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Kai S Johann¹, Andreas Wolf¹, Christian Bonten¹

¹Institut für Kunststofftechnik, University of Stuttgart, 70569 Stuttgart, Germany.

Materials (Basel, Switzerland)

|January 11, 2024

概括

本研究探讨在化丝制造 (FFF) 中使用液晶聚合物 (LCP). 较低化温度的LCP更适合FFF,通过优化打印参数产生更好的机械性能.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
增材制造增材制造增材制造

背景情况:

增材制造 (AM) 可以在没有模具的情况下创建复杂的零件,使用塑料,金属和陶.
像PEEK和PEI这样的高性能聚合物是在AM中建立的.
热热型液晶聚合物 (LCPs) 在液态阶段表现出独特的异热性特性,与传统聚合物不同.

研究的目的:

研究热otropic液晶聚合物 (LCPs) 适用于化丝制造 (FFF) 的适用性.
将LCPs的可加工性和机械性能与低 (约. 280°C) 和高 (大约. 330°C) 的融化温度在FFF中.

主要方法:

两种不同化温度的LCP的化丝制造 (FFF).
过程参数的系统变化:沉积方向,打印温度,打印速度和层高度.
印刷LCP组件的机械性能测试 (斯模量,抗拉强度).
印刷后回火处理,以评估其对机械性能的影响.

主要成果:

在0.10毫米的层高度下,达到27.3 GPa的扬斯模量.
在0.15毫米的层高度下,通过印刷后回火增加了高达406MPa的抗拉强度.
证明机械性能高度依赖于工艺参数和LCP化温度.

结论:

液晶聚合物 (LCP) 显示为化丝制造 (FFF) 的前景.
具有较低融温度的LCP对于FFF加工和实现优异的单轴机械性能更有利.
优化工艺参数和后处理步骤,如化,对于最大限度地提高AM中的LCP性能至关重要.

关键词:

通过3D打印打印3D打印.化纤维制造 (FFF) 是一种液晶聚合物 (LCP) 是一种液晶聚合物.机械性能机械性能机械性能塑料塑料的塑料是一种塑料.聚合物是一种聚合物.拉力测试是拉力测试.

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