YT1228 Ozone Aging Test Chamber

Product Information

The low content of ozone in the atmosphere is the main factor causing rubber cracking. The ozone aging chamber simulates and strengthens the ozone conditions in the atmosphere, studies the effect of ozone on rubber, and quickly identifies and evaluates the anti ozone aging performance of rubber and the protective effectiveness of anti ozone agents. Effective anti-aging measures are then taken to improve the service life of rubber products

This ozone aging test chamber is used for rubber products such as vulcanized rubber, thermoplastic rubber, cable insulation sheaths, etc. Under static or continuous dynamic tensile deformation, or under intermittent dynamic tensile and static tensile alternating deformation, exposed to sealed and unlit air containing a constant ozone concentration and a constant temperature test chamber, the samples are tested for a predetermined time to evaluate the ozone aging resistance of the rubber from the degree of cracking or other performance changes that occur on the surface of the samples.

Reference standard for ozone aging test chamber:

GB/T 13642-92 Vulcanized rubber - Ozone aging resistance test - Dynamic tensile test method;

GB/T 7762-2004 Rubber, vulcanized or thermoplastic - Static tensile test method for resistance to ozone cracking; GB/T 2951.1-2951.0-1997 General Test Methods for Insulation and Sheath Materials of Cables;

And the test methods specified in other relevant standards.

This ozone aging test chamber is made of high-quality materials and processed using the most advanced processing equipment in China. The surface of the outer shell is treated with spray coating, which is beautiful and smooth. The color matching is coordinated and the lines are smooth. The inner liner is made of imported high-quality stainless steel plate. The indoor sample racks, fixtures, conduits, and other accessories are made of materials such as stainless steel that are not easily decomposed by ozone and affect ozone concentration. The sample holder can rotate 360 degrees with adjustable speed.

The observation window is made of multi-layer insulated tempered glass with a laminated conductive film on the inside, which has the advantages of transparency, heat insulation, and is not prone to steam frosting. The interlayer between the inner container and the outer shell of the equipment is filled with high-density glass fiber cotton to ensure that the box will not experience excessive temperature fluctuations due to temperature conduction, and to maintain a constant temperature of the sample during the testing process.

The equipment uses a long axis fan motor for stirring and a stainless steel multi blade impeller that is resistant to high and low temperatures to achieve strong convection and vertical diffusion circulation, ensuring uniform and stable temperature in the laboratory.

A double-layer high-temperature resistant high tensile sealing strip is used between the door and the box to ensure the sealing of the testing area. Using non reactive door handles makes operation easier. High quality casters are installed at the bottom of the machine, making it easy to move and fix the machine.

Static tensile test

The standard stipulates that the two ends of the sample should be clamped on a dedicated fixture, and a tensile elongation of 20% should be selected. The fixture should be installed on a rotating sample holder, with a rotation speed between (20-25) mm/S. The test should be conducted at a temperature of (40 ± 2) ℃ and a specified ozone concentration. Check the cracking condition of the sample after the specified time. The general selection of ozone concentration is (50 ± 5) × 10-8.

Dynamic tensile test

The standard stipulates that the sample fixture can automatically stretch and reset the sample, with a stretching frequency of 0.5 ± 0.025Hz. The two ends of the sample are clamped on a dedicated fixture, and the sample is cyclically stretched from 0 to the maximum elongation. The fixture is installed on a rotating sample holder, with a rotation speed of (20-25) mm/S. At a temperature of (40 ± 2) ℃ and a specified ozone concentration, the fixture is cyclically stretched and reset and rotated with the sample holder for testing. Check the cracking condition of the sample after the specified time. The general selection of ozone concentration is (50 ± 5) × 10-8.

Product Features:

1. The control system of the ozone aging test chamber adopts an intelligent controller (setting, controlling temperature and concentration)

2. Temperature sensor: PT100 platinum resistor;

3. Control mode: thermal balance temperature regulation mode;

4. It has the function of automatic calculation, which can reduce the inconvenience caused by manual setting.

5. Ozone concentration: CT ozone concentration sensor, high accuracy, long lifespan;

6. The ozone generator adopts a medium frequency high voltage discharge method, which stabilizes the concentration of ozone produced due to the electrode not producing corona overheating, and does not decrease with working time or gas flow rate. No vulnerable components, maintenance free operation, it is a long-life type. Multiple groups can be used in parallel to meet design requirements.

7. The heating and humidification system of the ozone aging test chamber adopts far-infrared nickel chromium alloy high-speed heating electric heating.

8. Ozone aging test chamber protection system

9. Overall equipment over temperature protection; Overall equipment under phase/reverse phase; Protection for overall equipment overload, leakage, operation indication, automatic shutdown after fault alarm, etc. Waiting for functions

10. Overall equipment timing: The time controller controls the time required for the experiment and is easy to operate. When the device reaches the set time of operation, the test will automatically stop.

Main technical parameters:

1. Ozone aging test chamber equipment usage conditions Environmental temperature: 5 ℃~+28 ℃

2. Environmental humidity: ≤ 85%

3. Power requirement: AC220 (± 10%) V/50HZ

4. Studio size (D × W × H): 450 × 450 × 550mm Temperature range: 0-60 ℃

5. Temperature uniformity: ≤ 2 ℃

6. Temperature fluctuation: ± 0.5 ℃

7. Temperature deviation: ≤± 2 ℃

8. Heating rate: 0.7-1.0 ℃/min

9. Ozone concentration: 20-500PPHM

10. Ozone concentration deviation: ± 10%

11. Sample rack speed: (20-25) mm/S (adjustable)

12. Fixture elongation: 0-100%