Abrasion resistance of thermally bonded 3D nonwoven fabrics

Wang, X.Y.; Gong, Rong; Dong, Zhibao; Porat, I.

doi:10.1016/j.wear.2006.06.002

Cited by 34 publications

(27 citation statements)

References 2 publications

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“…[4,5] Recently, a pilot process to produce three-dimensional (3D) nonwoven products directly from staple fibres has been developed in The University of Manchester. [4][5][6][7][8] In this process, the fibres are formed into a 3D webs using airlaying and the 3D webs are bonded using through-air thermal bonding. It has been reported that the most suitable fibres for this process are poly(propylene)/polyester (PP/ PET) bi-component fibres.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that the most suitable fibres for this process are poly(propylene)/polyester (PP/ PET) bi-component fibres. [4][5][6][7][8] During the thermal bonding process, the fibre webs are subjected to the temperature above or close to the melting point of the PP sheath of the PP/PET bi-component fibre in the bonding chamber. Earlier studies [9,10] have shown that the polymer structure may be changed dramatically when they are subjected to heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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Morphology and Structure of Constituent Fibres in Thermally Bonded Nonwovens

Wang¹,

Gong²

2006

Macro Materials & Eng

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Summary: A new process has been developed to produce three‐dimensional nonwovens directly from staple fibres. In order to establish suitable windows of the process parameters to achieve high‐quality nonwoven products, the effects of thermal bonding temperature, dwell time and mould material on the morphology and structure of the fibre have been investigated using PP/PET bi‐component fibres. It was evident from both scanning electron microscope images and Raman spectra that thermal‐induced shrinkage of the PP sheath fibre occurred in the thermal bonding process, leading to deformation and cracking of the PP sheath and exposure of the PET core. X‐ray diffraction results revealed crystal imperfection and/or less ordered polymer chains, more γ‐form and thermal contraction of the crystal lattice for the PP sheath fibre, while birefringence measurements indicated that both the birefringence and the orientation factor for the PP fibre decreased after the thermal bonding process. The degrees of the thermal‐induced shrinkage increased, and the crystallinity, birefringence and orientation factor of the PP sheath fibre decreased with increasing thermal bonding temperature, dwell time and thermal conductivity of the mould material. All these can be attributed to the different levels of modification of chemical composition caused by thermal oxidative degradation and thermal‐induced relaxation of the orientation during the thermal bonding process.Changes of morphology and crystalline features of PP/PET fibre after thermal bonding process.imageChanges of morphology and crystalline features of PP/PET fibre after thermal bonding process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphology and Structure of Constituent Fibres in Thermally Bonded Nonwovens

Wang¹,

Gong²

2006

Macro Materials & Eng

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“…Similar to the usual air-laying process, this process is applicable to a wide range of fibres and fibre specifications. More detailed evaluation of the products from this process are reported in a series of reports (Wang and Gong, 2006a,b;Wang et al, 2006Wang et al, , 2007. Rigid 3D-shaped composites can also be produced using preforms produced by this process (Alimuzzaman et al, 2013).…”

Section: Mouldmentioning

confidence: 99%

Developments in 3D nonwovens

Gong

2015

Advances in 3D Textiles

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“…With the modified experimental set-up, it was possible to abrade larger areas of OS fabrics. The OS fabrics were abraded under a known pressure of 9 kPa and with the translational movement of the abrader tracing a Lissajous figure [ 16]. The rotational speed of the top moving plate was set at 47.5 revolutions per min with a maximum stroke length of 60.5 mm.…”

Section: Abrasion and Wearmentioning

confidence: 99%

Accelerated Weathering of Firefighter Protective Clothing Containing Melamine Fiber Blends

Nazaré¹,

Flynn²,

Davis³

et al. 2012

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In this study, the mechanical properties critical to the protective performance of firefighter turnout gear were evaluated in environmentally stressed outer shell (OS) fabrics containing melamine fiber blends. Environmental stress factors that affect the durability of turnout gear include temperature, ultraviolet (UV) radiation, moisture, abrasion, and laundering. The effect of fiber blend, fabric construction, and finishing processes including water repellent coatings and pigmented melamine-containing OS fabrics were also studied. Melamine-containing OS fabrics show comparable thermal protective performance and have superior tear resistance when compared to the traditionally used polyaramid blends.This study reveals that the thermal protective protection (TPP) rating of fabric assemblies incorporating environmentally stressed OS fabrics containing melamine fiber blends is well above the NFPA minimum TPP requirement of 35 Cal/cm 2 . However, the tear strength (measured using ASTM D 5587 standard test method ) of all melamine-containing OS fabrics exposed to environmental stresses was observed to have significantly deteriorated, and most OS fabrics, depending on fiber blend and fabric structure, would fail to meet requirements of NFPA 1971 standard. The study thus suggests that environmental stressing has a more detrimental impact on the tear strength than the thermal protective performance of OS fabrics. Deterioration in tear strength of all UV exposed OS fabrics is largely due to photodegradation of constituent fibers. Changes in tear strength of OS fabrics subjected to thermal exposures and laundering is cumulative effect of loss in tensile strength of single yarns and dimensional stability of the fabric itself. Furthermore, finishing treatments affect performance properties of fabric by increasing fiber packing factor in yarn, changing yarn crimp and yarn spacing thereby making dimensional changes to the fabric. Surface coatings alter tear resistance of fabric by influencing yarn slippage and fabric rigidity. Fabrics dyed with black and dark blue dyes cause less UV degradation of fibers than bright yellow and brown dyes.

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Abrasion resistance of thermally bonded 3D nonwoven fabrics

Cited by 34 publications

References 2 publications

Morphology and Structure of Constituent Fibres in Thermally Bonded Nonwovens

Morphology and Structure of Constituent Fibres in Thermally Bonded Nonwovens

Developments in 3D nonwovens

Accelerated Weathering of Firefighter Protective Clothing Containing Melamine Fiber Blends

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