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19. February 2020

The new issue 1/2020 of PU Magazine International has been published!

Read about the North American PU market evaluated by industry experts such as Grace Showalter and Jaime Garza (BASF), Alan Robinson and Prameela Susarla (Dow Chemical Company), Christine Bryant and Richard Skorpenske (Covestro), Matt Aldag and Thomas Rosen (Evonik), Jan Buberl and Pavneet Mumick (Huntsman Polyurethane).

We also present several market reports e.g. on automotive and e-mobility and report on the upcoming Foam Expo North America 2020, that will take place in Novi, Michigan.

Featured technical articles are:

  • Effective additives for improving abrasion resistance in polyurethane elastomers
    (R. Czeiszperger, E. Duckett, J. Duckett, S. Seneker, A. Pastula, D. Mattison, T. Kalinowski, Anderson Development Company)
    Polyurethanes have been long known for excellent abrasion resistance, especially when compared with other materials such as rubber, plastic, and metal. However, the abrasion resistance can be further improved by the addition of additives. In this paper, the effect of various additives on the abrasion resistance (ASTM D5963-Rotary Drum Abrasion) of various polyurethane systems will be presented. Multiple isocyanates, polyol backbones, curatives, stoichiometric ratios, and multiple additives will be evaluated in an effort to identify the most effective routes to improving abrasion resistance without compromising the physical/mechanical properties. The methods of incorporating various additives will be discussed as well.
  • Thermal, mechanical and adhesion properties of polyurethane reactive hot melt adhesives prepared using bio-based 1,3-propanediol and 100 % renewably-sourced poly(trimethylene ether) glycol
    (M. Shen, W. Curtis Anderson Jr., PhD, DuPont Tate & Lyle Bio Products, M. Ruan, G. Wang, East China University of Science and Technology)
    A series of polyurethane (PU) reactive hot melt adhesives (RHMAs) were prepared from 4,4’-diphenylmethane diisocyanate (4,4’-MDI) reacted with poly(1,3-propylene alkanedicarboxylate) diols of different chain lengths, and combined with 100 % renewably-sourced polytrimethylene ether glycol (PO3G) or poly(oxypropylene) glycol (PPG). The morphology and adhesion properties of these PURHMAs were investigated using differential scanning calorimetry (DSC), dynamic mechanical thermal analyzer (DMA) and tensile testing. PURHMAs prepared with the two different polyether diols, PO3G and PPG, generate significantly different values for glass transition temperature, crystallinity properties, open time, and bulk tensile strength. The resultant PURHMAs prepared from poly(1,3-propylene alkanedicarboxylate) and sustainably-derived PO3G exhibit excellent adhesion properties to multiple substrates including plastics (PC, ABS) and metals (aluminum, steel), which is comparable to or better than those prepared from poly(1,6-hexamethylene adipate) diol (PHA) or PPG.
  • Isocyanate-free polyhydroxy urethanes for water-borne coating applications
    (Dr. M. Schmitt, S. Sheikhmous, Dr. C. Schmitz, Prof. V. Strehmel, Prof. B. Strehmel, Hochschule Niederrhein, S. Gomoll, MA, FEW Chemicals, U. Müller, Wood KPlus)
    Polyhydroxy urethanes possess the potential to complement the portfolio of PU coatings and related applications. We describe a promising procedure to obtain waterborne isocyanate-free urethane comprising polymers and their use for coating applications. The synthesis of the polyhydroxy urethanes in solvents bases on a charge stabilization procedure leading to stable water based polyhydroxy urethane dispersions with up to around 40 wt% solid content. Raw material properties, film formation, and coating properties of around 0.1 mm thickness were also explored. First results focus on coatings for wood applications. Interestingly, the hydroxyl offers several possibilities to modify this raw material expanding the availability of this interesting material in coating sciences.
  • Flame retardancy of Polyurethanes
    (Priv.-Doz. Dr. habil. B. Schartel, M. Eng. M. Günther, Bundesanstalt für Materialforschung und -prüfung)
    Polyurethanes (PU) represent one of the most versatile classes of plastics. They are processed and used as thermoplastic, elastomer, and thermoset. The requirements regarding flammability are correspondingly versatile. Depending on the material and the field of application, specific fire tests have to be fulfilled. This paper describes the different concepts used to fulfil these requirements by choosing the right raw materials and flame retardants.
  • Global automotive markets 2020 - Industry under economic and transformation pressure
    (Prof. Dr. F. Dudenhöffer, CAR – Center Automotive Research)
    The automotive industry is under economic and transformation pressure worldwide. On the one hand, the transition to electric mobility must be shouldered. On the other hand, the poor state of the industry as a result of the US customs wars under President Donald Trump is causing concern. Switching to electro mobility will result in the loss of jobs in the industry, which cannot be compensated for by the growth processes in the coming years. Important value creation in the internal combustion engine sector will be lost bit by bit and replaced by highly automated battery and electric motor production.
  • AutomotiveInnovations 2019 and Electromobility Report 2020
    (Prof. Dr. S. Bratzel, Center of Automotive Management (CAM))
    The Center of Automotive Management (CAM) at University of Applied Sciences of Economy (FHDW) in Bergisch Gladbach, Germany, regularly examines the innovations of automotive manufacturers in the field of electromobility, as well as sales developments and trends in important automotive key markets. Since 2005, vehicle technology innovations of currently more than 40 automotive manufacturers have been surveyed each quarter according to approximately 50 defined criteria such as field of technology, innovation type, originality, maturity level, etc. and individually evaluated using the MOBIL (Maturity, Originality, Benefit, Innovation Level) approach. The complete study AutomotiveInnovations 2019 identifies the future trends of automotive manufacturers from countries such as Europe, Japan, the USA, and China. The Electromobility Report regularly analyses the electromobility market and the sales developments of the automotive manufacturers. The focus is on the core markets of China, the USA and the European Union. The following report presents some key statements of CAM’s current reports “AutomotiveInnovations 2019” and “Electromobility Report 2020”.

Further information about the new issue at https://www.gupta-verlag.com/magazines/pu-magazine-international/01-2020.

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