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A Study of the Optimization of the Compounded PP Using the DOE  

Park, Sung-Ho (R&D Center, Hanil E-Hwa Co. LTD.)
Lim, Dong-Cheol (R&D Center, Hanil E-Hwa Co. LTD.)
Kim, Ki-Sung (R&D Center, Hanil E-Hwa Co. LTD.)
Bae, Jong-Rak (R&D Center, Hanil E-Hwa Co. LTD.)
Jeon, Oh-Hwan (R&D Center, Hanil E-Hwa Co. LTD.)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.1, 2010 , pp. 74-85 More about this Journal
Abstract
In order to formulate the compounded polypropylene(C-PP) which is suitable to an automotive door trim panel, 9 sorts of properties were measured after manufacturing the C-PP using an extruder and an injection machine with polypropylene(PP), ethylene-octene rubber(EOR) and talc. Mixture design, especially extreme vertices design, in DOE with MINITAB - commercial software was used to analyze the data. The relations between each property and each component, for example, $y=0.00907222x_1+0.00870556x_2+0.0155722x_3$ for specific gravity, were found out by the regression analysis and the variance analysis. The optimized formulation of the C-PP for an automotive door trim panel was acquired at PP(77.6962), EOR(11.0238) and talc(10.2800) by use of the response optimizer(mixture) in MINITAB.
Keywords
Polypropylene; Ethylene-octene rubber(EOR); Talc; Compounded polypropylene; Mixture design; DOE; Door trim panel;
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