Foams with Enhanced Ductility and Impact Behavior Based on Polypropylene Composites

Polymers

Cristina Saiz-Arroyo¹  Santiago Muñoz-Pascual²  MiguelAngel Rodriguez-Perez²  MihaiCosmin Corobea³  Zina Vuluga³ 

[1] CellMat Technologies S.L., Paseo de Belen 9-A (CTTA Building), 47011 Valladolid, Spain;Cellular Materials Laboratory (CellMat), Universidad de Valladolid, 47011 Valladolid, Spain;National Institute for Research and Development in Chemistry and Petrochemistry-ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania;

关键词: polypropylene;    long-chain branching;    SEBS;    halloysite nanotubes;    foam;    impact strength;   

DOI  :  10.3390/polym12040943

来源: DOAJ

【 摘 要 】

In this work, formulations based on composites of a linear polypropylene (L-PP), a long-chain branched polypropylene (LCB-PP), a polypropylene–graft–maleic anhydride (PP-MA), a styrene-ethylene-butylene-styrene copolymer (SEBS), glass fibers (GF), and halloysite nanotubes (HNT-QM) have been foamed by using the improved compression molding route (ICM), obtaining relative densities of about 0.62. The combination of the inclusion of elastomer and rigid phases with the use of the LCB-PP led to foams with a better cellular structure, an improved ductility, and considerable values of the elastic modulus. Consequently, the produced foams presented simultaneously an excellent impact performance and a high stiffness with respect to their corresponding solid counterparts.

【 授权许可】

Unknown