The content of ozone in the atmosphere is very small, but it is the main factor for rubber cracking. This product simulates and strengthens the ozone conditions in the atmosphere, studies the action of ozone on rubber, and quickly identifies and evaluates the rubber's anti-ozone aging performance and anti-ozonant protection. Efficiency method.
GB/T7762-2003 Static tensile test method for ozone cracking resistance of vulcanized rubber or thermoplastic rubber
GB/T2951.21-2008 General test methods for cable insulation and sheath materials
GB/T 11206-2009 Rubber Aging Test Surface Cracking Method, and the test methods specified in other relevant standards.
The test method can be divided into "static" and "dynamic" according to the test method and standard. Static means that the sample is stretched and placed in the test box for testing. Dynamic means that the sample is placed on the fixture of the test box and stretched while stretching. While doing the test, the tensile fluctuation is about 5%-45% of the tested sample itself
Structure: All-in-one machine
material
a) Inner box: SUS304 stainless steel plate
b) Outer box: SUS304 stainless steel plate or baking paint (off-white).
c) Insulation: double protection of rigid polyurethane foam + aluminum silicate insulation cotton.
box door
a) Single door, left open
b) Two silicone rubber sealing strips and anti-condensation electric heating device for window frame/door frame.
c) Observation windows W300xH450㎜ and lighting lamps are provided on the doors and windows.
Sample Rack Requirements
a) (Dynamic experiment; optional) - fix the two ends of the sample with clamps under the required elongation, when in contact with ozonated air, the length direction of the sample should be basically parallel to the airflow direction
b) Fixtures should be made of materials that do not easily decompose ozone (such as aluminum).
c) Make the sample rotation speed between (20^-25) mm/s, in a plane perpendicular to the dry air flow, each sample continuously moves along the same path
d) It takes (5~10) min for the same sample to rotate one circle. The scanning area of the sample is at least 40% of the effective area of the Test Chamber.
e) Sample preparation should comply with the provisions of GB/T 9865.1. Test specimens are recommended to be cut from test pieces extruded from new molds, and may be cut from finished products if required. Samples should be at least 3 samples for each test condition. The width of the long standard sample is not less than 10mm, the thickness is 2.0mm±0.2mm, and the length of the sample between the two ends of the clamp before stretching is not less than 40mm.
Standard Static Test Fixture-
a) 3.5. Control Panel - Controller Display
b) Power switch
c) light button,
a) 3.6. Cabinet configuration - equipped with a stainless steel SUS #304 shelf turntable inside
b) φ50mm lead hole Lead hole: 1, and equipped with hole cover and silicone rubber plug.
c) 4 mobile casters
d) 4 horizontal fixed tripods
e) There is a drainage hole at the bottom of the rear part of the box to facilitate the drainage of condensed water of the unit;
Adjustment method
Circulation fan-FLOW THROW air supply mode; horizontal diffusion and vertical heat exchange arc circulation.
Power-saving motor + stainless steel extended shaft connected to multiple centrifugal circulation fans.
heater
Control mode - finned heat dissipation pipe-shaped stainless steel electric heater heating.
-ID adjustment, actuator: solid state relay.
1. Working method: mechanical refrigeration/air cooling.
2. Control mode : The controller of the control system automatically adjusts the operating conditions of the refrigerator according to the test conditions.
3. Compressor : low-temperature effective full-seal compressor.
4. Evaporator : Finned multi-stage automatic load capacity adjustment.
5. Condenser : Wind type condenser.
6. Expansion system : refrigeration system with automatic capacity control
7. Refrigerant : Environmentally friendly refrigerant R404 (ozone depletion index is 0).
8. Refrigeration process : Nitrogen protection welding, double-stage rotary vane pump vacuuming to ensure the internal cleanliness of the refrigeration system, a water tray is designed at the bottom of the compressor, and the condensed water is discharged out of the box through the drain pipe at the rear of the box.
9. Refrigeration accessories
a) Expansion valve
b) Solenoid valve
c) filter
d) Pressure controller
e) Stop valve
f) Oil separator
10. Accessories : desiccant, oil separator, refrigerant flow window, repair cutting, high pressure protection switch.
Ozone Generator - (use Voltage silent discharge tube to generate ozone)
Ozone sensor - ozone concentration sensor, can achieve precise control
Ozone Exhaust System - After the experiment is completed, the ozone in the experimental box is exhausted to the outside through a dedicated exhaust fan and air duct
Ozone Flow Regulator - Accurate adjustment with high-precision glass flow rotameter
1. Sensor : (using Voltage silent discharge tube to generate ozone)
2. Controller : Ozone concentration sensor, which can realize precise temperature control, 7-inch color LCD touch-control human-machine interface controller, large field of view screen, with screen locking function. Chinese and English switching
3. Controller specification
a) Temperature resolution : 0.1.
b) Setting range of each period of time : 0~530 hours can be set freely.
c) Temperature input signal
d) PID control parameter setting, PID automatic calculation.
4. Screen display function
a) It adopts the screen-conversation type of graphic control software, and the options are directly touched on the screen: including program setting, curve display, historical data, manual operation, automatic operation, auxiliary setting, etc.
b) Display the execution status, temperature and time setting value, remaining time and remaining cycle times.
c) It has a separate program editing screen, which can input temperature, time and cycle times.
d) The temperature program setting is displayed as a graphic curve, and it has the function of displaying the program curve in real time.
e) Display the fault state and explain the troubleshooting method.
f) Temperature setting (SV) and actual (PV) values are directly displayed.
g) The backlight of the screen can be adjusted, and the screen display protection function can be used for timing and closing settings.
5. Program capacity
a) Control function - the production of the program adopts a conversational function.
b) Number of cycles: up to 1-9999 times adjustable.
c) Usable program group: maximum 50 PATTEN (that is, 50 test specifications can be set and stored independently)
d) It has power-off program memory, automatically starts and continues to execute the program function after power is restored.
e) Graphical curves can be displayed in real time during program execution.
f) It has the function of scheduled startup and shutdown.
g) It has date and time adjustment functions.
a) 8.1. Refrigeration protection - compressor overheating protection switch
b) Compressor high pressure protection switch
c) Compressor overcurrent protection switch
a) 8.2. Heating protection - heater surface temperature over-temperature protection
b) Heater short circuit, overload protection device
a) 8.3. Other protections - cycle motor overheating protection
b) Condensing fan overheating protection
c) High temperature, low temperature, over temperature protection
d) reverse phase, phase loss protection device,
e) No fuse switch overload protection.
f) Smoke alarm complete machine power failure protection device.
g) Line fuse and full sheath terminal
1. Shelves
2. Shelf track
3. Power test hole
4. Power cord
5. Outlet
6. Air source interface
7. Mobile casters
8. Fixed foot cup
9. Maintenance Manual
10. Controller manual
(The above individual parameters may be adjusted) (The picture is for reference, the actual product shall prevail)