Preparation and application of olefin copolymer

A technology of olefin copolymers and polymers, applied in coatings and other directions, can solve the problems of poor adhesion and low surface energy of fluorosilicon materials, and achieve good anti-icing performance

Inactive Publication Date: 2021-04-02
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the main anti-icing materials are fluorine-containing or silicon-containing materials with

Method used

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  • Preparation and application of olefin copolymer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of copolymers, the preparation method is: 0.15g (1mmol) norbornene carboxylate methyl ester and 1.18g (5mmol) norbornene carboxylate heptyl ester were dissolved in dichloromethane, prepared into a solution with a mass fraction of 5%, in Under nitrogen protection, Grubbs second-generation catalyst (Grubbs 2 nd , 8.49mg) was dissolved in a solvent and injected into the reaction bottle through a syringe. Then remove the ice bath and react at 15°C for 48 hours. After the reaction, a small amount of vinyl ether was added dropwise to terminate the reaction, and the copolymer was obtained by rotary evaporation and precipitation.

[0021] Prepare the copolymer film, the preparation method is: first dissolve the above-mentioned olefin copolymer (0.5g) in toluene (0.5g) to prepare a 50% polymer solution, and then apply the solution on the substrate by casting method , After drying at 60°C for 12h, the copolymer film was obtained.

[0022] The film water contact angl...

Embodiment 2

[0024] Prepare the copolymer, the preparation method is: 0.64g (3mmol) phenyl norbornene carboxylate and 0.01g (0.03mmol) hexadecyl norbornene carboxylate are dissolved in benzene, and are prepared into a solution with a mass fraction of 25%. Under nitrogen protection, Grubbs second-generation catalyst (Grubbs 2 nd , 4.33mg) was dissolved in solvent and injected into the reaction bottle through a syringe. Then remove the ice bath, react at 25°C for 12 hours, drop a small amount of vinyl ether to terminate the reaction, and obtain a copolymer by rotary evaporation and precipitation.

[0025] To prepare a copolymer film, the preparation method is as follows: firstly, the above-mentioned olefin copolymer (0.3g) is dissolved in ethyl acetate (0.7g) to prepare a 30% polymer solution, and then the solution is coated on the substrate by casting method. After drying at 30°C for 48 hours, the copolymer film was obtained.

[0026] The water contact angle of the copolymer film is 70°, ...

Embodiment 3

[0028] Prepare the copolymer, the preparation method is: 0.03g (0.01mmol) norbornene carboxylate pentafluorophenyl ester and 2.11g (6mmol) norbornene carboxylate octafluoropentyl ester are dissolved in tetrahydrofuran, and the mass fraction is 30% solution, under the protection of nitrogen, and then Grubbs second-generation catalyst (Grubbs 2 nd , 16.97mg) was dissolved in solvent and injected into the reaction vial through a syringe. Then the ice bath was removed, and the reaction was carried out at 45°C for 3 hours. After the reaction was completed, a small amount of vinyl ether was added dropwise to terminate the reaction, and the copolymer was obtained by rotary evaporation and precipitation.

[0029] To prepare the copolymer film, the preparation method is as follows: first dissolve the above olefin copolymer (0.5g) in N,N-dimethylformamide (9.5g) to prepare a 5% polymer solution, and then use the solution Coated on the substrate by casting method, and dried at 100°C for...

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Abstract

The invention provides preparation and application of an olefin copolymer. The olefin copolymer is prepared by olefin metathesis polymerization, and then a copolymer film is obtained by pouring. The prepared copolymer has good anti-icing performance.

Description

technical field [0001] The invention relates to the preparation and application of an olefin copolymer, belonging to the technical field of polymer preparation. Background technique [0002] In the fields of transportation, aerospace, electric power communication, etc., icing on the surface of equipment brings great harm and potential safety hazards. How to effectively prevent icing or icing has always been the focus of research at home and abroad. At present, the main anti-icing materials are fluorine-containing or silicon-containing materials with low surface energy, but fluorine-silicon materials have the problem of poor adhesion to the substrate. According to the anti-icing strategy proposed in recent years that the crack initiator reduces the shear strength of the surface ice, the polymer components are adjusted to exhibit different deformation capabilities to initiate cracks between the ice layer and the surface, and then obtain ultra-low ice shear The anti-icing sur...

Claims

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Application Information

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IPC IPC(8): C09D145/00C08F232/08
CPCC08F232/08C09D145/00
Inventor 李辉燕晴周翠平宫凯赵绚赵小云
Owner UNIV OF JINAN
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