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Preparation method of highly hydrophobic and oleophobic emulsion containing perfluoropolyether structure

A perfluoropolyether, hydrophobic and oleophobic technology, which is applied in the field of preparation of highly hydrophobic and oleophobic emulsions, can solve problems such as the limitation of fluorine-containing reagents, and achieve good liquid crystal performance and excellent hydrophobic and oleophobic properties.

Active Publication Date: 2021-11-19
ZHEJIANG SATELLITE PETRO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the limited use of fluorine-containing reagents in the existing amphobic coating preparation method, break through the conventional thinking, and synthesize a series of functional monomers PFPEA with a perfluoropolyether structure by using a solvent method, and provide a Preparation method of green and environment-friendly highly hydrophobic and oleophobic emulsion containing perfluoropolyether structure

Method used

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  • Preparation method of highly hydrophobic and oleophobic emulsion containing perfluoropolyether structure
  • Preparation method of highly hydrophobic and oleophobic emulsion containing perfluoropolyether structure
  • Preparation method of highly hydrophobic and oleophobic emulsion containing perfluoropolyether structure

Examples

Experimental program
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Effect test

Embodiment 1

[0090] Add 10.0g butyl acrylate, 10.0g methyl methacrylate, 10.0g of the product PFPEA-1 prepared above, 1.0g of co-stabilizer n-hexadecane, 1.0g of crosslinking agent methyltrimethoxysilane, Emulsifier allyl ether hydroxypropane sulfonate sodium (UCAN-8088) 1.0g, 0.1g initiator potassium persulfate (KPS) and the rest of the water (the weight percentage of each raw material is shown in the table below), under ice bath conditions , in an ultrasonic cell pulverizer, sonicate for 3s, intermittently for 5s, and last for 15min. The obtained pre-emulsion was put into a four-necked flask, purged with nitrogen for 30 minutes, and reacted at 80° C. for 3 hours to obtain a copolymer emulsion.

[0091] Each material weight percent in the raw material of embodiment 1 is as shown in table 1:

[0092] Table 1

[0093] raw material weight percentage PFPEA-1 5％ Butyl acrylate 5％ Methyl methacrylate 5％ n-hexadecane 0.5％ Methyltrimethoxysilane 0.5％ ...

Embodiment 2-8

[0095] In Examples 2-8, PFPEA-2-8 was used to replace PFPEA-1 in Example 1, and the other conditions remained unchanged, and the same method as in Example 1 was used to prepare a copolymer emulsion.

[0096] In Comparative Example 1, PFPEA1 was not added, and other conditions remained unchanged, and the same method as in Example 1 was used to prepare a copolymer emulsion.

[0097] In Comparative Example 2, the functional monomer BRFAE containing a high fluorocarbon alcohol group structure was used to replace PFPEA-1 in Example 1, and other conditions were unchanged, and the same method as in Example 1 was used to prepare a copolymer emulsion.

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Abstract

The invention discloses a preparation method of a high hydrophobic and oleophobic emulsion containing a short-chain perfluoroalkyl group, wherein the preparation method comprises the steps: by taking water as a solvent, adding an initiator into a perfluoropolyether functional monomer PFPEA without a perfluorolong-chain alkyl group structure and an acrylic monomer in the presence of an emulsifier, a cross-linking agent and a co-stabilizer, and synthesizing a monomer copolymer through miniemulsion polymerization. A coating layer has excellent hydrophobic and oleophobic performance on glass, wood, steel plates, plastics and other base materials. The high hydrophobic and oleophobic emulsion prepared by the method does not contain a perfluoro long-chain alkyl structure, has the advantage of easiness in degradation, is environment-friendly, and meets the requirements of green chemistry.

Description

technical field [0001] The invention belongs to the technical field of special coating films, and in particular relates to a preparation method of a highly hydrophobic and oleophobic emulsion containing a perfluoropolyether structure. Background technique [0002] In nature, many animals and plants have unique shapes and structures in order to adapt to the natural environment, such as rose petals that can make water droplets roll completely, rice leaves, and water striders that can walk freely on the water surface. Inspired by this, people began to continuously research and develop hydrophobic materials. However, with the continuous development of research, it has been observed that when the hydrophobic surface is in contact with some liquids with low surface tension, such as oil stains, n-hexadecane, etc., it is very easy to be polluted due to the extension of the droplet, thereby limiting its self-improvement. cleaning function. Combining the characteristics of hydrophob...

Claims

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Application Information

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IPC IPC(8): C08F216/14C08F220/18C08F220/28C08F220/14C09D129/10C09D133/16C09D133/08C09D133/12
CPCC08F216/1416C08F220/1804C08F220/14C08F220/282C09D129/10C09D133/16C09D133/08C09D133/12
Inventor 靳琳琳杨卫东沈晓炜朱建军姚英铭丁伟王琳钱梦琦
Owner ZHEJIANG SATELLITE PETRO CHEM CO LTD
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