Key Features & Benefits
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Multi-Station Efficiency: Conduct simultaneous tests across up to 6 stations to maximize lab productivity.
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Precision Control: Advanced microprocessor technology ensures temperature accuracy to ±0.5°C and displacement resolution of 0.001mm.
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Full Automation: Features electrical lifting for test frames and weights, reducing manual labor and improving operator safety.
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Advanced Data Management: Dedicated software provides real-time graphing, data logging, and professional report generation.
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Rapid Throughput: Integrated water cooling coils quickly return the oil bath to starting temperatures for consecutive testing.
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Compliance Ready: Fully conforms to international testing standards, including ISO 75, ISO 306, ASTM D648, and ASTM D1525.
The Melt Flow Indexer is designed according to ISO1133, ASTM D1238. It is suitable for determining the MFR and MVR of thermoplastic.
Not only the machine can have low melt temperature, but also it has been widely used in testing the high melt temperature plastics such as PC, Fluor plastics and nylon, PE, PP, POM, PS, ABS resin plastics with mini printer to print the test results.
Using Delta brand PLC (Programmable Logic Controller), it has better stability and reliability.
Specification:
| Description |
Technical parameters |
| Temperature range |
Room temperature~450℃ |
| Temperature accuracy |
±0.5℃ |
| Resolution ratio |
0.1℃ |
| Inner diameter of the cylinder |
Ф9.550±0.025mm |
| Diameter of the piston head |
Ф9.475±0.015mm |
| Length of the piston head |
6.350±0.100mm |
| Load level |
Calibrated loads are to total value stamped on weight with correct piston (0.325kg,1.2kg, 2.16kg, 3.8kg. 5.0kg, 10.00kg,12.5kg, 21.6kg) |
| Diameter of mould |
φ2.095±0.005mm |
| Length of mould |
8.000±0.025mm |
| Cutting method |
Manual and automatic control |
| Length of the drum |
160mm |
| Working environment |
Temperature:10~40℃; Relative Humidity: 30%-80% |
| Power supply |
1P, 220V, 50/60HZ, 450W |
| Net weight |
60kg |
Frequently Asked Questions (FAQ)
What is the difference between HDT and Vicat softening temperature?
A: While both measure thermal resistance, they evaluate different physical properties. Heat Deflection Temperature (HDT) measures the temperature at which a specimen bends under a specific flexural load, indicating structural load-bearing capacity. Vicat Softening Temperature (VST) identifies the point where a material’s surface loses its hardness, measured by a needle penetrating 1mm into the plastic. Generally, Vicat values are higher than HDT for the same material.
Which international standards does this HDT Vicat tester comply with?
A: This machine is engineered to meet and exceed global testing protocols, including:
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HDT: ISO 75 and ASTM D648.
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Vicat: ISO 306 and ASTM D1525.
Compliance ensures that your material data sheets (TDS) are internationally recognised for quality assurance and export.
How does glass fiber reinforcement affect HDT and Vicat results?
A: Adding glass fiber reinforcement significantly increases the HDT of a polymer—often by $100$°C or more—because the fibers provide structural rigidity that resists bending. However, the Vicat softening point may see a less dramatic increase, as it primarily measures the matrix (surface) softening rather than total structural deflection.
Why is a computer-controlled system better than manual HDT testing?
A: Computer-controlled HDT Vicat testers offer superior accuracy and repeatability. Features like automated weight lifting and electrical frame positioning minimize human error. Additionally, the software provides real-time deformation curves, automatic data logging, and immediate report generation, which are critical for ISO-certified laboratories and R&D facilities.
What are HDT Method A and Method B?
A: Under ASTM D648, Method A applies a high stress ( $1.82$ MPa / $264$ psi), while Method B uses a lower stress ( $0.45$ MPa / $66$ psi). Method A is typically used for rigid engineering plastics to determine performance in high-stress environments, whereas Method B is used for softer or unfilled materials.