Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams
Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams
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DOI：
10.1002/app.43881
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发表时间：
2016-09-15
影响因子：
3
通讯作者：
Sailaja, R. R. N.
中科院分区：
文献类型：
--
作者：
Kumar, B. R. Bharath;Zeltmann, Steven Eric;Sailaja, R. R. N.
研究了空心微珠表面处理和共混方法对注射成型高密度聚乙烯（HDPE）基复合泡沫塑料性能的影响。空心微珠用硅烷处理，HDPE用马来酸三丁酯官能化。使用注射成型用20、40和60重量%的空心微珠铸造拉伸试样。模量和强度被发现增加与处理成分的复合材料的空心微珠含量。最高的模量和强度观察到40和60重量%的未处理的机械混合和处理的布拉班德混合空心微珠/HDPE共混物，分别。这些值分别比原始HDPE和官能化HDPE高37和17%。理论模型被用来评估颗粒特性和界面结合对复合泡沫塑料的模量和强度的影响。Brabender混合方法提供了最高的极限拉伸强度和断裂强度，这归因于Brabender在破碎颗粒簇和产生更高的颗粒-基质表面积的有效性相比，通过机械混合方法。理论趋势表明，在强度结果中改善颗粒-基体界面结合具有明显的益处。(C)2016 Wiley Periodicals，Inc.
The influence of cenosphere surface treatment and blending method on the properties of injection molded high-density polyethylene (HDPE) matrix syntactic foams is investigated. Cenospheres are treated with silane and HDPE is functionalized with dibutyl maleate. Tensile test specimens are cast with 20, 40, and 60 wt % of cenospheres using injection molding. Modulus and strength are found to increase with increasing cenosphere content for composites with treated constituents. Highest modulus and strength were observed for 40 and 60 wt % untreated mechanically mixed and treated brabender mixed cenospheres/HDPE blends, respectively. These values are 37 and 17% higher than those for virgin and functionalized HDPE. Theoretical models are used to assess the effect of particle properties and interfacial bonding on modulus and strength of syntactic foams. Brabender mixing method provided highest ultimate tensile and fracture strengths, which is attributed to the effectiveness of Brabender in breaking particle clusters and generating the higher particle-matrix surface area compared to that by mechanical mixing method. Theoretical trends show clear benefits of improved particle-matrix interfacial bonding in the strength results. (C) 2016 Wiley Periodicals, Inc.