微型金柱腔中原位成型制备微孔泡沫  

In situ production of microporous foams in sub-millimeter cylindrical gold targets

作　　者：范勇恒[1] 罗炫[1] 方瑜[1] 任洪波[1] 袁光辉[1] 王红莲[1] 周兰[1] 张林[1] 杜凯[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2009年第6期855-858,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2008B0302032)

摘　　要：报道了在μm量级圆柱状金柱腔中原位成型制备微孔泡沫的方法。在直径400μm、长度700μm、壁厚20μm、两端开口的金柱腔中原位成型成功制备出密度为50mg·cm-3、蜂窝直径不超过1μm的多元丙烯酸酯聚合物微孔泡沫。干燥过程中泡沫没有明显收缩,在柱腔中填充紧密,无需后续机械加工。The preparation of microeellular foam in sub-millimeter cylindrical gold targets is described. Small, open-ended, gold cylinders of 400 μm diameter, 700 μm length, and 20 μm wall thickness were fabricated by electroplating gold onto a silicon bronze mandrel and leaching the mandrel with concentrated nitric acid. After several rinsing and cleaning steps, the cylinders were filled with a solution containing acrylate monomers. The solution was polymerized in situ with ultraviolet light to produce a gel. Precipitation of these gels in a non-solvent such as methanol and subsequent drying by means of a critical point drying apparatus produced cylinders filled with microporous foams. The foams have densities of 50 mg ·cm^- 3 and cell sizes no more than 1 μm. They fill the cylinders completely without shrinkage during the drying process, and need no subsequent machining.

关 键 词：丙烯酸酯 微孔泡沫 原位成型 金柱腔 

分 类 号：TB324[一般工业技术—材料科学与工程]