A kind of dynamic oleophobic siloxane self-enrichment epoxy coating and its preparation method and application

A technology of epoxy coating and siloxane, which is applied in the direction of epoxy resin coating, anti-corrosion coating, fire-proof coating, etc., can solve the problems of oleophobic performance failure, damage surface repellency, easy to be damaged, etc., and achieve good antifouling performance , good repellency, good oil repellency

Active Publication Date: 2021-10-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of such structures is complex and time-consuming, and is often accompanied by defects such as low optical clarity and easy damage; in addition, under sufficient pressure, liquid invasion into the oleophobic surface occurs, which greatly impairs the surface repellency. , resulting in failure of the oleophobic properties

Method used

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  • A kind of dynamic oleophobic siloxane self-enrichment epoxy coating and its preparation method and application
  • A kind of dynamic oleophobic siloxane self-enrichment epoxy coating and its preparation method and application
  • A kind of dynamic oleophobic siloxane self-enrichment epoxy coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The present invention provides the preparation method of the siloxane self-concentration epoxy coating according to the above scheme, which includes the following steps: adding polysiloxane, epoxy resin and 3-aminopropyltriethoxysilane into an organic solvent Condensation reflux is performed to obtain a dynamic oleophobic siloxane self-enriching epoxy coating.

[0038] In the present invention, the temperature of the condensation reflux is preferably 80-110°C, more preferably 85-105°C, and further preferably 90-100°C; the condensation and reflux time is preferably 1-2h, more preferably 1.5 h. The condensation reflux in the present invention is preferably carried out under stirring conditions. The present invention has no special requirements for the stirring conditions, and the stirring conditions well known in the art can be used.

[0039] During the condensation reflux process of the present invention, the epoxy resin undergoes ring opening and crosslinking reaction...

Embodiment 1

[0054] Treatment of glass surface: take a piece of 25mm×25mm glass substrate, ultrasonically clean it in absolute ethanol for 30min, dry it with nitrogen, and finally treat the dried glass piece with a plasma cleaning machine for 4min.

[0055] Preparation of dynamic oleophobic silicone self-concentrating epoxy coating: amino silicone oil: epoxy resin (specifically, bisphenol A type epoxy resin): 3-aminopropyl triethoxysilane: butyl acetate = 0.01 : 1:0.02:2 mass ratio, stir with a magnetic stirrer, condensate and reflux at 90 °C for 1 h, and obtain a dynamic oleophobic siloxane self-concentration epoxy coating.

[0056] Preparation of dynamic oleophobic coating: adding a curing agent (polyetheramine D230, the mass ratio of D230 to epoxy resin is 1:2) into the dynamic oleophobic siloxane self-concentrating epoxy coating, and applying by brushing The treated glass surface is coated with a layer of siloxane self-concentration epoxy coating, and then heated at 120 °C for 30 min t...

Embodiment 2～6

[0058] The only difference from Example 1 is that the glass is replaced with a matrix of other materials, and the specific matrix and contact angle hysteresis are shown in Table 1.

[0059] Table 1 The substrates used in Examples 1-6 and the CAH values ​​of the obtained dynamic oleophobic coatings

[0060]

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Abstract

The invention provides a dynamic oleophobic siloxane self-enrichment epoxy coating and its preparation method and application, belonging to the technical field of polymer materials. The siloxane self-enrichment epoxy coating of the present invention is prepared from raw materials comprising polysiloxane, epoxy resin, 3-aminopropyltriethoxysilane and organic solvent; the epoxy resin, 3-ammonia The mass ratio of propyltriethoxysilane to the organic solvent is (1-10):(0.02-0.1):2; the mass of the polysiloxane is less than 70% of the mass of the epoxy resin. The dynamic oleophobic siloxane self-enrichment epoxy coating provided by the invention has oil repellency, stain resistance, high stability and strong adhesion to various substrates.

Description

technical field [0001] The present invention relates to the technical field of polymer materials, in particular to a dynamic oleophobic siloxane self-enriching epoxy coating and a preparation method and application thereof. Background technique [0002] The surface tension of oily substances is usually very low, so it is difficult to prepare oleophobic surfaces that are not wetted by oily liquids, while the requirement for oleophobic materials in industrial or domestic applications is extremely urgent. Therefore, constructs with low contact angles An oleophobic surface with hysteresis (CAH) is critical. [0003] In general, oleophobic surfaces can be obtained by combining special structures and low surface energy compounds. However, the fabrication of such structures is complex and time-consuming, and is often accompanied by drawbacks such as low optical clarity and susceptibility to damage; additionally, under sufficient pressure, liquid intrusion into the oleophobic surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D183/08C09D183/04C09D5/16C09D5/08C09D7/65C09D7/63
CPCC08L2201/08C08L2201/10C09D5/08C09D5/1687C09D5/18C09D163/00C08L83/08C08L83/04C08K5/544
Inventor 赵杰王洋范勇
Owner JILIN UNIV
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