Compressor XNBR rubber seals

Introduction to the contents of the compressor XNBR rubber seals

Introduction

XNBR rubber material properties

Carboxylated nitrile rubber (XNBR) is a special nitrile rubber whose polymer backbone is chemically modified with a carboxylic acid group, which gives XNBR better corrosion, tear and abrasion resistance. Compared with traditional nitrile rubber (NBR), XNBR has higher tensile strength and better heat and wear resistance, making it unique in the field of compressor seals.

First of all, XNBR is vulcanized faster than NBR, which means that XNBR seals are more productive under the same production conditions. Secondly, the pure rubber fit of XNBR shows high tensile strength, which allows XNBR seals to maintain stable sealing performance under high pressure and high loads. In addition, the heat resistance and wear resistance of XNBR are also better than NBR, so that XNBR seals can maintain a long service life in harsh environments such as high temperature, high speed and high load.

However, XNBR also has some drawbacks. For example, XNBR has poor low-temperature flexibility and large compression set, especially in low-temperature environments, where its sealing performance may be compromised. In addition, XNBR has poor scorch safety, and the temperature and time need to be strictly controlled during the production process to avoid scorching.

The manufacturing process of XNBR rubber seals

The manufacturing process of compressor XNBR rubber seals mainly includes material preparation, mixing, molding, vulcanization, inspection and other steps.

Material preparation

According to the use environment and sealing requirements of the compressor, select the appropriate XNBR rubber material, and prepare the corresponding additives, packing, etc.

Mixing

XNBR rubber materials, additives, fillers, etc. are mixed in a certain proportion and kneaded by mechanical stirring or kneading to obtain a uniform rubber mixture.

Molding

The mixed rubber mixture is placed in a mold, and the rubber mixture is made into the desired seal shape by pressing and injection molding methods.

Vulcanization

The formed seal is put into the vulcanization equipment, and the vulcanization treatment is carried out at a certain temperature, pressure and time, so that the cross-linking reaction between the rubber molecules is formed to form a stable rubber network structure.

Inspection

The vulcanized seals are inspected in terms of appearance, size, performance, etc., to ensure that the seals meet the requirements of use.

Benefits of XNBR rubber seals in compressors

Compressor XNBR rubber seals offer the following application benefits:

Good sealing performance

XNBR rubber seals have good sealing performance, which can maintain stable sealing performance in harsh environments such as high temperature, high pressure and high speed to ensure the normal operation of the compressor.

Long life

XNBR rubber seals offer excellent heat, abrasion and corrosion resistance for long service life in harsh environments, reducing the frequency of repairs and replacements.

Wide range of application

XNBR rubber seals can adapt to different types and specifications of compressors to meet the sealing needs of different industries and different working conditions.

Environmental protection and energy saving

XNBR rubber seals are made of environmentally friendly materials and meet environmental protection requirements; At the same time, its excellent sealing performance can reduce the energy consumption and operating costs of the compressor.

Future Trends

With the continuous development of industrial technology and the increasing environmental protection requirements, compressor XNBR rubber seals will face more challenges and opportunities. In the future, the development trend of compressor XNBR rubber seals mainly includes the following aspects:

Material innovation

Research and development of new XNBR rubber materials with higher performance and lower cost to meet the sealing needs of different industries and different working conditions.

Manufacturing process optimization

Improve the production efficiency and product quality of XNBR rubber seals by improving manufacturing processes and equipment.

Intelligent development

Sensors, intelligent control systems and other technologies are applied to the production and use of compressor XNBR rubber seals to achieve intelligent monitoring, early warning and maintenance.

Environmental protection and energy saving

Continue to improve the environmental performance and energy-saving effect of XNBR rubber seals, reduce energy consumption and emissions, and promote the green development of industry.

Here are some frequently asked questions about compressor XNBR rubber seals and their answers (FAQs):

Q1: What is XNBR rubber?

A1: XNBR rubber, also known as carboxy-nitrile rubber, is a synthetic rubber. It is made of monomers such as butadiene, acrylonitrile and unsaturated carboxylic acids in a certain proportion of copolymerization. The rubber has excellent oil, abrasion and heat resistance, as well as good processability.

Q2: What is the function of XNBR rubber seals in compressors?

A2: XNBR rubber seals are mainly used in compressors to prevent leakage of working medium. They fill gaps in the joints of mechanical parts and ensure that the sealed medium does not leak or diffuse through the capillary tubes of the seal material due to pressure differences or concentration differences.

Q3: What are the performance characteristics of XNBR rubber seals?

A3: XNBR rubber seals have excellent oil resistance, abrasion resistance and heat resistance. Among them, the acrylonitrile segment mainly imparts excellent oil resistance to the polymer. At the same time, butadiene segments give the molecular chains flexibility, making the polymer elastic and cold-resistant. In addition, XNBR rubber can also be used as a modifier to improve the properties of other rubber materials, such as improving the oiliness and heat resistance of ethylene propylene rubber (EPDM).

Q4: How to select XNBR rubber seals?

A4: The basic requirements for sealing are good sealing, safety and reliability, long life, and should strive for compact structure, simple system, convenient manufacturing and maintenance, and low cost. When selecting XNBR rubber seals, you need to consider factors such as working pressure, temperature, media type, seal face type, etc. In general, the seal should match the medium and working conditions to be sealed to ensure good sealing performance and long service life.

Q5: How can XNBR rubber seals be used in combination with other rubber materials?

A5: XNBR rubber seals can be used in combination with NBR, CR or other general purpose diene rubbers to improve the abrasion and oil resistance of these rubbers. Especially when used in combination with PVC or polyoxymethylene, it can obtain a combined adhesive with excellent properties such as high hardness, wear resistance, oil resistance, chemical erosion resistance, and ozone aging resistance. This combination can be tailored and optimized to meet specific needs.

The above are some frequently asked questions about compressor XNBR rubber seals and their answers. If you have any further questions, it is recommended to consult relevant professionals or consult relevant literature.

Tips: Please provide drawings for customized products, we can complete the samples within 4-8 working days.