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

By Kurt C. Frisch, Daniel Klempner

Leading edge advancements in polyurethane chemistry, houses, approaches and purposes issues contain polyurethane foams, elastomers, structural adhesives and extra the most recent quantity in a well-liked sequence for the expert the most recent quantity within the Advances in Urethane technology and expertise sequence, this e-book provides striking technical reviews on present advancements within the box. quantity 14 offers innovative info in urethane chemistry, formulations, homes advancements and fabrics. The authors are globally famous leaders within the region of polymer learn and improvement.

In addition to in-depth insurance of developments in polyurethane know-how, this quantity is seriously illustrated with over ninety graphs, forty six tables and eighty five schematics. The illustrations strengthen the various subject matters coated.

This new quantity might be necessary to all these occupied with the study, improvement, research, checking out and recycling of polyurethane and aggressive materials.

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Extra resources for Advances in Urethane Science and Technology

Sample text

Collapsed foam was encountered at TPR times of 70 seconds for all formulations. FTC values for the back control formulation V had an initial FTC value of 138 N/323 cm2 at a 90 TPR and 160 N/323 cm2 at a 100 second TPR time. Formulations VI, VII and VIII produced a maximum initial FTC value at a 90 and 100 second TPR of 138 N/323 cm2. Control formulation V and experimental formulations VI, VII and VIII provided acceptable FTC values at 90 and 100 second TPR times (Figures 18 and 19). No significant difference in FTC was realised with these formulations at these TPR times.

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. The foam height versus time graphs clearly indicate higher rates for control formulations I and V in both cushion and back formulations. 4 Foam Height versus Time - Back Formulation formulations, which contained the new additives in formulations II, III, IV, VI, VII and VIII did not achieve the same foam height when compared to the control formulations.

SSF I II III BL53/ Exp. 8 160 1. 8 44 0. 1 182 5. 7 Physical properties at 90 TPR: back formulation Physical Properties Control BL53 Exp. SSF V VI VII BL53/ Exp. 5 SD: Standard Deviation ILD: indentation load deflection SLM: standard litres per minute X-N1586/X-N1587 in combination (formulations IV and VIII). Furthermore, Japanese wet set values [6] can be improved by 5 to 8% with the Dabco BL-53, and experimental silicone surfactants X-N1586 and X-N1587. Wet set values are improved nearly 20% when the two additives are utilised in combination as evidenced by Formulations IV and VIII.

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