Gel spinning of UHMWPE fibers with polybutene as a new spin solvent

Fang, Xudong; Wyatt, Tom; Hong, Yifeng; Yao, Donggang

doi:10.1002/pen.24296

Cited by 33 publications

(34 citation statements)

References 36 publications

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“…Since the early 1970s, various methods have been investigated for the manufacture of UHMWPE fibers, and the gel spinning method has been widely used in the production of high-strength and high-modulus industrial UHMWPE fibers. Currently, the tensile strength of UHMWPE fibers prepared by the gel spinning method can reach more than 4 GPa [1,2]. The excellent tensile strength and Young's modulus of gel spinning fibers are due to its internal regular shish-kebab structure [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A Study of the Mechanical Behavior and Crystal Structure of UHMWPE/HDPE Blend Fibers Prepared by Melt Spinning

Wang

Liu

Xue

et al. 2018

Journal of Engineered Fibers and Fabrics

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Ultrahigh molecular weight polyethylene (UHMWPE) and high-density polyethylene (HDPE) blend fibers with the highest tensile strength of 1.13 GPa were prepared by a melt spinning process. The crystal structure and mechanical behavior of the as-spun filaments and fibers were studied by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), atomic force microscope (AFM), X-ray diffraction (XRD), sound velocity orientation test and tensile strength test. The results suggested that the degree of molecular chain orientation, crystallinity and mechanical properties of the blend fibers were improved by blending with the low melt flow index (MFI) HDPE. The crystal grains of low MFI HDPE blend fibers that were formed by more highly oriented molecular chains could be stretched more effectively in the drawing direction, and the improved mechanical properties were due to the more regular and compact crystal structure.

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Section: Introductionmentioning

confidence: 99%

A Study of the Mechanical Behavior and Crystal Structure of UHMWPE/HDPE Blend Fibers Prepared by Melt Spinning

Wang

Liu

Xue

et al. 2018

Journal of Engineered Fibers and Fabrics

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“…The η * increases gradually and becomes more dependence on the frequency when the fraction of UHMWPE is increased. It can be registered with the increased molecular weight of the matrix . Moreover, the slope of the curves (i.e., η * vs. ω) is increased, indicating that the shear thinning phenomenon of the blends becomes apparent.…”

Section: Resultsmentioning

confidence: 92%

Effect of entangled state of nascent UHMWPE on structural and mechanical properties of HDPE/UHMWPE blends

Yang

Liu

Zhang

et al. 2017

J of Applied Polymer Sci

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In this study, a synthesized ultra-high molecular weight polyethylene (UHMWPE) with a less entangled state and a commercial UHMWPE with a highly entangled state were blended with high-density polyethylene (HDPE) by melt blending, respectively. Rheology, 2D small-angle X-ray scattering (2D-SAXS), differential scanning calorimetry (DSC), and tensile test were used to study the relationship between the microstructure and the mechanical properties of blends. It was demonstrated that the UHMWPE with the less entangled state was easy to be oriented at a given flow. More mechanical networks were achieved among the HDPE matrix and the UHMWPE chains due to the fewer entanglements of synthesized UHMWPE, improving the melting recovery of blends. Furthermore, notably oriented structures (shish-kebabs) with increased long-periods were made in the blends of weakly entangled UHMWPE and HDPE. The tensile strength of this blend was thus enhanced, i.e., the tensile strength raised for neat HDPE from 45.7 to 83.1 MPa for HDPE/UHMWPE blends containing 10 wt % of less entangled UHMWPE. However, the phase separation of blends was characterized when more weakly entangled UHMWPE was incorporated.

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“…It is required to be dissolved in a solvent before it passes through the extruder and is spun into fibers. 1,2,4-trichlorobenzene is commonly used as a solvent for the dissolution of this polymer 55 . In a post-extrusion step, an extraction solvent, n-hexane is used to remove the solvent (1,2,4-trichlorobenzene) from the polymer gel fibers.…”

Section: 24-trichlorobenzene Used In a Polymer-spinning Processmentioning

confidence: 99%

Systematic Model-Based Methodology for Substitution of Hazardous Chemicals

Jhamb

Gani

Kontogeorgis

2019

ACS Sustainable Chem. Eng.

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Driven by obligations to comply with the regulations and various public policies, substitution of chemicals with safer counterparts is now being widely practiced by industry. In this paper, the development of a systematic model-based methodology for chemical substitution, is described. The methodology considers different problem definitions depending on the objective for substitution. A general framework, which includes the algorithm steps of the methodology, corresponding data-flow, associated property models, databases and modeling tools for generating and evaluating the substitute candidates, is presented. The application of the developed methodology is highlighted through four case studies on substitution of 'chemicals of concern' used in chemical-based products or in processes and their operation. The alternative chemicals are found by matching the desired properties related to the physicochemical nature, function and performance of the chemical being substituted, while avoiding its undesired, environmental, health and safety-related properties.The objective of developing this methodology for chemical substitution is to quickly and reliably identify the promising candidates through model-based techniques, check their economic feasibility and only then proceed to conduct experiments in order to verify their compatibility and applicability.In this way, the experimental resources are used only for verification rather than for an inefficient, trial-and-error and sometimes time-consuming and expensive search for substitute candidates.

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Gel spinning of UHMWPE fibers with polybutene as a new spin solvent

Cited by 33 publications

References 36 publications

A Study of the Mechanical Behavior and Crystal Structure of UHMWPE/HDPE Blend Fibers Prepared by Melt Spinning

A Study of the Mechanical Behavior and Crystal Structure of UHMWPE/HDPE Blend Fibers Prepared by Melt Spinning

Effect of entangled state of nascent UHMWPE on structural and mechanical properties of HDPE/UHMWPE blends

Systematic Model-Based Methodology for Substitution of Hazardous Chemicals

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