TECHNOLOGY | MATERIALS TESTING
Right: The 5969 dual column tensile tester can be equipped for automated testing work
Below: Instron’s HV Series of HDT and Vicat testing
machines are designed for efficient lab operation
beyond the phase change of their plastic com- pounds. The Transient Line Source (needle probe) sensor allows for thermal conductivity measure- ment of polymer melts. The simple needle probe is controlled by C-Therm’s TECAS software for analysis of plastics with thermal conductivities from 0.1-6 W/mK at temperatures from -50°C to 200°C. Dynisco has developed the ViscoIndicator Online Rheometer, which is specifically designed for thermoplastics, to provide continuous measure- ments of melt flow rate, apparent viscosity, or intrin- sic viscosity directly on an extruder. The company says that the ViscoIndicator brings a new level of ease of use and lower entry price point to the market of online rheological instrumentation. “We have seen a shift in today’s markets where each and every processor needs to understand the material being specified and what happens to the rheologi- cal properties of the material during their process,” says John Biagioni, President of Dynisco. “Until now the high costs of full featured online rheometers, the need to modify existing extruders, and the expensive installation and rigging charges kept the benefits of an online rheometer out of reach.” The ViscoIndicator consists of three main component parts. A Rheological Sensing Unit (RSU) connects directly to the process and samples, conditions, and measures the properties of the resin. It can be mounted on an extruder, reactor, or molten polymer transfer line in various orientations. A Rheological Control Unit (RCU) controls the measurement parameters (temperature, pressure, flow rate) and provides communication to the Human Machine Interface (HMI). The HMI remotely manages test parameters and provides measured and computed material properties. Rheological data is displayed in a simple intuitive display that shows melt low rate, intrinsic viscosity, or apparent viscosity with a simple numeric value or a trending
graph with high/low limits. For historical purposes the data can be exported for further analysis or for quality control purposes. Additionally, the data can be viewed on the machine or by remote connec- tion with any Windows 10 device.
Mechanical testing For static tensile, compression, bend, peel, shear, tear and cyclic tests, Instron has developed the versatile 5969 electromechanical dual column table-top system for mid-range mechanical testing. Designed for a nominal load of 10kN and supplied with pneumatic grips, it can be used in combina- tion with an automatic contacting Instron AutoX extensometer to run automated test routines that comply with all common testing standards. Automated tensile testing is provided by the
TestMaster AT3 unit. Once the tray has been loaded and the start button pushed, its automated specimen loading feature helps ensure repeatabil- ity and reproducibility of testing and results, minimising human influence, increasing safety by keeping the operator away from the testing area, and improving ergonomics by virtually eliminating repetitive motions associated with high volume manual testing. All test runs will be controlled, documented and stored in a database using Instron’s universal Bluehill 3 testing software. For impact testing of polymers, Instron has developed the CEAST 9350 floor standing drop tower, which is designed to deliver 0.59 to 757 J or up to 1,800 J. It can be supplied together with an environmental chamber and a motorised CEAST 9050 impact pendulum. Both systems can be operated using Instron’s CEAST VisualIMPACT software, which id designed to record force and
76 COMPOUNDING WORLD | September 2017
www.compoundingworld.com
PHOTO: INSTRON
PHOTO: INSTRON
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