RHEOLOGICAL TESTING
Rheological properties of plastics can be determined using various testing methods. To verify your products with regard to quality standards and key rheological characteristics, simply send them to us for analysis.
Rheology is defined as the scientific discipline dealing with the flow and deformation behavior of materials up to their melting temperature. The rheological properties of a plastic material can be determined through multiple rheological test procedures.
In our testing laboratory, accredited according to DIN EN ISO/IEC 17025, we conduct the following tests to determine the rheological characteristics of your plastic material:
- Determination of the Melt Flow Index (MFI) of plastics: Melt Mass-Flow Rate (MFR) and Melt Volume-Flow Rate (MVR)
- Determination of the viscosity number of plastics (solution viscosity)
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Rheological Plastics Testing
The Melt Flow Index is used to characterize melt behavior and—depending on the method—provides information on mass (MFR) or volume per time (MVR). A melt index testing device determines the rheological parameters MFR (Melt Mass-Flow Rate) and MVR (Melt Volume-Flow Rate) for plastics.
The viscosity number is determined using a capillary viscometer. These measured values serve as essential quality parameters for plastics processing. We evaluate the differences between raw material and final component. This allows us to quantify material degradation that may occur during your production process.
In our plastics laboratory accredited according to DIN EN ISO/IEC 17025, we provide the following rheological testing services:
- DIN EN ISO 1133-1: Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics
- DIN EN ISO 1628-1: Determination of the viscosity of polymers in dilute solution using capillary viscometers – Part 1: General principles
- DIN EN ISO 1628-2: Determination of the viscosity of polymers in dilute solution using capillary viscometers – Part 2: Poly(vinyl chloride) resins
- DIN EN ISO 1628-5: Determination of the viscosity of polymers in dilute solution using capillary viscometers – Part 5: Thermoplastic polyester (TP) homopolymers and copolymers
- ISO 1628-4: Determination of the viscosity of polymers in dilute solution using capillary viscometers – Part 4: Polycarbonate (PC) moulding and extrusion materials
- DIN EN ISO 307: Polyamides – Determination of viscosity number
In our state-of-the-art testing laboratory, we evaluate your products according to your specifications and current standards—efficiently and professionally. If you have questions regarding product properties, behavior, or require special test conditions, we are available for direct support. We look forward to receiving your request for rheological plastics testing.