LFT foam - Lightweight potential for semi-structural components through the use of long-glass-fiber-reinforced thermoplastic foams
LFT foam - Lightweight potential for semi-structural components through the use of long-glass-fiber-reinforced thermoplastic foams
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LFT 泡沫 - 通过使用长玻璃纤维增强热塑性泡沫，实现半结构部件的轻量化潜力
DOI：
10.1063/1.4873824
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发表时间：
2014
期刊：
影响因子：
15.1
通讯作者：
P. Elsner
中科院分区：
文献类型：
--
作者：
A. Roch;T. Huber;F. Henning;P. Elsner
采用不同的制造工艺对PP-LGF 30泡沫夹层进行了研究：标准注塑成型、MuCell®和LFT-D泡沫。采用化学发泡剂和物理发泡剂。发泡工艺选择了精密开模（呼吸模具技术）。整体泡沫设计可被视为夹层结构，有助于节省中性轴区域的材料，并保持承重、未发泡表层之间的距离。实验表明，在单位面积质量不变的情况下，整体式泡沫材料的抗弯刚度显著高于紧凑型组件，这是因为它们在发泡后具有更大的面积惯性矩：与紧凑型结构相比，壁厚从3.6 mm增加到4.4 mm，抗弯刚度增加了75%。在最终壁厚为5.8 mm的情况下，测量到增加了300%。与在发泡过程中表现出显著脆化的非增强部件相比，能量吸收率...
Investigations on PP-LGF30 foam sandwiches have been carried out using different manufacturing processes: standard injection molding, MuCell® and LFT-D foam. Both chemical and physical blowing agents were applied. Precision mold opening (breathing mold technology) was selected for the foaming process. The integral foam design, which can be conceived as a sandwich structure, helps to save material in the neutral axis area and maintains a distance between load-bearing, unfoamed skin layers. The experiments showed that, at a constant mass per unit area, integral foams have a significantly higher flexural rigidity than compact components, due to their greater area moment of inertia after foaming: with an increase of the wall thickness from 3.6 mm to 4.4 mm compared to compact construction, the flexural rigidity increased by 75 %. With a final wall thickness of 5.8 mm an increase of 300 % was measured. Compared to non-reinforced components that show significant embrittlement during foaming, the energy absorpti...