The low content of ozone in the atmosphere is the main factor causing rubber cracking. The ozone aging chamber imitates and strengthens the ozone conditions in the atmosphere, studies the rules of the effect of ozone on rubber, quickly determines and evaluates the anti ozone aging performance of rubber and the protective effect of anti ozone agents, and then adopts effective anti-aging methods to improve the service life of rubber products
One Experimental method
According to the experimental methods and specifications, it can be divided into "static" and "dynamic". Static refers to placing the sample in the experimental box for testing after being stretched, while dynamic refers to placing the sample on the fixture of the experimental box and conducting the experiment while stretching. The lifting of the stretched sample is about 5% -45% of the tested sample itself.
II Principle of refrigeration operation
The refrigeration cycle adopts the reverse Carnot cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, which consumes work to increase the exhaust temperature. Afterwards, the refrigerant undergoes heat exchange through the condenser and other media to transfer heat to the surrounding media. After the refrigerant undergoes adiabatic expansion through the shut-off valve, the temperature of the refrigerant decreases. Finally, the refrigerant absorbs heat from objects with higher temperatures through evaporators and other means, causing the temperature of the cooled object to decrease. This cycle repeats itself and reaches the intention of cooling down. The planning of the refrigeration system utilizes energy conditioning skills, which is a useful approach that ensures the normal operation of the refrigeration unit while effectively regulating the energy consumption and cooling capacity of the refrigeration system, reducing the operating costs of the refrigeration system to a more economical state.
III characteristic
1. Air circulation equipment: Built in circulation air duct, the experimental airflow is uniformly parallel to the surface of the specimen from top to bottom,
Compliant with national standards.
2. Choose an integrated ozone concentration and temperature/humidity controller (with a touch button setting), which has high integration and good reliability, LED display, display resolution temperature (0.1 ℃), humidity (0.1% RH), ozone concentration (1pphm), PID setting value control, easy operation
3. The electromagnetic air pump provides excellent air source, oil-free and dry, ensuring the reliability of the air system for long-term operation
4. The dual speed ultraviolet ozone detector is a globally recognized instrument developed in collaboration between Shanghai University and our company to check ozone. It has stable performance, active zero adjustment control, ozone free cold light source, long service life, and high accuracy Bill Lambert digital measurement software, precise and reliable
5. The equipment has the following safety maintenance devices:
5.1 Maintenance of power overload and short circuit
5.2 Maintenance of Control Circuit Overload, Short Circuit, and Grounding
5.3 Overheating maintenance, alarm sound prompts, and water shortage maintenance

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