【摘要】：通過熔融共混法制備出膨脹阻燃長(zhǎng)玻纖增強(qiáng)聚丙烯(LGFPP/IFR)復(fù)合材料,利用極限氧指數(shù)(LOI)測(cè)試、垂直燃燒測(cè)試、錐形量熱分析等表征手段研究了戶外自然條件下,不同自然老化時(shí)間對(duì)LGFPP/IFR復(fù)合材料燃燒性能的影響。結(jié)果顯示,在LGFPP/IFR復(fù)合材料的自然老化過程中,PP基體及IFR會(huì)發(fā)生降解,導(dǎo)致長(zhǎng)時(shí)間老化后試樣的燃燒性能下降,但在老化初期阻燃劑的遷移效應(yīng)依然占主導(dǎo)地位。當(dāng)老化時(shí)間為6個(gè)月時(shí),試樣的LOI達(dá)到最大值,為28.2%,其熱釋放速率峰值、總熱釋放量以及生煙速率均為最小值,表明復(fù)合體系的阻燃性能有所提高。掃描電子顯微鏡測(cè)試結(jié)果表明,試樣燃燒后形成炭層的致密性是影響復(fù)合體系燃燒性能的關(guān)鍵因素。
[Abstract]:Intumescent flame retardant long glass fiber reinforced polypropylene (LGFPP/IFR) composites were prepared by melt blending method. The outdoor natural conditions were studied by means of limiting oxygen index (LOI), vertical combustion and cone calorimetry. Effects of different natural aging time on the combustion properties of LGFPP/IFR composites. The results show that the degradation of PP matrix and IFR during natural aging of LGFPP/IFR composites leads to the degradation of the combustion properties of the composites after long aging, but the migration effect of flame retardants still dominates in the early aging period. When the aging time is 6 months, the LOI of the sample reaches the maximum value, which is 28.2.The peak value of heat release rate, total heat release and smoke generation rate are the minimum, which indicates that the flame retardant property of the composite system has been improved. The results of scanning electron microscopy (SEM) show that the compactness of the carbon layer formed after combustion is the key factor affecting the combustion performance of the composite system.
【作者單位】： 貴州大學(xué)材料與冶金學(xué)院;國(guó)家復(fù)合改性聚合物材料工程技術(shù)研究中心;
【基金】：貴州省高層次創(chuàng)新型人才培養(yǎng)項(xiàng)目(黔科合人才[2015]4039號(hào)) 貴州省優(yōu)秀青年科技人才培養(yǎng)對(duì)象項(xiàng)目(黔科合人字[2015]26號(hào)) 貴州省科技計(jì)劃項(xiàng)目(黔科合重大專項(xiàng)字[2015]6005號(hào),黔科合成果[2016]4524號(hào))
【分類號(hào)】：TB332

【相似文獻(xiàn)】

相關(guān)期刊論文 前5條

1 王偉宏;王清文;張征明;;稻殼/聚乙烯復(fù)合材的自然老化與紫外光加速老化[J];林業(yè)科學(xué);2008年08期

2 Matt McGreer;氣候及老化之因素[J];環(huán)境技術(shù);2001年06期

3 王偉宏;卜凡華;張征明;隋淑娟;五清文;;稻殼-聚乙烯復(fù)合材料經(jīng)歷自然老化后的性能變化(英文)[J];Journal of Forestry Research;2010年02期

4 李新功;鄭霞;吳義強(qiáng);陳衛(wèi)民;凌啟飛;;竹纖維/聚乳酸復(fù)合材料自然老化性能研究[J];功能材料;2013年11期

5 ;[J];;年期

相關(guān)會(huì)議論文 前2條

1 許鳳和;李曉駿;陳新文;;復(fù)合材料自然老化與使用老化之間的關(guān)系[A];復(fù)合材料的現(xiàn)狀與發(fā)展——第十一屆全國(guó)復(fù)合材料學(xué)術(shù)會(huì)議論文集[C];2000年

2 秦?zé)?石光;林少全;周杰;;自然老化竹粉/回收聚乙烯復(fù)合材料吸水性研究[A];2009年全國(guó)高分子學(xué)術(shù)論文報(bào)告會(huì)論文摘要集（下冊(cè)）[C];2009年

，

本文編號(hào)：2219044