Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Study on the Strength Characteristics of PP and ABS According to the Ratio of Recycled Resin

재사용 수지 비율에 따른 PP, ABS의 강도 특성에 관한 연구

  • Jun-Han Lee (Digital Manufacturing Division, Korea Institute of Industrial Technology) ;
  • Jong-Sun Kim (Digital Manufacturing Division, Korea Institute of Industrial Technology)
  • 이준한 (한국생산기술연구원 디지털생산부문) ;
  • 김종선 (한국생산기술연구원 디지털생산부문)
  • Received : 2024.06.15
  • Accepted : 2024.06.30
  • Published : 2024.06.30
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Abstract

In this study, the recyclability of commonly used PP (polypropylene) and ABS (acrylonitrile butadiene styrene) was evaluated by molding test specimens from mixture of virgin and shredded material, followed by measuring their strength properties, Experiments were conducted o two type of PP (transparent and non-transparent) and two types of ABS (white and yellow). Test specimens for each resin were prepared with shredded material ratios ranging from 10% to 50% in 10% increments. Changes in tensile strength, elastic modulus, and elastic limit were analyzed based on the mixing ratio of the shredded material. The experimental results demonstrated that the strength properties of all the resins remained consistent within a certain range, even with increasing proportions of shredded material. For transparent PP, the tensile strength ranged from 30.87± MPa, the elastic modulus from 1.23±0.04 GPa, and the elastic limit from 19.17±0.44%. Non-transparent PP exhibited a tensile strength ranging from 27.71±0.58 MPa, an elastic modulus from 1.03±0.06 GPa, and an elastic limit from 17.35±0.41%. For ABS, white ABS had a tensile strength of 39.42±0.28 MPa, an elastic modulus of 1.94±0.01 GPa, and an elastic limit of 36.76±0.25%. Yellow ABS showed a tensile strength of 39.25±0.78 MPa, an elastic modulus of 1.94±0.01 GPa, and an elastic limit of 37.14±0.23%, with values remaining consistent within this range. Based on these results, it was confirmed that the mechanical properties of the resins used in this study do not change significantly when mixed with recycled shredded material, indicating excellent mechanical recyclability.

Keywords

Acknowledgement

본 연구는 중소벤처기업부의 스마트제조혁신기술개발사업의 사출성형품의 품질 고도화를 위한 실시간 사출성형 품질예측 솔루션 개발(SE240060, 00140364)과제의 지원을 받아 수행되었다.

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