Ultra-high-strength micro-mechanical interlocking by injection molding into laser-structured surfaces
Ultra-high-strength micro-mechanical interlocking by injection molding into laser-structured surfaces
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DOI：
10.1016/j.ijadhadh.2010.03.008
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发表时间：
2010-09-01
影响因子：
3.4
通讯作者：
Balling, Peter
中科院分区：
文献类型：
--
作者：
Byskov-Nielsen, Jeppe;Boll, Jens V.;Balling, Peter
表面结构化提供了通过采用微机械互锁（MMI）产生新的强复合材料的能力。复合材料的当前技术水平通常基于先进的化学键合沿着简单的表面粗糙化，而对专门设计的表面形貌的使用考虑得少得多。然而，基于粘合剂的技术可能不能提供表现出足够高的机械强度以及对温度变化的高耐受性的粘结，这对于许多工业相关情况是必要的。在本文中，最近的结果，从优化材料互锁性能的激光为基础的表面微结构的报告。基于激光的结构化在界面的几何形状方面提供了很大的灵活性，并且通过将塑料直接注射成型到激光结构化的表面中来确保高强度。接头的机械强度对精确的激光产生的表面形貌的依赖性进行了研究。结果表明，适当的表面结构可以增加几个数量级的粘结强度，产生非常高的机械稳定性联锁。(C)2010爱思唯尔有限公司版权所有。
Surface structuring provides the ability to generate new strong composite materials by employing micro-mechanical interlocking (MMI). The present state-of-the-art in composite materials is often based on advanced chemical bonding along with simple roughening of the surface, while the use of a specifically designed surface topography has been given much less consideration. The adhesive-based techniques may, however, not provide bonding that exhibits sufficiently high mechanical strength as well as a high tolerance to temperature changes that is essential for many industrially relevant situations. In the present paper, recent results from the optimization of material interlocking properties by laser-based surface microstructuring are reported. The laser-based structuring provides much flexibility in the geometry of the interface, and a high strength is ensured by directly injection molding a plastic into the laser-structured surface. The dependence of the mechanical strength of the joint on the exact laser generated surface morphology is investigated. It is shown that appropriate surface structuring can increase the bonding strength by several orders of magnitude, yielding interlocking of very high mechanical stability. (C) 2010 Elsevier Ltd. All rights reserved.