Discuss features and uses of the ozone test chamber

Plastics, rubber, paint, textiles, metals, and other items are regularly tested in an ozone test chamber so that manufacturers and academic institutions may see how ozone exposure affects their appearance and performance. It is also called an ozone aging test chamber.

Background
The stratosphere and the troposphere contain trace amounts of ozone, a highly reactive and unstable form of oxygen. Having a significant function in the atmosphere, it has both positive and negative impacts on all forms of life and non-life.
While ozone in the stratosphere shields life and the planet from the sun’s destructive rays, the ozone near the ground in the troposphere is very dangerous to humans and is a leading cause of material degradation and corrosion.
Ozone at ground level is mostly produced when air contaminants react with sunlight. However, some are also emitted from the stratosphere above. Ozone levels may shift over time and from location to location, even in the same environment.
However, ozone concentration has risen recently due to fast urbanization and the rising human population. Because ozone is such a potent oxidant, it typically causes substantial material degradation, leading to economic losses because of higher production and maintenance costs.

Figure: Ozone test chamber

Purpose of ozone test chambers
Predicting how long rubber goods (elastomers) will last in real-world applications requires a sophisticated methodology. The test systems have ozone generating and measurement equipment and other climate simulation elements, including humidity, temperature, and climate sensors and controllers.
It is common practice to install mechanical devices inside the testing environments. They rhythmically apply stretch and twist pressures to the samples to mimic the stresses the materials would experience in real life.

Features of the ozone test chamber
An ozone test chamber OTC-015A is a convenient tool for doing in-house ozone degradation testing on various items. These Ozone Test Chambers are often utilized to examine the effects of ozone on the static tensile deformation of different produced items.
The apparatus functions by exposing the samples to a controlled atmosphere with consistent temperature, relative humidity, and a homogeneous ozone concentration. Corrosion occurs in these environments, and the results may be seen in surface fractures and modifications to other aspects of the items.
LISUN’s ozone test chamber is among the most convenient and cost-effective options. The test chamber’s inner bladder is made of imported high-class stainless-steel plates. In contrast, the exterior bladder is made of plastic-coated A3 steel plates, contributing to the equipment’s durability and dependability. The equipment has a built-in, 360-degree rotating sample rack that it may place in various positions for collecting samples.
The table board of the rotary work table is made of aluminum alloy for greater corrosion resistance. Copper or stainless steel is used for all interior surfaces, making them sleek and simple to wipe off. Also, exhaust vents are installed on the top of the testing chamber to keep the air and ozone levels inside the chamber constant.
The ozone test chamber at LISUN may be rotated out of the way for more dynamic experiments. These portable laboratories are often used as accelerated aging test chambers to assess the rubber’s dynamic stretching capabilities.
Their programmable functionality comes from SSR temperature controls based on PID microprocessors. In addition to a PC connection for simply retrieving recorded data, the machine is equipped with chart recorders or data loggers to save the information.
This apparatus utilizes a UV adsorption analyzer to determine the exact amount of ozone in the testing area. For even more adaptability, the LISUN Rubber Tensile Test Chambers are furnished with circulation fans, heaters, humidifiers, and other accessories.
LISUN Ozone Test Chambers have been certified as meeting worldwide standards. Quality assurance laboratories and R&D facilities often use them because of their cutting-edge, efficient design, excellent quality and safety requirements, and reliable simulation performance during accelerated aging experiments.

Additional features

1. Experimentation chambers for ozone are made entirely of stainless steel.
2. Externally, it is built of iron with a powder coating.
3. The material used for insulation is high-density glass fiber cotton.
4. All-Purpose Bottom with Static Wheel and Foot
5. The material for the panes is chip-conductive multilayer steel glass.
6. Over-oil-pressure safety switch for refrigeration compressor
7. Weak anti-phase defenses. Limit switches on the motor of the circulation fan prevent damage from occurring in the event of an overload.

Using the chamber
Using LISUN’s ozone test chambers OTC-015A, we can observe ozone’s impacts in a simulated environment and see how they scale up in real-world conditions. To achieve this, samples are exposed to a controlled environment (temperature, humidity, airflow) containing a high ozone concentration (produced by the test machine).
It is possible to imitate real-world operating circumstances by placing samples under load or cyclic loading in an ozone chamber. By conducting an expedited ozone test in an ozone test chamber, manufacturers may swiftly bring devices that have undergone design modifications or have different rubber formulas to market.
This article’s featured image depicts a sample of rubber exposed to ozone for 48 hours in the LISUN ozone test chamber, which replicated the cracking that occurs over time due to ozone in the environment.
For instance, if you’re evaluating materials’ reactions to ozone, 48 hours of testing may simulate exposure to the gas at typical atmospheric levels for around 10 years.
Neither exhausting nor filtering out used gases is required, thanks to an internal closed loop air-ozone system that converts the ozone back into oxygen (O2). Since ozone is a very unstable chemical, it must be created on demand using UV light in the test.
The ASTM, BS, and ISO standards, as well as the requirements of individual manufacturers, may serve as the basis for testing. It may adjust product design and material characteristics based on comparing the ozone resistance of various rubber formulations or rubber goods with varied designs.
Suppliers may utilize ozone chamber testing to verify that batches of materials or components meet client standards. Many of the world’s top rubber manufacturers in the automobile industry have purchased ozone test chambers from LISUN. The company has also sold these devices to the ink industry and institutes of higher learning and scientific inquiry.

Figure: Ozone test chamber

Where can our ozone test chambers also be used?

Surface treatment industry
Coatings such as paint, foam, and color printing are applied in the surface treatment sector. CVD processes, for instance, are used to shape silicon surfaces in the semiconductor sector. The ozone test chamber treats various surfaces to increase coating adherence. This process has a quality-enhancing impact and may extend the coating’s lifespan.

Investigations in the medicine, pharmacy, and cosmetic industry
Studies in medicine and pharmacology are crucial to the development of modern healthcare. Medical and technological advancement depends on a thorough understanding of microbial and viral life cycles and cell and plant development.
LISUN’s ozone test chambers OTC-015A allow a detailed analysis of biological processes in various simulated environments. The cosmetics sector widely uses our ozone labs for quality assurance testing.

Why is it beneficial to use ozone gas in ozone testing cabinets?
Ozone is a byproduct of atmospheric chemistry. It shields earth’s living things from the sun’s dangerous ultraviolet rays. The ozone gas, however, reacts negatively with elastomeric compounds, rendering them useless due to their brittleness and cracking.
Our ozone test chambers artificially double the earth’s naturally occurring ozone deposit, significantly speeding up the aging process. High-efficiency ozone generators and accurate ozone analyzers ensure the gas is produced and dosed correctly.
Results from this method accurately represent elastomer product quality and the frequency with which safety inspections and replacement components are required.

Main applications
In the automotive industry
Many rubber components, including door seals, windshield wipers, axle covers, fuel lines, tires, and many more, are utilized in the automobile industry. Environmental conditions, especially air ozone, which destroys the carbon-carbon double bonds in rubber, cause it to crack.
Rubber’s durability and reliability in the automotive industry is an issue of quality and security, particularly in the event of a fuel line or tire rupture.
As a result, every European automaker follows internal testing guidelines based on international and national regulations (DIN, NF, ISO).

For aerospace industry
The tensile stress of rubber and elastomer components is an important safety feature in the aerospace sector. Cable fires triggered by insulation fractures have caused fatal accidents.
Considering how difficult it is to make repairs in orbit (on the Columbus space shuttle), fatigue strength is crucial. Magnetic levitation trains’ power lines are also susceptible to damage (Transrapid Maglev Train Shanghai). Specific guidelines for evaluating cable insulations have been developed.

Cable industry
Standards such as IEC 60811-2-1, which applies to cables and cable insulations but differs significantly from ISO 1431-1, exist. It’s important to remember that the various ozone testing standards do not all correspond to one another.
There are unique characteristics in the turbulence of the flow throughout the chamber and the direction of the longitudinal input onto the samples. The LISUN Ozone chamber is the only one that can replicate these conditions for testing. LISUN will provide further details and guidance on these matters upon request.

Rubber industry
Ozone test chambers evaluate rubber components and samples (ozone climate simulators). According to the application and the applicable testing requirements, the testing circumstances may be configured and simulated.
Test instruments (SIMtools) are employed in simulators when rubber components are subjected to dynamic strain in subsequent usage (tires, windshield wipers). When it comes to building and running tests in a lab, LISUN can provide the necessary advice and support.

Textile industry
As a measure of their overall quality, textiles are ranked by how well they maintain their colors (ISO 105-G03, AATCC109). You’ll need a high-quality ozone analyzer to get consistent results from your tests.

Anti-cavitation processes
The desired coating qualities, such as adhesion, are produced by treating the outer and inner surfaces in an ozone test chamber. The adherence of foams, varnishes, color printing, and coatings is greatly enhanced. Silicon surfaces are customized using CVD methods in the semiconductor sector.
Additives and catalysts for ozone protection development are other common usages for APR process chambers. LISUN offers guidance and assistance for solutions with a focus on practical application.

In the field of life science
Studies on germs and viruses, cell and plant growth, lung testing, animal husbandry, and the creation of pharmaceutical goods in the cosmetics industry may all benefit from using LISUN ozone climate chambers.

Other applications
Although ozone is uncommon in the atmosphere, it is a major factor in rubber cracking; an ozone aging tank recreates the conditions in which ozone is found in the atmosphere so that researchers can observe the effects of ozone on rubber, determine what makes a method effective at resisting ozone and aging, and ultimately implement effective anti-aging measures to extend the useful life of rubber goods.
Tests for static tensile deformation in rubber goods, including vulcanized rubber, thermoplastic rubber, and cable insulating bush, may be conducted in an ozone test room. It may measure rubber’s resistance to ozone aging by observing the degree to which its surface cracks and other qualities change after being exposed to the sealed air in an ozone chamber without light and with a consistent ozone concentration and constant temperature for a certain amount of time.
Rubber, plastics, automobile manufacturing, wire, and cable, packing materials, instruments and meters, medical equipment, civil nuclear power, civil aviation, academic institutions, research labs, inspection, arbitration, and technical supervision departments, and other rubber products are all benefit from the use of ozone test chambers for quality control.
Rubber’s resistance to ozone aging qualities and the shielding effectiveness of anti-ozone compounds may be quickly identified and evaluated in an ozone test chamber OTC-015A, allowing for fast detection and assessment of the need for effective anti-aging treatments to extend the rubber’s useful life.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

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