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Technology Report

151 to 200 from 422 News

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  • 04-25-2016

    Carbon Dioxide as Starting Material

    Furandicarboxylic acid (FDCA) is used as an alternative for terephthalic acid during polyester production. New research results show that under certain conditions carbon dioxide is consumed during production of FDCA. This could reduce the CO2 footprint of plastic packaging significantly.   more

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  • 04-25-2016

    Consolidation of CFRP with IR Radiation

    A new process for consolidating CFRP uses IR radiation to heat the plastic. Conducting the process in vacuum prevents the plastic from oxidizing.   more

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  • 02-29-2016

    Solar Absorber Made from PPS

    Special PPS blends that can withstand high thermal and mechanical loads have been developed in the course of a research project. The material can be extruded to produce large twin-wall sheet.   more

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  • 02-29-2016

    Efficient Charge Transport in Polymer Films

    Polymer films in electronic components must have high conductivity perpendicular to the plane of the film. Research results show that this goal can also be achieved without doping by aligning the polymer chains in a controlled manner.   more

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  • 02-29-2016

    Shorter Cycles for RTM Process

    By using variotherm mold temperature control, the cross-linking reaction during the RTM process can be deliberately accelerated. This shortens the cycle times considerably.   more

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  • 01-18-2016

    Fiber-Reinforced Plastic Bicycle Frame

    A newly developed plastic bicycle frame consists of two thermoplastic half-shells that are joined together. The parts exhibit a very good physical properties and can be manufactured in large quantities at low cost.   more

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  • 12-22-2015

    Plastic Microparticles in the Rhine

    As part of a research study, it was determined that, on average, the surface water of the Rhine contains just under one plastic mircroparticle per square meter. As a result, about 10 t of such plastic particles are discharged into the North Sea annually.   more

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  • 12-22-2015

    Building with Synthetic Granulates

    Plastic elements with a defined geometry can be used to create architectural structures without a binding matrix. The modeling of such systems with a very large number of particles is aided by simulation.   more

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  • 11-30-2015

    Electrochemically Neutral PA Compounds

    Halogenated PA stabilizers can cause corrosion of the metal contacts in electronic assemblies. This destructive phenomenon can be prevented with the aid of newly developed, electrochemically neutral PA compounds.   more

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  • 11-30-2015

    Plastic Jacketing for Steel Pipe

    A jacket consisting of multiple layers of plastic is used to provide corrosion protection for steel pipes. To prevent crack propagation, a recently published patent suggests bonding the two layers only via friction.   more

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  • 11-16-2015

    Constant Mold Breathing

    With the aid of newly developed software, mold breathing during injection molding can be calculated on monitored. If the process conditions change, the clamping force is adjusted automatically to keep the mold breathing constant.   more

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  • 11-03-2015

    Homogeneous Melts at High Speeds

    Plasticating capacity during extrusion can be increased by increasing screw rpm. However, this entails the risk of unsatisfactory melt homogeneity. Investigations show that with a special mixing element the physical and thermal homogeneity of the melt can be improved.   more

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  • 10-20-2015

    A Second Life of Carbon Fibers

    A special processing technique makes it possible to use carbon fibers from production waste for compounding of carbon fiber-reinforced thermoplastics. These materials can substitute glass fiber reinforced plastics in automobile center consoles, for instance.   more

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  • 10-06-2015

    Injection Pressure Influences Flow Behavior

    The injection pressure has a significant influence on the viscosity of the polymer melt during injection molding. However, since the pressure-dependent viscosity data are usually not available, this relationship is often neglected in actual practice.   more

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  • 09-07-2015

    Thermoactive Piping System

    Retrofitting of ventilation ducts in buildings is often very complex because of unfavorable structural conditions. A thermoactive piping system that is installed as a flexible duct and then cured can simply installation.   more

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  • 09-03-2015

    Active Decoupling with Dielectric Elastomers

    Dielectric elastomers can convert electrical energy directly into mechanical work. This effect is now being used to minimize the propagation of vibrations actively.   more

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  • 08-12-2015

    Aluminum Production Molds

    Aluminum molds have a lower density and higher thermal conductivity than steel molds. Despite this, in injection molding they are used almost only for production of prototypes. Investigations have shown that under certain circumstances aluminum can also be an interesting alternative to steel for volume production.   more

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  • 07-13-2015

    Fiber Spraying Process for Efficient Preform Production

    Using a novel fiber spraying process, the orientation of fibers during fiber deposition can be adjusted as desired. By processing rovings directly, the effort associated with producing preforms is considerably less than with conventional production methods.   more

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  • 07-13-2015

    Optimized Printing Process for Organic Electronics

    Manufacturing polymer-based electronic component involves printing of conductive, semi-conductive or insulating layers on a carrier film. Even minor changes in the physical-chemical process conditions can have a significant effect on the properties of the layers.   more

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  • 06-16-2015

    Bicycle Bottom Bracket Bearing with Torque Sensor

    To determine the speed, bottom bracket bearings on electric bicycles are equipped with sensors. A support element made from PA66 can facilitate installation and at the same time increase reliability.   more

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  • 06-15-2015

    New Seal Concept for the RTM Process

    Sealing cord applied directly to the edge of the fiber preform represents an alternative for sealing RTM compression molds. Since a new, unused seal is applied in every cycle, molded part quality is increased.   more

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  • 05-29-2015

    Artificial Blood Vessels of TPU

    In the case of vascular diseases such as arteriosclerosis, a bypass operation is frequently the only solution. Normally, the patient's own...   more

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  • 05-26-2015

    Highly Crystalline PET Parts

    Using a new process, it is possible to compact crystalline PET powder through application of heat and pressure without melting the material completely. This yields highly crystalline parts with good mechanical properties.   more

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  • 05-11-2015

    Cylinder Housing of Glass Fiber-Reinforced Phenolic Resin

    Researchers have developed a plastic cylinder housing that weighs approximately 20% less than its aluminum counterpart. In addition to the weight savings, it might be possible to manufacture engine blocks from fiber-reinforced plastics much more economically than from aluminum   more

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  • 05-07-2015

    Automated Production of Thermoplastic Composite Blanks

    It is now possible to produce thermoplastic composite blanks from UD tape in an automated process. The fiber orientations are tailored to the specific application and desired load-bearing capability.   more

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  • 04-13-2015

    Façade System Based on Biocomposites

    A new façade system based on renewable raw materials is reported to increase the energy efficiency in building construction. The energy...   more

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  • 03-11-2015

    Smooth Surfaces through Controlled Crystallization

    Short glass fiber-reinforced PA compounds with controlled crystallization can replicate mold surfaces very well. As a result, both glass fiber agglomerations and flow/knit lines are significantly less visible on the surface than with conventional PA injection molding compounds.   more

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  • 02-18-2015

    Fast Determination of Degree of Cross-Linking

    The degree of cross-linking in polyethylene can be determined precisely with rheological measurements. Compared to determining the gel content, this method yields results much faster.   more

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  • 02-04-2015

    PMMA for Passenger Car Glazing

    A newly developed PMMA molding compound has a property profile optimized for automobile glazing requirements. Compared to other thermoplastics, the material exhibits little stress birefringence and high weathering resistance.   more

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  • 01-07-2015

    Lighter Seatback Thanks to Carbon Fiber Structure

    A newly developed seatback structure for motor vehicles drastically reduces the use of steel and lightweight alloys. While offering the same performance, the parts are more than 40 lighter than previously produced seatback structures.   more

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  • 12-17-2014

    Greater Thermal Conductivity through Molecular Coupling

    Researchers at the University of Michigan have succeeded in creating hydrogen bonds between individual chain molecules in amorphous polymers. This increases the thermal conductivity of the material significantly without affecting other material properties.   more

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  • 12-09-2014

    Better Bonding of Carbon Fibers

    A new process increases the adhesion of carbon fibers to the surrounding matrix. This involves grafting of polymer chains to the surface of the fibers. In this way, it is possible to achieve outstanding fiber-matrix bonding without limiting the stability of the fibers.   more

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  • 11-25-2014

    Dual-Cure Adhesive for Fiber-Reinforced Composites

    Adhesives with variable elasticity significantly extend the service life of adhesive bonds. The layer of adhesive is elastic at the edges and, as a result, can better absorb sudden stresses. In contrast, at its center the layer of adhesive retains its high strength.   more

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  • 11-11-2014

    Direct Metal Coating of Injection Molded Parts

    Using a newly developed metal injection unit, it is now possible to apply metal structures to plastic parts directly in the injection mold....   more

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  • 10-28-2014

    Selective Heating of Natural Fiber-Reinforced Thermoplastic Composite Sheet

    Natural fiber-reinforced thermoplastic composite sheet can be heated quickly to the forming temperature without damaging the fibers thermally by using infrared radiation. This is based on the fact that the PP matrix and the fibers have different absorption spectra.   more

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  • 10-06-2014

    Batteries from a Printer

    New research results show that it is possible to produce flexible, polymer-based batteries by means of screen or ink jet printing. The batteries can be charged in a few minutes and are suitable for intelligent packaging, for instance.   more

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  • 09-30-2014

    Production of Sheet from Partially Melted Pellets

    A new manufacturing technique for plastic sheet employs only partially melted pellets instead of fully melted material. This significantly accelerates both processing step itself and cooling to room temperature.   more

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  • 09-30-2014

    Fluid-Conducting Hollow PU Parts

    By combining the projectile injection technique (PIT) and reaction injection molding, it is possible to manufacture continuous fiber-reinforced hose-like molded PU parts with outstanding burst characteristics. In addition, they have a very smooth inside surface.   more

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  • 09-29-2014

    Flexible Division of Labor with Two-Arm Robots

    A new generation of robots with two arms and human-like stature is able to replicate human motion. This makes flexible division of labor between humans and robots possible.   more

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  • 09-29-2014

    Simple Processing of Epoxy Resin

    A new, thermosetting matrix system with thermoplastic characteristics simplifies production of fiber-reinforced composite parts. The material can be processed in power or sheet form.   more

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  • 08-11-2014

    Tungsten Compounds for Radiation Protection

    Protective components for radiological medical devices can be manufactured from a tungsten compound that shields against radiation just as well as lead. The material opens up new design opportunities and reduces manufacturing costs significantly.   more

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  • 08-11-2014

    Microstructure Reduces Stick-Slip Effect

    Snake skins have microstructures that exhibit special friction properties and in this way permit effective locomotion. Transferring these microstructures to polymer surfaces could help to reduce material wear.   more

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  • 08-05-2014

    Metal Surfaces for Injection Molded Parts

    In the newly developed in-mold metal spraying (IMMS) process, a metal film is first applied to the surface of the mold cavity. During subsequent backmolding, the metal film bonds to the injection molded part.   more

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  • 08-05-2014

    Polymer Banknotes

    Starting in 2016, banknotes made from biaxially oriented PP will be issued in the United Kingdom. The material is more durable than paper and permits use of additional security features.   more

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  • 06-23-2014

    Fast-Setting Tooth Fillings

    With the aid of germanium compounds, it is possible to accelerate the polymerization of acrylates used for tooth fillings. These photoactive molecules allow light to penetrate deep, allowing the material to cure faster.   more

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  • 06-17-2014

    Thermal Conductivity of Graphene

    Experiments show that the thermal conductivity of graphene increases logarithmically as the thickness of the graphene layer increases. This phenomenon could possibly be used for passive cooling of electronic components.   more

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  • 05-06-2014

    Deformation of Inserts

    Inserts are subjected to high loads as they are being overmolded with the plastics melt in the course of insert molding. With the aid of a newly developed computational method, it is possible to more accurately predict the actual loads on the insert.   more

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  • 04-30-2014

    Higher Efficiency during Melt Filtration

    A redesigned scraper and discharge system increases the performance of melt filtration systems. The need for less service is an additional benefit.   more

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  • 04-28-2014

    Production-Integrated Inspection of CFP Assemblies

    Carbon fiber-reinforced plastics (CFP) display their exceptional mechanical properties only if the material has been processed properly. Using an eddy current-based diagnostic system, it is possible to inspect the CFP as it moves along the processing chain.   more

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  • 04-28-2014

    Recycling of PE-X

    A new method for recycling PE-X uses a single-screw extruder equipped with two water-cooled ultrasonic heads. During extrusion the ultrasonic action breaks the cross-links between the molecular chains.   more

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