Ozone Aging Test Chamber for Rubber Products
| Brand | OEM |
|---|---|
| Origin | Imported |
| Manufacturer Type | Authorized Distributor |
| Price | USD 6,300 (FOB) |
| Temperature Range | 25–40 °C |
| Humidity Range | 30–65 %RH |
| Ozone Concentration Range | 50–1500 pphm |
| Temp. Uniformity | ±0.5 °C |
| Sample Rack | 360° continuous rotation at 1 rpm |
| Gas Flow Velocity | 8–16 mm/s |
| Control System | Weilun color touchscreen + Siemens S7-1200 PLC |
| Ozone Sensor | Non-dispersive UV absorption type, ≥5-year service life |
| Compliance | GB/T 7762–2003, GB/T 2951.21–2008, GB/T 11206–2009, ISO 1431-1:2004 |
Overview
The Ozone Aging Test Chamber for Rubber Products is an engineered environmental test system designed to evaluate the ozone resistance of elastomeric materials under controlled, accelerated aging conditions. It operates on the principle of exposing rubber specimens to precisely regulated concentrations of ozone (O3) within a thermally and hygrostatically stabilized chamber — replicating the oxidative degradation mechanism responsible for surface cracking in real-world atmospheric exposure. Unlike general-purpose climate chambers, this instrument integrates a closed-loop ozone generation and monitoring architecture based on silent discharge technology and non-dispersive ultraviolet (NDUV) absorption spectroscopy, ensuring metrological traceability, operator safety, and long-term measurement stability. The system supports both static and dynamic testing modes per ISO 1431-1:2004, enabling standardized assessment of crack initiation and propagation under tensile strain or rotational motion.
Key Features
- Stainless steel test chamber conforming to ISO 1431-1 structural requirements, with fully sealed gas circulation loop to prevent ozone leakage and ensure personnel safety.
- Adjustable ozone concentration range from 50 to 1500 pphm, digitally controlled via PID auto-tuning algorithm with real-time feedback from NDUV sensor.
- Motor-driven sample rack delivering continuous 360° rotation at 1 rpm — compliant with dynamic test geometry defined by cycloidal trajectory per GB/T 7762–2003 Annex A.
- Integrated ozone analyzer with ≥5-year operational lifetime, 4–20 mA analog output, RS232 digital interface, and dedicated calibration port for third-party metrological verification.
- High-precision environmental control: temperature (25–40 °C, ±0.5 °C stability), humidity (30–65 %RH), and laminar gas flow (8–16 mm/s) independently regulated and logged.
- Industrial-grade control platform featuring Weilun 7-inch color HMI and Siemens S7-1200 PLC — supporting programmable test profiles, event logging, and audit-ready data export.
Sample Compatibility & Compliance
This chamber accommodates standard dumbbell-shaped, ring, or strip specimens per ASTM D1149 and ISO 1431-1. Custom interior dimensions (from 80 L to 1000 L) allow testing of finished rubber components including seals, hoses, tires, and gaskets. All operational parameters adhere to internationally recognized standards for rubber ozone resistance evaluation: GB/T 7762–2003 (Chinese national standard), GB/T 2951.21–2008 (cable insulation testing), GB/T 11206–2009 (vulcanized rubber aging), and ISO 1431-1:2004 (determination of ozone resistance — part 1: static strain method). The closed-loop gas path design meets OSHA PEL and EU Directive 2004/10/EC occupational exposure limits when operated per manufacturer instructions.
Software & Data Management
Data acquisition and control are managed through embedded firmware with timestamped logging of ozone concentration, temperature, humidity, elapsed time, and rack position. Export formats include CSV and PDF reports compatible with laboratory information management systems (LIMS). The system supports optional 21 CFR Part 11-compliant software add-ons for electronic signatures, user access levels, and audit trail generation — suitable for GLP and GMP-regulated quality control laboratories. Calibration records, maintenance logs, and test run metadata are stored internally with password-protected read/write permissions.
Applications
- Accelerated evaluation of antiozonant efficacy in compounded natural rubber (NR), styrene-butadiene rubber (SBR), nitrile rubber (NBR), and ethylene propylene diene monomer (EPDM).
- Quality assurance of automotive sealing systems subjected to long-term outdoor exposure.
- R&D screening of new polymer formulations for improved ozone resistance prior to field trials.
- Validation of curing process parameters affecting crosslink density and surface oxidation susceptibility.
- Comparative benchmarking of rubber grades across supplier qualification programs.
FAQ
What ozone concentration accuracy is achievable across the full 50–1500 pphm range?
The NDUV sensor provides ±5 pphm absolute accuracy at low concentrations (<200 pphm) and ±3% of reading above 200 pphm, verified annually per ISO/IEC 17025-accredited calibration protocols.
Can the chamber be integrated into an existing lab automation network?
Yes — RS232 serial interface and Modbus TCP support enable bidirectional communication with SCADA systems, MES platforms, and centralized test management software.
Is dynamic testing mode compliant with ISO 1431-1:2004 Clause 7.2?
Affirmative. The 1 rpm constant-speed rotation satisfies the requirement for “continuous movement without reversal” and maintains uniform strain distribution across the specimen gauge length.
Does the system include documentation for IQ/OQ validation?
Standard delivery includes Factory Acceptance Test (FAT) report, calibration certificates for ozone sensor and PT100 probes, and electrical safety certification (CE-marked power module). URS-aligned IQ/OQ protocol templates are available upon request.
What maintenance intervals are recommended for the ozone generator and sensor?
Silent discharge tubes require replacement every 12 months under continuous operation; NDUV sensor optical path cleaning is advised quarterly, with full recalibration recommended biannually or after any physical impact or environmental shock.
