HP Labs, 1501 Page Mill Road, Palo Alto, CA, 94304, USA.
Nat Commun. 2023 Feb 3;14(1):586. doi: 10.1038/s41467-022-35195-4.
HP's Multi Jet Fusion is a powder bed fusion 3D printing technology that utilizes a carbon-based radiation absorber in combination with a near infrared (NIR) light source to facilitate the fusion of polymer powder in a layer-by-layer fashion to generate 3D parts. Most available carbon-based and NIR radiation absorbers have an intrinsic dark color, which as a result will only produce black/gray and dark colored parts. However, there are many applications that require variable color, including prosthetics, medical models, and indicators, among others. To create white, bright colored, and translucent parts with MJF, a visibly transparent and colorless radiation absorber is required. In this paper, we designed an activating fusing agent (AFA) that contains a red, strong NIR absorbing dye that turns colorless after harvesting irradiation energy during the MJF 3D printing process and provide a bright colored part when working with other color agents.
惠普的多射流熔融技术是一种粉末床熔融 3D 打印技术，它利用基于碳的辐射吸收剂与近红外 (NIR) 光源相结合，以促进聚合物粉末在逐层方式中的融合，从而生成 3D 零件。大多数现有的基于碳的和 NIR 辐射吸收剂具有固有深色，因此只能产生黑色/灰色和深色零件。然而，有许多应用需要可变颜色，包括假肢、医学模型和指示器等。为了使用 MJF 制造白色、鲜艳的和半透明的零件，需要使用可见透明且无色的辐射吸收剂。在本文中，我们设计了一种激活融合剂 (AFA)，它包含一种红色、强 NIR 吸收染料，在 MJF 3D 打印过程中吸收辐射能后会变成无色，并在与其他颜色剂一起使用时提供鲜艳的颜色零件。
