Download Advances in Urethane Science and Technology by Kurt C. Frisch, Daniel Klempner PDF

By Kurt C. Frisch, Daniel Klempner

ISBN-10: 1859572758

ISBN-13: 9781859572757

Innovative advancements in polyurethane chemistry, houses, tactics and purposes issues contain polyurethane foams, elastomers, structural adhesives and extra the newest quantity in a well-liked sequence for the expert the most recent quantity within the Advances in Urethane technological know-how and expertise sequence, this ebook offers impressive technical reviews on present advancements within the box. quantity 14 presents innovative details in urethane chemistry, formulations, homes advancements and fabrics. The authors are globally famous leaders within the quarter of polymer learn and improvement.

In addition to in-depth assurance of developments in polyurethane expertise, this quantity is seriously illustrated with over ninety graphs, forty six tables and eighty five schematics. The illustrations make stronger the several themes lined.

This new quantity could be valuable to all these occupied with the study, improvement, research, trying out and recycling of polyurethane and aggressive materials.

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Sample text

Presented in this section is work using these non-fugitive catalysts in a variety of flexible polyurethane foam applications, including MDI and TDI automotive and flexible slabstock formulations. The results show that these new additives can give dimensional stability and processability to the foam, while providing non-fugitive and non-fogging benefits. Additionally, improvements to the physical properties of the polyurethane article when using the new additives, occurs. Accordingly, these non-fugitive catalysts provide good to excellent foam stabilisation, cell regulation and cell wall drainage and are needed to enable polyurethane manufacturers to maintain their standard production goals.

24 further demonstrate the reduction of FTC values that can be achieved in the back formulations when the new catalyst and experimental silicone surfactant technologies are utilised. At a 90 and 100 second TPR, control formulation V produces good quality foam. When the TPR is increased above 100 seconds foam tightness and surface quality issues arise with the control formulation. Formulations VI, VII and VIII yield good quality foam at all TPR cycle times used in this study. As in the cushion formulation, these lower FTC delta values demonstrate how these newly developed additives enhance crush-out capabilities.

All experiments were duplicated. Each mixed formulation was poured into a ‘chicken’ bucket equipped with a thermocouple positioned at the centre of the bucket resting on a Mettler PM 30,000 balance. The centre height of the rising foam was recorded every second using a DAPS QA Model #2500 rate-of-rise apparatus. Knowing the foam mass, the rate-of-rise and using the ideal gas law, it is possible to calculate the carbon dioxide generated or trapped over time [10, 11]. 4 show height versus time achieved for the cushion and back formulations using the control formulations I and V, as well as the experimental formulations II, III, IV, VI, VII and VIII.

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