Multi functional crack propagation rate testing machineUsed to determine the flowability (melt index) of thermoplastic high polymers at high temperatures, such as polyethylene, polypropylene, polyoxymethylene, ABS resin, polycarbonate, nylon fluoroplastics, and other high polymers.
Performance Characteristics
1. The main frame is processed separately, making installation and maintenance convenient. The surface is treated with spray coating, making it neat and beautiful;
2. The key components such as the barrel and piston rod are made of high-temperature resistant and low expansion coefficient alloy materials, and have undergone special surface heat treatment. They are not easily deformed at high temperatures, have high hardness, and are not easily worn, making them suitable for use;
3Multi functional crack propagation rate testing machineUsing a non-contact high-precision lever type optocoupler to measure displacement, the lever type optocoupler has a balanced mass before and after, without additional devices such as springs, and will not bring other effects when measuring displacement, effectively preventing experimental errors;
4. Equipped with an automatic cutting device driven by a micro motor, the cutting time can be set. The rotating motor will cut once according to the set cutting time, with precise time control and small errors. The cutting device can also be manually driven, making operation simple and convenient;
5. Equipped with a microcomputer controller specifically developed for the melt finger testing machine, it can perform full process control, data processing, data printing, etc. of the testing process, and print the test results through the equipped micro printer;
6. Adopting industrial PLC programmable controller and LCD operation platform, the temperature part adopts a separate temperature unit and LED digital display.
7. The system has temperature calibration function and can automatically control temperature.
8. It has three cutting methods: manual, time controlled, and automatic, and can achieve two testing methods: mass method (MFR) and volume method (MVR). It can measure the melt density of raw materials at the testing temperature.