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ozone aging test chamber of dynamic experiment principle

2021-11-08 11:02

The dynamic experiment principle of ozone aging test chamber: the vulcanized rubber specimens are exposed to the air and constant temperature in a closed and non-lighted experimental chamber containing stable ozone concentration under the successive dynamic tensile deformation or under the intermittent dynamic tensile and static tensile replacement deformation, and the specimens are tested at a predetermined time to identify the ozone aging resistance of rubber from the degree of cracking or other functional changes of the specimen appearance. function.

Ozone content in the atmosphere is very little but the main factor of rubber cracking, ozone aging chamber simulates and strengthens the ozone conditions in the atmosphere, to study the law of ozone action on rubber, to quickly identify and evaluate the ozone-resistant aging performance of rubber and the method of ozone-resistant agent protection, and then take effective anti-aging measures to improve the service life of rubber products.

Ozone aging tester is used to test the cracking resistance of rubber products under ozone environment, ozone resistance tester, which can control and adjust the concentration of ozone environment to determine the ozone resistance of the test piece.

Ozone aging tester is composed of ozone gas generated by silent high efficiency ozone generator, and a certain amount of treated air, mixed in the exchanger and sent to the tester, UV detector will continuously detect the concentration of ozone online, feedback to the ozone generator control system, so that the control system according to the set value of effective control of ozone generation, so that the test chamber to maintain the appropriate ozone concentration, in the work of the heating and humidification system, Meet all test conditions.


Ozone aging test chamber dynamic tensile test specifications are borrowed from the following: GB528 Determination of tensile function of vulcanized rubber; GB/T 2941 Rubber specimen environmental conditioning and experimental specifications of temperature, humidity and time; GB/T 7762 Ozone aging test of vulcanized rubber static tensile test method; GB 9865 Preparation of vulcanized rubber samples and experiments; GB/T 11206-2009 Vulcanized rubber aging appearance cracking test method. Among them, GB/T 13642-92 refers to the international standard ISO 1431/2-1982 "Vulcanized rubber - ozone cracking resistance - Part 2: dynamic strain test" rules to identify the ozone aging resistance of vulcanized rubber under dynamic tensile deformation of the experimental methods. Applicable to vulcanized rubber in dynamic tensile deformation, exposed to a certain concentration of ozone in the air and a certain temperature and no direct influence of light in the environment of the aging test.

Ozone aging tester technical parameters:

Ozone concentration range: 0~1000pphm adjustable

Relative humidity: 60% RH or more

Temperature: RT+10~+70℃

Ozone generation mode: ozone generator or ultraviolet absorption method

Box air speed: over 2 feet / sec

Ozone concentration fluctuation: 10%

Box volume: 500 × 500 × 600mm

Into the room air flow:A.0-6 cfm;B. 10-20 cfh

Ozone concentration fluctuation:10%



Accessories: static stretching fixture 6 sets

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