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Labscience: Melt Flow Index Tester - Digital

A Melt Flow Index (MFI) Tester is an essential instrument used in the plastics industry to evaluate the flow rate of molten thermoplastic materials. It measures how easily a polymer can flow when heated, providing insight into its viscosity and molecular weight, key factors in determining the material’s processing behavior and application suitability.

The MFI Tester operates by heating the polymer sample in a barrel to a specified temperature. A standard weight is applied to force the molten polymer through a die with a small, precise opening. The amount of material extruded within a 10-minute time frame is recorded as the melt flow index, expressed in grams per 10 minutes. Materials with a high MFI flow easily and are suitable for processes like injection molding, while low MFI materials are more viscous, making them better for products requiring more structural integrity.

Advanced MFI Testers come equipped with digital displays for real-time data monitoring and programmable temperature control to ensure precise testing conditions. They also offer interchangeable weights for testing under different loads, complying with global standards such as ASTM D1238 and ISO 1133.

The Melt Flow Index Tester is widely used in polymer manufacturing, research, and quality control, ensuring material consistency and optimal performance in various plastic production processes.

The Melt Flow Index (MFI) Tester is designed with advanced features to ensure accurate measurement of thermoplastic materials’ flow properties. Here are its key features:

  1. Precise Temperature Control: The MFI tester offers highly accurate temperature regulation, typically from 50°C to 400°C, ensuring the polymer is melted under precise conditions. Accurate temperature control is crucial for obtaining consistent and repeatable test results.

  2. Digital Display: Equipped with an intuitive digital interface, the MFI tester provides real-time data on temperature, time, and flow rate. This enhances user convenience by enabling easy monitoring of test conditions and results.

  3. Interchangeable Weights: The MFI tester comes with multiple weight options, ranging from 0.325 kg to 21.6 kg, allowing for customized testing based on the material’s characteristics. This versatility makes it adaptable to various thermoplastic testing standards.

  4. Automatic Sample Cutting: Many models feature an automatic or manual sample-cutting mechanism, ensuring precise, timed cutting of the molten polymer. This ensures accurate melt flow rate measurements during testing.

  5. Standards Compliance: The MFI tester adheres to international standards such as ASTM D1238 and ISO 1133, ensuring that test results meet global quality control requirements.

  6. Robust Construction: Built with durable materials, the tester is designed for long-term use in demanding industrial environments, providing reliable performance over time.

These features make the MFI Tester an essential tool for quality control, providing precise data for polymer processing and ensuring consistency in material performance.

The Melt Flow Index (MFI) Tester is designed to measure the flow rate of thermoplastic materials under controlled conditions. Below are its key specifications:

  1. Temperature Range: The tester offers a wide temperature range, typically from 50°C to 400°C, ensuring compatibility with various thermoplastic materials. Precise temperature control, with an accuracy of ±0.1°C, allows for consistent test conditions.

  2. Load Capacity: The device supports a range of standard weights from 0.325 kg to 21.6 kg, enabling testing under different load conditions based on specific material requirements. The ability to apply different loads allows for versatile testing across a wide spectrum of polymers.

  3. Barrel Diameter: The standard barrel diameter is typically 9.55 mm, conforming to ASTM and ISO standards, ensuring uniformity in the flow rate measurement process.

  4. Extrusion Die Dimensions: The extrusion die usually measures 2.095 mm in diameter and 8 mm in length, providing precise flow resistance for accurate measurement of melt flow.

  5. Display: The tester is equipped with a digital display that shows real-time data such as melt flow rate, temperature, and test duration, allowing users to monitor the test process accurately.

  6. Compliance: The MFI Tester complies with international testing standards, including ASTM D1238 and ISO 1133, ensuring its suitability for global use.

  7. Power Supply: Operates on standard electrical inputs (220V or 110V, 50/60Hz), making it suitable for use in various laboratory and industrial settings.

These specifications ensure that the MFI Tester delivers precise, repeatable results, making it a vital tool for polymer manufacturers and quality control labs.

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