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

A manufacturing method and emulsion polymerization technology, which are applied in microcapsule preparation, rayon manufacturing, microsphere preparation, etc., can solve the problems of reducing fiber strength, easy overflow of core material, complicated process, etc. The effect of increasing equipment and simple production process

Inactive Publication Date: 2011-09-07
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 u

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Production of photochromic nanocapsule slurry by free radical emulsion polymerization:

[0033] Earlier the aqueous solution (solid content 19.0% weight) of 1.0 kilograms of styrene-maleic anhydride copolymers is dissolved in 20 kilograms of waters, obtains emulsifier aqueous phase; Then 300 grams of spirooxazine, 3.2 kilograms of methyl methacrylate, After 0.32 kilograms of crosslinking agent 1,4-butylene glycol diacrylate and initiator dibenzoyl peroxide are mixed and dissolved, they are added to the aforementioned water phase as an oil phase, and the high-shear Cut emulsification for 2 hours (the average particle size of the emulsion droplets is 758nm), slowly add 55ml of co-emulsifier n-heptanol during emulsification, and after 30 minutes of deoxygenation with nitrogen, change to 160 rpm for paddle stirring, and heat up to 75°C , carry out the polymerization reaction for 5 hours, and cool to room temperature to obtain the photochromic nanocapsule slurry. The so...

Embodiment 2

[0037] (1) Radical emulsion polymerization to produce heat-storing and temperature-regulating nanocapsule slurry:

[0038] First the aqueous solution (solid content 19.0% weight) of 0.5 kilogram of styrene-maleic anhydride copolymers is dissolved in 20 kilograms of water, obtains emulsifier aqueous phase; After the crosslinking agent divinylbenzene and 18.3g initiator azobisisobutyronitrile were mixed and dissolved, they were added to the aforementioned water phase as an oil phase, and were emulsified by high shear for 1.5 hours at a speed of 9200 rpm (emulsion The average particle size of the droplets is 650nm), and 48ml of n-hexanol is slowly added during emulsification, and the rest is the same as in Example 1 (1), to obtain n-hexadecane heat storage and temperature regulating sodium capsule slurry. The solids content of the slurry was 29% by weight.

[0039] (2) Manufacture of heat storage and temperature regulating viscose fiber:

[0040] 10.0 kilograms of above-mention...

Embodiment 3

[0042] (1) Production of vitamin E nanocapsule slurry by free radical emulsion polymerization:

[0043] Earlier the aqueous solution (solid content 20.0% weight) of 1.2 kilograms of ethylene-maleic anhydride copolymers is dissolved in 18.8 kilograms of waters, obtains emulsifying agent aqueous phase; After the joint agent 1,4-butylene glycol diacrylate and 15.0 g of the initiator benzoyl peroxide are mixed and dissolved, they are added to the aforementioned water phase as an oil phase, and emulsified at a speed of 9000 rpm with a high shear of 2.0 hour (emulsion droplet average particle diameter 920nm), slowly add the n-decyl alcohol of 60ml during the emulsification, all the other are the same as Example 1, namely obtain the vitamin E nanocapsule slurry. The solids content of the slurry was 23% by weight.

[0044] (2) Manufacture of vitamin E viscose fiber:

[0045] 10.0 kilograms of above-mentioned slurries are mixed with 330 kilograms of water and are made into lye, and all...

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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...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F222/14C08F212/08C08F212/36C08F2/24B01J13/02D01F1/00
Inventor 王建平王学晨张兴祥李和玉牛建津
Owner TIANJIN POLYTECHNIC UNIV
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