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Toughened polypropylene with balanced rigidity. III. Compositions and mechanical properties
Hongjie Zhang; Jingwu Wang; Jing Li; Shaokui Cao; Ai'Guo Shan
2001
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume78Issue:8Pages:1345-1350
Abstract

Toughened polypropylene with balanced rigidity (TRPP) was prepared by thermal mechanical blending of PP resin with a toughening master batch (TMB) in a twin screw extruder. The dependence of the mechanical properties of TRPPs on the ratio of ethylene‐propylene to styrene‐butadiene elastomers, the total elastomer content in the TRPP, and the amount of elastomers in the TMB were investigated. The TRPP with a total elastomer content of 14 wt %, which was made from a TMB with 32 wt % elastomer and a 80/20 (w/w) ratio of ethylene‐propylene to styrene‐butadiene elastomers, was found to have excellent balanced mechanical properties. The notched Izod impact strength at 23°C was 762 J/m (23 times that of PP), the flexural modulus was 1078 MPa (92% of that of PP), and the tensile strength at yield was 34.8 MPa (88% of that of PP). Moreover, its mechanical properties were much better than the simply blended sample with the same composition, demonstrating that dynamic vulcanization and polymer‐bridge conjunction are excellent techniques to produce a high‐impact, high‐modulus PP. A sharp brittle–ductile transition was found at 14 wt % total elastomer content, which was assumed to be a percolation phenomenon. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 1345–1350, 2001

KeywordToughened Polypropylene Balanced Rigidity Mechanical Properties Compositions
DOIhttps://doi.org/10.1002/1097-4628(20010222)79:8<1345::AID-APP10>3.0.CO;2-W
Indexed BySCIE
Language英語English
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000166230400001
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationDepartment of Materials Engineering, Zhengzhou University, Zhengzhou 450052, People's Republic of China
Recommended Citation
GB/T 7714
Hongjie Zhang,Jingwu Wang,Jing Li,et al. Toughened polypropylene with balanced rigidity. III. Compositions and mechanical properties[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2001,78(8):1345-1350.
APA Hongjie Zhang,Jingwu Wang,Jing Li,Shaokui Cao,&Ai'Guo Shan.(2001).Toughened polypropylene with balanced rigidity. III. Compositions and mechanical properties.JOURNAL OF APPLIED POLYMER SCIENCE,78(8),1345-1350.
MLA Hongjie Zhang,et al."Toughened polypropylene with balanced rigidity. III. Compositions and mechanical properties".JOURNAL OF APPLIED POLYMER SCIENCE 78.8(2001):1345-1350.
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