This invention discloses an electro-welding protective glove and its preparation method. The method comprises: S1, selecting raw materials; S2, preparing a refined terephthalic acid/graphene oxide/ethylene glycol modified slurry; S3, esterification reaction; S4, condensation reaction; S5, heating and melting the modified graphene oxide flame-retardant polyester masterbatch, then spinning it into a bundle; S6, weaving the obtained graphene oxide flame-retardant polyester filament into a woven fabric; S7, preparing a flame-retardant agent finishing solution, immersing the fabric into the finishing solution, then drying it; S8, according to the glove template, cutting and sewing the obtained fabric. This invention also provides an electro-welding protective glove prepared by the method. The method provided by this invention is simple and suitable for electro-welding and other fields, and can effectively protect human safety.

An encapsulated dye, may include a dye, such as a vat dye, and an encapsulating agent, such as cyclodextrin. A dye formulation is provided for dyeing a fiber, a yarn including a fiber, and/or a fabric including a fiber. The fiber may be a synthetic fiber. A method of preparing an encapsulated dye and/or a dye formulation, and to a method of dyeing are also described. A fiber, a yarn, and/or a fabric including an encapsulated dye, a fiber, a yarn, and/or a fabric dyed with an encapsulated dye, an installation for dyeing, and to uses of a cyclodextrin, an encapsulated dye, and an installation are provided.