Wet Laying Nonwoven Using Natural Cellulosic Fibers and Their Blends: Process and Technical Applications. A Review

Hemamalini, T.; Dev, V. R. Giri

doi:10.1080/15440478.2019.1701606

Cited by 20 publications

(15 citation statements)

References 43 publications

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“…The WL process is promising in terms of fiber length retention. Hemamalini and Dev [15] discussed that WL is an emerging technique to produce nonwovens using short natural cellulosic fibers and synthetic fibers and their blends. The steps involved in wet laying are dispersion, deposition and consolidation.…”

Section: Literature Reviewmentioning

confidence: 99%

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

et al. 2022

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The interest in recycled carbon fiber (rCF) is growing rapidly and the supply chain for these materials is gradually being established. However, the processing routes, material intermediates and properties of rCF composites are less understood for designers to adopt them into practice. This paper provides a practical pathway for rCFs in conjunction with low cost and, for the most part, commodity thermoplastic resins, namely polyethylene (PE), polyamide 66 (PA66) and polyethylene terephthalate (PET). Industrially relevant wet-laid (WL) process routes have been adopted to produce mats using two variants of WL mats, namely (a) high speed wet-laid inclined wire to produce broad good ‘roll’ forms and (b) 3DEPTM process patented by Materials Innovation Technologies (MIT)-recycled carbon fiber (RCF), now Carbon Conversions, which involves mixing fibers and water and depositing the fibers on a water-immersed mold. These are referred to as ‘sheet’ forms. The produced mats were evaluated for their processing into composites as ‘fully consolidated mats’ and ‘non-consolidated’ as-produced mats. Comprehensive mechanical data in terms of tensile strength, tensile modulus and impact toughness for rCF C/PE, C/PA66 and C/PET are presented. The work is of high value to sustainable composite designers and modelers.

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Section: Literature Reviewmentioning

confidence: 99%

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

et al. 2022

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“…The formed square nonwoven fabric of 25 cm by 25 cm was dried at 105 C for 12 h in an oven to remove moisture. The final dried fabrics had a basis weight of approximately 400 g=m 2 .…”

Section: Composite Preparationmentioning

confidence: 99%

“…1 When the wet-laid process is applied in FRP manufacturing, raw fiber materials are first dispersed in water, and subsequent drainage and moisture removal result in the preform. 2 Mainly, two types of preform are generated: preform only consisting of enhancement fibers, denoted as a pure nonwoven preform; and preform consisting of enhancement fibers and thermoplastic fibers, denoted as a hybrid nonwoven preform, as shown in Figure 1. The preform will be infiltrated by liquid or molten plastics by film stacking 3 or resin transfer molding 4 for pure nonwoven preform or heat-press molding for hybrid nonwoven preform to form FRP.…”

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confidence: 99%

Optimization of process parameters of recycled carbon fiber-reinforced thermoplastic prepared by the wet-laid hybrid nonwoven process

Yan

Wang

Yang

et al. 2021

Textile Research Journal

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The wet-laid hybrid nonwoven process can produce affordable carbon fiber-reinforced thermoplastic (CFRTP) because of its process simplicity, which can promote the application of CFRTP products in automobile weight reduction. The wet-laid hybrid nonwoven process involves two procedures, mainly: prepare preforms by a papermaking-like process and heat-molding compression. The parameters of heat-molding compression affect the quality of CFRTP directly, but there are not enough researches focusing on the effects of heat-molding compression parameters. This study aims to optimize the wet-laid hybrid nonwoven process to prepare recycled CFRTP. A proper carbon fiber content was determined firstly. Then, response surface methodology was used to optimize the heat-molding compression parameters. The effects of fiber length on composite properties were also investigated. The results showed that the fiber content of 30 wt% was the most suitable. The optimized heat-molding conditions were temperature, pressure, and time of 190°C, 2 MPa, and 10 min, respectively, leading to the lowest void content of 0.9%. CFRTP comprising carbon fibers with a length of 6 mm had the best properties, with the tensile strength of 59.34 MPa and flexural strength of 145.91 MPa.

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“…In general, polymer nonwovens can be fabricated via different top-down methods such as melt blowing, electrospinning, − spun-bonding, and air-laid or wet-laid processes. − The wet-laid process can be described as nonwoven formation by the filtration of a fiber dispersion in a solvent. , In particular, short fibers are highly beneficial for the wet-laid process because they allow for the preparation of a stable and homogeneous polymer fiber dispersion because of the absence of entanglements. This is a requirement for the sheet-forming process, which enables the preparation of compact sheets with high robustness and quality in comparison to nonwovens based on regular electrospun fibers.…”

Section: Introductionmentioning

confidence: 99%

Stable Mesoscale Nonwovens of Electrospun Polyacrylonitrile and Interpenetrating Supramolecular 1,3,5-Benzenetrisamide Fibers as Efficient Carriers for Gold Nanoparticles

Drummer

Chen

Kreger

et al. 2021

ACS Appl. Mater. Interfaces

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The immobilization of metal nanoparticles without agglomeration and leaching within composite nonwovens is often challenging and of great importance, for example, for catalytic applications. In this study, we prepared composite nonwovens based on electrospun polyacrylonitrile (PAN) short fibers and supramolecular terpyridine-functionalized benzene-1,3,5-tricarboxamide (BTA1) nanofibers by a sheet-forming wet-laid process. The formation of an interpenetrating and entangled network of supramolecular BTA1 nanofibers and PAN short fibers results in mechanically stable mesoscale nonwovens. Because of the peripheral terpyridine substituents of the BTA1, nonaggregated gold nanoparticles (AuNPs) could be immobilized efficiently in the composite nonwovens. The functionality of the resulting AuNPs-loaded composite nonwovens was verified by catalytic reduction of 4-nitrophenol to 4-aminophenol as a standard model reaction. The AuNPs-loaded PAN/BTA1 composite nonwovens showed high catalytic activity, reusability, and excellent stability.

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Wet Laying Nonwoven Using Natural Cellulosic Fibers and Their Blends: Process and Technical Applications. A Review

Cited by 20 publications

References 43 publications

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

Mechanical Response and Processability of Wet-Laid Recycled Carbon Fiber PE, PA66 and PET Thermoplastic Composites

Optimization of process parameters of recycled carbon fiber-reinforced thermoplastic prepared by the wet-laid hybrid nonwoven process

Stable Mesoscale Nonwovens of Electrospun Polyacrylonitrile and Interpenetrating Supramolecular 1,3,5-Benzenetrisamide Fibers as Efficient Carriers for Gold Nanoparticles

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