LFT foam - Lightweight potential for semi-structural components through the use of long-glass-fiber-reinforced thermoplastic foams

被引:3
作者
Roch, A. [1 ,2 ]
Huber, T. [1 ]
Henning, F. [1 ,3 ]
Elsner, P. [2 ]
机构
[1] Fraunhofer Inst Chem Technol ICT, Dept Polymer Engn, Joseph von Fraunhofer Str 7, D-76327 Pfinztal, Germany
[2] Karlsruhe Inst Technol KIT, Inst Appl Mat Mat Sci, Karlsruhe, Germany
[3] Karlsruhe Inst Technol KIT, Inst Vehicle Syst Technol, Karlsruhe, Germany
来源
PROCEEDINGS OF PPS-29: THE 29TH INTERNATIONAL CONFERENCE OF THE POLYMER - CONFERENCE PAPERS | 2014年 / 1593卷
关键词
long-fiber-reinforced foam; LFT foam; LFT-D foam;
D O I
10.1063/1.4873824
中图分类号
O59 [应用物理学];
学科分类号
摘要
Investigations on PP-LGF30 foam sandwiches have been carried out using different manufacturing processes: standard injection molding, MuCell (R) 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 absorption capacity (impact strength) of LFT foam components remains almost constant.
引用
收藏
页码:471 / 476
页数:6
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