The rstcps rheometer is great for cone and plate as well as plate to plate system for small volumes and wide shear rate ranges. With the user interface of the rheocompass software you can run fully automated. It makes use of a userfriendly software called rheoplus. Thermohaake rs600 rheometer complete package with dell pc and windows software, peltier heatcool control, cone plate, plateplate configuration. Described is a detachable fixture for a rotational rheometer, the sentmanat extensional rheometer universal testing platform, which incorporates dual windup drums to ensure a truly uniform extensional deformation during uniaxial extension experiments on polymers melts and elastomers. Ser sentmanat extensional rheometer tool for extensional properties universal adaptersfor individual rotors, e. Sentmanat extensional rheometer ser for the thermo scientific. Extensional rheometer cser using three different pe materials.
Pressure dependence of viscosity of polymers and its importance to. Extensional rheology in polymer processing ta instruments. Rheocalct software can analyze data, generate multiple plot overlays, print tabular data, run math models and perform other timesaving routines. Extensional rheology in polymer processing extensional flows dominate many polymer processes, including blow molding, film blowing, fiber spinning, thermoforming and many others. Extensional viscosity was measured using the ser device in mcr301 rheometer with ctd450 convection oven anton paar at constant hencky strain rates from 0. In this study, we propose a new way of optimising the formulation of ferrofluids for oilspill cleanup processes, based on the rheological behaviour under extensional flow and magnetic fields. The evfs compact, frictionfree, design delivers the ideal platform for performing extensional measurements that complement traditional shear rheology. Rheometer is a sophisticated equipment that has provision to set and measure more parameters to understand the flow behavior of fluids that cannot be represented by a single value of viscosity, also called complex fluids or soft matter.
While viscosity is a measurement usually applicable in determining the resistance of a fluid, a rheometer is used to measure fluids that cannot be defined by a single viscosity value. Tensile properties of mineral fibers determined with. Figure 3 shows the results of measurements on branched ldpe performed with a mars rheometer and the ser tool. Measuring the extensional viscosity can reveal a lot of critical information about the behavior of polyolefins under during fiber spinning or film blowing. Different commercial ferrofluids ffs, consisting of a set of six ferrofluids with different magnetic saturation and particle concentration, were characterised in a capillary breakup extensional. Srf, uxf, ser, tribo, pp, cp, modified ring dent, tack, relative humidity or moisture content is a crucial parameter in many different applications. Extensional rheology system supports melts and semisolids. In these processes, the occurrence of strain hardening response is desirable and elongational rheology data can.
The extensional properties of the sample are calculated automatically and presented directly in the software. The seymour concept for a portable extensional rheometer has been demonstrated. With accessories for practically every application and software for all user levels, thermo scientific haake rheometers are versatile, innovative instruments proven to. Uv curing cell for an individual arrangement of optical components p022 170kb. Used in combination with the ser system, the xim miniature mixer attachment converts your rheometer into a miniature. Development of a novel and dynamic shear rheometer based. Powerful rheovision software is supplied with the pvs rheometer for full automation and control of all test parameters and comprehensive data collectionanalysis. The second drum is driven by the first, at the same rotation speed in opposite direction by a set of spur. Sentmanat extensional rheometer ser for the thermo. Issues related to the experimental procedure, namely fixing the sample and controlling the temperature, as well as correction for true sample dimensions in calculation of extensional viscosity of polymer. Haaketm rheowintm measuring and evaluation software. Martin sentmanat xpansion instruments, is based on clamping the sample on two counter rotating windup drums.
The new physica mcr rheometer series is the result of this process. Although originally developed as an extensional rheometer, this highly versatile miniature test platform. The ser system is a new accessory for the haake mars with ctc oven which transforms a rotational shear rheometer in an extensional rheometer for melts and semisolids the measuring principle of the ser system, which was developed by dr. The sentmanat extension rheometer ser 3 extensional rheology system, developed by dr. Comparison between extensional rheological properties of. Extensional rheometry of polymeric fluids and the uniaxial.
Inflation methods fiber spinning extensional rheology tubeless siphon bubble collapse stagnation flows extensional rheology. Visualization of elongation measurements using an ser universal. The mcr rheometer series from anton paar offers you one thing first and foremost. Publication iv examined the experimental and analytical practice and errors in uniaxial extension experiments by sentmanat extensional rheometer ser. Martin sentmanat and can be adapted to the haake mars rheometer. At time t 0, the upper plate is set in motion and the resulting midpoint radius of the filament rtmid and tensile force ftz exerted by the elongating column are measured. In the present work, we overcome the challenge of nonhomogeneity of the velocity field by optimising the shape of a convergingdiverging channel to generate the ideal strainrate profile along the centreline of the flow for use in elongational studies of macromolecules e. Measurement technique and data analysis of extensional. The combination of convection and radiation heating in the ctc guarantees fast temperature changes and an even temperature distribution within the sample. Relative humidity as a new parameter in rheological testing. Processes free fulltext extensional magnetorheology.
Xpansion also provides technical service and support, custom material testing and processing equipment design services, test. The device was successfully employed in a field study investigating pitcher plant fluids in borneo in 2014. Vane rotors for pressure cells for haake mars and haake rheostress 6000 p021 122kb. The thinning and breakup of a fluid filament that is analyzed with the haake caber 1 capillary breakup extensional rheometer provides valuable information on a material. Extra modules increase applications for haake rheometer. The stress is determined from the torque exerted by the drums. Utilising a new generation inline servo motor coupled with digital servo drive technology, the rheoline multifunction rheometer mfr lite is complete with our labline lite software to ensure the highest standards precision of analytical and statistical data of elastomeric properties.
The ser is connected via the ser base adapter to the ser bracket, mounted to the test head of the rheometer. The operat ing temperature range of the ser tool covers 0 c to 315 c. Furthermore, a test method and a sample preparation. Xpansion instruments is an innovative scientific instrument manufacturer and world leader in extensional melt rheometer technology, and miniaturescale physical material characterization specializing in rheometer and material testing and processing equipment design, extensional rheology, miniature and broadrange physical material characterzation such as tensile, fracture, tear, adhesion, friction, and peel testing of plastic, rubber, and polymer composite materials. Microfluidic convergingdiverging channels optimised for. Thermo scientific haake rheometer accessories rheology. Transient extensional viscosity of lowdensity polyethylene was measured by sentmanat extensional rheometer in combination with mcr301 rheometer anton paar at different temperatures. A film of polymer is wound on two rotating drums, which apply constant or variable strain rate extensional deformation on the polymer film. Ser extensional rheology system for thermo scientific haake mars p019 4kb. The rheology of polymeric materials under extensional flows can differ significantly from shear flows and it is important to understand this in order to optimize both materials and processes. Measuring the transient extensional rheology of polyethylene melts. Analysis of extensional viscosity for polymer melts by sentmanat extensional rheometer ser. Xpansion instruments is the exclusive manufaturer of the ser sentmanat extensional rheometer universal testing platform, the new paradigm in extensional melt rheology and physical material characterization technology.
We use a new extensional rheology test fixture that has been. Look up words and phrases in comprehensive, reliable bilingual dictionaries and search through billions of online translations. The haake caber 1 capillary breakup extensional rheometer is the only commercially available extensional rheometer to quantify elongational properties of fluids or semisolids. The miniature ser fixture can be easily attached to the rotational rheometer host station and configured to operate with the existing control software. The ser drive shaft connects the motor spindle to the ser, and aligns the motor spindle with the primary rotating drum. The ser is completely integrated in the firmware and software of your mcr rheometer. The extensional rheology system ser turns the rheometer into a universal platform for extensional. This calls for a navigation tool that gives users the complete overview as well as the exact insights they require. Rheological characterization of polymer melts in shear and. Measurement technique and data analysis of extensional viscosity for polymer melts by sentmanat extensional rheometer ser article pdf available in rheologica acta 494. Anton paars new rheocompass software, the most innovative stateoftheart.
Extensional rheology is the science associated with flow and deformations involving the elongation, or stretching, of materials. Extensional simplifying flows aids characterization. Universal extensional fixture and sentmanat extension. Sentmanat extensional rheometer shorter sertool, which can potentially pr. The sentmanat extensional rheometer ser is actually a fixture that can be field installed on shear rheometers. Xpansion instruments extensional rheology and material. Extensional flows dominate many polymer processes, including blow molding, film blowing, fiber spinning, thermoforming and many others. The portable rheometer allows, for the first time, natural complex fluids such as pitcher plant trapping fluid to be studied in an ecological context. Martin sentmanat, consists of two counterrotating drums with intermeshing gears and lowfriction bearings.
Visualization of elongation m ea sur m nt using an sser. The extensional characterization was performed by using the new extensional rheometer serhva01 from xpansion instruments, akron, oh, 14. Full integration in rheometer software temperature ramps at constant rh rh ramps at constant temperature works with single motor and double motor rheometer large range of different geometries. Depending on the extensional rate strain hardening occurs at different times. Convection oven with camera, air or nitrogen gas purge environment. Get ahead of the competition with new, modular advanced rheometer systems for faster, comprehensive material characterization. The ser system, exclusively built by xpansion instruments, was developed by dr. Modifying the calculation by taking into account the changes in sample geometry due to thermal expansion and. The ser sentmanat extension rheometer system extends a conventional steady rotational rheometer into a robust extensional rheometer for melts and semisolids.
An extension for thermo fisher scientifics haake marsmodular advanced rheometer systemturns a conventional steady rotational rheometer into an extensional rheometer for melts and semisolids. A rheometer is a laboratory instrument used to measure the way in which a liquid responds to applied forces. Influence of processing aids on the uniaxial extensional behavior of metallocene polyethylenes. Figure 1 schematic diagram of a filament stretching extensional rheometer fiser.
Measurement technique and data analysis of extensional viscosity. Haake caber 1 capillary breakup extensional rheometer. Says tim haake, general manager at goettfert, extensional or elongational viscosity is important for film, fiber, and foam processing as well as blow molding and is not obtainable with a typical rheometer. A portable extensional rheometer for measuring the. Keywordssersentmanat extensional rheometeruniaxial. Extended material characterization anton paar gmbh. The rotational movement of the rheometer is directly transferred to both drums, which stretch the sample uniformly over the entire stretching area to ensure reliable results. Rheo logical characterization and modeling of linear and branched metallocene polypropylenes prepared by reac. The brookfield rstsst touch screen rheometer is used worldwide for testing pastes, slurries and materials with particulates for yield stress, shear modulus, recovery and creep. By controlling the motor rotation and operating temperature of the host station, the ser can be used to characterize extensional melt flow.