Ozone Aging Test Chamber QY-Series

Overview

The QY-Series Ozone Aging Test Chamber is an engineered environmental test system designed for accelerated evaluation of elastomeric and polymeric materials under controlled ozone exposure. It operates on the principle of dynamic or static ozone-induced cracking assessment—where specimens are subjected to defined concentrations of ozone (50–1500 ppm) within a thermally and hygroscopically regulated stainless-steel reaction chamber. The chamber utilizes silent discharge ozone generation and non-dispersive ultraviolet (UV) absorption spectroscopy for real-time, traceable ozone concentration monitoring. Unlike open-loop systems, this instrument employs a fully sealed gas recirculation circuit—ensuring operator safety, minimizing ambient ozone leakage, and enabling precise, repeatable aging profiles required for R&D validation and quality control in rubber compounding, automotive sealing, cable insulation, and aerospace elastomer development.

Key Features

• Fully enclosed stainless-steel test chamber with electropolished interior surface to prevent catalytic ozone decomposition and ensure long-term corrosion resistance.
• Silent discharge ozone generator with stable output across full concentration range; no nitrogen oxide byproducts or UV lamp degradation concerns.
• Non-dispersive UV ozone analyzer calibrated per ISO 1431-1 Annex B; provides continuous, drift-compensated measurement with ≥5-year sensor service life and NIST-traceable calibration support.
• Integrated sample rotation mechanism delivering true cycloidal motion at 1 rpm (360°/min), compliant with static and dynamic test modes per GB/T 7762 and ISO 1431-1.
• Advanced dual-loop PID temperature/humidity control using Siemens S7-1200 PLC and Weilun 7-inch color touchscreen HMI—supporting auto-tuning, data logging, and user-defined ramp-soak profiles.
• Dedicated metrology port for third-party calibration verification; all gas pathways constructed from ozone-resistant fluoropolymer tubing and EPDM-free seals.
• Comprehensive electrical safety architecture including earth leakage protection, thermal cutouts on heating elements and drive motors, and redundant overcurrent interruption.

Sample Compatibility & Compliance

The QY-Series accommodates standard dumbbell, ring, and strip specimens per ASTM D1149 (equivalent to ISO 1431-1) and supports custom fixture integration for non-standard geometries up to 100 × 100 × 100 cm (QY-1000 model). All models meet the mechanical and environmental requirements specified in GB/T 7762–2003 (determination of ozone cracking resistance of vulcanized rubber), GB/T 2951.21–2008 (electrical insulating materials), and ISO 1431-1:2004 (rubber—resistance to ozone cracking—part 1: static strain). The sealed-loop design satisfies occupational health requirements outlined in OSHA 29 CFR 1910.1200 and EU Directive 2004/37/EC for hazardous substance handling. Optional IQ/OQ documentation packages are available for GLP and GMP-regulated laboratories requiring audit-ready validation records.

Software & Data Management

The embedded control firmware supports time-stamped data acquisition at 1-second intervals for ozone concentration, chamber temperature, relative humidity, and elapsed test duration. Logged data exports directly to CSV via USB or RS232 interface, compatible with LIMS integration and statistical process control (SPC) platforms. The system includes built-in audit trail functionality compliant with FDA 21 CFR Part 11 requirements when operated with optional electronic signature module. Remote monitoring is enabled through Modbus TCP protocol for integration into centralized facility SCADA systems. Calibration history, alarm logs, and user access records are retained for ≥12 months without external storage.

Applications

• Evaluation of crack initiation and propagation kinetics in natural rubber (NR), styrene-butadiene rubber (SBR), nitrile butadiene rubber (NBR), and ethylene propylene diene monomer (EPDM) compounds.
• Validation of antioxidant and antiozonant package efficacy during rubber formulation development.
• Quality conformance testing for automotive weatherstrips, tire sidewalls, engine mounts, and hydraulic hoses.
• Accelerated aging studies for wire & cable jacketing materials under combined thermal-ozone stress.
• Support of ISO/IEC 17025 accredited testing laboratories performing third-party certification per IEC 60811-501 and UL 1581 Section 1000 series standards.

FAQ

What ozone concentration accuracy is achievable across the 50–1500 ppm range?
The UV absorption sensor delivers ±5% full-scale accuracy per ISO 1431-1 Annex B, verified annually using certified ozone reference gas standards.
Can the chamber operate continuously for extended durations (e.g., 168+ hours)?
Yes—continuous operation is supported with scheduled maintenance intervals every 2000 operating hours; ozone generator tubes and UV lamps are field-replaceable with documented procedures.
Is humidity control active during ozone exposure, or is it set-and-hold only?
Humidity is actively regulated via chilled-mirror dew point control and steam injection, maintaining setpoint stability within ±3% RH during dynamic ozone cycling.
Does the system provide compliance documentation for ISO 17025 or FDA audits?
Factory-issued IQ/OQ protocols, calibration certificates traceable to NPL/PTB, and electronic audit logs are available upon request as part of formal validation support services.
How is ozone destruct handled at test completion?
An integrated catalytic ozone destructor (MnO₂-based) reduces residual ozone to ambient oxygen prior to chamber door opening, meeting OSHA PEL thresholds (<0.1 ppm) within 90 seconds.