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How to judge the mechanical properties of plastics with melt flow rate meter?

Abstract: 熔体流动速率仪用于测试塑料的熔化速率和流动性能,帮助生产商评估塑料的机械性能。在生产过程中,该仪器通过加热塑料树脂样本并施加特定重量来测量其从窄管中流出的速度。这种测试提供了塑料在特定条件下的熔体流动指数(MFR),反映了其厚度和流速。低分子结构的塑料通常具有较低的MFR,而高分子结构则表现出较高的MFR。通过这些数据,制造商能够判断塑料的质量和分子结构的完整性,从而优化生产和确保产品的性能。

overview

Plastics are widely used in the manufacture of different household and industrial products. Producers in the plastics business test the properties of plastics before starting the production process. A major decision for manufacturers when setting up a mechanical research center to test the properties of plastics. This is possible with the help of an effective melt flow index Tester. This test instrument is used to concentrate the melt flow rate and melt flow rate of plastic asphalt or pellets. Calculate the melting rate to analyze the thickness of the plastic. In order to keep up with and improve the quality of products, producers in the plastics industry use melt flow index Testers to test the properties of plastic pellets. This instrument is considered a testing machine that helps quantify the thickness of plastics.

The melt flow test is a popular test widely considered by all manufacturers in the plastics industry to measure the viscosity and strength of plastics. The test was first proposed in the 1950s, and the simplicity of the test has continued since then . Melt flow testing provides very accurate, repeatable and reliable test results.

Using a melt flow rate meter to judge the mechanical properties of plastics with Figure 1

Melt Flow Index Test Method

The testing machine is equipped with a heating barrel into which the plastic resin sample is poured. A specific amount of weight is applied to the pellets, which become dissolved plastic from the narrow tube. The melted sample that comes out of the tube at a given time is then measured as the melt flow rate (in grams) of the plastic. Testing the MFR of plastics has become very easy with the help of a melt flow index Tester . This is known as the melt volume fraction of the plastic.

The basic property measured with the help of a melt flow index Tester is the thickness or flow rate of the plastic at a specific weight and temperature. Polymers with low molecular structure exhibit low MFR, and high molecular structures exhibit high MFR for plastics. This helps to judge the exact flow rate of the plastic.

Melt flow index Tester helps to evaluate plastic properties given by various distributors of plastic pellets. This test is mainly used to ensure that the molecular structure of the plastic is good. The change in the plastic melt flow rate measured by using a melt flow rate meter to judge the mechanical properties of the plastic shows the degradation rate of the plastic quality.

Using a melt flow rate meter to judge the mechanical properties of plastics with Figure 2

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