Importance of Polymer testing!

The use of MFI which is also known as Melt Flow Index Tester, which is dates back to preliminary time of the material categorization and polymer science. The methods of testing may seem quite basic but this is the best and updated technique to rank samples of the polymer as per the test results. According to the latest MFI Testing Instruments, it is significant to get Polymer testing completed. Various polymer processors also give high significance to the ranking based on evaluation. At the same time, manufacturers of medical device, pharmaceutical packaging has set the polymer melt flow testing being the clearance criteria for the suppliers. They use result of the test as benchmarks to confirm that material will match envisioned behavior during their processing, injection or extrusion moulding.

How is Polymer test conducted?

MFI tester is known to be the accurate instrument for testing which is also used to calculate polymer mass which is extruded through the capillary die at specific temperature and with the applied force. This testing sample of Plastic Testing Equipments may be an unused material from the finished thermoplastic product. Also, specimen is also loaded with the preheated barrel along with the piston. A particular amount of the load is also kept on piston for applying the force. While the suitable condition is also reached specimen to starts melting as well as to start flowing out from capillary die.

Features identified of the polymer by the MFI test

Distinct and valuable characteristics of the polymers are identified by testing flow properties of material. The melt viscidness of the polymer during test is contrariwise proportional to their flowing behavior. Also, MFI Testing Equipment is also used to check the quality of the packaging. If the polymer is much viscous, so flow will be slow. The test data may even be linked to molecular weight of sample. The Long chain polymer needs additional time to get well pushed through capillary and hence have slow flow in the nature. The molecular weight distribution related to the Data may also be taken through performing a test at same temperature having different load application. Moreover, the shear viscidness of a specific sample may be well computed by applying the relationship which is inversely proportional. The reasons for choosing the MFI test as compared to different techniques for evaluating these properties are their promptness and their cost-effective concept.

Possibly the testing of melt flow index appears to be quite basic and is at times is also not opted over most complex and updated technologies, but it may deliver high accuracy and analytic test results conforming all requirements of the test.