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首页> 外文期刊>Journal of Applied Polymer Science >Inner relationship between the damping property and the sand-fixing durability of polymer materials
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Inner relationship between the damping property and the sand-fixing durability of polymer materials

机译：阻尼性能与聚合物材料的砂固定耐久性的内在关系

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This article for the first time reveals the impact of the damping property of materials on its sand-fixing durability. Based on the turbulence of wind, it could be regarded as a kind of periodic mechanical force. So, when polymers are used to fix sand, they would constantly perceive a periodic force of wind. And, this force would give rise to yielding fracture and fatigue of polymer, so that the sand-fixing durability of material could be weakened significantly. To impair the periodic force of wind and extend the durability of sand-fixation polymer materials, we, for the first time, introduce the designing principle of macromolecular damping material, that can transform external mechanical force into own thermal energy, into the preparation of sand-fixing materials. In this work, poly(vinyl acetate) (PVAc) emulsions with different dangling chain have been synthesized successfully in order to improve their damping properties. The effects of the prepared PVAc with gradually growing dangling chain length have been investigated on their damping properties, on the sand stabilization strengths and sand-fixing durability. And the relationship between the damping property and the sand-fixing property of PVAc was built by simulating wind tunnel test. The experimental results show that, introducing the dangling chain could significantly improve the damping temperature range and extend the anti-wind erosion time of PVAc. It has to be noticed that, introducing the dangling chain, will provide a double effects for the sand stabilization strength of materials, i.e., it can improve both the flexibility of the side-chain and the internal friction of the molecular chains. Wind tunnel test verified that introducing the dangling chain can raise the damping performance of material and convert more periodic force of wind into the friction heat of molecular chain, and thus impair the damage of wind on the materials and improve their anti-wind erosion properties. These findings suggest th
机译：本文首次揭示了材料阻尼性能对其砂定耐久性的影响。基于风的湍流，可以被视为一种周期性的机械力。因此，当聚合物用于固定沙子时，它们会不断感知风的周期性。并且，这种力将产生屈服和聚合物的骨折和疲劳，从而可以显着减弱材料的砂固定耐久性。为了损害风的周期性和延长沙固定聚合物材料的耐久性，我们首次介绍了大分子阻尼材料的设计原理，可以将外部机械力转化为自身的热能，进入砂的制备 - 混合材料。在这项工作中，已经成功地合成了具有不同悬空链的聚（乙酸乙烯酯）（PVAC）乳液，以改善其阻尼性能。在砂稳定强度和砂固定耐久性上，研究了制备的PVAC与逐渐生长悬垂链长的效果。通过模拟风隧道试验，构建了PVAC的阻尼性能与砂固定性能之间的关系。实验结果表明，引入悬空链可以显着提高阻尼温度范围，延长PVAC的抗风腐蚀时间。必须注意的是，引入悬空链，将为材料的砂稳定强度提供双重作用，即，它可以改善侧链的灵活性和分子链的内部摩擦。风洞试验证实，引入悬空链可以提高材料的阻尼性能，并将风力的更加周期性转化为分子链的摩擦热，因此损害了对材料上风的损坏，提高了它们的抗风腐蚀性能。这些研究结果表明了

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