Jiubin JB-121A Universal Testing Machine for Elongation at Break of Flexible Polymeric Foam Materials
| Brand | Jiubin |
|---|---|
| Model | JB-121A |
| Type | Electromechanical Universal Testing Machine |
| Origin | Shanghai, China |
| Instrument Category | Domestic |
| Commercial Role | Authorized Distributor |
| Price Range | USD 7,000 – 14,000 (FOB Shanghai) |
| Applicable Standard Compliance | ASTM D3574, ISO 1798, GB/T 6344, GB/T 20672 |
Overview
The Jiubin JB-121A Universal Testing Machine is an electromechanical force-displacement system engineered for precise tensile characterization of low-modulus, highly deformable polymeric foam materials—particularly flexible open-cell and closed-cell foams used in automotive seating, medical cushioning, packaging, and acoustic insulation. It operates on the principle of controlled uniaxial tension under constant crosshead speed, measuring load via high-accuracy S-type load cells and displacement via non-contact encoder-based crosshead positioning. The system conforms to standardized test protocols for elongation at break (εB), tensile strength, and stress-strain behavior up to rupture, with real-time data acquisition synchronized at ≥1 kHz sampling rate. Its structural architecture integrates a rigid two-column frame, precision-ground ball-screw drive, and adaptive servo-motor control—ensuring mechanical stability, minimal deflection under load, and high reproducibility across repeated cycles.
Key Features
- Electromechanical actuation with programmable crosshead speeds ranging from 0.001 mm/min to 500 mm/min, enabling compliance with both quasi-static (ASTM D3574 Method A) and accelerated (ISO 1798 Annex B) test regimes.
- Load cell options spanning 10 N to 5 kN full-scale, calibrated to ISO 7500-1 Class 0.5 accuracy, with automatic range switching and thermal drift compensation.
- Dual-clamp configuration with pneumatic or manual wedge-action grips optimized for low-compliance foam specimens (typically 100 × 25 mm dumbbell or rectangular strips per GB/T 6344).
- Integrated extensometer interface supporting clip-on or video-based strain measurement for true strain calculation—critical for materials exhibiting >300% elongation before failure.
- Modular controller with Ethernet and USB 2.0 connectivity, supporting remote operation, firmware updates, and synchronization with external environmental chambers (e.g., ±20 °C to +80 °C thermal conditioning).
Sample Compatibility & Compliance
The JB-121A accommodates standard foam geometries defined in ASTM D3574 (Type A, B, C, E foams), ISO 1798 (flexible polyurethane and latex foams), and Chinese national standards GB/T 6344 and GB/T 20672. Specimen thicknesses from 10 mm to 50 mm are supported using adjustable grip spacing (max. 1,000 mm travel). All test routines are pre-configured to enforce minimum sample conditioning requirements (23 °C ± 2 °C, 50% RH ± 5%, ≥16 h per ISO 291). The system supports audit-ready documentation aligned with GLP environments, including user-access-level permissions, electronic signatures, and raw-data export in CSV and XML formats compliant with FDA 21 CFR Part 11 requirements when paired with validated software modules.
Software & Data Management
Control and analysis are executed via Jiubin’s proprietary TestMaster v4.2 software—a Windows-based platform certified for IEC 62304 Class B medical device software development lifecycle. It provides ISO 17025-aligned test method templates, real-time curve overlay (stress vs. strain, modulus derivation), automatic yield point detection (0.2% offset method), and breakpoint identification per ASTM D3574 Section 6.3. Data integrity safeguards include timestamped audit trails, version-controlled method libraries, and encrypted database storage. Export formats include PDF reports with embedded metadata (operator ID, calibration certificate IDs, environmental logs), as well as ASCII-compatible files for integration into LIMS platforms such as LabWare or Thermo Fisher SampleManager.
Applications
This instrument serves quality control laboratories and R&D departments evaluating mechanical resilience of viscoelastic polymer foams across multiple industrial sectors: automotive OEMs assessing seat cushion durability (e.g., BYD, Geely, FAW-Volkswagen); pharmaceutical packaging validation (e.g., Kangmei Pharma, ZYD Pharmaceutical); academic research on novel elastomeric composites (e.g., Beijing Graphene Institute, Shanghai Jiao Tong University); and regulatory testing by third-party certification bodies (e.g., CTI, Huace Testing, NAST). It is routinely deployed for comparative studies of formulation effects—such as isocyanate index variation in PU foams—or aging behavior after UV/thermal cycling per ISO 188.
FAQ
Does the JB-121A support ASTM D3574 Method E (compression set) testing?
No—this model is configured exclusively for tensile testing. Compression set evaluation requires a separate compression fixture and load frame alignment per ASTM D3574 Sections 7–8.
Can video extensometry be retrofitted post-purchase?
Yes—optional high-resolution machine vision kits (12 MP, 60 fps) with edge-detection algorithms are available as field-upgrade modules with NIST-traceable validation packages.
Is firmware validation documentation provided for GMP environments?
Yes—each unit ships with IQ/OQ protocol templates, calibration certificates traceable to CNAS-accredited labs, and a software verification report per GAMP 5 Annex 11.
What is the maximum specimen width accommodated by standard grips?
Standard pneumatic grips accept specimens up to 50 mm wide; custom jaw faces (e.g., serrated rubber-coated) are available for widths up to 100 mm.
How often does the load cell require recalibration?
Annual recalibration is recommended; however, internal self-diagnostic routines verify zero-balance and linearity before each test sequence, flagging deviations exceeding ±0.1% FS.
