Ozone Corrosive Gas Climatic Test Chamber Directly Set Temperature And Time

ASTM D1171 Laboratory Ozone Corrosive Gas Climatic Test Chamber

1. Application

Ozone is rare in the atmosphere but a main factor for rubber crack. This product simulates and strengthens the ozone condition in the atmosphere, studies of the law of ozone reacting on rubber, and quickly identifies and evaluates the anti-ozone aging performance and the anti-ozone agent protection efficiency of rubber. Reference standard: GB/T7762-2003 vulcanized rubber or thermoplastic rubber ozone cracking resistance static tensile test, GB/T 2951.21-2008 cable insulation and sheath material general test method, GB/T 11206-2009 rubber aging surface cracking test method, and other relevant standard test methods.

2. Machine Platform Structure

(1) Refrigeration System

A, Adopt the completely closed original French Taikang compression head

B, Scale type fan cooling condenser.

C, Scale type multi stage automatic load capacity adjustment evaporator

D, Environment-friendly frozen snow species

E, Other accessories: desiccant, oil separator, high voltage protection switch

F, Expansion system: all imported units from Europe and America are used.

(2) Electronic system: (safety protection system)

A, Zero crossing gate fluid power controller SSR 2 set;

B, Compressor overheat protection switch.

C, Compressor overcurrent protection switch;

(3) Air duct system: adopt multi Wing Stainless Steel Zhu long to speed up hot and wet winding.

(4) Heating system: scale type stainless steel electric heating tube.

(5) Control system

A, TEMI880 LED display, touch-type setting data, input in Chinese and English, programmable temperature regulation, humidity controller, touch-type setting data input can be programmed and manual control

B, Degree of resolution: 0.01℃

C, Temperature range: 10℃ ~ 70℃

D, Each segment can be directly set temperature and time.

(6) Inside and outside box insulation layer.

A, Inner box material: SUS#304 1.0 mm thick stainless steel plate.

B, Outer box material: SUS#304 1.2 mm thick stainless steel sand paint

C, Thermal insulation material: PU rigid foam glass wool

3. Working Principle

(1) Constant temperature and ozone control system, SSR control in PID mode.

(2) The temperature signal of the dry ball is input into the controller by A/D conversion, and the PT-type temperature-sensing input signal is fed to the temperature control table. At the same time, the PID controls the SSR heating work, so that the heat and humidity can pass through the uniform test box of the air supply system so as to achieve the constant temperature regulation.

(3) The standard of static tensile test stipulates that the two ends of the sample are clamped on a special clamp, and one kind of elongation is selected to stretch, generally 20%. The clamp is installed on the rotating sample rack. The rotating speed of the sample rack is between (20-25) mm/S, and the temperature is (40±2)℃, and the relative humidity is not more than 65%. The test is carried out under the prescribed ozone concentration. Check the cracking condition of the sample after the prescribed time. The general ozone concentration was selected (50±5) x 10-8.

(4) The dynamic tensile test standard stipulates that the sample fixture can automatically stretch and reset the sample, and the tensile frequency is 0.5±0.025 Hz. The two ends of the sample are fixed on the special fixture to make the sample cyclically stretch from the elongation of 0 to the maximum elongation. The fixture is mounted on the rotating sample rack, and the rotation speed of the sample rack is (20-25) mm/S. Under the prescribed ozone concentration, the fixture is cyclically stretched and repositioned at a temperature of (40±2)℃. Relative humidity is not more than 65%. After the prescribed time, the cracking of the sample is checked. The general ozone concentration was selected (50±5)℃ x 10 - 8. Dynamic tensile tests are divided into continuous dynamic tensile and intermittent dynamic tensile tests.