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海洋污损生物是海洋资源开发首先要面对的问题。防污涂料是防除海洋污损生物的关键材料。传统的防污涂料虽然发展成熟,但以油性溶剂为介质,存在挥发性有机物(VOC)排放过高、环境污染严重的问题。不释放VOC的水性涂料符合绿色无污染的环保要求,是防污材料领域研究的热点。本文对最重要的四种水性防污涂料(污损释放型水性低表面能防污涂料、自抛光型水性防污涂料、污损阻抗型水凝胶海洋防污涂料、强碱释放型水性硅酸盐防污涂料)从防污机理、制备方法和存在的问题等几个方面进行了综述,并对水性防污涂料的发展趋势进行了展望。 相似文献
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反应性聚合物微凝胶的合成及应用 总被引:9,自引:0,他引:9
反应性聚合物微凝胶是一种具有反应活性,分子内交联的高分子。它具有优良的加工性能,涂膜的力学性能及耐久性也十分优异,主要应用于制备高档涂料或对涂料进行改性,本文着重介绍了反应性聚合物微凝胶的合成方法及其在涂料改性方面的应用。 相似文献
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Feng Li Melisa Rodas Ceballos Sepideh Keshan Balavandy Jingxi Fan Mohammad Mahdi Khataei Yadollah Yamini Fernando Maya 《Journal of separation science》2020,43(9-10):1854-1866
In the last 5 years, additive manufacturing (three‐dimensional printing) has emerged as a highly valuable technology to advance the field of analytical sample preparation. Three‐dimensional printing enabled the cost‐effective and rapid fabrication of devices for sample preparation, especially in flow‐based mode, opening new possibilities for the development of automated analytical methods. Recent advances involve membrane‐based three‐dimensional printed separation devices fabricated by print‐pause‐print and multi‐material three‐dimensional printing, or improved three‐dimensional printed holders for solid‐phase extraction containing sorbent bead packings, extraction disks, fibers, and magnetic particles. Other recent developments rely on the direct three‐dimensional printing of extraction sorbents, the functionalization of commercial three‐dimensional printable resins, or the coating of three‐dimensional printed devices with functional micro/nanomaterials. In addition, improved devices for liquid–liquid extraction such as extraction chambers, or phase separators are opening new possibilities for analytical method development combined with high‐performance liquid chromatography. The present review outlines the current state‐of‐the‐art of three‐dimensional printing in analytical sample preparation. 相似文献
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This paper describes the fabrication process for the thin cast-in-place laminate glazing systems to be used in cars of the
future to achieve the weight reduction goals of FreedomCAR. The primary objective of the project is to reduce vehicle weight,
improve fuel economy, and reduce vehicle emissions through the use of structurally reliable, high acoustic performance, and
lightweight glazing systems with low manufacturing costs. Energy savings come from reducing weight by using thinner glazing:
prior studies at Pacific Northwest National Laboratory (PNNL) have demonstrated a potential of 30% weight reductions compared
with standard glazing system. Energy savings will also come from reducing interior heat loads; that, in turn, will reduce
the demand for air conditioning. The evaluation of alternative glazing concepts seeks to improve acoustical performance such
that reduced interior noise levels can be achieved while maintaining glazing at minimal thickness and weight levels. The most
important factor in utilizing laminated glazing systems as vehicle side glass is its advantage in cost savings for material
and manufacturing processes.
Published in Russian in Vysokomolekulyarnye Soedineniya, Ser. A, 2008, Vol. 50, No. 5, pp. 862–867.
This article was submitted by the authors in English. 相似文献
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本文论述了聚合物熔体注模过程中弹性特性的几种重要的表现。对于国内外学者在熔体弹性行为的表征及过程机理的解释等方面的研究进展作了简要的述评,并综述了作者及其同事近年来在这方面所做的工作。 相似文献