QL-010 Large Ozone Aging Test Chamber/Beijing Zhongke Environmental Testing/Quality Assurance

Product use: It can be used for rubber products such as vulcanized rubber, thermoplastic rubber, cable insulation sheaths, etc. Under static tension or continuous dynamic tension deformation, or under intermittent dynamic tension and alternating static tension deformation, it is exposed to sealed and unlit air containing a constant concentration of ozone and a constant temperature test chamber. The samples are tested for a predetermined time to evaluate the ozone aging resistance of the rubber by detecting the degree of cracking or other performance changes that occur on the surface of the samples.

2、 Model and parameters

Reference standards
GB/T 13642-2015 Rubber, vulcanized - Ozone aging resistance test - Dynamic tensile test method;
GB/T 7762-2003 Rubber, vulcanized or thermoplastic - Static tensile test method for resistance to ozone cracking;
GB/T 2951.10-1997 General Test Methods for Insulation and Sheath Materials of Cables;

QL-010 Large Ozone Aging Test Chamber/Beijing Zhongke Environmental Testing/Quality Assurance

3、 Test method

Static tensile test
The standard stipulates that the two ends of the sample should be clamped on a dedicated fixture, and a stretching elongation of 20% should be selected. The fixture should be installed on a rotating sample holder, with a rotation speed between (20-25) mm/S. The test should be conducted at a temperature of (40 ± 2) ℃, a relative humidity of no more than 65%, and a specified ozone concentration. Check the cracking condition of the sample after the specified time. The general selection of ozone concentration is (50 ± 5) × 10-8.

Dynamic tensile test:
1. The standard stipulates that the sample fixture can automatically stretch and reset the sample, with a stretching frequency of 0.5 ± 0.025Hz. The two ends of the sample are clamped on a dedicated fixture, and the sample is cyclically stretched from 0 to the maximum elongation. The fixture is installed on a rotating sample holder, with a rotation speed of (20-25) mm/S. At a temperature of (40 ± 2) ℃, a relative humidity of not more than 65%, and a specified ozone concentration, the fixture is cyclically stretched and reset and rotated with the sample holder for testing. After the prescribed time, check the cracking condition of the sample, and generally select an ozone concentration of (50 ± 5) × 10-8;

4、 Ozone system:

1. The main component of the ozone generator is a silent discharge tube ozone generator (with the characteristics of small noise volume and high purity) with an output control accuracy of ± 10% for 4-20mA
2. Electrode cooling method: air cooling
3. Ozone generation gas source: direct air
4. The ozone detection probe consists of an imported CT electrochemical sensor, housing, electronic circuit board, shielded wire, etc
5. Ozone detection probe output signal: 4-20mA
6. Ozone detection probe collection accuracy: ≤ ±5%F.S

5、 Refrigeration system:
1. Compressor: 1 set of fully enclosed French Taikang
2. Cooling method: air-cooled
3. Refrigerant: R404A, R23 (environmentally friendly)

6、 Box structure:
1. The shell is made of high-quality A3 steel plate, and the surface of the shell is treated with spray coating, making it more smooth and beautiful
2. The inner liner is made of imported high-quality mirror stainless steel plate
3. The bottom of the machine adopts high-quality fixed PU movable wheels

7、 Heating, humidification, and dehumidification system:
A、 Heating system:
1. Adopting far-infrared nickel alloy high-speed heating electric heater
2. The temperature control output power is calculated by a microcomputer to achieve high-precision and high-efficiency electricity efficiency
B、 Humidification system:
1. Built in boiler steam humidifier
2. Equipped with automatic water level compensation and water shortage alarm system
3. Far infrared stainless steel high-speed heating electric heating tube
4. The humidity control adopts P I . D ＋S . S . R， System co channel coordination control
C、 Dehumidification system: using evaporator coil dew point temperature laminar contact dehumidification method

8、 Circuit control system:

1. Imported color LCD touch screen controller
2. Accuracy: 0.1 ℃ (display range)
3. Resolution: ± 0.1
4. Temperature sensor: PT100 platinum resistance tester;
5. Control mode: thermal balance temperature regulation mode;
6. Temperature control adopts P I. D system coordinated control with the same channel
7. Equipped with automatic calculation function, it can reduce the inconvenience caused by manual setting
8. Ozone concentration control adopts imported Siemens PIC programmable module and PLC analog expansion module
9. Display: Equipped with a "4.3-inch" high-definition LCD screen

Free home delivery, after the installation and debugging of the equipment is completed, relevant technical personnel will receive free basic operation training at the user's site, with no limit on the number of people.