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Preparation method of photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion

A technology of polyacrylate and soap-free emulsion is applied in the field of preparation of light-responsive self-healing fluorine-containing polyacrylate soap-free emulsion to achieve the effects of improving stability, improving compactness and wide source of raw materials

Inactive Publication Date: 2021-12-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the synthesis of light-responsive fluorine-containing amphiphilic block copolymers by RAFT polymerization and their use as polymer surfactants in fluorine-containing acrylate emulsions

Method used

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  • Preparation method of photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion
  • Preparation method of photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion
  • Preparation method of photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Step 1. At room temperature, mix 0.30g S-1-dodecyl-S'-(α,α"-dimethyl-α"-acetic acid) trithiocarbonate, 0.04g azobisisobutyronitrile (AIBN), 10.02g of ethyl 2-(dimethylamino)acrylate, and 50g of 1,4-dioxane were sequentially added to the four-neck flask; while magnetically stirring, argon was passed for 25 minutes; the temperature was raised to 65°C, and the reaction was carried out for 10 hours. . The obtained poly-2-(dimethylamino)ethyl acrylate is purified by n-hexane, and then dried to obtain pure poly-2-(dimethylamino)ethyl acrylate;

[0077] The ratio of the amount of azobisisobutyronitrile to S-1-dodecyl-S'-(α, α"-dimethyl-α"-acetic acid) trithiocarbonate is 0.30;

[0078] The ratio of the amount of poly 2-(dimethylamino)ethyl acrylate to S-1-dodecyl-S'-(α, α"-dimethyl-α"-acetic acid) trithiocarbonate for 85.

[0079] Step 2, 3.04g of pure poly 2-(dimethylamino)ethyl acrylate, 0.012g of azobisisobutyronitrile (AIBN), 1.5g of 7-(3-acrylate propoxy)-4-methyl Cou...

Embodiment 2

[0090] Step 1. At room temperature, mix 0.12g S-(2-cyano-2-propyl)-S-dodecyltrithiocarbonyl ester, 0.014g azobisisobutyronitrile (AIBN), 8.0g 2 -(diethylamino)ethyl methacrylate and 40 g of toluene were sequentially added to the four-necked flask; while magnetic stirring was carried out, argon gas was passed for 25 min; the temperature was raised to 70° C., and the reaction was carried out for 10 h. The obtained poly 2-(diethylamino) ethyl methacrylate is purified by n-hexane, and then dried to obtain pure poly 2-(diethylamino) ethyl methacrylate;

[0091] The ratio of the amount of azobisisobutyronitrile to S-(2-cyano-2-propyl)-S-dodecyltrithiocarbonyl ester is 0.25;

[0092] The ratio of the amount of poly(2-(diethylamino)ethyl methacrylate) to S-(2-cyano-2-propyl)-S-dodecyltrithiocarbonyl ester was 124.

[0093] Step 2, 7.21g of pure poly 2-(diethylamino)ethyl methacrylate, 0.013g of azobisisobutyronitrile (AIBN), 2.5g of 7-(2-acrylate ethoxy)-4- Methyl coumarin, 1.3 g of...

Embodiment 3

[0104] Step 1. At room temperature, add 0.12g of benzyl dithiobenzoate, 0.016g of azobisisobutyronitrile (AIBN), 8.0g of N-[(3-(dimethylamino)propyl]methacrylamide, Add 40g of aniline to the four-necked flask successively; while stirring magnetically, pass argon for 25min; heat up to 75°C, and react for 9h. Use n-hexane to obtain poly-N-[(3-(dimethylamino)propyl]methacrylic acid The amide is purified, and then dried to obtain pure poly N-[(3-(dimethylamino)propyl]methacrylamide;

[0105] The ratio of the amount of azobisisobutyronitrile to benzyl dithiobenzoate is 0.20;

[0106] The amount ratio of poly-N-[(3-(dimethylamino)propyl]methacrylamide to benzyl dithiobenzoate was 95.

[0107] Step 2, 7.21g pure poly N-[(3-(dimethylamino)propyl]methacrylamide, 0.014g azobisisobutyronitrile (AIBN), 2.5g 7-(4-vinylbenzyl Oxygen)-4-methylcoumarin, 1.3g of dodecafluoroheptyl methacrylate, and 50g of aniline were sequentially added to a four-necked flask; argon was passed for 30 minutes...

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Abstract

The invention discloses a preparation method of a photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion. The preparation method comprises the following steps: step 1, synthesizing a photoresponse fluorine-containing amphiphilic block polymer with an active end group; and step 2, preparing the photoresponse self-repairing fluorine-containing polyacrylate soap-free emulsion through RAFT (reversible addition fragmentation chain transfer) soap-free emulsion polymerization. The photoresponse amphiphilic block copolymer used in the invention not only can play a role in emulsification, but also can participate in polymerization reaction, so that the photoresponse amphiphilic block copolymer is bonded to emulsion particles in the form of covalent bonds, the adverse effect of a conventional micromolecule emulsifier on the properties of emulsion and film is eliminated, and the self-repairing of the film can be realized under the action of light stimulation.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a preparation method of light-responsive self-repairing fluorine-containing polyacrylate soap-free emulsion. Background technique [0002] Fluorine-containing polyacrylate polymers not only maintain the good film-forming properties, flexibility and adhesion of polyacrylate polymers, but also have the stability, chemical inertness, water and oil repellency and anti-corrosion properties of fluorine-containing polymers. It has been widely used in textile finishing, functional coating, biomedical, aerospace and microelectronics fields. Emulsion polymerization uses water as the medium, has the advantages of mild reaction, no pollution to the environment and low cost. It is often used to synthesize fluorine-containing polyacrylate emulsion. The fluorine-containing polyacrylate emulsion is prepared by traditional emulsion polymerization. Due to the existence of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F287/00C08F293/00C08F220/34C08F220/24C08F220/60C08F220/40C08F220/14C08F220/18C08F212/32C08J3/03C08L51/00
CPCC08F287/00C08J3/03C08F293/005C08F220/34C08F220/40C08F220/24C08F220/60C08F212/32C08J2351/00C08F2438/01C08F220/14C08F220/1804
Inventor 周建华李红
Owner SHAANXI UNIV OF SCI & TECH
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