How Nano-SiO2 Improves the Mechanical and Tribological Properties of Nitrile Rubber: A Molecular Dynamics Simulation Study (PDF)

Nitrile Rubber Properties PDF Download

If you are looking for a synthetic rubber that can withstand high temperatures, oil, and chemicals, you might want to consider nitrile rubber. Nitrile rubber, also known as NBR, Buna-N, or acrylonitrile butadiene rubber, is a copolymer of acrylonitrile and butadiene. It has excellent physical and mechanical properties that make it suitable for various applications in different industries. In this article, we will explore the properties, applications, and benefits of nitrile rubber, and show you how to download a PDF file with detailed information on nitrile rubber properties.

nitrile rubber properties pdf download

Nitrile Rubber Properties

Nitrile rubber is a versatile material that can be tailored to different needs by varying the ratio of acrylonitrile and butadiene in its composition. The higher the acrylonitrile content, the more oil-resistant and stronger the rubber becomes. The lower the acrylonitrile content, the more flexible and low-temperature resistant the rubber becomes. Here are some of the main properties of nitrile rubber:

Chemical structure and composition

Nitrile rubber is a copolymer of acrylonitrile (ACN) and butadiene (BD) monomers. The chemical structure of nitrile rubber is shown below:

The acrylonitrile content of nitrile rubber can range from 15% to 50%, depending on the desired properties. The average molecular weight of nitrile rubber is about 200,000 g/mol.

Physical properties

Nitrile rubber has excellent tensile strength, elasticity, and temperature resistance. Its tensile strength ranges from 3.5 MPa to 21 MPa, depending on the grade of the rubber. Nitrile rubber is also highly elastic, with an elongation at break of up to 700%. Nitrile rubber can function in temperatures from 40 C to 108 C (40 F to 226 F), making it ideal for aeronautical applications.

Oil resistance

One of the most notable features of nitrile rubber is its resistance to oil, fuel, and other chemicals. Nitrile rubber does not swell or degrade when exposed to oils, such as mineral oil, vegetable oil, animal oil, gasoline, diesel, kerosene, etc. This makes nitrile rubber suitable for applications that involve contact with oils or fuels.

Abrasion resistance

Nitrile rubber is also resistant to abrasion, cuts, tears, and wear. It can withstand friction and rubbing without losing its shape or strength. Nitrile rubber is often used for products that require durability and toughness, such as hoses, seals, and gaskets.

Puncture resistance

Nitrile rubber is also resistant to punctures and perforations. It can withstand high pressures and impacts without breaking or leaking. Nitrile rubber is three times more puncture resistant than natural rubber, making it ideal for protective gloves and self-sealing fuel tanks.

Limitations and disadvantages

Despite its many advantages, nitrile rubber also has some limitations and disadvantages that need to be considered. Here are some of the drawbacks of nitrile rubber:

Ozone degradation

Nitrile rubber is susceptible to ozone degradation, which means that it can deteriorate when exposed to ozone, sunlight, and weather. Ozone can cause cracks and brittleness in nitrile rubber, reducing its lifespan and performance. Nitrile rubber is not recommended for outdoor applications or environments with high ozone levels.

Flame resistance

Nitrile rubber is not very flame resistant, which means that it can catch fire or melt when exposed to high temperatures or flames. Nitrile rubber can also release toxic fumes when burned, which can be harmful to health and the environment. Nitrile rubber is not suitable for applications that involve fire or heat sources.

Solvent resistance

Nitrile rubber is not very resistant to solvents or chlorinated hydrocarbons, which means that it can swell or dissolve when exposed to these chemicals. Solvents such as acetone, methyl ethyl ketone, toluene, xylene, etc., can damage nitrile rubber and affect its properties. Nitrile rubber is not compatible with solvents or chlorinated hydrocarbons.

Nitrile Rubber Applications

Nitrile rubber is widely used in various industries for its oil resistance, temperature resistance, and strength. Here are some of the common applications of nitrile rubber:

Automotive industry

Nitrile rubber is one of the most popular materials in the automotive industry, especially for fuel and oil handling systems. Nitrile rubber is used to make fuel and oil hoses, seals, gaskets, o-rings, engine hoses, and other parts that need to withstand oil, heat, and pressure. Nitrile rubber can prevent leaks and corrosion in the automotive components.

Aerospace industry

Nitrile rubber is also widely used in the aerospace industry for its working temperature range and puncture resistance. Nitrile rubber is used to make self-sealing fuel tanks and bladders that can prevent fuel loss and fire in case of punctures or impacts. Nitrile rubber can also withstand the extreme temperatures and pressures in the aerospace environment.

Nuclear industry

Nitrile rubber is also used in the nuclear industry to make protective gloves for workers who handle radioactive materials. Nitrile rubber gloves are resistant to punctures, cuts, abrasion, and chemicals, as well as being hypoallergenic and disposable. Nitrile rubber gloves can provide safety and comfort for the nuclear workers.

Medical industry

Nitrile rubber is also used in the medical industry to make disposable gloves for medical professionals, laboratory technicians, cleaners, and examiners. Nitrile rubber gloves are resistant to oils, blood, viruses, bacteria, and other contaminants, as well as being hypoallergenic and latex-free. Nitrile rubber gloves can prevent infections and allergies in the medical settings.

Other industries

Nitrile rubber is also used in other industries for various purposes. For example, nitrile rubber is used to make printing rollers that spread inks evenly and smoothly on paper or other surfaces. Nitrile rubber is also used to coat fabrics and textiles to make them waterproof and improve their finish. Nitrile rubber is also used to make floor mats that are durable, slip-resistant, and easy to clean.

Conclusion

Nitrile rubber is a synthetic rubber that has many advantages over other types of rubber. It has excellent oil resistance, temperature resistance, strength, elasticity, abrasion resistance, and puncture resistance. It can be used for various applications in different industries that require these properties. However, nitrile rubber also has some limitations and disadvantages that need to be considered. It is prone to ozone degradation, has low flame resistance, and has poor solvent resistance. It is not suitable for outdoor applications or environments with high ozone levels, fire or heat sources, or solvents or chlorinated hydrocarbons.

Here is the rest of the article with HTML formatting: download a PDF file with detailed information on nitrile rubber properties. You can find the link to the PDF file at the end of this article. The PDF file contains a comprehensive overview of nitrile rubber properties, including chemical structure, physical properties, limitations, applications, and benefits. You can also find a table that compares nitrile rubber with other types of rubber, such as natural rubber, silicone rubber, and fluoroelastomer rubber. The PDF file is free and easy to download. You just need to click on the link and save the file to your device. You can then read it offline or print it out for your convenience.

FAQs

Here are some of the frequently asked questions about nitrile rubber:

What is the difference between nitrile rubber and latex rubber?

Nitrile rubber and latex rubber are both synthetic rubbers that are widely used for disposable gloves. However, they have different properties and advantages. Nitrile rubber is more resistant to oils, chemicals, punctures, and abrasion than latex rubber. Nitrile rubber is also hypoallergenic and latex-free, which means that it does not cause allergic reactions or irritations to the skin. Latex rubber is more flexible and elastic than nitrile rubber. Latex rubber also has better tactile sensitivity and grip than nitrile rubber. Latex rubber is biodegradable and environmentally friendly, while nitrile rubber is not.

How can I test the quality of nitrile rubber?

There are several ways to test the quality of nitrile rubber products, such as gloves, hoses, seals, etc. One way is to check the appearance and feel of the product. The product should be smooth, uniform, and free of defects, such as holes, tears, cracks, or bubbles. The product should also fit well and feel comfortable on the skin or surface. Another way is to perform a stretch test. The product should be able to stretch without breaking or losing its shape. The product should also return to its original shape after being released. A third way is to perform a chemical resistance test. The product should be able to resist swelling or degradation when exposed to oils or chemicals.

What are some of the variants of nitrile rubber?

Nitrile rubber can be modified or blended with other materials to create different variants with different properties and applications. Some of the common variants of nitrile rubber are:

• Hydrogenated nitrile rubber (HNBR): This is a type of nitrile rubber that has been hydrogenated to improve its heat and oxidation resistance. HNBR can withstand temperatures up to 150 C (302 F) and has better oil resistance than standard NBR.

• Carboxylated nitrile rubber (XNBR): This is a type of nitrile rubber that has been carboxylated to improve its strength and abrasion resistance. XNBR has higher tensile strength and tear resistance than standard NBR.

• Nitrile butadiene styrene (NBS): This is a type of nitrile rubber that has been blended with styrene to improve its impact resistance and processability. NBS has better toughness and flowability than standard NBR.

How do I choose the right grade of nitrile rubber for my application?

The right grade of nitrile rubber for your application depends on several factors, such as the temperature range, oil exposure, chemical exposure, abrasion resistance, elasticity, and cost. You need to consider the specific requirements and conditions of your application and compare them with the properties and limitations of different grades of nitrile rubber. You can also consult with a professional or a supplier to get expert advice on choosing the right grade of nitrile rubber for your application.

How do I dispose of nitrile rubber products?

Nitrile rubber products are not biodegradable and cannot be recycled easily. Therefore, you need to dispose of them properly and responsibly to avoid environmental pollution and health hazards. You should follow the local regulations and guidelines on how to dispose of nitrile rubber products in your area. You should also avoid burning or burying nitrile rubber products, as this can release toxic fumes or leach harmful chemicals into the soil or water. You should also avoid flushing or washing nitrile rubber products down the drain, as this can clog the pipes or contaminate the water supply. You should use a designated bin or bag to collect and dispose of nitrile rubber products safely and securely.

Here is the link to the PDF file with nitrile rubber properties:

https://www.thomasnet.com/articles/pdf/all-about-nitrile-rubber.pdf 71b2f0854b