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Bisphenol-A F-PEG block copolymer hydrophilic surface coating and preparation method thereof

A technology of block copolymer and hydrophilic surface, applied in the direction of coating, etc., can solve the problems of few types of anti-icing coatings and large application limitations, and achieve prolonged freezing time, short reaction time and mild reaction conditions Effect

Active Publication Date: 2018-01-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the anti-icing coatings used have many problems such as few types and large application limitations, which cannot meet the requirements of the society at all. It is urgent to develop an anti-icing coating material with excellent comprehensive performance ( Progress in Chemistry , 2012 24:2087-2096)

Method used

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  • Bisphenol-A F-PEG block copolymer hydrophilic surface coating and preparation method thereof
  • Bisphenol-A F-PEG block copolymer hydrophilic surface coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Preparation of bisphenol AF polyarylate with double bonds in the terminal group:

[0039] Add 5g of bisphenol AF type diallyl ether, 0.15g of Grubbs-Hoveyda II catalyst and 10g of trifluorotoluene into the reaction flask, stir evenly, raise the temperature to 80°C, react for 2 hours, and cool down to stop the reaction. The solvent was removed by rotary evaporation to obtain a brown solid product with a number average molecular weight of 2700.

[0040] 2) Preparation of bisphenol AF-PEG block copolymers with double bonds in the main chain:

[0041] 5.4g (0.002mol) of bisphenol AF polyarylate with double bonds in the end group prepared in the above step 1), 6g (0.003mol) of polyethylene glycol diacrylate (number average molecular weight of 2000) and 0.041g (0.00005 mol) Grubbs I catalyst and 20g tetrahydrofuran, put into the reaction flask, blow nitrogen, stir evenly, raise the temperature to 60°C, react for 3h, remove the solvent, and obtain a brown product with a nu...

Embodiment 2

[0045] 1) Preparation of bisphenol AF polyarylate with double bonds in the terminal group:

[0046] Add 5g of bisphenol AF diacrylate, 0.05g of Grubbs-Hoveyda I catalyst and 20g of dimethylformamide into the reaction flask, stir evenly, raise the temperature to 90°C, react for 6h, and cool down to stop the reaction. The solvent was removed by rotary evaporation to obtain a brown solid product with a number average molecular weight of 31000.

[0047] 2) Preparation of bisphenol AF-PEG block copolymers with double bonds in the main chain:

[0048] 3.1g (0.0001mol) of bisphenol AF polyarylate with double bonds in the end group prepared in the above step 1), 4g (0.0004mol) of polyethylene glycol diacrylate (number average molecular weight of 10000) and 0.0042g (0.000005 mol) Grubbs II catalyst and 20g of dimethylformamide were added to the reaction flask, nitrogen was blown, and after stirring evenly, the temperature was raised to 80°C, reacted for 6h, and the solvent was removed...

Embodiment 3

[0052] 1) Preparation of bisphenol AF polyarylate with double bonds in the terminal group:

[0053] Add 5g of bisphenol AF type diallyl benzoxazine, 0.02g of Grubbs-Hoveyda II catalyst and 5g of pentafluorodichloropropane into the reaction flask, stir evenly, raise the temperature to 60°C, react for 2h, cool down to stop the reaction . The solvent was removed by rotary evaporation to obtain a brown solid product with a number average molecular weight of 11000.

[0054] 2) Preparation of bisphenol AF-PEG block copolymers with double bonds in the main chain:

[0055] 2.2g (0.0002mol) of bisphenol AF polyarylate with double bonds in the end group prepared in the above step 1), 0.4g (0.0004mol) of polyethylene glycol divinyl ether (number average molecular weight of 1000) and 0.044g Add (0.00005mol) GrubbsIII catalyst and 10g tetrahydrofuran into the reaction flask, blow nitrogen gas, stir evenly, raise the temperature to 60°C, react for 3 hours, remove the solvent, and obtain a...

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Abstract

The invention relates to a bisphenol-A F-PEG block copolymer hydrophilic surface coating and a preparation method thereof. The preparation method comprises the steps: firstly, preparing a bisphenol-AF-PEG block copolymer by olefin metathesis polymerization; then, and constructing a hydrophilic anti-icing surface coating by using the prepared block copolymer. The prepared bisphenol-A F-PEG block copolymer is controllable in molecular weight, capable of producing a microphase separation structure on the surface and strong in hydrophobicity; and the preparation method is simple, mild in reactioncondition, short in reaction time and beneficial to industrialization. The water contact angle of a hydrophilic surface formed by the block copolymer is smaller than 20 DEG. Although the interactionforces of water molecules of a fluorine-containing chain segment and a PEG chain segment are different, the water molecule aggregation on the surface of the copolymer can be disturbed at low temperature, ice adhesion can be avoided at the temperature ranging from 7 DEG C below zero to 0 DEG C, and the icing time can be prolonged. The bisphenol-A F-PEG block copolymer hydrophilic surface coating has a wide application prospect in the anti-icing field.

Description

technical field [0001] The invention relates to a bisphenol AF-PEG block copolymer hydrophilic surface coating and a preparation method thereof, belonging to the technical field of coating preparation and application. Background technique [0002] Ice disasters have brought great harm to human beings and society. How to effectively prevent the freezing of water droplets on the surface of substrates at low temperatures has become an important and urgent issue. At present, the anti-icing coatings used have many problems such as few types and large application limitations, which cannot meet the requirements of the society at all. It is urgent to develop an anti-icing coating material with excellent comprehensive performance ( Progress in Chemistry , 2012 24:2087-2096). Anti-icing coatings on hydrophilic surfaces have received much attention in recent years. Block copolymers are a class of functional polymers in which different segments of chemical structure are alternately po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D187/00C08G81/02C08F299/04
Inventor 李辉李光明张书香周翠平杨聚敏
Owner UNIV OF JINAN
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