer of NBR O-rings, Savvy Rubber specializes in producing high-quality Buna-N O-rings that are widely used in automotive and industrial applications.
- Look Polymers (www.lookpolymers.com)
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This company provides detailed insights into the properties of NBR, including its mechanical and thermal characteristics, making it a valuable resource for manufacturers and engineers.
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Kaxite Rubber (www.kaxite-rubber.com)
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Kaxite is a prominent exporter of NBR rubber products, focusing on high-quality manufacturing processes and a diverse product range, including gaskets and seals.
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Excelle Chemical (www.excellechem.com)
- With a strong emphasis on quality and technology, Excelle Chemical produces NBR with excellent oil resistance, catering to the automotive and industrial sectors.
Applications of NBR
NBR is utilized in a variety of applications due to its unique properties. Common uses include:
– Automotive Industry: Fuel hoses, gaskets, seals, and O-rings.
– Medical Field: Examination gloves and protective equipment.
– Industrial Applications: Oil seals, rollers, and various rubber parts requiring high oil resistance.
– Aerospace: Components that require durability and resistance to extreme conditions.
Conclusion
Nitrile Butadiene Rubber (NBR) is a versatile material with a wide range of applications across various industries. The leading manufacturers in China, such as Rubber Tools, Savvy Rubber, Look Polymers, Kaxite Rubber, and Excelle Chemical, are at the forefront of producing high-quality NBR products. As the demand for synthetic rubber continues to grow, these companies are well-positioned to meet the needs of global markets.
Frequently Asked Questions (FAQs)
Related Video
What is Nitrile Butadiene Rubber (NBR) and its key properties?
NBR is a synthetic rubber copolymer made from acrylonitrile and butadiene, known for its high resistance to oils, fuels, and chemicals. It operates effectively across a wide temperature range, making it suitable for various industrial applications.
What are the common applications of NBR?
NBR is widely used in the automotive and aerospace industries for fuel hoses, seals, and gaskets. It is also utilized in medical gloves and various industrial applications due to its chemical resistance and durability.
How do manufacturers ensure the quality of NBR products?
Manufacturers implement strict quality control measures, including Continuous Quality Improvement (CQI) processes and third-party inspections. They also provide Certificates of Analysis (COA) and Material Safety Data Sheets (MSDS/SDS) to ensure product quality.
Can I get samples of NBR for testing?
Yes, many manufacturers offer samples of NBR for testing purposes. This allows potential customers to evaluate the product’s quality before placing larger orders.
What packaging options are available for NBR products?
NBR products are typically packaged in various forms, including iron drums, plastic drums, and bags. Delivery times vary, but most shipments are completed within 14 days after order confirmation.