Overview
The ozone aging test chamber NBC-CY150L is a factory direct product, mainly used to simulate and strengthen the ozone conditions in the atmosphere, study the effect of ozone on rubber, and quickly identify and evaluate the method of rubber anti-ozone aging performance and anti-ozone agent protection efficacy.
Features
1. The all-in-one machine structure design adopts SUS304 stainless steel plate inner box and optional paint outer box. The thermal insulation layer is double protection of rigid polyurethane foam and aluminum silicate thermal insulation cotton.
2. Equipped with static and dynamic test fixtures to support sample stretching and swirl/spin testing, the fixtures are made of materials such as aluminum that are not easy to analyze ozone.
3. The air circulation system adopts a horizontal diffusion vertical heat exchange arc circulation mode, and the power-saving motor is connected to multiple centrifugal fans.
4. The heating system is a fin type heat dissipation tubular stainless steel electric heater. Control mode adopts ID adjustment and solid state relay.
5. The refrigeration system adopts mechanical refrigeration air-cooled, environmentally friendly refrigerant R404, with automatic load capacity adjustment and multiple protection devices.
6. Ozone Detection System includes Ozone Generator, Ozone Sensor, Exhaust System and Flow Regulator for precise control.
7. The control system adopts a 7-inch color LCD touch man-machine interface, supports Chinese and English switching, has a large program capacity, and has power-off memory and reservation functions.
8. Comprehensive safety protection devices, including Compressor overheating, high voltage, overcurrent protection, heater overtemperature protection, and reverse phase, underphase, smoke alarm, etc.
Principle
The ozone aging test chamber uses a voltage silent discharge tube to generate ozone through an ozone generator, simulating the atmospheric ozone environment. The test method is divided into static and dynamic: the static test stretches the sample and puts it into the box; the dynamic test sample is tested on the top of the fixture while stretching, and the tensile float is 5% -45% of the sample itself. The control system automatically adjusts the temperature, ozone concentration and sample swirl/spin to study the rubber's anti-ozone aging performance.
Applications
Rubber aging test, cable insulation material evaluation, sheath material test
Standards
GB/T7762-2003、GB/T2951.21-2008、GB/T11206-2009
Steps
1. Prepare samples and cut them from newly molded specimens or finished products, at least 3 samples per condition, and the size meets the standard.
2. Choose a static or dynamic method according to the test requirements: statically stretch the sample and fix it; dynamically install the sample on the fixture and stretch it while testing.
3. Set controller parameters, including temperature, ozone concentration, time, number of cycles, etc.
4. Start the equipment and monitor the test process to ensure that the sample swirl/spin and airflow velocity meet the requirements.
5. After the test is completed, ozone is discharged to the outside through the exhaust system, and samples are taken out for evaluation.
Notice
* Sample preparation must comply with GB/T 9865.1 standard to ensure correct size and quantity.
* For dynamic testing, the fixture material should be made of materials that are not easy to analyze ozone, such as aluminum.
* The sample swirl/spin speed is controlled at 20-25 mm/s, and the scanning area is not less than 40% of the effective area of the test chamber.
* Check the safety protection device before the test, such as Compressor protection switch, heater over-temperature protection, etc., to ensure normal operation.
After use, drain the water in time to keep the equipment clean and avoid the accumulation of condensate.
* Pay attention to the Power supply voltage and frequency when operating, and ensure that it is within the range of AC220 +/- 5% V /50 +/- 0.5Hz.
Regularly maintain and inspect key components such as refrigeration systems and ozone sensors to extend equipment life.
