Selection Guide for High- and Low-Temperature Resistant Rubber Tubes

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High-temperature and low-temperature resistant rubber hoses: performance analysis and selection strategies

In industry and manufacturing, rubber pipes are important conveying pipes and are widely used in many fields. According to the needs of the application environment, rubber pipes are designed to withstand different temperature ranges and are usually divided into high-temperature resistant rubber pipes and low-temperature resistant rubber pipes. Understanding the performance differences between these two rubber pipes and how to correctly select the appropriate rubber pipe is crucial to improving production efficiency and extending the service life of equipment.

Performance characteristics of high-temperature resistant rubber pipes

High-temperature resistant rubber pipes are mainly used in high-temperature environments, such as automobile exhaust systems and the transportation of high-temperature fluids in the chemical industry. This requires rubber materials to have excellent thermal stability and anti-aging capabilities so that they can still maintain good physical and chemical properties for a long time under high temperature conditions.

Main material selection

1. Silicone Rubber: Silicone rubber pipes have outstanding high-temperature performance, can work normally at temperatures up to 250°C, and have excellent elasticity and tear resistance. Silicone rubber also has good chemical resistance and is suitable for conveying corrosive liquids.

2. Fluoroelastomer: Fluoroelastomer hose can be used in environments above 200°C. It has excellent oil and chemical resistance and is widely used in situations that require high chemical corrosion resistance and high temperature resistance.

Performance advantages

– Heat resistance: Able to withstand instantaneous high temperatures and not easy to age.

– Chemical corrosion resistance: In high temperature environments, it can maintain stable chemical properties.

– Excellent physical and mechanical properties: Elasticity and wear resistance ensure its durability under high temperature and high pressure conditions.

Application scenarios

High temperature resistant rubber hoses are often used in automobile engines, generator sets, and petrochemical production equipment. These occasions require rubber hoses to be durable and reliable in extreme high temperatures and corrosive media.

Performance characteristics of low temperature resistant rubber hoses

Unlike high temperature resistant rubber hoses, low temperature resistant rubber hoses are designed to handle extreme low temperature environments, which are commonly found in material transportation and gas delivery systems in low temperature areas. The key is to maintain good flexibility and impact resistance at extremely low temperatures.

Main material selection

1. Ethylene propylene rubber (EPDM): has good low-temperature flexibility, and its ozone resistance, UV resistance and aging resistance are also excellent.

2. Nitrile rubber (NBR): has outstanding oil resistance and can maintain a certain flexibility in low-temperature environments.

3. Chloroprene rubber (CR): provides excellent tolerance to low-temperature and high-humidity environments, and is also excellent in ozone resistance and weather aging resistance.

Performance advantages

– Low-temperature flexibility: not prone to embrittlement at temperatures of -40°C and below.

– Weather resistance: not prone to material deterioration due to temperature changes.

– Strong sealing performance: ensure good sealing effect at low temperatures to prevent leakage.

Application scenarios

Low-temperature resistant rubber tubes are widely used in cold storage cold chain transportation, polar scientific research equipment, aircraft fuel systems and other applications that require long-term exposure to low-temperature environments.

Selection Guide for High- and Low-Temperature Resistant Rubber Tubes

When selecting a suitable rubber tube, the temperature, chemical properties, mechanical shock, and pressure resistance requirements of the use environment should be considered comprehensively to prevent pipeline rupture or system leakage caused by material mismatch.

Ambient temperature

– When the use environment temperature is higher than 150°C, it is recommended to give priority to high-temperature resistant silicone rubber or fluororubber materials.

– When the temperature is lower than -20°C for a long time, consider choosing low-temperature resistant EPDM or nitrile rubber.

Chemical properties

– Fluororubber is an excellent choice for highly corrosive liquids or gases.

– For conventional weather resistance and aging resistance requirements, EPDM materials can be selected.

Mechanical shock and pressure resistance

For pipeline systems that need to withstand high mechanical shock or high-pressure environments, special attention should be paid to the physical strength and ductility of rubber materials under extreme high and low temperatures to ensure that they can work for a long time without failure.

Future development trends

With the advancement of science and technology, the performance of rubber materials is also constantly innovating and improving. The development of high-performance composite materials and nanotechnology is expected to provide rubber hoses with better temperature and chemical resistance. Pipes improved with smart materials will play a role in automatically sensing temperature changes, providing more accurate and safe solutions for changing industrial environments.

In summary, there are significant differences in performance between high-temperature resistant and low-temperature resistant rubber hoses. The selection of suitable rubber hoses must start from the actual use scenario and deeply analyze the use conditions to ensure the best performance to meet the industrial needs of safety, energy saving and long life.