3 edition of Condensation polyimides found in the catalog.
by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, D.C.?, Springfield, Va
Written in English
|Series||NASA-TM -- 103467., NASA technical memorandum -- 103467.|
|Contributions||United States. National Aeronautics and Space Administration.|
|The Physical Object|
|Pagination||24,  leaves|
|Number of Pages||24|
Polyimides, A New Class of Heat-Resistant Polymers by Adrova, N.A., Bessonov, M.I., Laius, L.A. & Rudakov, A.P. and a great selection of related books, art and. The present book enlightens the processing of industrial polymers, additives, colourant and fillers. This book is an invaluable resource to new entrepreneurs, technocrats, researchers, professionals etc. NIIR Project Consultancy Services (NPCS) 1/
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The kinetics of the heat producing processes in undischarged and partially discharged cells under open‐ and closed‐circuit conditions have been measured by heat conduction microcalorimetry. The cells studied, Honeywell Type G reserve cells, were activated as needed, and the rates of open‐ and closed‐circuit heat output were determined as a function of time since activation. Due to the technical work on the site downloading books (as well as file conversion and sending books to email/kindle) may be unstable from May, 27 to May, 28 Also, for users who have an active donation now, we will extend the donation period. Chapter 8 Polyimides: Synthesis Properties, Characterization and Applications (pages –
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This article discusses the properties and applications of the two types of polyimide resins such as condensation polyimides and addition-type polyimides. It describes the chemistry of condensation-type polyimides during synthesis, processing of polyamide acid precursor solution to polyimide, and preparation of polyimide films from thermoplastic polyamic acid precursors.
Condensation polyimides: Synthesis, solution behavior, and imidization characteristics. Pages Volksen, W. Preview Buy Chap95 € Addition polyimides. Pages Stenzenberger, H.
Book Title High Performance Polymers Editors. Paul M. Hergenrother; Series Title Advances in Polymer Science Series Volume In addition, developments also continue with condensation polymers with several new polyester type materials of interest for bottle-blowing and/or degradable plastics.
New phenolic-type resins have also been announced. As with previous editions, an explanation of the properties of these new materials in terms of their structure and morphology 5/5(1). Polyimides, in particular those derived from fully aromatic monomers, represent the most important class of high temperature polymers.
In part, this is a direct result of their excellent combination Cited by: Starting from α-tetralone and maleic anhydride, novel AB-type amino anhydrides 3 and 5 were synthesized in good yields and obtained in high purity without self-condensation.
The tetrahydrohelicene monomer 3 could be readily polymerized in m-cresol to give polyimide 8 with high molecular weight. Although direct polymerization of the helicene monomer 5 afforded only an Cited by: n. A polymer formed by the condensation of an organic anhydride or dianhydride with a diamine, in some cases followed by thermal dehydration (curing).
The early polyimides from pyromellitic anhydride and aromatic diamines, when fully cured, Condensation polyimides book extremely high thermal stability but were unmeltable and required special processing.
The 3F condensation polyimides: Review and update. By Roy F. Gratz and William B. Alston. Abstract. Nine new condensation polyimides containing the phenyltrifluoroethylidene (3F) linkage were synthesized by the amic-acid route.
Several other polyimides, including some with hexafluoroisopropylidene (6F) linkage, were also prepared as : Roy F. Gratz and William B. Alston. A relatively compact, but nonetheless comprehensive, review of the most important preparative methods for the synthesis and chemical modification of polymers.
The contents are subdivided according 5/5(2). Synthesis and characterization of novel polyimides containing fluorine and phosphine oxide moieties.
Polymer42 (14), DOI: /S(01)X. Masatoshi Hasegawa. Semi-Aromatic Polyimides with Low Dielectric Constant and Low by: Polyimides from Condensation Reactions The most important polyimides of this first group are based on the monomer pyromellitic dianhydride (PMDA) (V).
This monomer is manufactured by Du Pont Company and obtained by the vapor-phase oxidation of durene (1,2,4,5-tetramethylbenzene), using a supported vanadium oxide by: 9.
Polyimides can also produce thermoset structures, Skybond is an example of a condensation curing thermoset material. Polyimides are much more difficult to process than epoxies or bismaleimides. They require high processing temperatures (e.g., – °F).
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Two series of polyamides and polyimides containing bulky trityl-substituted triphenylamine units were synthesized from condensation reactions of 4,4′-diamino-4′′-trityltriphenylamine with various dicarboxylic acids and tetracarboxylic dianhydrides, respectively.
The polymers showed good solubility and film-forming ability. Flexible or robust films could be readily obtained via solution Cited by: Heat Resistant Polymers. all completel y described in books and review papers. divided into two classes which are condensation polyimides and addition pol yimides (2, ).
Other articles where Condensation polyimide is discussed: major industrial polymers: Polyimides: two categories of these polymers, condensation and addition. The former are made by step-growth polymerization and are linear in structure; the latter are synthesized by heat-activated addition polymerization of diimides and have a network structure.
Preparation of a polyimide foam. reports with the more recent literature data concerning the synthetic aspects of condensation polyimides, their solution behavior, and imidization. Polyimides. Segmented and Block Copolymers from Step Condensation Methods: 7: Crosslinking and Branching.
Network Formation and Gelation. Carothers Equation: Pn Approach: 8: Network Formation. Statistical Approach: Pw Approach.
A Word on MWD for Nonlinear Polymerizations: 9: Step-by-Step Approaches I: Polypeptide Synthesis: Examples from Biology. Microform, Book, Author: Alston, William B: Description Thermo-oxidatively stable condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane dianhyd Structure-to-glass transition temperature relationships in high temperature stable condensation polyimid.
Polyimide is a polymer of imide monomers. Polyimides have been in mass production since With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, e.g.
high temperature fuel cells, displays, and various military roles. A classic polyimide is Kapton, which is produced by condensation of pyromellitic dianhydride and 4,4'-oxydianiline. An introduction to polyamides - including nylon and Kevlar. The other monomer is a 6 carbon chain with an amino group, -NH 2, at each is 1,6-diaminohexane (also known as hexane-1,6-diamine).
Get this from a library! New condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane structures. [Lewis Research Center.;].Functional Condensation Polymers fulfills the need to explore these polymers which form an increasingly important and diverse foundation in the search for new materials in the twentyfirst century.
Some of the advantages condensation polymers hold over vinyl polymers include offering different kinds of binding sites, their ability to be made.N,N′-Bis(4-diphenylaminophenyl)pyromellitimide (TPA-PMDI) was synthesized from the condensation reaction of 4-aminotriphenylamine with pyromellitic dianhydride (PMDA).The triphenylamine-diimide TPA-PMDI could be electrochemically polymerized into ambipolar, redox-active polyimide films on the electrode surface in an electrolyte solution via the coupling reactions between triphenylamine.