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Synthesizing method for acrylate copolymers with hydrophobicity

An acrylate and synthesis method technology, which is applied in the field of synthesis of hydrophobic acrylate copolymers, can solve the problems of poor hydrophobicity, poor emulsification effect, and low polymerization efficiency of polymers, and achieve improved waterproof and antifouling properties, hydrophobic Outstanding performance and high purity effect

Active Publication Date: 2019-01-04
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a synthetic method of a hydrophobic acrylate copolymer, which solves the problems of low polymerization efficiency of existing hydrophobic fluorine-containing acrylate monomers, poor emulsification effect, residual emulsifier in the copolymer, This leads to problems such as poor hydrophobicity of the polymer and serious environmental pollution.

Method used

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  • Synthesizing method for acrylate copolymers with hydrophobicity
  • Synthesizing method for acrylate copolymers with hydrophobicity
  • Synthesizing method for acrylate copolymers with hydrophobicity

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1) Preparation of emulsifier water emulsion:

[0041] In the 250ml there-necked flask (reaction device such as figure 1 As shown), add 50ml deionized water, and add 0.606g SDS, 0.3578g OP-10, 0.1503g FS-3100. Stir at room temperature for 20 minutes at a rotational speed of 650 r / min, then ultrasonically disperse and stir in an ice-water bath for 20 minutes to obtain a uniform emulsifier water emulsion.

[0042] 2) Preparation of monomer mini-emulsion:

[0043] Weigh 0.1038g AIBN, 5.0018g formaldehyde methyl acrylate (MMA), 6.405g butyl acrylate (BA), 1.0292g hexadecane, mix well and add to the constant pressure dropping funnel, slowly drop to step 1) synthesis In the emulsifier aqueous emulsion, continue to stir at room temperature for 30 minutes after the dropwise addition, then ultrasonically disperse and stir in an ice-water bath for 20 minutes, take it out and let it stand until it returns to room temperature to obtain a monomer miniemulsion.

[0044] 3) Polymeri...

Embodiment 2

[0051] 1) Preparation of emulsifier water emulsion:

[0052] In the 250ml there-necked flask (reaction device such as figure 1 As shown), add 50ml deionized water, and add 0.6146g SDS, 0.3925g OP-10, 0.1793g FS-3100. Stir at room temperature for 20 minutes at a rotational speed of 650 r / min, then ultrasonically disperse and stir in an ice-water bath for 20 minutes to obtain a uniform emulsifier water emulsion.

[0053] 2) Preparation of monomer mini-emulsion:

[0054] Weigh 0.1039g AIBN, 0.9494g perfluorooctyl ethyl acrylate (FA), 4.9942g MMA, 6.5382gBA, 0.9936g hexadecane, mix well and add to the constant pressure dropping funnel, slowly drop to step 1 ) into the emulsifier water emulsion synthesized, after the dropwise addition, continue to stir at room temperature for 30 minutes, then ultrasonically disperse and stir in an ice-water bath for 20 minutes, take it out and let it stand until it returns to room temperature to obtain a monomer miniemulsion.

[0055] 3) Polymer...

Embodiment 3

[0062] 1) Preparation of emulsifier water emulsion:

[0063] In the 250ml there-necked flask (reaction device such as figure 1 As shown), add 50ml deionized water, and add 1.4651g DMC, 0.3298g OP-10, 0.1735g FS-3100. Stir at room temperature for 20 minutes at a rotational speed of 650 r / min, then ultrasonically disperse and stir in an ice-water bath for 20 minutes to obtain a uniform emulsifier water emulsion.

[0064] 2) Preparation of monomer mini-emulsion:

[0065] Weigh 0.1008g AIBN, 1.0347g FA, 5.2118g MMA, 6.4367g BA, 1.017g hexadecane, mix uniformly and add in the constant pressure dropping funnel, slowly add it dropwise to the emulsifier aqueous emulsion synthesized in step 1), After the dropwise addition, continue to stir at room temperature for 30 minutes, then ultrasonically disperse and stir in an ice-water bath for 20 minutes, take it out and let it stand until it returns to room temperature to obtain a monomer fine emulsion.

[0066] 3) Polymerization of minie...

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Abstract

The invention discloses a synthesizing method for acrylate copolymers with hydrophobicity. A small amount of compound emulgator and co-stabilizer is used for making acrylate monomers form uniform andstable miniemulsion. A miniemulsion polymerization method is adopted for obtaining acrylate copolymer emulsion, and after polymerization is finished, through a separation technology of demulsificationcohesion and many-time dissolution-sediment circulating operation, the acrylate copolymer with hydrophobicity is obtained. No obvious emulgator residues are contained in the obtained copolymer, the purity and hydrophobicity performance of the acrylate copolymers with hydrophobicity are improved, the using amount of fluorine-containing monomers is reduced, and the cost is reduced; a polymerizationsite of miniemulsion polymerization is oily monomer drops, it is avoided that in the conventional emulsion polymerization process, acrylate monomers need to be diffused to solubilizing micelles through an aqueous phase, the polymerization conversion rate of the fluorine-containing acrylate monomers with hydrophobicity is effectively improved, the discharging amount of fluorine-containing monomersis reduced, and environmental pollution is reduced. The synthesizing method has a good application prospect in the field of water-proof antifouling paint.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis, and in particular relates to a method for synthesizing a hydrophobic acrylate copolymer. Background technique [0002] Hydrophobic polymer has low surface energy. When used as a coating, it can make the surface of the material have good waterproof and antifouling performance. It has a wide range of application values ​​in the fields of transportation, biomedicine, aerospace and military. Among the common synthetic methods of hydrophobic polymers, the free radical polymerization of acrylate monomers is the most common, because free radical polymerization does not require high reaction conditions, it is easy to operate and realize industrial production, and the types of acrylate monomers There are many sources, and the price is cheap. Acrylic monomers with different structures are easy to achieve copolymerization due to their similar Q and e values. It is convenient to adjust th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F2/26C08F2/28
CPCC08F2/26C08F2/28C08F220/18C08F220/1804C08F220/14
Inventor 高晨张雪梅李新跃盛玉萍夏益青曹桐李斌
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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