Abstract
We prepared a horseshoe-pattern type electrical heating textile that was coated with high graphene nanoplatelet (GNP) content (32 wt% to 64 wt%) of graphene nanoplatelet/poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) composite. Silver-coated conductive yarn is used as electrode in the sample to improve its flexibility and applicability as wearable textile. These graphene nanoplatelet/PVDF-HFP coated samples with various high-contents of graphene were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), sheet resistance analysis, and electrical heating performance analysis. Graphene nanoplatelet/PVDF-HFP coated cotton fabric improved the crystallinity and thermal stability with increasing thw high-content of GNP. With an increasing of the high-content of graphene nanoplatelet in the PVDF-HFP composite solution, the sheet resistance of samples tended to gradually decrease. That of, 64 wt% graphene nanoplatelet/PVDF-HFP composite coated sample (64 GR/cotton) was 44 Ω/sq. The electrical heating performance of graphene nanoplatelet/PVDF-HFP composite coated cotton fabric was improved with increasing the high-content of graphene nanoplatelet. When 5 V was applied to 64 GR/cotton, its surface temperature has been indicated to be about 48 °C and it could be used at a low voltage (<10 V). Thus, a horseshoe-pattern type electrical heating textile that is coated by high content of graphene nanoplatelet/PVDF-HFP composite solution sewn with silver-coated conductive yarn is expected to be applied to glove, shoes, jacket, and so on to improve its wearability and applicability.
Highlights
Electronic textiles (E-textiles) are emerging and gradually being integrated into our homes and daily life due to their potential applications in conductive fabrics, flexible sensors, and wearable heaters [1,2]
A horseshoe-pattern type electrical heating textile that is coated by high content of graphene nanoplatelet/polyvinylidene fluoride (PVDF)-HFP composite solution sewn with silver-coated conductive yarn is expected to be applied to glove, shoes, jacket, and so on to improve its wearability and applicability
Morphology of GR/cotton coated with various high-content of graphene nanoplatelets
Summary
Electronic textiles (E-textiles) are emerging and gradually being integrated into our homes and daily life due to their potential applications in conductive fabrics, flexible sensors, and wearable heaters [1,2]. Carbon-based nanomaterials, such as carbon nanotubes (CNT), carbon nanofiber (CNF), and graphene are used to satisfy the need for mechanically flexible, highly conductive, wearable and lightweight material due to their unique mechanical property and electrical and thermal conductivities [3,4]. They are used as conductive fillers in the polymer-based composites. Among the carbon-based nanomaterials, the graphene family can be classified as single layer graphene, few layer graphene (2–10 layers), and graphite nano- and micro-platelets by the morphological characteristics [5].
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