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首页> 外文会议>European Additives amp; Colors Conference; 20050316-17; Aachen(DE) >NANO CLAY ADDITIVES FOR OXYGEN AND HUMIDITY BARRIER OF POLYMERS
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NANO CLAY ADDITIVES FOR OXYGEN AND HUMIDITY BARRIER OF POLYMERS

机译：聚合物的氧和湿气屏障纳米粘土添加剂

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摘要

The technology of nano clay polymer composites is currently generating a great deal of interest due to its potential cost effective advantages in barrier properties. The emergence of commercial nano clays (Montrillonite type) opened new avenues for anti-corrosion coatings due to the high barrier to oxygen and humidity that nano clays can impart to conventional paint formulations. Nano clays appear in nature in condensed structure. When properly exfoliated to single platelets, that possess a thickness of 1 nanometer (nm) with an aspect ratio of close to 1000, they assume a surface area of 750 m~2/gr. Uniform dispersion of the nano clay platelets requires its chemical compatibilisation with the polymer system. In the current study the effectiveness of nano clays as barrier elements to corrosion elements (oxygen and humidity), was investigated in order to obtain anti-corrosion paints and coatings. Experimental results showed that commercial epoxy paints based on Di-Glycidyl-Ether of Bis-Phenol A (DGEBPA) with polyamide curing agent could be improved significantly by incorporation of 1-5% weight of nano clays. Best results were demonstrated with a novel chemical treatment developed in ShenTech. With the novel treatment oxygen permeability was reduced by 5-fold and humidity permeation by 9 fold. Salt spray testing for 12 months verified the anti corrosion properties of the nano paint composite system.
机译：纳米粘土聚合物复合材料的技术由于其在阻隔性能方面潜在的成本优势而引起了人们的极大兴趣。由于纳米粘土可以赋予常规涂料配方以较高的氧气和湿度阻隔性，因此商用纳米粘土（蒙脱土型）的出现为防腐涂料开辟了新途径。纳米粘土以凝结结构出现在自然界中。当适当剥落成厚度为1纳米（nm），纵横比接近1000的单个血小板时，它们的表面积为750 m2 / gr。纳米粘土薄片的均匀分散需要其与聚合物体系的化学相容性。在当前的研究中，为了获得防腐蚀的油漆和涂料，研究了纳米粘土作为腐蚀元素（氧气和湿气）的阻挡元素的有效性。实验结果表明，通过掺入1-5％的纳米粘土，可以显着改善基于双酚A的双缩水甘油醚（DGEBPA）和聚酰胺固化剂的商业环氧涂料。 ShenTech开发的新型化学处理方法证明了最佳结果。采用这种新的处理方法，氧气渗透率降低了5倍，湿度渗透降低了9倍。经过12个月的盐雾测试，验证了纳米涂料复合系统的抗腐蚀性能。

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