High molecular weight first generation PMR polyimides for 343 C applications

High molecular weight first generation PMR polyimides for 343 C applications

The effect of molecular weight on 343 C thermo-oxidative stability (TOS), mechanical properties, and processability, of the first generation PMR polyimides was studied. Graphite fiber reinforced PMR-15, PMR-30, PMR-50, and PMR-75 composites (corresponding to formulated molecular weights of 1500, 300...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Malarik, Diane C., Vannucci, Raymond D.
Format: Report
Sprache:eng
Schlagworte:
Nonmetallic Materials
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator Malarik, Diane C.
Vannucci, Raymond D.
description The effect of molecular weight on 343 C thermo-oxidative stability (TOS), mechanical properties, and processability, of the first generation PMR polyimides was studied. Graphite fiber reinforced PMR-15, PMR-30, PMR-50, and PMR-75 composites (corresponding to formulated molecular weights of 1500, 3000, 5000, and 7500, respectively) were fabricated using a simulated autoclave process. The data reveals that while alternate autoclave cure schedules are required for the high molecular weight resins, low void laminates can be fabricated which have significantly improved TOS over PMR-15, with only a small sacrifice in mechanical properties.
format Report
fullrecord <record><control><sourceid>nasa_CYI</sourceid><recordid>TN_cdi_nasa_ntrs_19920010256</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>19920010256</sourcerecordid><originalsourceid>FETCH-nasa_ntrs_199200102563</originalsourceid><addsrcrecordid>eNrjZPDxyEzPUMjNz0lNLs1JLFIoTwXySxTSMouKSxTSU_NSixJLMvPzFAJ8gxQK8nMqM3MzU1KLFdLyixSMTYwVnBUSCwpyMpPBiop5GFjTEnOKU3mhNDeDjJtriLOHbl5icWJ8XklRcbyhpaWRgYGhgZGpmTEBaQAQJjDg</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>report</recordtype></control><display><type>report</type><title>High molecular weight first generation PMR polyimides for 343 C applications</title><source>NASA Technical Reports Server</source><creator>Malarik, Diane C. ; Vannucci, Raymond D.</creator><creatorcontrib>Malarik, Diane C. ; Vannucci, Raymond D.</creatorcontrib><description>The effect of molecular weight on 343 C thermo-oxidative stability (TOS), mechanical properties, and processability, of the first generation PMR polyimides was studied. Graphite fiber reinforced PMR-15, PMR-30, PMR-50, and PMR-75 composites (corresponding to formulated molecular weights of 1500, 3000, 5000, and 7500, respectively) were fabricated using a simulated autoclave process. The data reveals that while alternate autoclave cure schedules are required for the high molecular weight resins, low void laminates can be fabricated which have significantly improved TOS over PMR-15, with only a small sacrifice in mechanical properties.</description><language>eng</language><publisher>Legacy CDMS</publisher><subject>Nonmetallic Materials</subject><creationdate>1991</creationdate><rights>Copyright Determination: GOV_PUBLIC_USE_PERMITTED</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>780,800</link.rule.ids><linktorsrc>$$Uhttps://ntrs.nasa.gov/citations/19920010256$$EView_record_in_NASA$$FView_record_in_$$GNASA$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Malarik, Diane C.</creatorcontrib><creatorcontrib>Vannucci, Raymond D.</creatorcontrib><title>High molecular weight first generation PMR polyimides for 343 C applications</title><description>The effect of molecular weight on 343 C thermo-oxidative stability (TOS), mechanical properties, and processability, of the first generation PMR polyimides was studied. Graphite fiber reinforced PMR-15, PMR-30, PMR-50, and PMR-75 composites (corresponding to formulated molecular weights of 1500, 3000, 5000, and 7500, respectively) were fabricated using a simulated autoclave process. The data reveals that while alternate autoclave cure schedules are required for the high molecular weight resins, low void laminates can be fabricated which have significantly improved TOS over PMR-15, with only a small sacrifice in mechanical properties.</description><subject>Nonmetallic Materials</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1991</creationdate><recordtype>report</recordtype><sourceid>CYI</sourceid><recordid>eNrjZPDxyEzPUMjNz0lNLs1JLFIoTwXySxTSMouKSxTSU_NSixJLMvPzFAJ8gxQK8nMqM3MzU1KLFdLyixSMTYwVnBUSCwpyMpPBiop5GFjTEnOKU3mhNDeDjJtriLOHbl5icWJ8XklRcbyhpaWRgYGhgZGpmTEBaQAQJjDg</recordid><startdate>19911201</startdate><enddate>19911201</enddate><creator>Malarik, Diane C.</creator><creator>Vannucci, Raymond D.</creator><scope>CYE</scope><scope>CYI</scope></search><sort><creationdate>19911201</creationdate><title>High molecular weight first generation PMR polyimides for 343 C applications</title><author>Malarik, Diane C. ; Vannucci, Raymond D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-nasa_ntrs_199200102563</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Nonmetallic Materials</topic><toplevel>online_resources</toplevel><creatorcontrib>Malarik, Diane C.</creatorcontrib><creatorcontrib>Vannucci, Raymond D.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Malarik, Diane C.</au><au>Vannucci, Raymond D.</au><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>High molecular weight first generation PMR polyimides for 343 C applications</btitle><date>1991-12-01</date><risdate>1991</risdate><abstract>The effect of molecular weight on 343 C thermo-oxidative stability (TOS), mechanical properties, and processability, of the first generation PMR polyimides was studied. Graphite fiber reinforced PMR-15, PMR-30, PMR-50, and PMR-75 composites (corresponding to formulated molecular weights of 1500, 3000, 5000, and 7500, respectively) were fabricated using a simulated autoclave process. The data reveals that while alternate autoclave cure schedules are required for the high molecular weight resins, low void laminates can be fabricated which have significantly improved TOS over PMR-15, with only a small sacrifice in mechanical properties.</abstract><cop>Legacy CDMS</cop><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_nasa_ntrs_19920010256
source NASA Technical Reports Server
subjects Nonmetallic Materials
title High molecular weight first generation PMR polyimides for 343 C applications
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-19T13%3A00%3A47IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-nasa_CYI&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=unknown&rft.btitle=High%20molecular%20weight%20first%20generation%20PMR%20polyimides%20for%20343%20C%20applications&rft.au=Malarik,%20Diane%20C.&rft.date=1991-12-01&rft_id=info:doi/&rft_dat=%3Cnasa_CYI%3E19920010256%3C/nasa_CYI%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true