Flame-retardant degradable antibacterial polylactic acid elastic fiber and preparation method thereof

Abstract

The invention discloses a flame-retardant degradable antibacterial polylactic acid elastic fiber. The flame-retardant degradable antibacterial polylactic acid elastic fiber is prepared from the following raw materials in parts by mass: 100 parts of polylactic acid, 5 to 10 parts of maleic anhydride grafted compatilizer, 1 to 2 parts of tert-butyl peroxybenzoate, 8 to 12 parts of antibacterial agent, 5 to 8 parts of citric acid, 10 to 16 parts of tert-butyl alcohol, 2 to 5 parts of vinyl polydimethylsilane, 0.2 to 0.5 part of phosphite, and 10 to 18 parts of flame-retardant agent; the antibacterial agent is prepared from the following components in parts by mass: 20 parts of nanometer cerium oxide, 75 parts of nanometer zinc oxide, and 5 parts of modified activated carbon; the flame-retardant agent is prepared from the following components in parts by weight: 15 to 25 parts of phosphate, 5 to 10 parts of cobalt oxide, and 20 to 30 parts of diammonium phosphate. The flame-retardant degradable antibacterial polylactic acid elastic fiber has the advantages that the raw materials are non-toxic or are basically non-toxic, and the green chemical principle is met; the effects of degradability, large elasticity, good flame-retardant effect and antibacterial property are realized; the whole preparation method is simple and feasible.

Description

technical field [0001] The invention relates to a fiber, in particular to a flame-retardant, degradable and antibacterial polylactic acid elastic fiber. Background technique [0002] Polylactic acid is compounded in units of microbial fermentation product lactic acid. Polylactic acid products can be completely decomposed into carbon dioxide and others after being discarded, and will not pollute the environment, so it is a completely natural cycle degradable material. However, the defects of high brittleness and high hardness of polylactic acid limit its further application, especially in the fiber field, and its elastic properties need to be improved. As people pay more and more attention to the environment and their own health, the functional requirements for polylactic acid fibers are gradually increasing. In addition, polylactic acid is extremely flammable, and its limiting oxygen index is only 19%. Contents of the invention [0003] The object of the present inventi...

AI Technical Summary

Problems solved by technology

However, the defects of high brittleness and high hardness of polylactic acid limit its further application, especially in the fiber field, and the elastic properties also need to be improved.