期刊
JOURNAL OF CELLULAR PLASTICS
卷 57, 期 3, 页码 313-327出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021955X20943097
关键词
Polypropylene foams; injection molding; hollow glass microspheres; thermally expandable microspheres; Taguchi; DOE
资金
- Ministerio de Economia y Competitividad [MAT2017-85101-C2]
A foaming system composed of hollow glass microspheres and thermally expandable microspheres was used in injection molding to achieve a balance between higher flexural properties and lower density required for automotive interior parts. Experimental plan using Taguchi's L16 and optimization based on signal to noise ratio were employed, with melt and mold temperature identified as important injection molding parameters. The amount of HGM had the most significant effect on flexural modulus, while the amount of EM had the greatest impact on density.
A foaming system composed by hollow glass microspheres (HGM) and thermally expandable microspheres (EM) was used to achieve a balance between selected properties of foamed polypropylene (PP) by injection molding, combining the higher flexural properties and lower density required on automotive interior parts. Taguchi's L16 (44.23) was employed for the experimental plan and signal to noise ratio (S/N) for the optimization of the system raised. The two important injection molding parameters affecting selected properties were melt and mold temperature. The most important effect on flexural modulus was the amount of HGM, and for density the amount of EM.
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