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Environment-friendly self-repairing stretchable polysiloxane-based material as well as synthesis method and application thereof

A polysiloxane-based, environment-friendly technology, applied in biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve problems such as insufficient mechanical properties and anti-wear properties, and achieve rapid self-healing Efficiency, good electrical properties, excellent mechanical properties

Active Publication Date: 2020-07-10
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical task of the present invention is to provide an environmentally friendly self-healing stretchable polysiloxane-based material and its synthesis method and application for the defects of existing self-healing stretchable materials with insufficient mechanical properties and wear resistance

Method used

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  • Environment-friendly self-repairing stretchable polysiloxane-based material as well as synthesis method and application thereof
  • Environment-friendly self-repairing stretchable polysiloxane-based material as well as synthesis method and application thereof
  • Environment-friendly self-repairing stretchable polysiloxane-based material as well as synthesis method and application thereof

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preparation example Construction

[0050]An environment-friendly self-healing and stretchable polysiloxane-based material of the present invention has a preparation method as follows: in the method, the complex of metal nanoparticles and two-dimensional organic molecules is used for self-healing coating, and then combined with polysiloxane The siloxane monomer reacts and polymerizes to form a polymer to generate the desired substance. The specific steps are as follows:

[0051] 1) The configuration of the main material, metal nanoparticles, two-dimensional organic molecules in a mass ratio of 1:1.5-3, the order is:

[0052] 1.1) Dissolve an appropriate amount of two-dimensional organic molecules in a solvent at a temperature of 40-70°C, add a magnet and stir at a speed of 700-1000rmp, stir for 6-8h, and fully dissolve;

[0053] 1.2) Weigh an appropriate amount of metal nanoparticles in proportion, add them into the fully dissolved two-dimensional organic molecule solution, keep the temperature and speed constan...

Embodiment 1

[0067] (1) The configuration of the main material:

[0068] Dissolve 4.14g TpPa-1 in 50mL of dichloromethane organic solvent at a temperature of 40°C, add a magnet and stir at a speed of 750rmp, stir for 6h, and fully dissolve;

[0069] Weigh 2.76g iron ferric oxide nanoparticles in proportion, add to the dichloromethane solution of fully dissolved TpPa-1, keep the temperature and speed constant, and stir for 12h;

[0070] (2) Combination of matrix material and main body material:

[0071] Put 7.92g of phenyltrimethoxysilane and 4.8g of dimethoxydimethylsilane in a three-necked flask with a magnet. Then, add 8g of deionized water, 6g of ethanol and the homogeneously mixed host material into the flask, set the temperature at 60°C, rotate at 800rmp, and stir for 10h.

[0072] Weigh 0.26g of dibutyltin dilaurate, 1.69g of titanium dioxide, and 50mL of tetrahydrofuran organic solvent into the above-mentioned three-necked flask, adjust the pH to 9, set the temperature at 50°C, an...

Embodiment 2

[0075] (1) The configuration of the main material:

[0076] Dissolve 3.84g of graphene oxide material in 50mL of water at a temperature of 50°C, add a magnet and stir at a speed of 850rmp, stir for 8h, and fully dissolve;

[0077] Weigh 2.56g of zinc nanoparticles in proportion, add them into the fully dissolved graphene oxide solution, keep the temperature and speed constant, and stir for 15 hours;

[0078] (2) Combination of matrix material and main body material:

[0079] Put 8.5g of 3-ethylenedioxypropylmethyldimethoxysilane and 2.4g of phenyltrichlorosiloxane in a three-necked flask with a magnet. Then, 5 g of deionized water, 4 g of ethanol, and the homogeneously mixed host material were added into the flask, the temperature was set at 65° C., the rotation speed was 900 rpm, and stirred for 9 h.

[0080] Weigh 0.33g of butyl stannoic acid, 2.4g of red iron oxide, and 50mL of tetrahydrofuran organic solvent into the above-mentioned three-necked flask, adjust the pH to 1...

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Abstract

The invention provides an environment-friendly self-repairing stretchable polysiloxane-based material as well as a synthesis method and application thereof, and belongs to the field of polymer chemistry and synthesis. The material comprises synthesized main body materials and a base material, and the main body materials mainly comprise metal nanoparticles and a two-dimensional material according to the mass ratio of 1: 1.5-3. The base material polysiloxane is mainly prepared from silane, a catalyst, a film forming agent, a curing agent and a filler according to the mass ratio of 1: (0.02 to 0.07): (0.1 to 0.3): (0.08 to 0.2): (0.13 to 0.32), so that the reaction time, the reaction temperature, the catalyst, the pH value and other parameters are further optimized. An antifouling coating canbe prepared, growth of marine fouling bacteria is effectively inhibited, and an excellent self-repairing effect is achieved. The environment-friendly self-repairing stretchable polysiloxane-based material can also be used as a wearable material for application due to the characteristics of stretchability and self-repairing performance, and the combination of the mechanical performance and the self-repairing performance is realized by utilizing the thermodynamic stability and the dynamic instability of metal coordination bonds.

Description

technical field [0001] The invention relates to the technical field of polymer chemistry and synthesis, in particular to an environment-friendly self-repairing and stretchable polysiloxane-based material and its synthesis method and application. Background technique [0002] The perennial use of large instruments such as offshore platforms, oil pipelines, and underwater vehicles will lead to the attachment of a large number of microorganisms, and their metabolism can easily accumulate waste on the surface of the equipment, resulting in obstruction of the operation of the instrument. [0003] With the popularization of intelligent electronic devices, people's demand for wearable electronic materials is becoming more and more extensive. However, these materials will inevitably encounter external damage such as scratches and bumps during use, which will affect the performance of the device. Therefore, making the material stretchable and self-healing can greatly extend the serv...

Claims

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Application Information

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IPC IPC(8): C08G77/26C09D183/08C09D5/14C09D5/16C08L83/08
CPCC08G77/26C08L83/08C09D5/14C09D5/1618C09D5/1625C09D5/1675C09D183/08
Inventor 王巍刘琮陈守刚李文窦雯雯
Owner OCEAN UNIV OF CHINA
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