Investigating phase separation in elastomer-toughened adhesives with DMA

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Many of the polymers that are used in adhesives are relatively brittle materials. To improve their toughness, different fillers or toughening agents are incorporated in the adhesive formulations. Phase separation occurs during the process of monomer conversion to polymer. An understanding of the phase separation behavior under different curing conditions and the development of the morphology are important. This editorial summarizes the application of the DMA in the investigation of thermal properties and phase separation in elastomer-toughened ethyl cyanoacrylate adhesive bulk films.

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Measuring Viscoelastic Properties of Fiber-Reinforced Epoxy

When it comes to the characterization of fiber reinforced composites with dynamic measuring techniques many options are available, but they all have pros and cons for different materials and applications. In their paper, Huayamares et al. set out to answer some relevant questions by comparing measurements in 3-point bending and torsion mode. We summarize the main findings of the scientific paper and explain the measurements as well as the corresponding interpretation of the results depending on the use case.

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How to Measure the Expansion of Materials Due to Water Uptake

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In the previous articles, focusing on thermal analysis under humidity, we have seen that thermogravimetric analysis and dynamic mechanical analysis help determine the influence of water on a material or substance. Thermomechanical analysis complements the analysis under humidity.

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How Water Influences the Mechanical Properties of Polymers

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?

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Tire Technology Expo 2020: Efficiency, Optimizing Processes and Eco-Design

NETZSCH_Tire Tech_Rubber

As a leading international platform, Tire Technology Expo 2020 featured the latest product launches and innovations from national and international exhibitors and a number of interesting presentations. Quality assurance and environmental compatibility of raw materials, intermediates and end products remain essential in all phases of this process to reach the next milestone for sustainable growth. 

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Common Causes of Failure of Automotive Thermoplastics

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Failure of injection-molded thermoplastic parts appear in a wide range of forms. Often, the selected material or the production process of parts and components are the cause of the problem. Whenever faulty parts leave the machine, it is important to find the underlying cause of the failure. We selected two common failures of thermoplastics and show how thermal analysis can help determine the cause of failure.

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Transferring Real Operating Conditions from Practice into the Laboratory Using the DMA GABO EPLEXOR®

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The flexibility of the DMA GABO EPLEXOR® through its independent drives allows for the realization of a great variety of test conditions from practical applications in a laboratory setting. Dr. Sahbi Aloui explains how you can use the DMA GABO EPLEXOR® to exactly simulate the load situation of a respective application.

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Kinetic Study for Additive Manufacturing

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Industrial 3D printing processes create functional, end-use parts with mechanically isotropic properties and smooth surface finishes. Read how Prof. Dr. Tim Osswald, Alec Redmann and the team at the University of Wisconsin-Madison worked together with the California-based company Carbon Inc. optimized the thermal curing cycle of  EPX 82 resin used in the their Digital Light SynthesisTM (DLSTM) process.

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