Zhulan ZLHS-150-CY Ozone Aging Test Chamber for Paper & Polymer Industries
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | ZLHS-150-CY |
| Price | USD 5,400 (FOB Shanghai) |
| Internal Chamber Dimensions (W×H×D) | 500 × 600 × 500 mm |
| External Dimensions | 700 × 1720 × 1480 mm |
| Power Consumption | 4.0 kW |
| Temperature Range | 0–70 °C |
| Temperature Uniformity | ±0.5 °C |
| Humidity Range | 30–65 %RH |
| Ozone Concentration Range | 50–500 pphm (parts per hundred million) |
| Gas Flow Velocity | 12–16 mm/s |
| Sample Rack | 360° continuous rotation at 1 rpm |
| Ozone Generation | Silent discharge tube type (standard), UV absorption type optional |
| Ozone Monitoring | QUA non-dispersive UV ozone analyzer (trace-level accuracy per ISO 1431-1) |
| Measurement Principle | Beer-Lambert law-based optical absorption |
| Air Purification System | Activated carbon adsorption + silica gel drying tower + thermal constant-temperature bath |
| Gas Path Design | Parallel ozone flow relative to specimen surface |
| Control System | AI digital PID controller with SSR output |
| Timer Resolution | 0.1 s (programmable up to 9999 h 59 min 59 s) |
| Data Interface | RS232 serial port, 4–20 mA analog output |
| Optional | PC-based real-time monitoring & data logging software with print/export capability |
| Electrical Supply | 220 VAC ±10%, 50/60 Hz |
| Safety Protections | Leakage current protection, over-temperature cutoff, motor overheat detection, over-current circuit breaker |
Overview
The Zhulan ZLHS-150-CY Ozone Aging Test Chamber is an engineered environmental simulation system designed for accelerated evaluation of ozone-induced degradation in polymeric materials—particularly rubber compounds, elastomeric seals, paper coatings, and cellulose-based composites used in the pulp & paper, packaging, automotive, and cable industries. It operates on the principle of controlled gaseous ozone exposure under regulated temperature and humidity conditions, replicating atmospheric oxidative stress mechanisms that initiate chain scission, surface cracking, and crosslink density changes in susceptible polymers. Unlike natural aging—which may require months or years—the ZLHS-150-CY enables reproducible, time-compressed assessment by maintaining precise ozone concentrations (50–500 pphm) within a thermally stable chamber (0–70 °C, ±0.5 °C uniformity), thereby supporting comparative material screening, antioxidant efficacy testing, and formulation optimization in accordance with ASTM D1149, ISO 1431-1, and GB/T 7762.
Key Features
- Stainless steel inner chamber (SUS304) with cold-rolled steel outer enclosure finished in electrostatic epoxy powder coating for corrosion resistance and structural integrity.
- High-accuracy non-dispersive ultraviolet (NDUV) ozone analyzer (QUA series) compliant with ISO 1431-1 calibration traceability, delivering real-time ozone concentration feedback with <±2% full-scale error.
- Beer-Lambert optical absorption measurement system integrated into the gas loop—internationally recognized for linearity, stability, and minimal drift across extended operation cycles.
- Dual-stage air purification train: activated carbon adsorption column removes residual organics and NOx; silica gel desiccant tower ensures dew point control below −20 °C; thermostatically stabilized bath maintains consistent gas temperature pre-entry.
- Horizontally oriented, laminar ozone flow path aligned parallel to test specimens—ensuring uniform reactive species distribution and eliminating boundary-layer stagnation effects.
- Motor-driven 360° continuously rotating sample rack (1 rpm) minimizes positional bias and enhances exposure homogeneity—critical for evaluating directional vulnerability in anisotropic paper sheets or extruded profiles.
- Imported microprocessor-based PID controller with LED display, SSR solid-state relay output, and programmable ramp/soak profiles for multi-step aging protocols.
- Comprehensive safety architecture including earth-leakage circuit interrupter (ELCI), dual independent over-temperature cutouts, thermal fuse on heating elements, and overload protection for drive motors.
Sample Compatibility & Compliance
The ZLHS-150-CY accommodates flat-sheet specimens up to 400 mm × 400 mm (standard fixture), with customizable clamping options for rolled paper cores, vulcanized rubber strips (per ASTM D1149 specimen dimensions), and composite laminates. Its operational envelope satisfies key regulatory frameworks governing material durability testing: ISO 1431-1 (rubber—determination of resistance to ozone cracking), ASTM D1149 (standard test method for rubber deterioration—ozone cracking in air), and GB/T 7762 (Chinese national standard equivalent). The chamber’s ozone generation and monitoring subsystems are validated against NIST-traceable reference standards; all electrical components conform to IEC 61000-6-3 (EMC immunity) and IEC 61000-6-4 (emission limits). For GLP/GMP environments, optional audit-trail-enabled software supports 21 CFR Part 11-compliant electronic records when paired with validated PC hardware.
Software & Data Management
An optional Windows-compatible monitoring application provides real-time visualization of ozone concentration, chamber temperature, humidity, elapsed time, and alarm status via RS232 serial interface. Logged datasets include timestamped values at user-defined intervals (1 s to 60 min), exportable in CSV or Excel format for statistical analysis (e.g., Weibull lifetime modeling, Arrhenius extrapolation). The software supports multi-channel trending, pass/fail threshold alerts, and automatic report generation—including header metadata (operator ID, test ID, calibration certificate number). All data writes are write-once, append-only, with SHA-256 hash integrity verification—meeting ALCOA+ principles for data reliability in regulated quality systems.
Applications
- Evaluation of ozone resistance in kraft paper coatings, barrier laminates, and biodegradable cellulose films used in food packaging.
- Accelerated aging of EPDM, CR, and SBR rubber components in paper mill rollers, conveyor belts, and sealing gaskets exposed to ozone-rich industrial atmospheres.
- Validation of antioxidant packages (e.g., waxes, p-phenylenediamines) in synthetic elastomers destined for outdoor paper-handling equipment.
- Correlation studies between laboratory ozone exposure and field performance of coated paperboards subjected to urban ambient ozone levels (40–120 pphm).
- Pre-compliance screening for ISO 1431-1 certification prior to third-party validation testing.
FAQ
What ozone concentration range does the ZLHS-150-CY support, and how is it calibrated?
The chamber delivers 50–500 pphm ozone using silent discharge generation, with continuous verification via NDUV spectroscopy. Calibration is performed annually using certified ozone transfer standards traceable to NIST SRM 2693.
Can the unit operate in dynamic mode with specimen rotation while maintaining ozone homogeneity?
Yes—the 1 rpm rotational rack is mechanically decoupled from the gas delivery manifold, and laminar flow design ensures <±3% spatial ozone variation across the full test plane per ISO 1431-1 Annex B.
Is humidity control mandatory during ozone exposure testing?
Humidity is independently adjustable (30–65% RH) to simulate specific service environments; however, many polymer standards (e.g., ASTM D1149) specify dry-air operation—achieved via full activation of the silica gel dryer and thermal bath.
Does the system meet electromagnetic compatibility requirements for integration into automated lab networks?
Yes—compliant with IEC 61000-6-3 (immunity) and IEC 61000-6-4 (emissions); RS232 interface includes galvanic isolation to prevent ground-loop interference in distributed test farms.
What maintenance intervals are recommended for the ozone generator and analyzer?
Discharge tubes require replacement every 6,000 operating hours; UV lamp in the QUA analyzer every 12 months; activated carbon and silica gel media every 3 months under continuous use—logbook templates provided in the user manual.
