Recycling of Epoxy Resin via Blending with Polycaprolactone for Fused Filament Fabrication 3D Printing Applications

被引：0

作者：

Razquin, Iker ^{[1
,2
]}

Mediavilla, Leire ^{[1
,2
]}

Cobos, Monica ^{[1
,2
]}

Insua, Itziar ^{[1
,2
]}

Calafel, Itxaso ^{[1
,2
]}

Aranburu, Nora ^{[1
,2
]}

Larraza, Izaskun ^{[3
]}

Martin, Loli ^{[4
]}

Gonzalez, Alba ^{[1
,2
]}

Irusta, Lourdes ^{[1
,2
]}

机构：

[1] Univ Basque Country UPV EHU, POLYMAT, POB 1072, Donostia San Sebastian 20080, Spain

[2] Univ Basque Country UPV EHU, Dept Polymers & Adv Mat Phys Chem & Technol, POB 1072, Donostia San Sebastian 20080, Spain

[3] Univ Basque Country UPV EHU, Dept Chem & Environm Engn, Grp Mat Technol, Plaza Europa 1, Donostia San Sebastian 20018, Spain

[4] Univ Basque Country UPV EHU, Fac Engn, Macrobehav Mesostruct Nanotechnol SGIker Serv, Plaza Europa 1, Donostia San Sebastian 20018, Spain

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2025年

关键词：

3D printed and reinforced PCL; epoxy resin; fiberglass epoxy filler; mechanical recycling; MECHANICAL-PROPERTIES; COMPOSITES; PLASTICS; CRYSTALLIZATION; WASTE; POLY(EPSILON-CAPROLACTONE); TEMPERATURE; CONDUCTION; BEHAVIOR; RELEASE;

D O I：

10.1002/mame.202500131

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

As a way of recycling epoxy thermoset materials, they were blended with polycaprolactone (PCL) and processed in the form of filament to be used for fused deposition modeling (FDM) 3D printing. Three different epoxy materials were considered: a lab-cured epoxy resin, a lab-cured epoxy/PCL blend, and a commercial epoxy composite containing fiberglass (FR4). These three thermosets were milled and mixed with pure PCL. The distribution of the epoxy in the PCL matrix was analyzed by Fourier Transform Infrared Spectroscopy (FTIR) coupled to a microscope. The filler FR4 and DGEBA were adequately distributed in the matrix. The rheological study anticipated good adhesion between the layers, without clogging at printing temperatures. The rheological model also predicted filament buckling. Because of that, external assistance (PLA) was required to obtain appropriate printed samples, avoiding buckling. The mechanical properties of the specimens were determined by tensile tests and compared with injection molded specimens. It was observed that the incorporation of the epoxy thermoset to the PCL matrix enhanced Young's modulus of PCL. Very similar results were obtained between 3D printed and injected samples. The proposed method could be of significant interest in employing thermoset epoxy waste as a cost-effective reinforcement for fuse filament 3D printing materials.

引用

页数：17

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