Copper Lithium Silicate/ZrO2 Nanoparticles-Coated Kevlar for Improving UV-Vis Absorbance/ Protection Properties


Kevlar as super strength polyamide textile fabric treated through five concentration of (15 Cu2O3: 5 Li2O: (80-x) SiO2: (1–5) ZrO2) nano-gel which successfully prepared through sol gel method at room temperature for using as a coating layers for Kevlar. The physical/chemical properties of treated and un-treated Kevlar were examined through FTIR, XRD, SEM and UV- absorbance and reflectance. The treatment efficient on Ultraviolet Protection Factor (UPF) and Mechanical properties for treated and un-treated Kevlar was also examined. Optical results clarified that the coating layer copper lithium silicate/zirconium (CLS/ZrO2) NPs on Kevlar surface produces a remarkable contribution to its UV-Vis absorbance properties and creates high energy is absorbed from the UV- light. FTIRimages enhancement in comparison with Kevlar, while new peaks are presented Si-O-Si and its intensity increasing with ZrO2 doping percent at FTIR charts. SEM showed a homogeneous dispersity of CLS/ZRO2NPson Kevlar surface appears as this layer at low concentrations. Kevlar showed ascending UPF values with increasing ZrO2 percent inside CLS/ZrO2NPs. Mechanical properties behaviors directly proportional to early percent’s of CLS/ZrO2NPs doping and then decreases, which means it has not monotonic behavior. The obtained results will assist textile developers to use the new modified Kevlar at different applications as protective clothing.

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Correspondence to Amany M. El Nahrawy.

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El Nahrawy, A.M., Montaser, A.S., Abou Hammad, A.B. et al. Copper Lithium Silicate/ZrO2 Nanoparticles-Coated Kevlar for Improving UV-Vis Absorbance/ Protection Properties. Silicon 12, 1743–1750 (2020).

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  • Kevlar
  • Copper lithium silicate (CLS)
  • Textile
  • Ultraviolet protection factor (UPF)
  • Mechanical