The processing of highly reactive resin systems requires a detailed understanding of the material behavior during component manufacture. The characterization of systems using DSC to date has reached its limits, especially in the case of polyurethanes. A specially developed measuring cell, on the other hand, delivers better results.

Measuring Cell Enables Characterization of Fast-Reacting Polyurethanes and Epoxy Resins

Messtechnik

Kunststoff Werkstoffe

Harze, Epoxid

Duroplaste

Polyurethan

Materialcharakterisierung

Software

Simulation

Sharp Look at Reactive Resins

The Polyurethanes division of Huntsman has announced the launch of Vitrox ABR adhesives – a new range of specialty, two-component, polyurethane-based resins that can make the manufacture of abrasive products more flexible, time efficient and cost effective. 

Vitrox ABR Adhesives 

Klebstoffe

For Abrasive Applications 

WACKER is a globally active chemical company with some 13,800 employees and annual sales of around 4.92 billion (2017). Spanning the globe with five business divisions, we currently operate 23 production sites worldwide. WACKER is represented by subsidiaries and sales offices in 28 countries in the Americas, Asia, Australia and Europe.

Wacker Chemie AG  

https://www.wacker.com

Abdeckmassen (Elektronik)

Additive

Beschichtungsmassen

Biokunststoffe

Dichtungen

Drucklufttechnik

Betriebsausrüstung / Betriebsmittel

Mechanische Konstruktionselemente

Maschinenelemente

Füllstoffe für Kunststoffe

Chemisches Fügeverfahren

Verbindungstechnik Verfahren

Klebstoffentferner

Kühlelemente, passive

Kühlkörper

Elektromechanik

Lackieren

Chemisches Bearbeiten (Auftragen)

Oberflächentechnik

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Polyacetale

Thermoplaste

Polyvinylacetat

Polyvinylalkohol

Reinigen und Vorbehandeln

Silikone

Teilereinigung

Tenside-Industrie

Verarbeitungshilfmittel

Waschen und Entfetten

Kunststoff-Aufbereitung

Kunststoffverarbeitung: Verfahren

Weichmacher

Emerald‘s high performance antioxidants, plasticizers, nucleating agents, epoxy resins and modifiers are the key components you need to ensure lasting performance and optimize processing characteristics. Today‘s toughest, most flexible plastics rely on Emerald‘s innovative chemistry and expertise. Featuring:

Emerald Performance Materials  

https://www.emeraldmaterials.com

Antioxidantien

Beschichten von Kunststoffen

Beschichten von Metallen, allgemein

Farbstoffe

Harze

Holz

Kautschuk / Elastomere

Pigmente

Pultrusion

Stabilisatoren

Verbundwerkstoffe / Werkstoffverbunde

Vernetzungsmittel

are continuing their advance as lightweight engineering materials. An important factor in the part design is the orientation of the fibers in the loading direction. However, the method of laying individual fiber rovings in the direction of force is almost never used. It is facilitated by a new process in which a robot tracks the lines of force and fixes the filaments with a cold adhesive system. 

Kohlenstofffasern / -matten

Faserverarbeitung

Verbindungstechnik

Fiber Composites: Adhesive Fixing of Rovings Increases Load Bearing 

In the medical device field, materials and end products must satisfy extremely demanding requirements. Adhesives are being used to an ever-increasing degree to join individual components, with a trend toward techniques employing light-curing adhesives 

Trends at the Exhibition: Biocompatible Thanks to the Process 

Bonding plastics poses a challenge because of the special problems associated with low-energy surfaces. While these can prove intriguing for researchers and users alike, they can be resolved successfully thanks to innovative adhesive technologies and high-performance bonding solutions. 

Surfaces: The Art of Strong Bonds 

At the European Coatings Show 2015, Wacker Chemie AG, Munich, Germany, will introduce novel, silane-terminated polymers for the formulation of industrial adhesives and for sealing flat surfaces. Known as Geniosil XT, the new binder makes it possible to produce materials that are extremely tear-resistant and at the same time highly elastic. 

Highly Ductile and Tear-Resistant 

Polyether

Silane-Terminated Polymers for High-Performance Adhesives 

Resulting from a partnership agreement signed in 2011, a new lactide (Puralact B3, Corbion) caprolactone co-polymer (Capa, Perstorp) has been developed by Perstorp Holding AB, Malmö, Sweden, and Corbion, Amsterdam, Netherlands, that delivers superior benefits in hot melt adhesive applications. 

Fully Compostable 

Lactide Caprolactone Copolymer for Hot Melt Adhesives 

Panacol-Elosol GmbH, Steinbach/Taunus, Germany, presents a new adhesive from its Vitralit UV 4050s series: Vitralit UV 4050 MV is best suited for bonding plastics, especially for medtech applications. With 450 to 650 mPas Vitralit UV 4050 MV is of medium viscosity. When cured it shows a very good flexibility and an excellent stability. This transparent adhesive has a very low shrinkage of only 2%. 

Vitralit UV 4050 MV 

UV Adhesive for Plastic Bonds 

Huntsman Advanced Materials has announced at JEC World 2016 that it has developed a new epoxy resin system and a novel and cost efficient process to give an entirely new compression molding concept. By combining a new fast-cure Araldite epoxy chemistry with a new compression molding process, Huntsman is not only facilitating the simple production of structural composite parts, but is also enabling cycle times as low as one minute without any further post-curing. For high-volume applications such as automotive, this process makes cost-efficient manufacture of high-performance structural parts using thermoset technology a reality. 

New Compression Molding Process with Araldite 

One-Minute Cycle Time for Structural Composites 

Huntsman introduces two new Araldite adhesives with extended performance in automotive assembly applications. Araldite 2021-1 and 2022-1 will see vehicle manufacturers and the automotive aftermarket benefitting from increased levels of productivity and performance on structural adhesive applications. 

Extend Performance in Automotive Assembly Applications 

Araldite 2021-1 and 2022-1 

Plastic/metal hybrid structures for industrial applications have been established for years, e. g. for front-end carriers in automotive vehicles. Previously, in assembly injection molding joints were based on form/force fit or friction locking. Novel adhesion promoters now permit adhesive bonding of hybrid structures with improved component properties. 

Primer Joins Metal and Plastic Components with Adhesive Bond 

Verbindungstechnik, hybride

Adhesion Promoter for Unequal Pairs 

Demand for commercial aircraft is booming worldwide. With the new flame-retardant structural adhesive, Delo-Duopox AB8162, Delo Industrie Klebstoffe GmbH & Co. KGaA, Windach, Germany wants to make the production faster. The company has developed its new, two-component epoxy resin especially for lightweight structural joints in aircraft interiors, focusing on fast build-up of strength. The resin cures at room temperature, but has been optimized for temperature-accelerated curing. For example, at a temperature of 60 °C, a curing time of 15 minutes is sufficient to achieve functional strength (>= 10 MPa). Consequently, components can be further processed after this time. 

Flame-Retardant Structural Adhesive Delo-Duopox AB8162 

Lightweight Construction in Aircraft Interiors 

Dow and Menshen present a new transformative Reverse Spout Sealing Technology that enables the production of spouted pouches made of mono-material films. This technology allows converters to address the recycling criteria for flexible packaging and can help brands meet their sustainability packaging goals.  

Reversing the Traditional Sealing Process Brought the Solution 

Kunststoffverarbeitung: Maschinen und Komponenten

Kunststoff-Recycling

Dow and Menshen bring Sustainable Design to Spouted Pouches 

Potting Compounds and Adhesives for Electrical Vehicles

Protection of Sensitive Charging Electronics

For the successful implementation of electromobility, not only the vehicles but also the associated charging infrastructure play a decisive role. Various technologies are currently used to charge electric vehicles.

Wall boxes are used for private charging, while public charging is done mainly using cable-based charging stations incorporating DC (direct current) and AC (alternating current) technology operating at a wide range of power outputs. Wireless charging systems that utilize inductive technology are already in use – mainly, for now, in fork lifts, warehouse trucks and last-mile vehicles, although this technology would seem to have enormous potential, for buses and especially for taxi ranks. Aside from the charging process itself, an on-board-charger (OBC) in the vehicle authenticates the vehicle at the charging station, transforms alternating current into direct current, manages communication between the vehicle and the charging station, and manages the battery.

Wevo-Chemie has developed potting compounds and adhesives to reliably protect the sensitive electrical and electronic components in charging systems. According to the company, they meet the high requirements of these systems in terms of operating temperature and mechanical stress. The potting compounds and adhesives are offered based on polyurethane (PU), epoxy resin as well as silicone.

Because they are used outside, sensitive components are subject to changing and often challenging ambient conditions. The materials presented provide electrical insulation and prevent moisture from getting in. For instance, a water-repellent and flame-retardant potting compound has been developed with UL certification in order to protect charging plugs; it insulates the plug, which, among other things, protects users against electric shocks.

Thermal management also plays an important role, especially in fast charging stations that can have power outputs of up to 360 kW. Thermally conductive potting compounds and thermal interface materials based on polyurethane, epoxy resin and silicone help to channel heat quickly and safely away from transformers, capacitors and batteries to heat sinks and the surrounding environment. OBCs also contain power electronic components as well as transformers, chokes and capacitors, and these are getting hotter and hotter as they become smaller and more compact. Wevo has also developed special, thermally conductive potting compounds and gap fillers for these applications, which channel heat away quickly and can withstand temperatures of up to 160 °C.

<a href="https://www.wevo-chemie.de/en/" target="_blank">www.wevo-chemie.de</a>

WEVO-CHEMIE GmbH  

http://www.wevo-chemie.de/

Ausgabenartikel

For the electronics of charging stations, Wevo offers temperature-stable adhesives and potting compounds based on silicone, epoxy resin and PU.

16:9

Prod_Wevo_nicht online

Kfz-Elektronik

Elektronik

issue 09/2022

issue 08/2022

issue 07/2022

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