Effects of Recycling Cycles and Coupling Agent on the Properties of Wood Fiber/Polypropylene Composites

• 영문명: Effects of Recycling Cycles and Coupling Agent on the Properties of Wood Fiber/Polypropylene Composites
• 발행기관: 한국가구학회
• 저자명: 이단비 김범준 권재경
• 간행물 정보: 『한국가구학회지』제33권 제4호, 556~565쪽, 전체 10쪽
• 주제분류: 예술체육 > 미술
• 파일형태: PDF
• 발행일자: 2022.12.31

영문 초록

In this study, various properties (mechanical, thermal, and morphological properties) of wood fiber/polypropylene (WF/PP) composites were evaluated for the core-layer application of coextruded wood plastic composites (WPCs) with and without a coupling agent. The WF/PP composites were fabricated using a twin-screw extruder in the variation of extrusion cycles to mimic recycling cycles. As the number of extrusion cycles increased, the mechanical and thermal properties of the composites decreased and showed minor changes, respectively. The maximum reduction in percentage values for the mechanical properties of the repeatedly extruded WF/PP composites was less than 15%, while the change in thermal properties was negligible. The addition of the coupling agent (i.e., MAPP) affected the mechanical properties (particularly, tensile and flexural strength) and thermal stability of the composites, even when the number of extrusion cycles was increased. Since the composites with 50 wt% WF had good stiffness, when the MAPP was added, the differences in the modulus values of the composites were smaller than those in the strength values. Various thermal property results demonstrated slight reductions as the number of recycling cycles increased, but the differences between 3- and 5-cycle extruded samples were very small. Based on these results, recycled WF/PP composites with coupling agent can be used as viable and sustainable building, furniture and 3D printing materials as well as core-shell coextruded composites having recycled WPC cores regardless of recycling cycles

목차

1. Introduction

2. Materials and Methods

3. Results and Discussion

4. Conclusions

Acknowledgement

References

키워드

recycled WPCs WF/PP composites coextruded WPCs coupling agent recycling cycle extrusion cycle 3D printing mechanical property thermal property morphological property