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melt flow rate index tester

April 23, 2022

melt flow rate index tester

Plastic lab melt flow rate index meter tester

Melt flow rate instrument is also called plastic, resin melt index instrument is used for mensurating melt flow rate when the viscous flow state MFR value, it applies to the polycarbonate, higher temperature of aromatic sulfone, fluorine plastic, nylon and other engineering plastics, can also be applied to polyethylene (PE), polystyrene (PS), polypropylene (PP), ABS resin, polyformaldehyde (POM), polycarbonate (PC) resin with lower melting temperature, such as plastic test, widely used in plastic production, plastic products, such as petroleum and chemical industry and related colleges and universities, scientific research units, and the commodity inspection department

Type:
1. The digital display
Set the electronic P.I.D regulator for temperature control, which is completely in line with national standards (cannot test melt volume flow rate and melt density).The machine also sets up the counter, which is convenient for measuring cutting time.The instrument works with the cutting and weighing method, and the scope is wide.
2. LCD is fully automatic.
Single chip microcomputer temperature control and program control, under test ended, and automatically display the time needed for a specific volume of the melt flows through the mouth mould, the calculation flow rate value, can repeat of high precision, easy to operate.The system is involved in temperature control.The manual cutting device can ensure the smooth detection by cutting and weighing method when automatic detection is not possible.Compact structure, beautiful shape, high precision, easy to use accessories.
3. Microcomputer controlled automatic.
The melt indexer sets up a single chip microcomputer automatic test device and electronic automatic cutting device.After the microcomputer system has input the corresponding parameters from the light touch key, the test is finished, namely, automatic calculation and printing of flow rate value, high repeatability and convenient operation.The temperature control of the use of computer software technology, which can automatically eliminate because of the power supply voltage fluctuation and the influence caused by environmental changes, and when the temperature of the instrument and the standard temperature thermometer (special correction to match) appeared deviation, the operator can easily random fixed.The electronic automatic cutting device can be automatically cut at the preselected interval to calculate the final result when automatic detection is not possible.

Main application:
Melt flow rate instrument, used to measure the thermoplastic resin melt mass flow rate (MFR), melt flow rate (MVR) volume and the density of the melt, it is not only applicable to the high melting temperature of polycarbonate, nylon, fluorine plastic, aromatic sulfones engineering plastics, also applies to polyethylene, polystyrene, polypropylene, ABS resin, poly formaldehyde resin with lower melting temperature, such as plastic test, widely used in plastic raw materials, products, petroleum and chemical industries, and related colleges and universities, scientific research units and the commodity inspection department.
Barrel parameters Inner hole 9.55±0.025mm 
Pistons parameters Piston head:  9.475±0.015mm 
Piston length H=6.35±0.1mm
Paramters  Extrusion hole 1=2.095±0.005mm 
Temperature parameter With intelligent temperature control instrument, 

with four pairs of significant temperature

 setting control, PID parameters can be automatically set, 

precision up to ± 0.1 degree centigrade 

Temperature range 80degree centigrade~400degree centigrade
Temperature accuracy ±0.2 degree centigrade
Display resolution  0.1degree centigrade
Maximum comsuption  < 600W
Temperature accuracy  4 min.
Weight parameters are as follows:
Weight accuracy  ±0.5%
Basic configuration 0.325kg ,1.2kg,2.16kg,3.8kg,5kg,10kg,12.5kg,21.6kg
Position detection 
Control precision  ± 0.1mm
Loop distance from up and down   30mm
Test flow control
Times of cutting the material  0~10 times
Material cutting interval 0~999s(set reference Table 2)
Control flow reaches the set temperature without volatility
Barrel temperature time 15 min.
Material be installed 1 min.
Material sample temperature recovery time  4 min.
When binder set 1min
How it works:
Melt flow rate meter is in the specified temperature conditions, with high-temperature furnace to melt the state of the measured object. The molten state of the measured object, the required weight load by gravity out of a certain diameter hole in the test. Plastics in industrial enterprises and scientific research units of production, often with “melt (mass) flow rate” to represent the polymer material in the molten state of fluidity, viscosity and other physical properties. Melt flow rate refers to the extrudate, the average quality of the sample paragraphs are translated into 10 minutes of extrusion volume. Melt (mass) flow rate expressed by MFR, unit: g / 10 minutes (g / min)
Formula: MFR (θ, mnom) = tref × m / t = 600 × m / t (g/10min)
Where: θ – test temperature
mnom – Nominal Load Kg
m – the average quality of cut g
tref – reference time (10min): 600
t – cut off time interval unit: seconds.

Example:
A set of plastic samples, a cut every 30 seconds, the quality of the results section: 0.081 g, 0.086 g, 0.081 grams, 0.089 grams, 0.082 grams.
Cut the average quality m = (0.081 +0.086 +0.081 +0.089 +0.082) ÷ 5 = 0.0838 ≈ 0.084 (g)
Into the formula: MFR = 600 × 0.084/30 = 1.680 (g / 10 min)

By Industry:
For factories and enterprises and research institutes in the production and research.
Meet the criteria:
The machine design and manufacture in accordance with the requirements of GB/T3682-2000

Technical parameters:
Model
Plastic Melt Flow Rate Tester, MFI Testing Machine
1. Squeeze out some material
Discharge port diameter Φ2.095±0.005mm
Discharge port length 8.000±0.025mm
Loaded barrel diameter Φ9.550±0.025mm
Loaded barrel length 152±0.1mm
Piston head diameter 9.475±0.015mm
Piston head length 6.350±0.100mm
2.Standard test load (eight grades)
1grade 0.325kg=(rod + weight + thermal units +1 No. tray body weight)
2grade 1.200 kg=(0.325+2 0.875 eight)
3grade 2.160 kg=(0.325+3 1.835 eight)
4grade 3.800 kg=(0.325+4 3.475 weight)
5grade 5.000 kg=(0.325+5 4.675 weight)
6grade 10.000 kg=(0.325+5 4.675 weight+6 5.000 weight)
7grade 12.500 kg=(0.325+5 4.675 weight+6 5.000+7 2.500 weight)
8grade 21.600 kg=(0.325+2 0.875+3 1.835+4

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