亚洲精品久久久久国产,熟女视频一区二区在线观看,baoyu永久黄网站

THERMAL STABILITY AND FIRE BEHAVIOR OF POLYURETHANE NANOCOMPOSITE FOAMS: SYNERGISM BETWEEN HALOGEN FREE FLAME RETARDANT AND DIPHOSPHONIUM MODIFIED CLAY

資料類(lèi)型：

PDF文件

關(guān)鍵詞：

資料大小：

381K

所屬學(xué)科：

分子表征

來(lái)源：

2008納米填充阻燃聚合物及復(fù)合材料國(guó)際學(xué)術(shù)研討會(huì)（10.16-10.17，北京）

簡(jiǎn)介：

Synergyinflameretardancyofrigidpolyurethanefoamsbetweenphosphorus-basedflameretardant(aluminiumphosphinate)andlayeredsilicateshasbeeninvestigated.Weusedpristinemontmorilloniteaswellasammoniummodifiedclay(commerciallyavailable)anddiphosphoniummodifiedclay,whichwassynthesisedbytheintercalationofthequaternarydiphosphoniumsalt.ThemorphologyofthefoamswerecharacterisedthroughSEM(ScanningElectronMicroscopy)andX-Raydiffraction(XRD),whilethermalpropertieswerecharacterisedbythermo-gravimetricanalyses(TGA),oxygenindextest(LOI)andconecalorimeter(CC).Themorphologicalcharacterisationshowedthatpristineanddiphosphoniummodifiedclaysarealmostslightlyintercalated,whileammoniummodifiedoneisverywelldispersed.Theresultsofthermalcharacterisationshowedthatinpresenceofphosphinateenhancementsofoxygenindex,firebehaviour(measuredbyconecalorimeter)andthermalstabilityhavebeenachieved.Phosphinateisthereforeanefficientflameretardantforpolyurethanefoamsanditsflameretardancyactiontakesplaceinbothcondensedandgasphases.Pristineandammoniummodifiedlayeredsilicatebringtosomeenhancementsofthermalstabilitywhilehavenoimportanteffectindecreasingpeakheatreleaserate(PHRR)andtotalheatevolved(THE)whenusedinconjunctionwithphosphinate;theirmainadvantageisrelatedtotheenhancementofcompactnessofthecharlayerformed.Diphosphoniumclayisinsteadeffectiveinfurtherimprovingthefirebehaviourofthefoamsbecauseoftheflameretardancyactionofphosphonium:bothPHRRandTHEweredecreased.Theanalysisofconecalorimeterdatashowedthatclaysactthroughphysicaleffectconstitutingabarrieratthesurfacewhichiseffectiveinpreventingorloweringdownthediffusionofvolatilesandoxygen,whilephosphinateandphosphoniumaremoreeffectiveowingtotheircombinedactioninbothcondensedandgasphase.

作者：

M. Modesti, A. Lorenzetti, S. Besco, D. Hrelja, M. Roso

上傳時(shí)間：

2009-02-17 14:13:31

下載次數(shù)：

消耗積分：

立即下載：

好

5人

中

1人

差

1人

友情提示：下載后對(duì)該資源進(jìn)行評(píng)論，即可獎(jiǎng)勵(lì)2分。

報(bào)告錯(cuò)誤：

1.下載無(wú)效　 2. 資料明顯無(wú)價(jià)值　 3. 資料重復(fù)存在

相關(guān)評(píng)論 共有4人發(fā)表評(píng)論

更多評(píng)論

navy608 2010-11-29 14:09:31

好東西，謝謝了

jojoo 2009-10-07 9:23:36

thanks

yehlongy 2009-06-24 10:50:53

好東西謝謝了

gl-xu 2009-03-03 20:13:24

現(xiàn)在已經(jīng)工業(yè)化了嗎

你還沒(méi)有登錄，無(wú)法發(fā)表評(píng)論，請(qǐng)首先

免責(zé)聲明：本站部分資源由網(wǎng)友推薦，來(lái)自互聯(lián)網(wǎng)，版權(quán)屬于原版權(quán)人，如果不慎侵犯到您的權(quán)利，敬請(qǐng)告知，我們會(huì)在第一時(shí)間撤除。本站中各網(wǎng)友的評(píng)論只代表其個(gè)人觀點(diǎn)，不代表本站同意其觀點(diǎn)。

最新上傳資料
·	THE RESEARCH AND DEVELOPM...
·	POSS AS FIRE RETARDANTS
·	COMBUSTION AND CHARRING O...
·	ROLE OF NANOPARTICLES AS ...
·	STUDIES ON FLAME RETARDAN...
·	LAYERED DOUBLE HYDROXIDE ...
·	ASSESSING FIRE BEHAVIOUR ...
·	EFFECTS OF METAL OXIDES I...
·	STRUCTURE OF THE CONDENSE...
·	APPLICATION OF A NUMERICA...
·	CATALYTIC CARBONIZATION F...
·	COMBUSTION AND THERMAL BE...
·	STUDY ON THE FLAMMABILITY...
更多>>

熱點(diǎn)資料
·	A NEW NON-HALOGEN FLAME-R...
·	SELF-ASSEMBLY OF ALIGNED ...
·	COMBUSTION AND CHARRING O...
·	POSS AS FIRE RETARDANTS
·	STUDY ON THE PYROLYSIS ME...
·	AMMONIUM POLYPHOSPHATE/MO...
·	SYNERGISTIC EFFECT OF SEB...
·	A TGA/FTIR STUDY ON THE FL...
·	THERMAL STABILITY AND FIR...
·	EFFECTS OF METAL OXIDES I...
·	MICROENCAPSULATED HALOGEN...
·	THE EFFECT OF OMMT IN INT...
·	THE EFFECTS OF FIRE RETAR...
更多>>

相關(guān)資料
·	丁苯橡膠生膠抗氧效果的熱分析方...
·	填料類(lèi)型對(duì)天然橡膠復(fù)合材料裂紋...
·	離心紡絲制備聚偏氟乙烯納米纖維
·	通過(guò)加入超細(xì)全硫化粉末橡膠大幅...
·	PBS/PLA高阻隔全降解薄膜的結(jié)...
·	通過(guò)隔離結(jié)構(gòu)制備高導(dǎo)熱高分子復(fù)...
·	流動(dòng)誘導(dǎo)結(jié)晶中反常的長(zhǎng)鏈結(jié)構(gòu)依...
更多>>

^{<sub id="gaovl"></sub>}

^{<blockquote id="gaovl"></blockquote>}

私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看