Amphiphilic block copolymer containing polyhedral oligomeric silsesquioxane, anti-fog/anti-frost coating and preparation method

A polysilsesquioxane, amphiphilic block technology, used in coatings and other directions

Inactive Publication Date: 2018-08-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared POSS-containing amphiphilic block copolymer coating has good film-forming properties, and the preparation method is simple, and related content has rarely been reported so far.

Method used

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  • Amphiphilic block copolymer containing polyhedral oligomeric silsesquioxane, anti-fog/anti-frost coating and preparation method
  • Amphiphilic block copolymer containing polyhedral oligomeric silsesquioxane, anti-fog/anti-frost coating and preparation method
  • Amphiphilic block copolymer containing polyhedral oligomeric silsesquioxane, anti-fog/anti-frost coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of polydimethylaminoethyl methacrylate containing POSS:

[0057] Dissolve 0.1024g POSS-Br, 27.2μL 1,1,4,7,10,10-hexamethyltriethylenetetramine, 1.887g dimethylaminoethyl methacrylate, 2ml tetrahydrofuran in 10ml of magnetic stirring In the Schlenk bottle, the freeze-thaw cycle was performed three times under the protection of nitrogen, then 0.0144 g of cuprous bromide was added to the bottle, the stopper was quickly covered, the air was exchanged three times, and the reaction was stirred at 50 ° C for 1.5 h. After the reaction, it was quenched with a small amount of tetrahydrofuran, then passed through the column with neutral alumina, then rotary evaporated and precipitated with refrigerated n-hexane three times, and the obtained polymer was dried in a vacuum oven for 24 hours to obtain the product POSS-(PDMAEMA) 43 -Br.

[0058] The structural formula of polydimethylaminoethyl methacrylate containing POSS is

[0059] in

[0060] (2) POSS-containi...

Embodiment 2

[0074] (1) Preparation of polydimethylaminoethyl methacrylate containing POSS:

[0075] Dissolve 0.1024g POSS-Br, 27.2μL 1,1,4,7,10,10-hexamethyltriethylenetetramine, 1.887g dimethylaminoethyl methacrylate, 2ml tetrahydrofuran in 10ml of magnetic stirring In the Schlenk bottle, the freeze-thaw cycle was performed three times under the protection of nitrogen, then 0.0144 g of cuprous bromide was added to the bottle, the stopper was quickly covered, the gas was changed three times, and the reaction was stirred at 50°C for 2 hours. After the reaction, it was quenched with a small amount of tetrahydrofuran, then passed through the column with neutral alumina, then rotary evaporated and precipitated with refrigerated n-hexane three times, and the obtained polymer was dried in a vacuum oven for 24 hours to obtain the product POSS-(PDMAEMA) 65 -Br.

[0076] The structural formula of polydimethylaminoethyl methacrylate containing POSS is

[0077] in

[0078] (2) POSS-containing...

Embodiment 3

[0092] (1) Preparation of polydimethylaminoethyl methacrylate containing POSS:

[0093] Dissolve 0.1024g POSS-Br, 27.2μL 1,1,4,7,10,10-hexamethyltriethylenetetramine, 1.887g dimethylaminoethyl methacrylate, 2ml tetrahydrofuran in 10ml of magnetic stirring In the Schlenk bottle, the freeze-thaw cycle was performed three times under the protection of nitrogen, then 0.0144 g of cuprous bromide was added to the bottle, the stopper was quickly covered, the air was exchanged three times, and the reaction was stirred at 50°C for 2.5 hours. After the reaction, it was quenched with a small amount of tetrahydrofuran, then passed through the column with neutral alumina, then rotary evaporated and precipitated with refrigerated n-hexane three times, and the obtained polymer was dried in a vacuum oven for 24 hours to obtain the product POSS-(PDMAEMA) 95 -Br.

[0094] The structural formula of polydimethylaminoethyl methacrylate containing POSS is

[0095] in

[0096] (2) POSS-contai...

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Abstract

The invention discloses a polyhedral oligomeric silsesquioxane-containing amphiphilic block copolymer anti-fog / anti-frost coating and a preparation method. The coating is realized by carrying out an acyl bromide reaction on amino POSS to obtain an initiating agent POSS-Br with atom transfer radical polymerization, triggering monomer dimethylaminoethyl methacrylate and monomer sulfobetaine methacrylate to form a block polymer, and carrying out ultraviolet light curing cross-linked film-formation with poly ethyleneglycol dimethacrylate to form a semi-interpenetrating network. POSS with low surface energy is enriched on the surface of the coating to take a hydrophobic effect, acrylic ester polymers PDMAEMA and PSBMA take a hydrophilic effect and also enable the coating to have high stability and durability, and SBMA (sulfobetaine methacrylate) can also improve the transparency of the coating. According to the coating, the materials are easily obtained, the method is simple and convenient, the condition is controllable, and the prepared amphiphilic coating has good anti-fog and anti-frost performance.

Description

technical field [0001] The invention relates to the synthesis of an amphiphilic block copolymer containing polyhedral oligomeric silsesquioxane (POSS) and a method for preparing an anti-fog / anti-frost coating. Background technique [0002] The accumulation of water droplets (or ice beads) on the surface of objects such as vehicle windshields will bring inconvenience to people's lives. Due to low cost, low energy consumption, and ease of implementation, anti-fog / anti-frost coatings formed from hydrophobic, hydrophilic or superhydrophilic, and amphiphilic polymer materials are important and effective solutions. [0003] The preparation of hydrophobic anti-fog / anti-frost coatings is difficult, which limits its scope of application (Liu Xiangmei, He Junhui. Research progress in anti-fog technology-from surface engineering to functional surfaces. Advances in Chemistry, 2010,22:270-276); Although the superhydrophilic surface can make water droplets spread quickly and thus has exc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D153/00C09D7/65C08F293/00C08F220/34C08F220/38
CPCC08F220/34C08F220/38C08F220/387C08F293/00C08K5/103C08L2201/10C08L2205/04C08L2312/06C09D7/63C09D153/00
Inventor 袁晓燕李川李晓晖陶超任丽霞朱孔营赵蕴慧
Owner TIANJIN UNIV
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