• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Effect of adhesive thickness on the stringiness of crosslinked polyacrylic pressure-sensitive adhesives
【24h】

Effect of adhesive thickness on the stringiness of crosslinked polyacrylic pressure-sensitive adhesives

机译：胶粘剂厚度对交联聚丙烯酸压敏胶粘剂拉丝度的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of adhesive thickness on stringiness behavior during 90 degrees peel testing was investigated for crosslinked poly(n-butyl acrylate-acrylic acid) (A) and poly(2-ethylhexyl acrylate-acrylic acid) (B) with a constant crosslinker content. The adhesive thickness was varied over the range from 15 to 60 m. All adhesive thicknesses exhibited sawtooth-type peeling with a front frame for B, but only the 30-m thickness generated a front frame-type for A. The peel rate decreased from 15 to 45 m and plateaued above 45 m under a constant load test. These results indicate that the adhesion strength increases with adhesive thickness, but reaches a constant value at high thicknesses. The stringiness was also analysed for B and the sawtooth interval observed to increase with increasing thickness. This means the sawtooth number decreased. As a result, the concentrated stress per sawtooth induces easier peeling and so this factor tend to increase the peel rate. Conversely, the stringiness width increased with increasing thickness. The stress load over the stringiness region decreased with an increase in thickness, meaning that a decrease in the concentrated stress decreases the peel rate. The actual peel rate is influenced by the contributions of these two factors. The strain rates during constant peel rate tests decreased slightly with increasing thickness, due to a reduction in the apparent modulus. The molecular mobilities near the adherend and the backing surfaces were evidently restrained by these surfaces, and the relative rates of motion of such restrained molecules decrease with increased thickness. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42210.
机译：对于交联剂含量恒定的交联聚（丙烯酸正丁酯-丙烯酸）（A）和聚（丙烯酸2-乙基己酯-丙烯酸）（B），研究了粘合剂厚度对90度剥离测试期间的拉丝行为的影响。粘合剂厚度在15至60 m的范围内变化。 B的所有胶粘剂厚度均表现出锯齿型剥离，但对于A而言，只有30-m的厚度产生了A的前胶结型。在恒定负载测试下，剥离速率从15降至45 m，并稳定在45 m以上。这些结果表明，粘合强度随粘合剂厚度而增加，但在高厚度下达到恒定值。还分析了B的拉丝度，观察到的锯齿间隔随着厚度的增加而增加。这意味着锯齿数减少了。结果，每个锯齿的集中应力导致更容易剥落，因此该因素倾向于增加剥落速度。相反，拉丝宽度随着厚度的增加而增加。随着厚度的增加，拉丝区域上的应力负荷降低，这意味着集中应力的降低会降低剥离速率。实际剥离速度受这两个因素的影响。恒定剥离速率测试期间的应变速率随厚度的增加而略有降低，这是由于表观模量的降低所致。这些表面明显限制了被粘物和衬背表面附近的分子迁移，并且这种受限制的分子的相对运动速率随厚度的增加而降低。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42210。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号