Dimensional Stability and Process Capability of an Industrial Component Injected with Recycled Polypropylene

Galve, J.E. ; Elduque, D. (Universidad de Zaragoza) ; Pina, C. (Universidad de Zaragoza) ; Clavería, I. (Universidad de Zaragoza) ; Acero, R. (Universidad de Zaragoza) ; Fernández, A. (Universidad de Zaragoza) ; Javierre, C. (Universidad de Zaragoza) ;

Resumen: The usage of recycled polymers for industrial purposes arises as one of the most promising methods of reducing environmental impact and costs associated with scrapping parts. This paper presents a systematic study of the dimensional stability of a raw and 100% recycled polypropylene subjected to realistic environmental conditions occurring along its working life. The component studied is an internal part of an induction hob assembly. Industrial samples manufactured with both materials, in the same mold, and in the same injection machine, are subjected to ejection conditions, storage conditions (50 °C), and extreme performance conditions (80 °C). Induced dimensional changes are registered and analyzed using a coordinate measuring machine, and a tactile sensing probe. To verify the process capability of the samples manufacturing, Cp and Cpk values are calculated to evaluate the suitability of the recycled material as an alternative. Results conclude that, although the use of recycled material implies slight differences in terms of dimensional stability due to the changes induced in the polymer structure, these differences are not significant enough to affect the injection process capability. Therefore, recycling arises as one effective method to reduce both overruns associated with the consumption of raw polypropylene material and its environmental impact.

Idioma: Inglés

DOI: 10.3390/polym11061063

Año: 2019

Publicado en: Polymers 11 (2019), 1063 [16 pp.]
ISSN: 2073-4360

Factor impacto JCR: 3.426 (2019)

Categ. JCR: POLYMER SCIENCE rank: 16 / 89 = 0.18 (2019) - Q1 - T1

Factor impacto SCIMAGO: 0.704 - Polymers and Plastics (Q1) - Chemistry (miscellaneous) (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T08-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTC-2014-1847-6
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTC-2017-5965-6

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Mecánica (Dpto. Ingeniería Mecánica)
Área (Departamento): Área Expresión Gráfica en Ing. (Dpto. Ingeniería Diseño Fabri.)
Área (Departamento): Área Ing. Procesos Fabricación (Dpto. Ingeniería Diseño Fabri.)