Fundamentals of melt flow testing linkedin slideshare. On sale melt flow index tester, rheological properties. Manufacturing and rehological analysis of spiral flow test piece. Melt flow index mfitester melt index tester lab test equipment. The mfi2100 melt flow index tester helps gauge the compositon and consistency of plastics, rubber, lubricants and numerous other liquid and molten subtances. The melt flow index mfi or melt flow rate mfr is a measure for the ease of flow of. The melt flow index mfi is the measure of how many grams of polymer pass through a standardized capillary under a standard load over 10 minutes. This presentation is designed to be an informative introduction and guide to melt flow test, and to assist with. Jan 17, 2014 presto group is the manufacturer and supplier of melt flow index, melt flow index deluxe testing machines. The value of melt flow index testing polymer solutions.
Source testing equipment to test melt flow index of plastic raw material and polymers. Plastics are used in almost all production verticals in the form of machines or sometimes as raw material to fulfil the manufacturing needs. Melt flow index is an assessment of average molecular mass and is an inverse measure of the melt viscosity. Knowing the mfi of a polymer is vital to anticipating and controlling its. Consequently, the mfr test is a constantshearstress test, not a constantshearrate test. Screenshot of mastercam mill simulation for spiral flow test mould cavity. Melt flow index tester nxg model testing procedure youtube. Optional accessories can be selected according to different.
Manufacturers of polymer rheology testing machine to measure polymer viscosity, melt flow index and mfi testing. The mfi2100 is said to be simple to use, particularly due to the integrated digital timer and endof test alarm. The melt flow index only tests the material at one shear stress, and temperature. There were determined the sample mechanical properties by a tensile test, melt flow rate, temperatures of phase transitions by differential scanning calorimetry, dsc, temperatures of thermal. The value obtained through the melt flow index test is a single data point. The only flow parameter available to the processor is the melt flow index of the material. Additional advanced features include a large touchscreen display for full test programming, management and diagnostic functions, with an embedded pc based on windows ce, able to store test methods and test results. Presto group is the manufacturer and supplier of melt flow index tester nxg model testing machines.
Use of melt flow rate test in reliability study of thermoplastic. Plastic melt flow tester is suitable for measuring melt mass flow ratemfr and melt volume flow rate mvr of plastic materials. The melt flow indexer is suitable for measuring melt mass flow ratemfr and melt volume flow rate mvr of plastic materials such as polyethylene, polypropylene, polystyrene. Presto group is the manufacturer and supplier of melt flow index, melt flow index deluxe testing machines. Melt flow index mfi is defined as the measure of the ease of melt flow of thermoplastic material in gram over the course of 10 min at a certain standard temperature ie, 230c.
Our melt flow tester, built according to international standards, is an instrument for measuring with great accuracy the melt flow rate and useful for quality control test on flow ability, grading of thermoplastic material according to flow in general, useful for predicting adequacy of thermal stability case of processing and quality. The saumya mfi tester are built to measure melt flow rate with greater accuracy as prescribed in different national and international standards. To get a quotation please fill in the form and a member of the team will be in touch. In this work, mechanical predicting methods such as partial least squares pls method and support vector regression svr method are. Generally, higher mfi polymers are used in injection. Astm d2839 16 standard practice for use of a melt index. By definition it is a pressurelimited configuration. The nanocomposites were prepared using an internal mixer and were molded using a compression mold to form test samples. Use of melt flow rate test in reliability study of. Melt flow index mfitester melt index tester lab test. Melt flow index, melt flow rate, astm d1238, iso 13.
The manually operated test procedure is very simple to undertake. The manual mp1200 comes with everything you need except weights and laboratory balance to perform an astm d1238 procedure a manual cut gravimetric melt flow rate mfr. It is used to determine the melt flow rate of thermoplastic resin mfr and melt volume flow rate mvr. The device is equipped with advanced features like touch screen display, protective mesh around the barrel, automatic cutter activation. Similarly, the test conditions of mfi measurement is normally expressed in kilograms rather than any other units. The temperature profile in the barrel is extremely stable and accurate. It is found that the mfi and impact strength of rotomoulded product increases.
The melt flow rate mfr, originally called melt flow index or melt index, is a measure of the ease of flow of the melt of a thermoplastic polymer. This tester can test thermoplastic melt mass flow ratemfr and melt volume flow ratemvr, qc652s buildin isoastm standards test methods, operative picture is adopted touch panel guided conversation style screen, user can precisely and smoothly to proceed with test, buildin analysis function and with flash drive save function. Melt flow rate depends on molecular weight, additives, and other ingredients. Find details of companies offering melt flow index tester at best price. This value is also commonly called the melt index, mi, or meltflow index, mfi. The basic melt flow indexer, often abbreviated as mfi, is an affordableprice tabletop instrument used to test the melt flow resistance mfr of a wide range of thermoplastic materials. The melt flow index test measures the rate of extrusion of a thermoplastic material through orifice of specific length and diameter under prescribed conditions of temperature and pressure.
Because use conditions and applicable laws may differ from one location to. The annealing heat treatment was performed at 100 oc for different holding times, 75, 100 and 150 hours. Astm d1238 standard test method for melt flow rates. Alternatively call us on the number below for professional, no obligation advice. Mfi tester melt flow index testing rheological testing of. The melt flow index mfi, also known as the melt flow rate mfr, of a resin is a materials property test used in the plastics industry. The fabric fusing tester is designed for use in the determination of the heatresistant properties of chemical fiber and blended fabrics to determine the effect of fabric resistance to melt treatment. The instrument is designed and manufactured as per standards set by iso and astm and is mainly focused on meeting the principal conditions necessary for the test. The sample consists of a strand produced by extrusion of the polyethylene in accordance with test method d1238, condition 1902. Melt flow indexer mfi used for plastic flow rate tmi. Spiral flow test piece design with linear length label figure 15.
Manufacturing and rehological analysis of spiral flow test. The melt flow index mfi is a measure of the ease of flow of the melt of a thermoplastic polymer. A flow rate test is a measure of a polymers mass flow rate grams extruded in 10 minutes using a particular orifice under specified conditions of temperature and load. The melt flow index obtaining accurate and relevant results. Part i article pdf available in advances in polymer technology 61. Mp1200 model of melt flow indexer testing machine from.
The melt flow index tester is used for determination of the melt flow rate of various materials such as plastic granules. Melt flow indexer mfi used for plastic flow rate tmi model. Because of the difficulty in the online measurement of mfi, a large number of mfi estimation and correlation methods have been proposed. Both melt flow and rheology tests can be very helpful tools for qc monitoring and development of polymers. Standard test method for melt flow rates of thermoplastics. Knowing the mfi of a polymer is vital to anticipating and controlling its processing. The protocol is followed in general except for the specific instructions presented in steps b f of this procedure. Screenshots of autodesk fill simulation for varying injection pressure figure 16. Machines that determine flow rate are generally called melt indexers. Melt flow indexermfi are used for military uniforms, canvas, canvas, labor insurance products. Astmd1238 standard test method for melt flow rates of. Melt flow index tester, melt flow index tester manufacturers and suppliers india presto group 1. The melt flow index mfi is a measure of the ease of flow of the melt of a thermoplastic.
The tester conforms to all national and international melt flow resistance standards, including bs en iso 13 and astm d1238. It is a widely used product in plastics and polymer industry. Melt flow system the 6mba is the basic model offered within the rayran range of melt flow indexers. Melt flow index tester is widely used to test the flow rate of the polymer granules. Gbt36822000, as well as iso1397, astm d1238,jis k7210 and other standards involving main parameters. From melt flow index to rheogram welcome to ias fellows. In addition, melting point and melt flow index mfi of the composites have been determined.
Screenshot of the spiral flow test piece design figure 14. Investigation of melt flow index and impact strength of. Drk208 series melt flow rate instrument is used to test the thermoplastic polymer flow properties in the viscous flow state. Materiallevel testing involved rheological measurements on the thermoplastics using a melt flow index mfi or mfr instrument. The melt flow index value allows for direct comparison of materials to each other and is a valuable tool for quality assurance. The mfi is a determination of the flow ability of thermoplastic materials. Different standardised conditions of extrusion temperatures and pres. Pdf determining the melt flow index of polypropylene.
Melt flow index tester saumya technocrates plastic. In this respect it is different from a capillary rheometer, a device for measuring viscosity that can control and vary the flow rate of the test while measuring the force required to achieve that flow. Melt flow index tester, melt flow index tester manufacturers. Melt flow rate measures the rate of extrusion of thermoplastics through an orifice at a prescribed temperature and load. Measuring mass flow rate mfr and other polymer properties. Melt flow rate testing part 4 reprinted with permission materials know how by michael sepe from michael p. Flow temperature of pure polypropylene by using a base load. Nov, 20 melt flow index tester, melt flow index tester manufacturers and suppliers india presto group 1. The mfr test quantifies the mass of thermoplastic resin that is extruded by an extrusion plastometer over a fixed time period specified as the mass in grams that would be extruded in 10 minutes under prescribed temperature and mechanical load conditions. Iso 131991 determination of the melt mass flow rate mfr and the melt volume flow rate mvr of thermoplastics3 3. Impact tests and melt flow property are performed on the rotationally molded parts. The mfr test quantifies the mass of thermoplastic resin that is extruded by an extrusion plastometer over a fixed time period specified as the mass in grams that would be extruded in 10 minutes under. It provides a means of measuring flow of a melted material which can be used to differentiate grades as with polyethylene, or. In the present work, a method has been proposed to estimate the rheograms of a melt at temperatures relevant to its processing conditions with the use of a master curve, knowing the melt flow index and glass transition temperature of the material.
More than just a quality control rheological parameter. Some instruments can also calculate the shear rate, shear stress, and viscosity in centipoise. Polyox watersoluble resins melt flow test procedure. The sample can be in the form of virgin resin pellets or ground material from a finished thermoplastic product. No freedom from any patent owned by seller or others is to be inferred.
Melt flow index tester next generation model testing. Melt flow indexer the melt flow indexer is an affordable tabletop instrument that tests the melt flow resistance mfr of a wide range of thermoplastics. While melt flowrate testing is not extremely difficult, and the equipment is not very costly, few. It is defined as the mass of polymer, in grams, flowing in ten minutes through a capillary of a specific diameter and length by a pressure applied via prescribed alternative gravimetric weights for alternative prescribed temperatures. Melt flow index mfi specialist testing instruments aml.
The mp1200 is available in two distinct versions, a manual version model mp1200, and a motorized version model mp1200m. Astm d1238 standard test method for melt flow rates of. The melting property of thermoplastic material can be checked by equipment called a melt flow tester fig. Jul 24, 2014 presto group is the manufacturer and supplier of melt flow index tester nxg model testing machines. Plastic melt flow index testing machine meets the demands of gbt36822000, as well as iso1397, astm d1238,jis k7210 and other standards involving main parameters. Tensile properties and melt flow index of polypropylene. It is generally used as an alternative to procedure b on samples having melt flow rates greater than 75 g10 min.