摘要：水性汽车修补涂料的开发对于涂料配方设计师而言是一个挑战,因为他们将面对大量的原本在传统溶剂型涂料中并不突显的问题:较差的基材润湿性、涂膜缩孔、过多的泡沫、桔皮表面,针孔和溶剂爆孔。用有代表性的标准底漆、色漆和罩光漆配方进行涂布研究,结果表明:高性能表面活性剂和分子消泡剂可以帮助配方师解决这些问题,而不会对涂料的再涂性、层间附着力或涂膜性能产生不良影响。

摘要：Currently,artificial-membrane lungs consist of thousands of hollow fiber membranes where blood flows around the fibers and gas flows inside the fibers,achieving diffusive gas *** both ends of the fibers,the interspaces between the hollow fiber membranes and the plastic housing are filled with glue to separate the gas from the blood *** a uniaxial centrifugation process,the glue forms the“potting.”The shape of the cured potting is then determined by the centrifugation process,limiting design possibilities and leading to unfavorable stagnation zones associated with blood *** this study,a new multiaxial centrifugation process was developed,expanding the possible shapes of the potting and allowing for completely new module designs with potentially superior blood flow guidance within the potting ***-phase simulations of the process in conceptual artificial lungs were performed to explore the possibilities of a biaxial centrifugation process and determine suitable parameter sets.A corresponding biaxial centrifugation setup was built to prove feasibility and experimentally validate four conceptual designs,resulting in good agreement with the *** summary,this study shows the feasibility of a multiaxial centrifugation process allowing greater variety in potting shapes,eliminating inefficient stagnation zones and more favorable blood flow conditions in artificial lungs.