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Tuesday, July 21, 2020 | History

3 edition of A new readily processable polyimide found in the catalog.

A new readily processable polyimide

A new readily processable polyimide

  • 285 Want to read
  • 34 Currently reading

Published by National Aeronautics and Space Administration in [Washington, DC? .
Written in English

    Subjects:
  • Polyimides.

  • Edition Notes

    StatementF.W. Harris, M.W. Beltz, and P.M. Hergenrother.
    SeriesNASA-TM -- 89253., NASA technical memorandum -- 89253.
    ContributionsBeltz, N. W., Hergenrother, P. M., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL14662650M

      Comment: UNused book w/ minor ding/s. Click “Read More” for condition details, which is that this book is from a bookstore that didn’t sell it. That is, this is a brand new book that has never been sold, read or used, but note: it does have some small, but noticeable cosmetic damage, like a cover crease or mark on the cover, or a damaged dust jacket or bent pages. Progress in Polyimide Chemistry I Author: H. R. Kricheldorf Published by Springer Berlin Heidelberg ISBN: DOI: /X Table of Contents: Rapid Synthesis of Polyimides from Nylon-Salt-Type Monomers Processable Aromatic Polyimides Synthesis and Characterization of Segmented Polyimide-Polyorganosiloxane Copolymers.

      4,4′-[Oxybis(4,1-phenylenethio)]dianiline-based novel polyimides were synthesized from various dianhydrides. Most of the polymers were easily soluble in aprotic polar solvents and in. applications. Two different types of polymers, a polyurethane and a polyimide will be discussed regarding the synthesis, properties, processing and applications. Discussed will be specific target end uses and the potential benefits of the novel polymers developed in this study.

    Tailoring their properties is readily achievable by varying one or more of these components. V ARTM Processable " has concentrated on developing new polyimide resin systems for advanced. working on this book, I learned about another book in the making on a related topic: J. D. Brown's () "Using Surveys in Language Programs. " As it happened, the two books are largely complemen-tary, with few overlaps. I was fortunate to have JD's manuscript in my hands when preparing the final draft of this book (thanks once.


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A new readily processable polyimide Download PDF EPUB FB2

@article{osti_, title = {New readily processable polyimide}, author = {Harris, F.W. and Beltz, M.W. and Hergenrother, P.M.}, abstractNote = {As part of an effort to develop tough solvent resistance thermoplastics for potential use as structural resins on aerospace vehicles, a new processable polyimide was evaluated.

The synthesis involved the reaction of a new diamine, 1,3-bis 2-(3. Get this from a library. A new readily processable polyimide. [Frank Wayne Harris; N W Beltz; P M Hergenrother; United States.

National Aeronautics and Space Administration.]. A new readily processable polyimide. By P. Hergenrother, M. Beltz and F. Harris. Abstract. As part of an effort to develop tough solvent resistance thermoplastics for potential use as structural resins on aerospace vehicles, a new processable polyimide was evaluated.

The synthesis involved the reaction of a new diamine, 1,3-bis 2-(3. Synthesis and Characterization of a Melt Processable Polyimide. Pages Burks, H. (et al.) Preview Buy Chap95 € New Processable Polyimide Based Adhesives.

Pages *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis. ebook access is temporary and does not include. A new readily processable polyimide. By F. A new readily processable polyimide book, P. Hergenrother and M.

Beltz. Abstract. As part of an effort to develop tough solvent resistance thermoplastics for potential use as structural resins on aerospace vehicles, a new processable polyimide was evaluated.

The synthesis involved the reaction of a new diamine, 1,3-bis 2-(3. The development of a broad line of °–°C service adhesives which are easily processed is described. The first generation film adhesives, EA and EA typically perform best up to about. A new hydroxyl-containing fluorene-based polyimide FOH-6FPI hybrid with different TiO2 contents was prepared and used for memory device applications.

The resulting films exhibited tunable memory properties from DRAM, SRAM, to WROM at different TiO2 concentrations from 0 wt% to 50 wt% with a high ON/OFF curre. Abstract. This review article deals with aromatic polyimides that are processable from the melt or soluble in organic solvents.

Conventional aromatic polyimides represent the most important family of heat resistant polymers, but they cannot be processed in the melt, and their application in the state of soluble intermediates always involves a hazardous step of cyclo-dehydration and elimination.

Investigation of readily processable thermoplastic‐toughened thermosets. BMIs toughened via a reactive solvent approach. Modification of bisphenol-A based bismaleimide resin (BPA-BMI) with an allyl-terminated hyperbranched polyimide (AT-PAEKI), Polymer, /r, Create a new account.

Email or Customer ID. Towards solution-processable, thermally robust, transparent polyimide-chain-end tethered organosilicate nanohybrids Author links open overlay panel Ki-Ho Nam a 1 Jeong-un Jin a b 1 Dong Hoon Lee b 1 Haksoo Han c Munju Goh a Jaesang Yu a Bon-Cheol Ku a Nam-Ho You a.

There is a growing demand for the processable and solvent resistant polyimide resins that can withstand high temperatures, perhaps in excess of °C for extended periods of time. A promising approach to overcome these problems is the use of a crosslinkable site that reacts, on thermal cure during or after the processing, to form insoluble.

These market requirements prompted the development of Extem resin, a new amorphous, melt-processable thermoplastic polyimide (TPI). Introduced by GE Plastics this past November, Extem resin is an offshoot of GE's year experience in making Ultem polyetherimide resin.

This paper reviews the development of new high-temperature polymeric materials applicable to plastic substrates in image display devices with a focus on our previous results.

Novel solution-processable colorless polyimides (PIs) with ultra-low linear coefficients of thermal expansion (CTE) are proposed in this paper. First, the principles of the coloration of PI films are briefly discussed.

We design a novel solution-processable polyimide ZnPor-t-DSDA with porphyrin moiety (electron donor) and sulfone-containing phthalimide (electron acceptor) for polymer memory applications.

The resulting memory device can be switched from low-conductivity (OFF) to high-conductivity (ON) by both positive and negative sweeps, exhibiting symmetry biswitching characteristic with a short retention. @article{osti_, title = {Processable aromatic polyimides}, author = {Burks, H D and Clair, T L}, abstractNote = {Two similar polyimide systems were synthesized and characterized.

The only structural difference was a sulfide linkage in the anhydride-derived portion of. To be useful for microelectronic applications, however, these materials must also be good insulators, as well as be readily processable. The incorporation of flexible polysiloxane segments into the polyimide backbone structure has been shown to yield soluble, processable copolyimides with good thermal and mechanical properties.

One of the most common methods of data collection in second lan­ guage (L2) research is to use questionnaires of various kinds. The popularity of questionnaires is due to the fact that they are easy to construct, extremely versatile, and uniquely capable of gathering a large amount of information quickly in a form that is readily processable.

mainly followed in-house in the synthesis of soluble, readily processable polyimides [1,23,24]. The PAA route is the most used technique to produce commercial PI films. Usually, the PAA precursor is stable and displays a long shelf life, which makes it easy to handle, deposit, transport, or shape it into films, coatings, or fibers.

The approaches to overcome this disadvantages are: To make polyimide soluble. To increase thermoplasticity of melt making PI processable.

The current example of a thermoplastic polyimide being ULTEM which is a polyetherimide and NASAs LARC A solution-processable functional polyimide (PYTPA-PI), containing triphenylamine-substituted diphenylpyridine moieties (PYTPA, electron donors) and phthalimide moieties (PI, electron acceptors), was synthesized.

The copolymer exhibits a high glass transition temperature of °C. A switching device, based on a solution-cast thin film of PYTPA-PI sandwiched between an indium-tin oxide (ITO.

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.CHAPTER 1 4 cyclized into the final polyimide.

This process involving a soluble polymer precursor was pioneered by workers at Dupont1 in ’s, and to this day, continues to be the primary route by which most polyimides are made.A processable polyimide having azo-chromophore functionalized with cyanosulfonyl group (PI-SOT) was prepared for the nonlinear optics applications.

They are readily soluble in aprotic polar.