Composite of aramid fibre (poly-m-phenylene isophthalamide)-thermoplastic elastomers (SEBS): enhancement of tensile properties by maleated-SEBS compatibiliser

Amornsakchai, Taweechai; Sinpatanapan, Budsaporn; Bualek-Limcharoen, Sauvarop; Meesiri, Wiriya

doi:10.1016/s0032-3861(98)00524-2

Cited by 46 publications

(44 citation statements)

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“…22,51,53,58,[59][60][61][62][63][64][65][66] The SEM images a) and b) in Figure 2.17 show the fracture surface morphology of aramid fibres in an EPDM and NR compound including a bonding system. 49 The smooth fracture surface and de-bonding of the fibres from the matrix show weak interfacial interaction between the fibres and the matrix. However, when the pretreatment system with RFL is present, the morphology of the fracture surface is changed with fracture occurring in more than one plane between the fibres.…”

Section: -20mentioning

confidence: 99%

“…49 The hydrolysed-aramid fibres were then mixed with a matrix of maleic anhydride grafted SEBS (MA-g-SEBS). The use of a reactive compatibilizer like maleic anhydride grafted polymer with a non-polar part having a structure similar to the polymer matrix was also used to promote fibre-matrix interactions in aramid fibre-reinforced composites.…”

Section: -17mentioning

confidence: 99%

“…However, this method produces a very poor interfacial interaction effect, because the hydrogen atoms in the imide groups are strongly inactivated by the conjugation effect among imide groups, carbonyl groups as well as by the steric hindrance effect of phenyl rings. 49 A new chemical graft reaction based on a Friedel-Crafts reaction was carried out by Liu et al 49 to break out of the shielding and steric hindrance effects of the phenyl ring by an electrophilic substitution reaction on the phenyl ring. Epoxy-chloropropane was used for the surface modification of aramid fibres under the addition of an aluminium tri-chloride catalyst and heating.…”

Section: -17mentioning

confidence: 99%

“…Once wetting occurs, there will be adhesive-substrate interaction and dispersion forces that occur will be sufficient to give strong bonds. However, the work done by Liu et al 49 needs further investigation to be applied in short aramid fibres-rubber interfacial interaction, because the Friedel-Crafts reaction which was used by Liu et al 49 was for improving interfacial bonding strength of long aramid fibres with epoxy resin and not for short aramid fibres. …”

mentioning

confidence: 99%

“…A new chemical graft reaction based on a Friedel-Crafts reaction was carried out by Liu et al 49 to break out of the shielding and steric hindrance effects of the phenyl ring by an electrophilic substitution reaction on the phenyl ring. Epoxy-chloropropane was used for the surface modification of aramid fibres under the addition of an aluminium tri-chloride catalyst and heating.…”

mentioning

confidence: 99%

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Short fibre-reinforced elastomeric composites, fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBR compound, to improve friction and wear properties

Vleugels¹

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S h o rt f i b r er e i n fo r c e d e lasto m e r i c co m po s i t e s fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBRcompound, to improve friction and wear properties. Nadia Vleugelsi Short fibre-reinforced elastomeric composites, fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBR compound, to improve friction and wear properties.Nadia Vleugels SummaryShort-cut fibre-reinforced rubber composites represent a class of materials which are extremely complicated. There are many factors involved in establishing their properties, ranging from the constituents, mixing and dispersion, orientation of the fibres, the degree of vulcanization, the degree of fibre-matrix interaction and the way in which the final articles are loaded. After reviewing pertinent literature in Chapter 2 -not exhaustive, because that was impossible owing to the excessive amount -none of the authors had addressed and compared all factors involved in their studies. A 'holistic' approach is therefore considered necessary to include all possible factors and their interactions. Otherwise, no significant progress in understanding can be expected.As far as the approach and rubber formulation components are concerned, an agreement was made with the steering committee for the present project to try to avoid, as much as possible, disturbing factors which were thought not to be of importance to the friction and wear study. In particular, this pertains to the following: the choice of the type of elastomer, the fibres, use of silane coupling agents in combination with epoxy-amine pretreated fibres, sulphur vulcanization and omission of reinforcing and/or non-reinforcing fillers like carbon black or silica. The choice of silane coupling agents was made based on the literature survey in Chapter 2 as -possibly -the most promising candidates for epoxy-amine pretreated aramid fibre-elastomer interaction. A second reason was the extensive basis of know-how belonging to the Elastomer Technology and Engineering Department, where this research was to be carried out, about the silane-coupling technology between silica and rubber.In Chapter 3 and from the aforementioned perspective, an initial screening is done on the influence of controllable and non-controllable (resulting from the choice of the first) factors on a short-cut aramid fibre-reinforced Styrene-Butadiene Rubber compound. Two types of 3 mm short-cut aramid fibres are investigated: an untreated, virgin fibre (VF) and a fibre treated with an adhesion-active epoxy-amine coating (EF). The fibres are added at a concentration of 5 parts per hundred of rubber (phr). The coupling agents selected are: Bis-(triethoxysilylpropyl)-disulphide (TESPD), S-3-(triethoxysilylpropyl)-octanethioate (NXT), Bis-(triethoxysilylpropyl)-tetrasulphide (TESPT) and a mercapto silane (Si 363). They are compared on an equimolar basis with regard to the amount of reactive ethoxy groups of TESPD. The Mooney viscosity, vulcan...

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Section: -20mentioning

confidence: 99%

Section: -17mentioning

confidence: 99%

Section: -17mentioning

confidence: 99%

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Short fibre-reinforced elastomeric composites, fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBR compound, to improve friction and wear properties

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Improvement of interfacial adhesion of poly(m-phenylene isophthalamide) short fiber-thermoplastic elastomer (SEBS) composites by N-alkylation on fiber surface

Chantaratcharoen

Sirisinha

Amornsakchai

et al. 1999

J. Appl. Polym. Sci.

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A composite of short-fiber, poly(m-phenylene isophthalamide), and thermoplastic elastomer styrene (ethylene-butylene) styrene (SEBS), was investigated. The fiber surface was modified by N-alkylation (heptylation and dodecylation) to improve their compatibility with a less polar SEBS matrix. Observation of fiber-surface morphology by SEM revealed surface roughness after N-alkylation. Nearly complete coating of the polymer matrix on the fiber was observed on a fractured surface of the composite, which is evidence for the improvement of fiber-matrix adhesion. It was found that the modulus of the composites grew with increasing fiber loading to approximately the same extent for both unmodified and modified fiber composites. Tensile strength of the modified fiber composites was found to improve significantly over that of the unmodified fiber composite. This suggests that the presence of the alkyl group on the fiber surface is responsible for an improvement of interfacial adhesion.

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Multifunctional Electronic Textiles by Direct 3D Printing of Stretchable Conductive Fibers

Wang

et al. 2023

Adv Elect Materials

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The integration of functional fibers into wearable devices by traditional methods is commonly completed in weaving. A new post‐weaving method of integrating fiber devices into textiles is needed to address the challenge of incorporating functional fiber into ready‐made garments without tearing down the clothing and re‐weaving. A 3D printing method to simultaneously fabricate and integrate highly stretchable conductive fiber into ready‐made garments with designed patterns is presented. The fabricated sheath–core fiber consists of a styrene–ethylene–butylene–styrene (SEBS) shell and a Ga–In–Sn alloy liquid metal core. The SEBS shell guarantees the high stretchability (up to 600%) and flexibility, while the liquid metal core offers a high conductivity maintained at large deformation. It is shown that sophisticated patterns, which have millimeter‐level‐resolution that are difficult to be integrated into textiles by weaving, and even more laborious to be incorporated into ready‐made garments, can now be easily modified and implemented into both textiles and ready‐made garments by a time‐saving and low‐cost 3D printing method. Utilizing the electrical characteristics of the fiber in pre‐designed patterns, on‐clothing soft electronics can be printed directly. A printed on‐clothing strain sensor, bending sensor, wireless charging coil, and a touch‐sensing network are demonstrated to show the potential applications in wearable electronics.

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Composite of aramid fibre (poly-m-phenylene isophthalamide)-thermoplastic elastomers (SEBS): enhancement of tensile properties by maleated-SEBS compatibiliser

Cited by 46 publications

References 14 publications

Short fibre-reinforced elastomeric composites, fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBR compound, to improve friction and wear properties

Short fibre-reinforced elastomeric composites, fundamental routes towards improvement of the interfacial interaction of short-cut aramid fibres in a SBR compound, to improve friction and wear properties

Improvement of interfacial adhesion of poly(m-phenylene isophthalamide) short fiber-thermoplastic elastomer (SEBS) composites by N-alkylation on fiber surface

Multifunctional Electronic Textiles by Direct 3D Printing of Stretchable Conductive Fibers

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