Adhesion and Delamination Failure Mechanisms in Alternating Layered Polyamide and Polyethylene With Compatibilizer
Adhesion and Delamination Failure Mechanisms in Alternating Layered Polyamide and Polyethylene With Compatibilizer
复制标题
具有增容剂的交替层状聚酰胺和聚乙烯的粘合和分层失效机制
DOI：
10.1002/pen.21630
复制
发表时间：
2010-06-01
影响因子：
3.2
通讯作者：
Guo, Shaoyun
中科院分区：
文献类型：
--
作者：
Du, Qin;Jiang, Genjie;Guo, Shaoyun
采用t剥离试验研究了增容剂和层数对高密度聚乙烯（HDPE）和聚酰胺6 （PA6）互挤微层样品界面粘附和分层模型的影响。当在HOPE层中加入更多的马来酸酐接枝HDPE后，双层样品的界面脱层模型由粘接变为内聚破坏。对于高层样品，x射线光电子能谱结果表明，由于微层共挤过程中强大而持久的剪切力，界面处共聚物的面密度随着层数的增加而增加。扫描电镜观察发现，当层数从16层增加到32层时，界面分层模式由单界面分层转变为多界面分层。裂纹扩展包含大量的层间跳跃。发现微层试样的剥离强度受界面剥离机制的影响较大。变异较大。ENG。科学。[j], 2010。(C) 2009年塑料工程师学会
The effects of compatibilizer and the number of layers on the interfacial adhesion and delamination model of coextruded microlayer samples consisting of alternating layers of high-density polyethylene (HDPE) and polyamide 6 (PA6) were studied with T-peel test. When more maleic anhydride-grafted HDPE was incorporated into HOPE layer, the interfacial delamination model changed from adhesive to cohesive failure in the case of bilayer samples. For high-layer samples, the results of X-ray photoelectron spectroscopy showed that the areal density of copolymers at the interfaces increased with increasing number of layers due to strong and durable shearing forces during microlayer coextrusion. Scanning electron microscopy observation revealed that the interfacial delamination model changed from single- to multiple-interface delamination when the number of layers increased from 16 to 32. The crack propagation included a large number of layer-layer jumps. The peel strength of microlayer samples was found to be greatly influenced by the interfacial delamination mechanisms. POLYM. ENG. SCI., 50:1111-1121, 2010. (C) 2009 Society of Plastics Engineers