Superhydrophobic coating composition and superhydrophobic coating formed therewith

A super-hydrophobic coating and composition technology, applied in the coating composition of super-hydrophobic coating and the field of super-hydrophobic coating, can solve the problem of complex process, high coating curing temperature, poor mechanical properties of super-hydrophobic coating, adhesion, resistance to Impact resistance, soft friction resistance and other issues, to achieve the effect of good adhesion, low curing shrinkage, and high mechanical properties

Inactive Publication Date: 2017-12-19
无锡市耐密特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Superhydrophobic coatings formed by existing technologies have the disadvantages of poor mechanical properties (such as hardness, adhesion, impact resistance, soft friction resistance)
[0007] In addition, the existing methods for forming superhydrophobic coatings have disadvantages such as complicated process and high coating curing temperature.

Method used

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  • Superhydrophobic coating composition and superhydrophobic coating formed therewith
  • Superhydrophobic coating composition and superhydrophobic coating formed therewith
  • Superhydrophobic coating composition and superhydrophobic coating formed therewith

Examples

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Embodiment

[0065] Hereinafter, the present invention will be described in more detail with reference to Examples. However, the present invention is not limited to these examples.

[0066] The epoxy resin used in the embodiment includes: Epoxy Resin E-44 (Sanmu Group, Industrial Grade), Epoxy Resin E-51 (Wuxi Resin Factory)

[0067] The fluorine resin used in the embodiment includes: GK-570 (Daikin), FY-F535C (Guangzhou Fluorine Silicon Technology Co., Ltd.), CC1-3 (Jiaxing Kairui Technology Co., Ltd.), CC1-4 (Jiaxing Kairui Technology Co., Ltd.), WF-Q212 (Wuxi Wanbo Paint Chemical Co., Ltd.), fluororesin F0 (Sinochem Taicang).

[0068] The epoxy resin toughening agent used in the embodiment is epoxy resin toughening agent CYH-277 (Wuda Senmao Fine Chemical Co., Ltd., industrial grade).

[0069] The micro-nano particles used in the embodiment include: Myrica rubra structure particles (self-made, see attached figure 2 , with hydroxyl groups on the surface), clay (Nanocor, 15-20 μm, wit...

preparation example 1

[0073] Preparation Example 1: Preparation of Waxberry Particles

[0074] Such as image 3 As shown, small spheres of 100±20nm and large spheres of 1000±200nm were prepared by the classic Stober sol-gel method. Simply, TEOS was added to aqueous solution containing concentrated ammonia and ethanol, and reacted at 40°C for 2-6h, that is Silica spheres can be obtained, and then 1-5g of silica particles with smaller particle sizes are modified by 0.1-0.6g of silane coupling agent KH550 (Nanjing Shuguang Chemical Group Co., Ltd. Carry out polycondensation reaction with the hydroxyl groups on the surface of silica, and graft amino groups), similarly use 0.1-0.3g of silane coupling agent KH560 (Hangzhou Boiling Chemical Co., Ltd.) to modify 1-5g of silica with larger particle size Particles are grafted with epoxy groups, and the two kinds of particles are redispersed in xylene solvent, placed in an oil bath at 60-80°C for 2-6h, and finally filtered and washed to obtain the carbon dio...

Embodiment 1

[0076] 5.12 g of the myrica rubra structure particles prepared in Preparation Example 1 were dispersed in 15.10 g of n-butanol to obtain an inorganic particle suspension. Dissolve 5.06g of epoxy resin E-44 and 2.11g of epoxy resin toughener CYH-277 in a mixed solvent of 5.03g of n-butanol and xylene (mass ratio is 1:1), then 4.11g of WF-Q212, 1.98g of FY-F535C and 10.01g of CC1-3 were added to the prepared epoxy resin solution, stirred and reacted at 40°C for 2 hours to obtain a hydrophobically modified epoxy resin. Then add the suspension of inorganic particles into the hydrophobically modified epoxy resin solution, add 0.21g defoamer BYK-141 and 0.23g anti-sedimentation agent BYK-410, and filter with 40-100 mesh to get the filtrate A components.

[0077] Dissolve 5.14g of polyamide SF650 in a mixed solvent of 4.96g of n-butanol and xylene (mass ratio 1:1), and add 0.15g of accelerator DMP-30 to obtain component B.

[0078] Mix component A and component B uniformly at a rat...

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Abstract

The invention provides a double-component super-hydrophobic paint composition and a super-hydrophobic coating therewith. The super-hydrophobic paint composition consists of an A component and a B component, wherein the A component includes: an inorganic particle, of which the surface is provided with hydroxyl groups, amino groups, epoxy groups or a combination thereof as reactive groups, a hydrophobically-modified epoxy resin, and an epoxy resin toughening agent; and the B component includes a curing agent. The coating formed by the super-hydrophobic paint composition is excellent in a super-hydrophobic performance and is enhanced in mechanical performances.

Description

technical field [0001] The present invention relates to epoxy-based superhydrophobic coating compositions. More specifically, it relates to a coating composition capable of forming a superhydrophobic coating having excellent superhydrophobic properties and good mechanical properties. The present invention also relates to a superhydrophobic coating formed from the superhydrophobic coating composition. Background technique [0002] Biological surfaces with special wettability in nature, such as lotus leaves, water strider legs, butterfly wings, desert beetle backs, etc. have always provided us with inspiration for designing and preparing new interface materials. structure and modification of low surface energy substances, and prepared a series of superhydrophobic surfaces with self-cleaning effect, that is, the surface of the base material with a static contact angle of water greater than 150° and a rolling angle of less than 10°, which can be used on fabrics, building surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D163/02C09D7/12
CPCC08K3/346C08K3/36C08K2201/003C09D7/61C09D7/70C09D163/00
Inventor 俞浙军杨得全
Owner 无锡市耐密特新材料有限公司
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