Generally, capillary rheometers are used to measure melt properties at higher shear rates compared to rotational rheometers, allowing determination of flow behavior under typical processing conditions. Thermoplastics can be characterized using a Kinexus Rotational Rheometer, but also with the Rosand Capillary Rheometer.
Thermoplastic polymer melts are widely used in many modern industrial processes to manufacture a multitude of objects. Learn which properties measured with a Kinexus rotational rheometer help solve real-life polymer processing problems.
One of the principle reasons that polymers are used so widely is because they are relatively cheap to form into complex shapes in the molten state which is a huge change in rheology from a solid starting material through to a solid end product. Learn how to determine flow curves, carry out creep tests and measure viscous and elastic properties.
It is imperative to understand how thermoplastics flow when being processed. Learn about the time dependence of flow properties and other important characteristics.
Thermoplastics are materials that become pliable when heated to a specific temperature and solidify upon cooling. Learn about their molecular structure, amorphous and semi-crystalline thermoplastics and more!
Thermoplastics and thermosets are important materials in Additive Manufacturing. Learn about the difference between monomers and polymers, their molecular structures and distinct characteristics.
Why is water a problem for a part made of thermoplastics? Textbooks describe that the water uptake for some types of polyamide (PA) is really high in both 50% relative humidity and in water. This alone would not be the problem, but the uptake of water leads to very different properties of materials. How can dynamic mechanical analysis (DMA) help with this issue?
PMMI (Polymethacrylmethylimide) is a thermoplastic polymer. As it is an amorphous polymer, it features high transparency. The case study describes how thermal analysis methods can be employed to discover everything about the material.
Bringing cost, material, production process and quality successfully together is one of the key objectives in the injection molding industry. If the production process is not correct or if the material does not adhere to the specified requirements, low quality and thus scrap production is the consequence. Ideally, all of these four factors should be able to be managed in order to avoid scrap production. Thermal analysis methods offer valued approaches.
Thermoplastic materials have enjoyed increasing popularity in automotive manufacturing. Current environmental and economic concerns additionally raise the awareness of the various advantages of the material. Learn which materials are the most popular in today’s cars.