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首页> 外文期刊>Journal of Applied Polymer Science >Foam extrusion of high density polyethylene/wood-flour composites using chemical foaming agents
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Foam extrusion of high density polyethylene/wood-flour composites using chemical foaming agents

机译：使用化学发泡剂对高密度聚乙烯/木粉复合材料进行泡沫挤出

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A one-way analysis of variance and thermal analysis were performed in this study to examine the influences of the contents, types (exothermic vs. endothermic), and forms (pure vs. masterbatch) of chemical foaming agents (CFAs), as well as the use of coupling agents, on the density reduction (or void fraction) and cell morphology of extrusion-foamed neat high density polyethylene (HDPE) and HDPE/wood-flour composites. The CFA types and forms did not affect the void fractions of both the neat HDPE and HDPE/wood-flour composites. However, a gas containment limit was observed for neat HDPE foams whereas the average cell size achieved in the HDPE/wood-flour composite foams remained insensitive to the CFA contents, irrespective of the foaming agent types. The experimental results indicated that the use of coupling agent in the formulation was required to achieve HDPE/wood-flour composite foams with high void fraction. (C) 2003 Wiley Periodicals, Inc. [References: 29]
机译：在这项研究中进行了单向方差分析和热分析，以检查化学发泡剂（CFA）的含量，类型（放热与吸热）和形式（纯与母料）的影响，以及偶联剂的使用，对挤出发泡的纯高密度聚乙烯（HDPE）和HDPE /木粉复合材料的密度降低（或空隙率）和细胞形态产生影响。 CFA的类型和形式均不影响纯HDPE和HDPE /木粉复合材料的空隙率。但是，观察到纯HDPE泡沫的气体含量极限，而与发泡剂类型无关，HDPE /木粉复合泡沫中获得的平均泡孔尺寸对CFA含量仍然不敏感。实验结果表明，需要在配方中使用偶联剂来获得具有高空隙率的HDPE /木粉复合泡沫。 （C）2003 Wiley Periodicals，Inc. [参考：29]

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