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首页> 外文期刊>Journal of Coating Technology >Cure Behavior of Silicone-Epoxies and Urethane Modified Acrylates in Interpenetrating Polymer Networks
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Cure Behavior of Silicone-Epoxies and Urethane Modified Acrylates in Interpenetrating Polymer Networks

机译：互穿聚合物网络中有机硅环氧树脂和氨基甲酸酯改性丙烯酸酯的固化行为

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摘要

In an attempt to improve the toughness and flexibility of poly(epoxy-urethane-acrylic), interpenetrating polymer network (IPN) coatings conventional bisphenol A type epoxy was replaced with silicone containing epoxy. By comparing silicone epoxy containing samples with bisphenol A controls, the effect of siloxane modification on the properties of the materials thus formed were tested. The coatings were formulated to typical automotive primer conditions (in the absence of any pigments) and tested for solvent resistance, lap shear strength, impact resistance, and thermal stability. The formation of IPNs was established by changes in the thermal behavior of the coatings as well as by the synergistic effects noted in the physical and mechanical properties achieved in the formulated coatings. In formation of the silicone modified IPNs, however, it was noted that cure response was diminished versus control. Therefore, we undertook a cure study to determine the effects of catalysts and trifunctional acrylates on the resultant properties in the IPN coatings. This paper describes the chemistries and formulations utilized in attaining the aforementioned properties.
机译：为了提高聚（环氧-氨基甲酸酯-丙烯酸）的韧性和柔韧性，将互穿聚合物网络（IPN）涂料常规的双酚A型环氧树脂替换为含硅氧烷的环氧树脂。通过将含硅氧烷环氧的样品与双酚A对照进行比较，测试了硅氧烷改性对如此形成的材料的性能的影响。将涂料调配为典型的汽车底漆条件（不存在任何颜料），并测试其耐溶剂性，搭接剪切强度，耐冲击性和热稳定性。 IPN的形成是通过改变涂层的热性能以及通过在配制的涂层中实现的物理和机械性能中注意到的协同效应来确定的。然而，在形成有机硅改性的IPN时，应注意的是，固化反应相对于对照反应减弱了。因此，我们进行了固化研究，以确定催化剂和三官能丙烯酸酯对IPN涂层所得性能的影响。本文介绍了用于实现上述特性的化学方法和配方。

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