Free radical emulsion polymerization manufacturing method and application of functional nanocapsule slurry

Abstract

The invention discloses a free radical emulsion polymerization manufacturing method and application of functional nanocapsule slurry. The manufacturing method comprises the following steps of: mixing 1 to 100 weight parts of functional material, 5 to 30 weight parts of oil-soluble monomer, 0.5 to 5 weight parts of cross-linking agent and 0.01 to 0.5 weight part of initiator to obtain mixed liquor, and heating the mixed liquor to a temperature higher than the melting point of the functional material; and mixing and emulsifying the mixed liquor and 150 to 400 weight parts of emulsifier aqueous solution which contains 0.1 to 20 weight parts of amphiphilic block copolymer, adding 0.01 to 5 weight parts of co-emulsifier in the emulsifying process, introducing nitrogen to remove oxygen, regulating the temperature of polymerization reaction to be between 60 and 90 DEG C under low-speed stirring, and reacting for 3 to 5 hours to obtain the functional nanocapsule slurry. In the application, the functional nanocapsule slurry is directly used as a solvent for wet spinning to prepare spinning solution for preparing functional fibers.

Description

technical field [0001] The invention relates to the technology for preparing nanocapsules and fiber applications, in particular to a free radical emulsion polymerization manufacturing method of functional nanocapsule slurry and the use of the functional nanocapsule slurry to prepare fibers. Background technique [0002] The 21st century is a new era of rapid development of high technology, and the competition in the international textile market has also entered a new period. People's demand for clothing materials is getting higher and higher, and it has developed to not only require physical comfort (thinness, warmth, coolness), but also psychological comfort (visual tone gloss, tactile feel, softness, bulkiness, Drapability), but also requires certain special functionality (antibacterial, antistatic, flame retardant, anti-ultraviolet, anti-electromagnetic radiation), that is, it is required to have the characteristics of comfort, functionality, high quality, and bodybuildin...

AI Technical Summary

Problems solved by technology

The method has the following disadvantages: 1, the method directly mixes the functional aromatic agent with the spinning stock solution and forms it according to the conventional wet spinning and spinning process to obtain the aromatic viscose fiber, in which the aromatic agent is easily exhausted; 2, The fragrance used in this method is a water-soluble fragrance, which is difficult to use in the manufacture of synthetic fibers

This method has the following disadvantages: 1. The fiber prepared by this method is a skin-core structure, and its core material is easy to overflow, and the fragrance retention time is limited; 2. The flavoring agent used in this method is essential oil, which belongs to oily substances and cannot be used for making viscose Fiber; 3. The method is complicated in process and high in production cost, which is not conducive to popularization and application

The deficiencies in the two patented methods are: 1. When using an emulsifier aqueous solution with a high HLB value, although the emulsification efficiency is high, the encapsulation efficiency decreases; when a polymerization stabilizer is used, the encapsulation efficiency improves, but the capsule particle size becomes larger ; 2. Only micron-sized capsules with an average particle size > 1 micron can be obtained. If used for fiber spinning, the strength of the fiber will be greatly reduced; 3. When used for fiber coating, the coating layer is very easy to fall off, making the Fiber loses its functionality

The deficiency that this method exists is: 1, the particle diameter of the microcapsules that uses is about 5 microns, because particle diameter is big, when the adding amount is high, the intensity of fiber declines; 2, use dry powder microcapsule redispersion method to prepare microcapsule Slurry will increase energy consumption and cost, which is not conducive to large-scale production