Correlations between the electric charging properties and the optically determined structure of non-woven fabrics

Teodorescu, Horia-Nicolai; Dăscălescu, Lucian; Hulea, Mircea; Plopeanu, M.

doi:10.1016/j.elstat.2013.03.011

Cited by 5 publications

(3 citation statements)

References 40 publications

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“…Nowadays, nonwoven fabrics manufactured from polymeric fibers are extensively applied for air and liquid filtration in the automotive field and industrial equipments due to their low cost and high efficiency [1]. Because of their good properties such as high porosity, large surface area, dust-free, low-cost, and easy processability, these fabrics can also be suitable for hygienic and medical use [2].…”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical behavior of innovative melt-blown fabrics based on polyamide nanocomposites

Dorigato

Brugnara

Giacomelli³

et al. 2014

Journal of Industrial Textiles

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A commercial organo-modified clay (OMC) was added to a polyamide 6 (PA6) matrix at various concentrations during the polymerization stage or by melt compounding in a twin-screw extruder, and the resulting pellets were used for the production of depth filters in the shape of cylindrical nonwoven webs through a melt-blown process. The processability of the investigated materials was significantly affected by nanofiller introduction. Differential scanning calorimetry revealed that OMCs play a nucleating effect on the crystallization of the polyamide matrix, with a remarkable increase in the crystallization temperature on cooling from the melt. Consequently, a parameter related to the filtering performances of the web, such as the pressure drop (ÁP) evaluated on cylindrical filters, decreased with the increase in die-to-collector distance in a more pronounced way for nanocomposite nonwovens. This behavior was related to the significant decrease of the connecting points in the networks due to the rapid cooling of the filaments on the collecting mandrel. Compressive mechanical tests evidenced how organoclay addition led to a remarkable increase of the rigidity of the web, when the data were compared at the same ÁP value, irrespectively from the preparation technique.

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Section: Introductionmentioning

confidence: 99%

Thermal and mechanical behavior of innovative melt-blown fabrics based on polyamide nanocomposites

Dorigato

Brugnara

Giacomelli³

et al. 2014

Journal of Industrial Textiles

View full text Add to dashboard Cite

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“…The charge density is replaced by the electrical potential in the actual measurements. The constant may include the effect of the angle between the vector of the main direction of anisotropy and the direction of the electrical charging of the material, as in the experiments reported in [1]. Results will be reported elsewhere.…”

Section: Discussionmentioning

confidence: 99%

“…In contrast with the direct electrostatic measurements, the optical, indirect method is fast and suitable to deploy on the production line. The investigation in [1] primarily addressed the density of the polymeric material in the fabric. We hypothesize that the anisotropy of the fiber arrangement in the fabric may also play a role in the prediction of the electrostatic charging properties, hence the interest in statistically characterizing the anisotropy.…”

Section: Introductionmentioning

confidence: 99%

Statistical characterization of images — Anisotropy

Teodorescu

Dăscălescu

2016

2016 International Conference on Applied Electronics (AE)

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The purposes of the paper are to contribute to the understanding of the notion of anisotropy of images and to expose details on a method for deriving global and local statistical features on materials, based on anisotropy. We introduce a definition of anisotropy related to the edges and improve measures of anisotropy. The images dealt with correspond mainly to non-woven fabrics based on polymeric fibers. A discussion of the applicative potential is included.

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Homogenization-based multiscale analysis for equivalent mechanical properties of nonwoven carbon-fiber fabric composites

Lee¹,

Choi

Jin³

et al. 2019

J Mech Sci Technol

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Correlations between the electric charging properties and the optically determined structure of non-woven fabrics

Cited by 5 publications

References 40 publications

Thermal and mechanical behavior of innovative melt-blown fabrics based on polyamide nanocomposites

Thermal and mechanical behavior of innovative melt-blown fabrics based on polyamide nanocomposites

Statistical characterization of images — Anisotropy

Homogenization-based multiscale analysis for equivalent mechanical properties of nonwoven carbon-fiber fabric composites

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