Briefly describe how ozone is generated in the ozone aging test chamber

The core component of the ozone aging test chamber is an ozone generation device. The general principles of ozone generation include electrochemical method, corona discharge method, and ultraviolet method:

1. Electrochemical method: a method of producing ozone gas by electrolysis of oxygen-containing electrolytes using a DC power source; Ozone produced by electrolysis has the advantages of high concentration, pure composition, and high solubility in water, which will have a good application prospect.

2. Corona discharge method: Simulates the method of ozone generation by natural lightning, and generates corona in the gas through artificially alternating high-voltage electric fields. The free high-energy ions in the corona dissociate O2 molecules and polymerize into oxygen molecules through collision.

3. Ultraviolet method: Artificial ozone production uses photoelectric method to generate wavelength λ= The ultraviolet spectrum of 185 nm (10-9 m) is the most easily absorbed by oxygen to achieve the effect of producing ozone, which is known as an ozone lamp. It has the advantages of high purity, insensitivity to humidity and temperature, and good repeatability. These characteristics are very suitable for ozone to be used as a standard source of ozone for human treatment and instruments, but the disadvantage is high energy consumption;

Main structure of ozone aging test chamber:

The ozone aging test chamber has an air duct interlayer on three sides of the working chamber, distributed with heating humidifiers, circulating fan blades, and other devices. The upper layer of the test chamber is equipped with a balanced exhaust hole, which needs to continuously exhaust the gas in the test chamber to maintain a balance of the gas concentration in the test chamber;

Compared to similar devices in terms of structure and performance, the most prominent feature of this device is that the ozone concentration is directly displayed in LED numbers. The ozone concentration can be set arbitrarily within the range of testing and can be accurately controlled. It also has the functions of convenient operation, intuitive display and time control, over temperature protection, short circuit protection, audio prompt, and automatic power off;

The outer shell of the test chamber is made of high-quality cold rolled sheet electrostatically sprayed plastic, and the inner liner is made of SUS304 # high-quality stainless steel. It is equipped with centrifugal high-quality aluminum alloy fan blades, which have the characteristics of light weight, ensuring that the motor will not shake during operation. A heater is installed under the fan blades, and the heater is made of high-quality nickel chromium wire. During the heating process, the cooling and heating balance speed is fast, thereby ensuring the stability of the temperature of the chamber, Achieving an ideal effect on the uniformity of the test temperature;

A stainless steel turntable with sample furniture is installed in the middle of the working room, and the test pieces are tested according to the standard requirements. A time fixture can be installed on the turntable, a lighting lamp is installed on the top, an electrical control device, an ozone sensor, and an ozone generation system are installed on the right, and a rotary table deceleration system and a static stretching device are installed on the lower part;

The main safety systems of the ozone aging test chamber include an overtemperature protection function, an automatic shutdown function in the event of an alarm in the system, an audio prompt function, a timing function, and a sealed loop for the generation and detection of the entire ozone gas, to ensure the safety issues of users in use.

What harm does the ozone in the ozone aging test chamber do to the human body?

Ozone is highly corrosive. If you inhale ozone, it will pass through your entire respiratory tract and damage the bronchioles and alveoli in your lungs. Repeated exposure to ozone can cause inflammation of lung tissue and cause respiratory tract infections; Exposure to ozone can exacerbate existing respiratory diseases (such as asthma), damage people’s lung function and exercise ability, causing chest pain and coughing; Young children and the elderly are most sensitive to high concentrations of ozone in summer;

Ozone can destroy vitamin E in human skin, causing wrinkles and dark spots on the skin; It can cause neurotoxicity in adults, dizziness, headache, decreased vision, and memory loss; It can also damage the immune function of the human body, induce chromosomal lesions in lymphocytes, accelerate aging, and cause pregnant women to have abnormal babies; The ozone and organic waste gas generated by the heat generation of copier toner are even more powerful carcinogens, which can cause various types of cancer and cardiovascular diseases;

Therefore, ozone is very harmful to human health, for example, it can be used to bleach flour and pulp, and is a powerful bleaching agent; Disinfect drinking water with ozone, which only contains oxygen and has no special odor; It is also used for sewage treatment; Ozone can also be used to purify air, sterilize, and treat industrial waste; Our ozone aging test chamber is designed to simulate and strengthen ozone conditions in the atmosphere, study the action rules of ozone on rubber, quickly identify and evaluate the ozone aging resistance of rubber and the protective effectiveness of ozone resistant agents, and then take effective anti aging measures to improve the service life of rubber products.

Maintenance of ozone aging test chamber:

1. Clean the condenser once every three months. If water cooling is used, in addition to ensuring its inlet pressure and temperature, it is also necessary to ensure the corresponding flow rate, and regularly clean and descale the inside of the condenser to obtain its continuous heat exchange performance; For air-cooled cooling, it is necessary to regularly overhaul the condensing fan and conduct effective decontamination and dust removal to maintain its good ventilation and heat exchange performance;

2. Adhere to the neat appearance of the chamber to prevent dust from entering the chamber; It is prohibited to impact the equipment with external forces; Prohibit chemicals from contacting this equipment; Check the circuit control system before starting each time; Recognition of power supply and grounding wires; Whether the power cord is properly connected according to the standard and indeed grounded; Check whether the overtemperature protector has been set; Ventilation fans should be installed in the laboratory to adhere to indoor ventilation; These are the environmental requirements for placing ozone aging test chambers;

3. “The ozone aging test chamber is generally relatively high, and we recommend placing it in a relatively benign temperature environment. Our empirical temperature values are (temperature range: RT+10 to 65 ℃, temperature uniformity: ± 2 ℃, temperature fluctuation: ± 0.5 ℃, ozone concentration: 10PPHm to 1000PPHm). Laboratories that do not meet this condition must be equipped with appropriate air conditioners or cooling towers;”;

4. In case of equipment failure, it is necessary to appoint special personnel for maintenance, rather than some non professional personnel, to avoid causing danger or greater failure;

Ozone test purpose:

Ozone Test Chamber (or called Ozone Aging Chamber and Ozone Aging Test Chamber) is design according to rubber being sensitive characteristic of to ozone, it simulate the environmental to accelerate the rubber aging process by ozone. It compared to different products(test sample) aging result each other according to the same ozone aging test conditions/standards, and get to comparable aging resistance performance.

OTC-015A_Ozone Test Chamber