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Preparation method of perfluoropolyether siloxane product and application of product in super-hydrophobic anti-fingerprint coating

A perfluoropolyether siloxane and product technology, applied in polyether coatings, coatings, etc., can solve problems such as high cost and harsh environment, and achieve the effects of reducing production costs, good adhesion, and excellent antifouling performance

Active Publication Date: 2021-12-14
GANSU HUALONG SEMICON MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the perfluoropolyethers used in this type of compound are macromolecular substances, their synthesis requires a relatively harsh environment and high cost. Therefore, it is necessary to develop an anti-fingerprint coating with low cost and high hydrophobicity and high wear resistance.

Method used

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  • Preparation method of perfluoropolyether siloxane product and application of product in super-hydrophobic anti-fingerprint coating
  • Preparation method of perfluoropolyether siloxane product and application of product in super-hydrophobic anti-fingerprint coating
  • Preparation method of perfluoropolyether siloxane product and application of product in super-hydrophobic anti-fingerprint coating

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Effect test

Embodiment 1～4

[0070] The embodiment of the present invention provides a preparation method of perfluoropolyether siloxane compound, comprising the following steps:

[0071] (1) in N 2 Under protected conditions, add 20g allyl bromide, 16.3-20.7g cuprous chloride and 20-31g organic base to the reactor, add 29g trichlorosilane dropwise at room temperature, and reflux the reaction for 6 hours until the system has no reflux state; After the completion, the insoluble matter was removed by filtration, and the unreacted trichlorosilane and organic base were extracted with the extractant tetrahydrofuran, the non-extractant layer was collected, and the residual tetrahydrofuran was distilled off under reduced pressure to obtain the intermediate product I (allyltrichlorosilane).

[0072] (2) in N 2 Under the condition of protection, add 50g perfluoropolyether alcohol (molecular weight: 1000~2000), 1.3~2.9g intermediate product I, 3.6~6.7g potassium tert-butoxide, 110mL tert-butanol into the reactor, ...

Embodiment 5

[0094] The preparation method of a perfluoropolyether siloxane compound is basically the same as that in Example 1, the difference is that: the reaction temperature in the step (2) is 50°C; the reaction temperature in the step (3) is 90°C °C; the reaction temperature in step (5) is 90 °C; the reaction temperature in step (6) is 80 °C.

Embodiment 6

[0096] The preparation method of a perfluoropolyether siloxane compound is basically the same as in Example 1, except that the reaction temperature in step (2) is 60 °C; the reaction temperature in step (3) is 120 °C °C; the reaction temperature in step (5) is 120 °C; the reaction temperature in step (6) is 90 °C.

[0097] 2. Preparation of superhydrophobic anti-fingerprint coating

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Abstract

The invention discloses a preparation method of a perfluoropolyether siloxane product and application of the perfluoropolyether siloxane product in a super-hydrophobic anti-fingerprint coating, and belongs to the technical field of fluorine-containing polysiloxane new materials. According to the method, trichlorosilane serves as an initial reaction raw material and reacts with a Grignard reagent I to prepare an intermediate product I; the intermediate product I reacts with oligomeric perfluoropolyether alcohol to obtain an intermediate product II; hydrosilylation reaction is conducted on the intermediate product II and trichlorosilane to obtain an intermediate product III; the intermediate product III reacts with a Grignard reagent II to obtain an intermediate product IV; repeated hydrosilylation reaction is conducted on the intermediate product IV and trichlorosilane to obtain an intermediate product V; and finally, the intermediate product V reacts with methanol or ethanol to prepare the perfluoropolyether siloxane compound. According to the method, high-polymer perfluoropolyether is replaced by low-polymer perfluoropolyether, and meanwhile, the synthesis difficulty and the production cost are reduced. A super-hydrophobic anti-fingerprint coating prepared from the perfluoropolyether siloxane compound prepared by the preparation method disclosed by the invention according to a formula has excellent adhesion with a base material and excellent wear resistance and durability, and can be applied to the industries of mobile phone touch screens, high-end digital products, semiconductors and the like.

Description

technical field [0001] The invention belongs to the technical field of new fluorine-containing polysiloxane materials, and in particular relates to a preparation method of a perfluoropolyether siloxane product and an application of the product in a superhydrophobic anti-fingerprint coating. Background technique [0002] With the in-depth research on hydrophobic coatings, people's requirements for coatings are getting higher and higher. According to different application scenarios, the synthesis of coatings with specific functions has become a trend in the future hydrophobic industry, such as anti-fouling hydrophobic coatings applied to the surface of substrates such as touch screens of digital products, semiconductors, or automobile windshields. This is because substrates such as glass that are often touched are easily contaminated by sweat and stains, and are difficult to clean after being contaminated, and the cleaning process under a specific cleaning agent may scratch th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/336C09D171/02
CPCC08G65/336C09D171/02C08G2650/04
Inventor 李永斌
Owner GANSU HUALONG SEMICON MATERIAL TECH CO LTD
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