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首页> 外文会议>International Congress on Applications of Lasers Electro-Optics >INVESTIGATION INTO TIME DEPENDANT DEGRADATION AND ATMOSPHERIC CONDITIONS ON THE WETTABILITY OF NYLON 6,6 WHICH HAS UNDERGONE CO_2 LASER SURFACE MODIFICATION
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INVESTIGATION INTO TIME DEPENDANT DEGRADATION AND ATMOSPHERIC CONDITIONS ON THE WETTABILITY OF NYLON 6,6 WHICH HAS UNDERGONE CO_2 LASER SURFACE MODIFICATION

机译：对尼龙6,6润湿性的时间依赖性降解和大气条件进行了调查，该尼龙6,6具有CO_2激光表面改性的互补性

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Modification of the wettability of polymers has been demonstrated previously; However, it is known that the wettability modifications of these materials can degrade or vary over time. This can be seen to be crucial from a commercial point of view as this would indicate that a shelf-life has to be established But at the same time, atmospheric parameters may affect the contact angle and must therefore be accounted for as a control variable in any long-term study of wettability. In this study four CO_2 laser patterned nylon 6,6 samples with differing topographical patterns and one as-received sample were analysed over a 30 week period whilst stored in ambient air By obtaining the characteristic contact angle every two weeks it was found that the contact angle varied erratically before ultimately increasing for all samples after the 30 weeks. White light interferometry analysis determined that the laser patterning gave rise to peak heights of up to 3 μm with roughness parameters Ra and Sa of up to 0.305 and 0.408 μm, respectively. X-ray photoelectron spectroscopy found that surface oxygen content increased by up to 7% At It was identified that there was a significant correlation between changes in barometric air pressure and contact angle, highlighting the need for further study to determine if this is a dominant factor.
机译：先前证明了聚合物润湿性的改变;然而，众所周知，这些材料的润湿性改性可以降低或随时间变化。这可以从商业角度来看是至关重要的，因为这表明必须建立保质期，但同时，大气参数可能影响接触角，因此必须被占作为控制变量任何长期研究润湿性。在这项研究中，通过每两周储存在环境空气中，在30周的时间内分析具有不同地形图案的CO_2激光图案化的尼龙6,6样品，同时在环境空气中储存在环境空气中。在30周后最终增加所有样品之前，最不稳定地变化。白色光干涉测量分析确定，激光图案化产生高达3μm的峰值高度，粗糙度参数Ra和高达0.305和0.408μm的SA。 X射线光电子能谱发现，鉴定该表面氧含量增加到7％，鉴定了气压变化与接触角之间存在显着相关性，突出了进一步研究的需要，以确定这是一个主要因素吗？ 。

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