Polymer/transition metal inorganic salts nanocomposites are promising engineering materials in automotive, electronics, aerospace and smart wearables fields. However, the interfacial incompatibility always causes agglomeration and phase separation, constraining their further application. Inspired by inorganic oligomers' polymerization, nylon/nickel phosphate oligomer (NPO) nanocomposite (ENCC) was prepared via hydrogen bond crosslinking method. Due to the formation of hydrogen bonds between PO 4 3− end groups of NPO with an average diameter of 6.5 ± 1.2 nm and NH groups on the nylon molecular chain, the phase compatibility is greatly improved. Hence, NPO was uniformly nano-dispersed and had no obvious agglomerate in ENCC, inducing an invisible phase interface at nano-micro scale. Nylon/nickel phosphate oligomer showed an excellent reinforcing effect on nylon, the tensile strength and elongation of ENCC reached 28 ± 0.8 MPa and 585 ± 26% at a high loading of 20 wt%, increased by 155% and 92%, compared with pure matrix, respectively. Furthermore, ENCC was still optically transparent and had excellent anti-blue-light performance (up to 96.6%). Highlights Novel inorganic/nylon composite prepared by hydrogen bond crosslinking method. Phase separation and aggregation problems were solved remarkably. Inorganic metal phosphate dispersed with a diameter of 6.5 ± 1.2 nm. The composite was still transparent at 20 wt% loading of metal phosphate. Tensile strength and elongation increased by 155% and 92%, respectively.
Smart electrochromic (EC) glasses with visible light modulation have attracted considerable attention due to their unique advantages, but EC sunglasses with anti-blue-ray function have not yet been reported. Herein, a series of wide-bandgap electrochromic conjugated polymers P2–P4 based on 3,4-propylenedioxythiophene (ProDOT) and naphthalene units were designed and synthesized using direct arylation polymerization. Among them, polymers P2 exhibit a satisfactory yellow hue and outstanding overall electrochromic performances. By tuning the intramolecular torsion between ProDOT and naphthalene units in the polymer structure, the absorption spectra of polymers P3 were entirely shifted to the high-energy violet-blue spectra region relative to the anti-blue-ray function. New dual conjugated polymer electrochromic devices based on P3 and black-to-transmissive electrochromic polymer were fabricated, which exhibited the fast transformation between black and anti-blue-ray transmissive color with a switching time of < 5.0 s, high contrast of 49% at 400–700 nm and a high coloring efficiency of 470.8 cm 2 /C. Moreover, an EC prototype sunglasses device with an anti-blue-ray function was fabricated to demonstrate the practical suitability based on the dual conjugated polymer ECDs. This work contributes to the application of EC technology to the smart glasses field.
危险品化学品经营许可证（带存储）