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Plastic material testing instruments characterize mechanical, thermal, and chemical properties of polymeric materials, from commodity plastics to engineering thermoplastics. Shijiazhuang Zhongshi Testing Machine Co., Ltd. supplies a broad portfolio of test systems that support research and development, quality assurance, and production validation.
Primary Testing Capabilities
Universal Testing Machines (UTM): Perform tensile, compression, flexural, and peel tests on specimens across load ranges from 500 N to 100 kN. Interchangeable grips and fixtures handle films, sheets, injection-molded parts, and extruded profiles.
Impact Testing: Charpy and Izod impact testers evaluate energy absorption and notch sensitivity of plastics under dynamic loading. Fully automated striker positioning and energy measurement yield accurate results for plastics used in safety applications.
Thermal Analysis:
Differential Scanning Calorimetry (DSC) measures melting point, crystallization behavior, and glass-transition temperature with ±0.1 °C resolution.
Thermogravimetric Analysis (TGA) tracks mass loss to determine thermal degradation onset and filler content.
Hardness and Flexibility: Shore D and Rockwell hardness testers gauge surface resistance; mandrel bend and flexural fatigue testers assess crack initiation and propagation under repeated bending.
Rheological Assessment: Melt flow indexers (MFI) determine flow rates of molten polymers at set temperatures and loads, crucial for extrusion and injection processes.
Feature Overview
Load Resolution: 0.01% of full scale on UTMs
Temperature Range: –50 °C to 500 °C on thermal analyzers
Impact Energy Range: 0.5 J–50 J, with 0.01 J resolution
Data Handling: Centralized database, statistical batch reporting, and QC limit integration
Control Software: Graphical interface supporting method libraries, real-time plotting, and regulatory compliance checklists
Industry Applications
Packaging Films: Testing tensile strength, tear resistance, and seal integrity for food and medical packaging
Automotive Components: Validating under-hood plastics for heat aging, creep, and fatigue performance
Electrical Insulation: Assessing dielectric breakdown, mechanical strength, and dimensional stability of cable jackets and connectors
Medical Plastics: Confirming mechanical and thermal stability for disposable devices and implantables
With customized fixture design, preventive maintenance programs, and on-site application support, Shijiazhuang Zhongshi Testing Machine Co., Ltd. ensures laboratories and production lines maintain rigorous plastic material quality control.