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
-
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400 μm、长度700 μm、壁厚20 μm、两端开口的金柱腔中原位成型成功制备出密度为50 mg·cm-3、蜂窝直径不超过1 μm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。Abstract: The preparation of microcellular 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
-
Key words:
- acrylate /
- microporous foam /
- in situ production /
- gold cylinder
-
点击查看大图
计量
- 文章访问数: 2240
- HTML全文浏览量: 297
- PDF下载量: 525
- 被引次数: 0
下载:
