Carbon Nanotube-Based UV-Curable Nanocomposite Coatings

Abstract

This chapter covers the preparation and properties of ultraviolet (UV)-curable nanocomposite containing carbon nanotubes as fillers. UV-curing technology is of particular interest due to its unique properties such as rapid curing process and solvent-free formulation. Alongside with the advantages of utilizing this curing method, carbon nanotubes undergo benefits including high aspect ratio, high transparency, and good mechanical properties. Carbon nanotubes (CNTs) are hollow cylindrical shaped configuration; consist of one, two, or more walls with an interlayer of non-covalent van der Waals force acting among the carbon atoms of various walls. Besides influencing the UV curing process, the CNTs loaded UV-curable nanocomposites sustain modified surface, thermal, mechanical, physical, and conductive properties which are discussed in this chapter. The health and safety concerns of using these classes of nanocomposite are further discussed.

Piezoresistive behavior of DLP 3D printed CNT/polymer nanocomposites under monotonic and cyclic loading

“…However, the MWCNT/polymer nanocomposites showed curing enthalpy peaks in the range of 190-220 °C, with the curing enthalpy increasing with the CNT concentration (see Table 2). This is an indication of incomplete curing of the 3D printed nanocomposite specimens due to the UV shielding effect of the nanofillers, as reported in previous studies [41,44,45]. The UV shielding effect of MWCNTs refers to their ability to absorb UV radiation because they have energy levels that match the energy of UV photons.…”

Knit Architecture for Water-Actuating Woolen Knitwear and Its Personalized Thermal Management

“…Water vapor transmission properties of the fabrics were conducted according to ASTM E96-80B, as illustrated in Figure S2 (Supporting Information). The WVTR was performed at different environmental temperatures (20,25,30,35, and 40 °C) with constant humidity of 80% RH. Likewise, WVTR with various relative humidities (20, 40, 60, and 80%) with a constant temperature of 25 °C was tested.…”

“…In brief, by using more versatile bicomponent structure techniques, a triacetate-cellulose side-by-side structure along with carbon nanotube (CNT) coating fibers has been developed that can successfully modulate IR heat transmission through the fabricated textiles . However, the use of CNT in textiles could lead to serious health hazards via organic human cell damage . Furthermore, a bilayer knitted structure consisting of hydrophobic porous polyester fibers and hydrophilic cellulose fibers has been fabricated that can allow for higher water vapor and IR transmission with a change in environmental conditions .…”

“…18 However, the use of CNT in textiles could lead to serious health hazards via organic human cell damage. 30 of hydrophobic porous polyester fibers and hydrophilic cellulose fibers has been fabricated that can allow for higher water vapor and IR transmission with a change in environmental conditions. 31 Besides these, it has been noted that the cooling performance of this kind of fabric is 105% higher than that of conventional cotton textiles, which makes it ideal for manufacturing thermoregulatory apparel.…”

The Synergistic Properties and Gas Sensing Performance of Functionalized Graphene-Based Sensors

“…Graphene is described as a flat one-atom thick monolayer of sp 2 -hybridized carbon atoms that are tightly stacked into a two-dimensional honeycomb lattice [14]. Its semimetal nature allows charge carriers to behave like Dirac fermions which results in extraordinary effects such as improved intrinsic mobility of up to ~200,000 cm 2 •V −1 •s −1 , with unique properties such as a higher thermal conductivity of ~5000 W•m −1 •k −1 , high mechanical stiffness of ~1060 GPa, an excellent optical transmittance of ~97.7%, and a large specific surface area of 2630 m 2 •g −1 [15].…”