Fracture studies of poly(propylene)/elastomer blend with β-form nucleating agent

Bai, Hongwei; Wang, Yong; Zhang, Danli; Xiao, Chengquan; Song, Bo; Li, Yanli; Han, Liang

doi:10.1016/j.msea.2009.02.051

Cited by 14 publications

(6 citation statements)

References 31 publications

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“…At the same time, it is not practical to blend a large amount of β-NA into PP matrix in industry due to its high cost. It has been reported that with the assistance of economical POE additives, the combined effect between β-NA and elastomer can further improve toughness of PP/β-NA composites but inevitably weaken material rigidity [17][18][19]. The above results show that the optimal content of TMB-5 in PP is around 0.05 wt.%.…”

Section: The Combined Effect Of Poe and β-Na On Crystallization Behavior And Morphologymentioning

confidence: 68%

“…In the past decades, a considerable amount of research has been published on the superior way to toughen polypropylene products. Among those methods, most conspicuously, a combined effect between β-nucleating agent and elastomer has shown great potential in the improvement of fracture toughness even with a small amount of β-nucleating agent [16][17][18]. Cao et al [19] found that the PP/POE blends exhibit a brittle-ductile transition with increasing polyolefin elastomer (POE) content, while no obvious brittle-ductile Xiehuai Luo and Pingping Wu contributed equally to this work and should be considered co-first authors.…”

Section: Introductionmentioning

confidence: 99%

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Coupling effects of toughening modification and solid die-drawing process on the morphology and mechanical properties of PP/TMB-5 composites with POE

Luo

Lü

et al. 2021

J Polym Res

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A traditional strategy for toughening modification of polypropylene (PP) is to utilize the excellent impact resistance of β-PP by introducing β-phase nucleating agent (β-NA) into PP matrix. In this work, highly oriented PP/TMB-5 composites and PP/POE/TMB-5 composites were prepared via solid die-drawing (SDD) at 135 °C. The results show that after SDD, on the existence of β-α phase transformation in processing, the toughness of PP/TMB-5 composites was though improved but still limited. Then, introduced polyolefin elastomer (POE) particles into PP/TMB-5 matrix, β-α phase transformation was suppressed, and the toughness were further improved. The effect of grain refinement caused by β-NA were further enhanced by drawing stress and meantime abundant microsized voids generated between oriented lamellae, which were all beneficial to its toughness. The oriented structure inherently strengthened materials rigidity. Thus, the tensile strength and impact strength of PP/POE/TMB-5 composites after SDD were 145.45 MPa and 30.6 kJ/m 2 , 4.8 times and 3.8 times higher than pure PP, respectively. Keywords β-α transformation • Reinforcement and toughening • PP/POE/TMB-5 composites • Solid die drawing * Qi Yang

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Section: The Combined Effect Of Poe and β-Na On Crystallization Behavior And Morphologymentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Coupling effects of toughening modification and solid die-drawing process on the morphology and mechanical properties of PP/TMB-5 composites with POE

Luo

Lü

et al. 2021

J Polym Res

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“…Since composites are extremely notch sensitive, the SENT test configuration is commonly used for measuring their mode I fracture resistance [23][24][25][26][27] . The compact tension test is another widely used test method for investigating mode I fracture properties of fibre reinforced composites 28 .…”

Section: Introductionmentioning

confidence: 99%

Fracture Toughness of Laminated Composites – A Non-Linear Analysis

Rizov

Mladensky²

2012

Polymers and Polymer Composites

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Non-linear fracture behaviour of laminated composite materials under mode I (crack opening) loading conditions was studied experimentally and theoretically. For this purpose, single edge notched tension (SENT) tests were carried-out using displacement-controlled loading under room temperature dry conditions. It was found that the load-displacement diagram had non-linear character prior to onset of macroscopic crack propagation. Thus, the main objective of this paper was to study the fracture properties using non-linear fracture mechanics. A two-dimensional finite element model was set-up in order to analyze the non-linear response of the SENT test specimen. Non-linear deformation due to damage was simulated using the Tsai-Hill failure criterion. The failure analysis revealed that the damage was localized in the vicinity of the crack tip. The fracture response was characterized using a J-integral. It was shown that a realistic appraisal of the potential for crack growth should include the effects of non-linear material deformation. It was found that taking into account the non-linear deformation increased the fracture resistance. This finding was attributed to the increased strain energy dissipation due to the damage induced non-linear behaviour of the SENT test specimen.

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“…In our group, NA (␣-form NA and/or ␤-form NA) was introduced into PP/elastomer blends with different kinds of elastomers, such as ethylene-octene copolymer (POE) [33][34][35][36], ethylene-propylenediene monomer (EPDM) [37], and alpha-olefin copolymer [38]. Our results show that ␤-form NA and elastomer exhibit synergistic 0921-5093/$ -see front matter © 2010 Elsevier B.V. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

Fracture resistance improvement of polypropylene by joint action of core–shell particles and nucleating agent

Yang

Han

Ding

et al. 2011

Materials Science and Engineering: A

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Fracture studies of poly(propylene)/elastomer blend with β-form nucleating agent

Cited by 14 publications

References 31 publications

Coupling effects of toughening modification and solid die-drawing process on the morphology and mechanical properties of PP/TMB-5 composites with POE

Coupling effects of toughening modification and solid die-drawing process on the morphology and mechanical properties of PP/TMB-5 composites with POE

Fracture Toughness of Laminated Composites – A Non-Linear Analysis

Fracture resistance improvement of polypropylene by joint action of core–shell particles and nucleating agent

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