Product Name: Sponge foam indentation hardness tester
Product model: PMYX-2000
Control method: microcomputer control
Standards compliant:
GB/T 10802 soft polyurethane foam
GB/T 10807-2006 Determination of hardness of flexible cellular polymeric materials (indentation method)
GB/T 12825-2003 Polymer porous elastic material concaveness method hardness determination
GB/T 18942.1-2003 Determination of compressive stress-strain properties of cellular materials - Part 1
ASTM D3574 Soft Porous Materials - Test Methods for Plate, Adhesive and Molded Polyurethane Foam
GBT 26392-2011 Determination of recovery time of slow rebound foam
First, the main scope of application and function
It is mainly used for soft foaming materials and materials such as: sponge, foam and other indentation hardness. Standard test of standard size sponge, foam and other samples under the A, B, C and other test conditions required by national standards. Test the concave hardness index, concave hardness characteristics, concave hardness test, and compressive stress of sponges, foams, and the like.
Second, the product overview:
The appearance of the device is beautiful and generous. It is mainly composed of two parts: the test host and the control system. The instrument is controlled by computer. It can automatically test the data according to the standard requirements. All operations are carried out in the software. The test is convenient and the operation is simple. It can quickly and accurately collect and process various data during the test, and can access, display and print.
GB/T10807-2006 Determination of hardness of flexible foamed polymeric materials (indentation method)
Third, the software operation instructions:
Pre-recession:
Apply a force of 5 N to the sample to measure the thickness of the sample, and press it at a rate of 100 MM/MIN to 70% of the thickness of the sample, and then unload at the same rate.
Method A - Determination of the concave hardness index:
After three preloadings, the thickness of the sample was recessed by 40% and held at 30 s, and the force value was recorded.
Method B---Measurement of concave hardness characteristics:
After three preloadings, the thickness of the sample was recessed by 25% and held at 30 s, and the force value was recorded.
Increase the concaveness to 40% from the thickness of the concave sample by 25% and keep the value of 30S, recording the force value
Increase the concaveness to 65% from the thickness of the concave sample by 40% and keep the value of 30S, recording the force value
Calculation of the concaveness coefficient:
Recession degree 25% required force value / recession degree 40% required force value
Recession degree 65% required force value / recession degree 40% required force value
Method C---Recessed hardness test:
After performing three pre-recession tests, measure the instantaneous maximum after 40% of the thickness of the pressed sample
Method D---Free setting test method:
It can be tested according to your own requirements. This test method is set according to foreign standards. For example, the following test is required: it needs to be compressed 5 times.
1. For the first time, compress to 30% of the original thickness at 150mm/min and return to the initial state.
2. After 5 seconds of pause, compress to the original thickness of 40% at a speed of 90mm/min and return to the initial state.
3. After 3 seconds of pause, compress to the original thickness of 75% at 300mm/min and return to the initial state.
4. After 1 second pause, compress to the original thickness of 50% at 75mm/min and return to the initial state.
5. After 2 seconds of pause, compress to 40% of the original thickness at 50mm/min and return to the initial state.
Fourth, product features:
1. The amount of depression is preset, and the amount of depression is precisely controlled by the timing circuit;
2, easy to use: the use of high-precision pressure sensors and large-scale integrated circuits;
3. Test method: In addition to the test methods specified by the national standards, the test method can be freely set;
4, platen speed: the default speed is 100MM / MIN; you can freely set the running speed as needed;
5. Transmission mechanism: precision ball screw, no noise measurement;
6, thickness measurement: can automatically calculate the thickness of the tested sponge;
7. Curve display: The curve of test time, pressure and indentation depth can be displayed and retrieved simultaneously;
8, data retrieval: put the mouse on any point on the curve, you can display the time, pressure and indentation depth in real time;
9. Data storage: Data can be saved for each experiment, and the set test method can also be saved.
10. Test process: display the test process in real time;
Fifth, technical parameters:
1, the default speed: 100MM / MIN; freely set
2. Indentation hardness measurement range: 0-1500 N
3, the minimum force measurement resolution: 0.01N
4, measurement error: <1%
5, the diameter of the indenter: 200MM
6, effective pressure plate: 150MM
7, voltage: 220V/50HZ
8, equipment size: length, width and height - 550MM * 400MM * 1200MM
9, equipment weight: 150KG
GB/T10807-2006 Determination of hardness of flexible foamed polymeric materials (indentation method)
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