Melt Flow Index

Melt flow index refers to the mass in grams of thermoplastic material that passes through a standard die within 10 minutes under specified temperature and pressure conditions. The principle is based on the flow properties of plastic melts and is used to evaluate the processing fluidity of materials. Its role lies in guiding the setting of plastic molding process parameters, and its applications include plastic production, quality control, and material selection in research and development.
Selection
The selection of melt flow index should consider material type, processing technology, and product requirements. Match the test temperature and pressure to the actual processing conditions, and select the appropriate die according to standards such as ASTM D1238. Refer to supplier data sheets to ensure that the instrument's accuracy and repeatability meet industry specifications.

Terms

Instruments

Temperature control accuracy of +/- 0.5 ℃, equipped with eight standard test force, can accurately determine the melt flow performance of polymers at high temperatures, to meet a variety of material testing needs.

$ 977.00

Adopting MCU to adjust power and temperature control mode, temperature control accuracy +/- 0.5 ℃, with eight standard test force, can meet the needs of different material testing, suitable for melt flow performance measurement at high temperature.

$ 945.00

Temperature range 50~ 400 ℃, thermostatic accuracy +/- 0.5 ℃, equipped with eight standard test force, can accurately determine the flowability and viscosity of polymers in molten state and other physical properties.

$ 993.00

Using Hastelloy heating cylinder to avoid high temperature oxidation, dual Sensor temperature control accuracy of +/- 0.5 ℃, support strong corrosion plastic test, with four minutes countdown and RS232 data output function.

$ 933.00

Equipped with 8 Meters Oven, roller heating temperature up to 200 ℃, effective application width 500mm, Spreader thickness range 0.005-3mm, support automatic unwinding to winding process, suitable for hot-melt adhesive film.

$ 29120.00

Measurement accuracy of refractive index is +/- 0.0002nD, Measurement range is 3000-1.7000 nD, base is made of stainless steel, prism is made of hard Glass.

$ 420.00

Measurement refractive index range 3000-1.7000, accuracy of +/- 0.0002, can be connected to Thermostat determination of 0 ℃ -70 ℃ refractive index, support sugar concentration 0-95% measurement, resolution 0.0005, suitable for Optical Property Analysis of various substances.

$ 428.00

Using 6-bit OLED LCD display, refractive index Measurement range 1.30000-1.72000nD, sugar content range 0-95% Brix, built-in lithium battery supports 72 hours of continuous work, compact and easy to carry.

$ 1364.00

Hall flow rate swirl/spin Sensor, can measure pollution turbid water flow, speed range 0.01-5 m/s, flow measurement error ≤ 1.5%, support -10 ℃ to 50 ℃ environment temperature work, simple and lightweight structure and low power consumption.

$ 380.00

Using CRI = 98 high color rendering index Illuminant, with Illuminant Timer, all metal structure, inclined table design, uniform lighting, suitable for reflection manuscript observation.

$ 1203.00

Using refraction principle design, 3 seconds fast display results, automatic temperature compensation function, use more than 10000 times, sugar Measurement range 0~ 35%, refractive index Measurement range 1.3330~ 1.3900.

$ 251.00

Equipped with high-performance linear CCD and sapphire prism, refractive index Measurement range 1.3000~ 1.7000nD, accuracy +/- 0.0002, support transparent to viscous liquid rapid detection.

$ 3688.00

Velocity range 0.01-5 m/s, flow measurement error ≤ 1.5%, support sewage environment test, simple and lightweight structure, Degree of automation is high, stable and reliable.

$ 346.00

Using refraction principle design, compact and portable can be put into the pocket, LCD large screen 3 seconds fast display, automatic temperature compensation, use of more than 10000 times, sugar Measurement range 0~ 85%, refractive index range 1.3300~ 1.5100.

$ 251.00

Velocity range 0.01-10 m/s, flow measurement error ≤ 1.5%, using measuring Rod positioning measurement method, lightweight structure and support automatic calculation of flow rate formula.

$ 703.00

Articles

Melt flow index instrument controls the flowability and stability of polypropylene injection molding process.
This article explores how to assess and regulate the stability of polypropylene's flowability in injection molding processes by measuring its melt flow rate. It explains the principles behind characterizing flowability and analyzes the impact of factors such as material batch variations and process parameters on stability.
Melt flow index tester measures the processing fluidity of high-temperature engineering plastics.
This article introduces how a melt flow indexer measures the processing fluidity of high-temperature engineering plastics. It first explains the working principle of the instrument, which involves measuring the rate at which molten plastic passes through a standard die under specific temperature and pressure conditions to obtain the melt flow rate value.
Melt Flow Index Tester for Measuring Plastic Flowability to Control Process
A melt flow indexer evaluates the melt flow rate of plastics by measuring the extrusion mass or volume under specific temperature and load conditions.
Melt Flow Indexer and Torque Rheometer in the Evaluation of Processing Properties of Thermoplastic Resins
This article introduces the differences and selection methods between melt indexers and torque rheometers in evaluating the processing properties of thermoplastic resins.
The melt flow indexer measures the flow rate of thermoplastic resins.
A melt flow indexer is a device used to measure the flowability of thermoplastic resins. It calculates the melt flow rate by determining the mass or volume of the melt that passes through a standard die within 10 minutes under specific temperature and pressure conditions.
Operating Specifications for Measuring the Flow Rate of Hot Melt Adhesive with a Melt Flow Index Tester
How does a melt flow indexer affect the processing stability of modified plastics?
A melt flow indexer is a device used to determine the melt flow rate of thermoplastic materials under specific temperature and load conditions. The measurement is typically expressed as the mass (in grams) extruded per ten minutes, known as the melt flow rate (MFR) or melt mass-flow rate (MFR).
Melt Flow Indexer Evaluates Fluidity of Thermoplastics
A melt flow indexer is a device used to test the flowability of thermoplastic plastics. It measures the mass or volume of plastic extruded from a standard die per unit time under specific temperature and pressure conditions to determine the melt flow rate.
If the three temperature parameters of the melt flow indexer for testing plastic fluidity are not properly adjusted, all data will be invalid.
When testing the flowability of plastics with a melt flow indexer, temperature control is crucial. There are three key temperature parameters: first, the barrel set temperature; second, the uniformity of temperature distribution; and third, the stability of temperature control.