工程化学家已经创新了古老的折纸艺术,开发出了一种从玻璃或其他硬材料制作复杂的3D形状的现代方法。这种技术可以与三维打印相结合,具有雕塑和催化等各种领域的潜在应用。这项研究成果将于美国化学学会(ACS)春季会议上展示。

折纸艺术以将纸张和其他可折叠材料转变为复杂的3D形状而闻名。但如今,化学工程师将这项古老的做法推广到了玻璃或其他硬材料的制造中。他们的现代化方法可以与三维打印相结合,其应用范围涵盖从雕塑到催化等各个领域。研究人员将在ACS春季会议上展示他们的成果。 ACS Spring 2023是一个跨越线上和线下的会议,将于3月26日至30日举行,共包括超过10,000个关于各种科学主题的报告。

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在此前的工作中,研究人员使用折纸和相关的切割折叠技术(kirigami)来塑造由聚合物制成的软性材料。这项研究的负责人Tao Xie士表示:“但我们希望将这些技术扩展到比聚合物更难成型的玻璃和陶瓷中。”

通常,玻璃和陶瓷是通过模具塑形或以所需的最终结构进行3D打印而制造的。但模具无法生产复杂形状,而3D打印则速度缓慢,而且需要在制造过程中添加额外支撑。此外,制作出的物品通常具有层次纹理,可能不是理想的外观。该团队力图克服这些缺点。

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浙江大学Xie实验室的研究生Yang Xu设计了一种技术,在一个含有几种化合物的液体中混合了二氧化硅的纳米颗粒,二氧化硅是制作玻璃的主要成分。用紫外线光固化该混合物会产生交联聚己内酯聚合物,其中悬浮着像葡萄干面包一样的小颗粒物。

接下来,Xu在这种半透明的聚合物复合材料上切割、折叠、扭转和拉伸,制作出了鹤、羽毛、蕾丝花瓶和由交织丝带制成的球体等其他物品。如果这样做时在室温下进行,复合材料在后续生产步骤中仍能保持其新形状。 Xu发现,这是因为折叠和拉伸过程不可逆地破坏了一些颗粒物和聚合物基体之间的界面。但如果在折叠和拉伸时需要完全保留新的形状,Xu发现复合材料必须在加热至大约摄氏265度时进行。这会永久重新排列聚合物链之间的链接,将新的形状牢固地固

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In Other News Around the World:

Wheelchair Headrests market analysis provides a comprehensive understanding of the market penetration of sales channels with matching future potential, as verified by industry experts & also include a CAGR of 8.6%

Surgical Trolley market report with a striking CAGR 7.3% provides sales analysis, impact of domestic and international market players, value chain optimization, trade regulations, recent developments, opportunities analysis, strategic market growth analysis, product launches, local marketplace expansion, and technological innovations.

Trellises report identifies the leading companies and provides analysis of key factors influencing this industry, such as current market trends, market forecast, opportunities, and economic trends that will affect the marketplace in the future at a Striking 9.5% CAGR Forecasted from 2023 to 2030

作者 董阳

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