Technological characterization of PE/EVA blends for foam injection molding

Spina, Roberto

doi:10.1016/j.matdes.2015.06.128

Cited by 37 publications

(13 citation statements)

References 24 publications

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“…The specific strength [ 1 , 2 , 3 , 4 , 5 ] and dimensional stability of foaming materials [ 6 ] are directly related to cell density, which is determined by the number of cells present during the foaming process. Therefore, the quality of foaming materials can be effectively improved by regulating nucleation in the foaming process [ 7 , 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Organic Cage Nucleating Agent Structure on Nucleating Efficiency and the Structure-Property Relationship

Zhou

Gong

2020

Polymers

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Three types of organic cage compounds, namely, cucurbit[6]uril (Q[6]), hemicucurbit[6]uril (HQ[6]), and β-cyclodextrin (BC), with different cavity structures as heterogeneous nucleation agents were selected for a polypropylene (PP) foaming injection molding process. The experimental results showed that Q[6] with a “natural” cavity structure possessed the best nucleation efficiency of these three cage compounds. The nucleation mechanism of organic cage compounds was explored through classical nucleation theory, molecular structure, and in situ visual injection molding analysis.

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Section: Introductionmentioning

confidence: 99%

Effect of Organic Cage Nucleating Agent Structure on Nucleating Efficiency and the Structure-Property Relationship

Zhou

Gong

2020

Polymers

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“…Through the above literatures, it could be found that the investigations about CCS were mainly focused on amorphous polymer and polymer with low crystallinity. The research on high-density polyethylene (HDPE) foams with high crystallinity was concentrated on MCS [15][16][17][18][19], while few studies on HDPE foams with CCS were reported. Compared with amorphous polymer and polymer with low crystallinity, HDPE possesses the lower degree of branching and the stronger crystallization ability, leading to narrower foaming processing window and lower foam ability of HDPE.…”

Section: Introductionmentioning

confidence: 99%

A cooling and two-step depressurization foaming approach for the preparation of modified HDPE foam with complex cellular structure

Wang

Ding

Zhao

et al. 2017

The Journal of Supercritical Fluids

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This article reports on the fabrication of modified high-density polyethylene (HDPE) foams with complex cellular structure (CCS) using supercritical CO 2 as a physical blowing agent by a cooling and two-step depressurization method. HDPE was modified by dicumyl peroxide (DCP) and carbon nanotubes (CNTs) to improve its viscoelasticity and foaming behavior. The gel content test demonstrated that the cross-linking structure formed in the modified HDPE samples. Compared with that of neat HDPE, the viscoelasticity of modified HDPE was improved largely, which was characterized by rotational rheometer and torque rheometer. The introduction of DCP and CNTs had a slightly effect on the thermal behaviors of HDPE. The foaming properties of various HDPE samples showed that the cross-linking structure caused by DCP improved the

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“…However, a slight decrease in crystallization temperature and an increase in melting temperature may suggest that the structure of the extrudate contained larger crystallites of PE than those in pure PE. The crystallinity degree of the extrudate visibly decreased in comparison with pure polyethylene [88], especially for the extrudate obtained with the Maddock tip. Such a large addition of a biofiller, which due to its hydrophilic nature is not fully compatible with hydrophobic PE, causes the separation of polymer chains, reduces their mobility, and hinders the crystallization of PE.…”

Section: Thermal Propertiesmentioning

confidence: 90%

Influence of the Design Solutions of Extruder Screw Mixing Tip on Selected Properties of Wheat Bran-Polyethylene Biocomposite

Sasimowski,

Majewski,

Grochowicz

2019

Polymers

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The study investigated the impact of the extruder screw design solution—the intensive mixing tip used—on the course of the extrusion process and the properties of the obtained biocomposite extrudate. A lignocellulosic wheat bran biocomposite based on a low-density polyethylene matrix was extruded. Three mixing tips of the screw were used interchangeably: apineapple tip, a cut rings tip, and a Maddock tip. The experimental tests carried out included the production of an extrudate with a mass content of bran altered within the range from 10% to 50%. Processing properties such as the melt flow rate (MFR) and mass flow rate of the extruded biocomposite were determined. Selected physical, mechanical, and structural properties of the biocomposite extrudate obtained with the use of the three tested mixing tips at five bran contents were tested.

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Technological characterization of PE/EVA blends for foam injection molding

Cited by 37 publications

References 24 publications

Effect of Organic Cage Nucleating Agent Structure on Nucleating Efficiency and the Structure-Property Relationship

Effect of Organic Cage Nucleating Agent Structure on Nucleating Efficiency and the Structure-Property Relationship

A cooling and two-step depressurization foaming approach for the preparation of modified HDPE foam with complex cellular structure

Influence of the Design Solutions of Extruder Screw Mixing Tip on Selected Properties of Wheat Bran-Polyethylene Biocomposite

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