Static Ozone Aging Test Chamber

The static ozone aging test chamber is a device used to simulate the aging performance of materials under static tensile deformation in a constant ozone concentration environment. It is widely applied in evaluating the ozone resistance of non-metallic materials such as rubber, plastics, and coatings. The following are its key points:

I. Working Principle

Ozone Generation: Ozone is produced by an ozone generator (e.g., high-pressure silent discharge tube type), converting oxygen in the air into ozone to create a high-concentration ozone environment.

Environmental Control: Combined with a precise temperature and humidity control system, it simulates the complex conditions (e.g., temperature, humidity, ozone concentration) that materials may encounter in actual use.

Sample Testing: The material sample is stretched to a predetermined elongation rate, fixed inside the test chamber, and exposed to the set ozone environment. The strong oxidizing properties of ozone accelerate material aging. Regular inspections of surface cracking or performance changes are conducted to evaluate its ozone resistance.

II. Equipment Structure

Chamber Body:

Processed by CNC machine tools, the inner chamber is made of high-quality stainless steel (e.g., SUS304 mirror panel), and the outer chamber is treated with sprayed plastic on A3 steel plate, ensuring an aesthetically pleasing and corrosion-resistant design.

The insulation layer is reasonably designed (e.g., 100mm thick) and filled with high-quality ultra-fine glass fiber insulation cotton to ensure temperature uniformity.

Sealing System:

Imported sealing materials and a unique silicone sealing structure are used between the door and door frame to ensure the airtightness of the test chamber.

The observation window is made of conductive film insulated glass (e.g., size 200×300mm), facilitating the observation of sample conditions.

Air Duct System:

Designed with a dual-circulation system, consisting of a long-axis axial flow fan, stainless steel multi-blade centrifugal impeller, and circulation ducts, ensuring uniform temperature distribution inside the chamber.

Heating/Humidification/Dehumidification System:

The heater uses stainless steel 316LI finned electric heating tubes, providing fast heating and uniform temperature distribution.

The humidification system is an externally isolated, all-stainless-steel boiler-type shallow surface evaporation humidifier, combined with an evaporator coil dehumidification method, achieving precise humidity control.

Control System:

Equipped with a PID microcomputer SSR temperature controller or a high-resolution LCD touch screen, allowing setting and display of parameters such as temperature, humidity, and ozone concentration.

Features an imported Siemens PLC programmable logic controller and measurement modules for automated control and data recording.

III. Technical Parameters

Temperature Range: RT+10°C to 80°C (customizable for lower temperatures, varying by model).

Humidity Range: 65% to 98% R.H. (standard devices are shipped without humidity control; if humidity control is required, the ozone sensor warranty is void).

Ozone Concentration: 10 to 500 pphm.

Temperature Fluctuation: ±0.5°C.

Ozone Control Accuracy: ±10%.

Sample Rack Rotation Speed: 360-degree rotating sample rack (rotation speed 1 rpm), ensuring uniform ozone exposure on the sample surface.

IV. Application Areas

Rubber Products: Such as tires, seals, cable insulation sheaths, etc., to evaluate their crack resistance in ozone environments.

Plastic Products: Such as pipes, films, packaging materials, etc., to test their ozone oxidation resistance.

Coatings and Textiles: To study the degradation effects of ozone on coatings or fibers and optimize formulation designs.

V. Advantages

Accelerated Aging: Simulates high-concentration ozone environments to shorten testing cycles and quickly evaluate material lifespan.

Controllable Parameters: Precise control of ozone concentration, temperature, humidity, and other parameters ensures reproducible test results.

Compliance with Standards: The equipment design meets international standards such as GB/T7762 and GB/T13642, fulfilling quality control and R&D requirements.

User-Friendly Operation: Features a color LCD touch screen controller supporting time setting, parameter display, and data recording.

Easy Maintenance: The chamber is reasonably designed for easy cleaning and repair, extending the equipment's service life.