Kishan C. Khemani (Eds.)'s Polymeric Foams. Science and Technology PDF

By Kishan C. Khemani (Eds.)

content material: Polymeric foams : an outline / Kishan C. Khemani --
Siloxane elastomer foams / A. Della Martina ... [et al.] --
Carbon foams ready from hyper-cross-linked polymer foams / Warren P. Steckle, Jr. --
guidance of thermostable inflexible foams through keep watch over of the opposite Diels-Alder response throughout the cross-linking of bis-nadimide oligomers / L. Dutruch ... [et al.] --
Extruded polyester foams / Kishan C. Khemani --
Polyisocyanurate foams changed by means of thermally good linkages / ok. Ashida ... [et al.] --
Microcellular foams / Vipin Kumar and John E. Weller --
a technique for the suppression of mobile coalescence within the extrusion of microcellular high-impact polystyrene foams / Chul B. Park, Amir H. Behravesh, and Ronald D. Venter --
influence of silicone surfactant on ventilation of versatile polyurethane foams / Xiaodong D. Zhang, Christopher W. Macosko, and H.T. Davis --
Polymer constitution improvement in the course of reactive processing : in situ experiences of a mobile, multiphase block copolymer / Michael J. Elwell ... [et al.] --
Imaging open-cell polyurethane foam through confocal microscopy / Rida Hamza ... [et al.] --
A standpoint on phone morphology and foam homes / M.B. Rhodes --
A basic examine of thermoplastic foam extrusion with actual blowing brokers / Shau-Tarng Lee --
Bubble development dynamics in olefinic foams / N.S. Ramesh and Nelson Malwitz --
actual modeling of intumescent hearth retardant polymers / Kathryn M. Butler.

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Extra resources for Polymeric Foams. Science and Technology

Example text

The following sample designation was used: carbXXYYY/ZZZ. Where carb denotes that the sample was pyrolyzed, X X denotes the precursor foam, Y Y Y is the initial pyrolysis temperature , and ZZZ is the second pyrolysis temperature where two step pyrolysis was employed. Although many different hypercrosslinked samples have been previously prepared, the following(XX) were chosen for this study: benz benzene, BP - biphenyl, TP - m-terphenyl, and PS - polystyrene. A crosslinking ratio of 1:2 (PAH:XL) was chosen.

J. , 1974, 49, 462. 46. H. Carbon, 1970, 8, 761. 47. ; Kawamura, K. In Polymeric Carbons, 1976, Cambridge Univ. Press, Cambridge. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1997. Chapter 4 Preparation of Thermostable Rigid Foams by Control of the Reverse Diels-Alder Reaction During the Cross-Linking of Bis-nadimide Oligomers 1 2 1 1 1,3 L. Senneron ,M . Bartholin , P. Mison , and B. org A new chemical approach using the polymerization of nadimide end-capped oligobenzhycholimide (BBN) was found to produce rigid thermostable foams.

Much below this temperature there is an incomplete pyrolysis of the sample, even at longer soak times up to 24 hours. Although some Ambersorb resins are partially pyrolyzed (28), this avenue was not pursued. Incomplete pyrolysis was confirmed by both Fourier Transform Infrared (FTIR) analysis and N M R studies. The atmosphere under which the pyrolysis was conducted was found to have a profound effect upon the properties of the resulting foam. The BET surface areas shown in Table I were at least an order of magnitude lower for all those samples that were pyrolyzed in either vacuum or nitrogen than those pyrolyzed in static air.

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