A Viscous Liquid Is Flowing Through The Pipe In Importance of Melt Flow Index Testing in Polymers

You are searching about A Viscous Liquid Is Flowing Through The Pipe In, today we will share with you article about A Viscous Liquid Is Flowing Through The Pipe In was compiled and edited by our team from many sources on the internet. Hope this article on the topic A Viscous Liquid Is Flowing Through The Pipe In is useful to you.

Importance of Melt Flow Index Testing in Polymers

Polymers are used for a wide range of products. A good quality polymer can bring profits and branding, while a low-quality polymer can bring safety issues, loss of sales and a decline in branding. Therefore, an efficient polymer testing method is used by manufacturers to rank polymer materials by evaluating their melt flow properties.

Why is polymer testing necessary?

The use of the melt flow index (MFI) test, also known as the melt flow rate (MFR) test, dates back to the early days of polymer science and materials classification. This test method may seem very basic but it is the best technique for ranking polymer samples according to test results. Many polymer processors place a high value on ranking based on this assessment. Furthermore, medical device, food and pharmaceutical packaging manufacturers have set polymer melt flow testing as their approval criteria for suppliers. They use the test results as a benchmark to ensure that the material will match the desired behavior during its processing, extrusion or injection molding.

How is the test conducted?

The MFI tester is a precision test tool used to calculate the mass of polymer extruded through a capillary die at a specific temperature and applied force. The test specimen may be virgin resin or material from a finished thermoplastic product. The sample is loaded into the preheated barrel of the tester with a piston. A specified amount of load is placed on the piston to apply force. When the correct position is reached, the sample begins to melt and the capillary begins to exit the die. After cooling, the extruded polymer sample was weighed. The test results are then calculated, which is the weight of the sample that has flown in 10 minutes.

Determining the properties of polymers by MFI test

Specific useful properties of polymers are determined by testing the material’s flow properties. The melt viscosity of a polymer during testing is inversely proportional to its flow behavior. The more viscous the polymer, the lower the flow. Test data can also be linked to the molecular weight of the sample. Longer chain polymers take longer to push through the capillary and therefore flow slower. Molecular weight distribution data can also be obtained by testing at the same temperature with a different load application. Also, the shear viscosity of a particular sample can be calculated by applying the inverse proportion relationship. Reasons for choosing the MFI test over other techniques for the assessment of these properties are its rapidity and its cost-effective nature.

Although the melt flow index test seems to be basic and sometimes not chosen for the complicated and latest technology, it can provide highly accurate and analytical test results by complying with all the test requirements.

Video about A Viscous Liquid Is Flowing Through The Pipe In

You can see more content about A Viscous Liquid Is Flowing Through The Pipe In on our youtube channel: Click Here

Question about A Viscous Liquid Is Flowing Through The Pipe In

If you have any questions about A Viscous Liquid Is Flowing Through The Pipe In, please let us know, all your questions or suggestions will help us improve in the following articles!

The article A Viscous Liquid Is Flowing Through The Pipe In was compiled by me and my team from many sources. If you find the article A Viscous Liquid Is Flowing Through The Pipe In helpful to you, please support the team Like or Share!

Rate Articles A Viscous Liquid Is Flowing Through The Pipe In

Rate: 4-5 stars
Ratings: 9691
Views: 75291618

Search keywords A Viscous Liquid Is Flowing Through The Pipe In

A Viscous Liquid Is Flowing Through The Pipe In
way A Viscous Liquid Is Flowing Through The Pipe In
tutorial A Viscous Liquid Is Flowing Through The Pipe In
A Viscous Liquid Is Flowing Through The Pipe In free
#Importance #Melt #Flow #Index #Testing #Polymers

Source: https://ezinearticles.com/?Importance-of-Melt-Flow-Index-Testing-in-Polymers&id=9861247