Extrusion Plastometer

Features:

• High Accuracy and Stability: Ensures reliable temperature readings.

• Advanced PID Control: For precise temperature management.

• Real-Time Temperature Display: With protective and prompt functions.

• Included Accessories: Devices for loading and cleaning are provided.

• Data Management: Test data can be directly viewed and printed using a microprinter.

FAQ

1. What is a Melt Flow Rate Tester?  

The Melt Flow Rate Tester (also referred to as a Melt Flow Index Tester) is a specialized instrument

     used to determine the flow characteristics of thermoplastic materials in the molten state. It measures

     the mass (MFR) or volume (MVR) of melt passing through a standardized die over a period of 10 minutes 

     under specified temperature and load conditions, providing essential data for material rheological evaluation.

2. What is the difference between MFR and MVR?  

- MFR (Mass Flow Rate) – Determined by weighing the extrudate collected over a set time, expressed in g/10 min.  

- MVR (Volume Flow Rate) – Determined by recording the piston displacement over time, or the time required for

 the piston to travel a fixed distance, expressed in cm³/10 min.  

The two values are interconvertible when the melt density of the material at the test temperature is known.

3. What standards does the tester comply with?  

The instrument conforms to major international and national standards, including:  

- GB/T 3682.1-2018 (China)  

- ISO 1133:2011 (International)  

- ASTM D1238-2013 (USA)

4. Why do test results sometimes vary significantly (by several times)?  

Significant data scatter is often observed with powder materials and is typically caused by thermal degradation or

 cross-linking during testing. Adding an appropriate stabilizer (antioxidant) can effectively resolve this issue.

5. What could cause unusually low test values?  

Common causes include:  

- Increased friction due to coke deposits on the piston or guide sleeve, hindering smooth piston movement.  

- Misalignment of the guide sleeve, causing the piston rod to tilt.  

- Incomplete cleaning of the barrel or die, leaving residual material.  

Addressing these factors is critical to maintaining measurement accuracy.

6. What daily maintenance is recommended?  

- Barrel and die – Clean while still hot after each test to prevent residue from hardening and becoming difficult to remove.  

- Weights – Inspect regularly for oil or rust; keep surfaces clean and free from contamination.  

- Heating system – Remove dust from the heating unit periodically to ensure proper heat dissipation.  

- Long-term storage – Thoroughly clean all parts, apply anti-rust oil, and store in a dry environment. Before resuming use,

 verify instrument accuracy with standard reference materials.

7. What are the advantages of the 7-inch touchscreen?  

The 7-inch full-color touchscreen offers an intuitive user interface with responsive touch control and straightforward navigation. 

It supports dual-language operation (Chinese/English), making it particularly user-friendly for operators new to this type of equipment.

8. What is the temperature control accuracy?  

The instrument offers a temperature range from ambient to 350°C, with a control accuracy of ±0.1°C, ensuring high precision and 

excellent repeatability in test results.

9. What materials can be tested?  

The tester is suitable for a wide variety of thermoplastics, including but not limited to:  

- Polyethylene (PE) and Polypropylene (PP)  

- ABS resins and Polycarbonate (PC)  

- Nylon, fluoroplastics, and other engineering plastics  

- Rubber and related petrochemical products

10. How can I ensure the accuracy of test results?  

To maintain reliable and repeatable results:  

- Calibrate temperature and displacement sensors regularly.  

- Clean the barrel and die thoroughly before each test.  

- Perform routine verification using certified reference materials.  

- Ensure accurate weight loading.  

- Strictly follow the test conditions prescribed in the applicable standard.

Packing Information:

    Quantity: 1 pieces, Dimensions/Gross weight : 450*450*700mm /65kg