Composite coating and preparation method and application thereof

A composite coating and composite liquid technology, used in coatings, anti-corrosion coatings, natural resin coatings, etc., can solve problems such as unfavorable corrosion protection of metal substrates, affecting the uniformity and compactness of film layers, and achieve the scope of application of monomers The effect of wide, high density and excellent anti-corrosion performance

Inactive Publication Date: 2020-06-02
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the traditional organic anti-corrosion film preparation methods include dipping, brushing, spraying, etc. These traditional film-making methods often cause some pores and cracks in the film, which greatly affects the uniformity and compactness of the film layer, which is not conducive to the metal substrate. corrosion protection

Method used

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  • Composite coating and preparation method and application thereof
  • Composite coating and preparation method and application thereof
  • Composite coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Component A: Dissolve 10 g of urushiol in absolute ethanol (90 g), and component B: add 20 g of distilled water to absolute ethanol (90 g). Slowly add all the above component B to the above component A, stir well for 20min, then add 10g TiO2 dropwise 2 The aqueous sol was stirred at room temperature for 2h 15min, and prepared into urushiol / nano-TiO 2 compound fluid. The prepared composite liquid is poured into a 100ml beaker for electrochemical polymerization (constant voltage about 130V) experiment, and the electrochemical polymerization device is as figure 1 As shown, get as figure 2 Nano-TiO with the structure shown 2 Polyurshiol / TiO with a mass fraction of 0.2% 2 Composite coating, recorded as UT0.2.

Embodiment 2

[0050] Component A: Dissolve 10 g of urushiol in absolute ethanol (90 g), and component B: add 20 g of distilled water to absolute ethanol (90 g). Slowly add component B to component A dropwise, stir well for 20min, then add 15gTiO2 dropwise 2 The aqueous sol was stirred at room temperature for 2h 15min, and prepared into urushiol / nano-TiO 2 compound fluid. Pour the prepared composite solution into a 100ml beaker for electrochemical polymerization (constant voltage about 130V) experiment to obtain nano TiO 2 Polyurshiol / TiO with a mass fraction of 0.5% 2 Composite coating, recorded as UT0.5.

Embodiment 3

[0052]Component A: Dissolve 10 g of urushiol in absolute ethanol (90 g), and component B: add 20 g of distilled water to absolute ethanol (90 g). Slowly add component B to component A dropwise, stir well for 20min, then add 20g TiO2 dropwise 2 The aqueous sol was stirred at room temperature for 2h 15min to prepare urushiol / nano-TiO 2 compound fluid. Pour the prepared composite solution into a 100ml beaker for electrochemical polymerization (constant voltage about 130V) experiment to obtain nano TiO 2 1% poly urushiol / TiO 2 Composite coating, recorded as UT1.0.

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Abstract

The invention discloses a composite coating and a preparation method and application thereof. The composite coating comprises polyurushiol and nano titanium dioxide, wherein the nano titanium dioxideis embedded into the polyurushiol. The polyurushiol and nano TiO2 composite coating subjected to electrochemical polymerization is compact and uniform in structure and has excellent corrosion resistance. The introduction of nano TiO2 improves the mechanical properties, thermal properties and the like of the coating.

Description

technical field [0001] The application relates to a composite coating, its preparation method and application, and belongs to the technical field of coatings. Background technique [0002] Urushiol, the main component of raw lacquer, has a content of 40-70%. It is a mixture of several derivatives of catechol with unsaturated branched chains. It has excellent corrosion resistance, acid and alkali resistance, heat resistance, self-drying properties, etc. It has a certain market in special anti-corrosion paints. [0003] Due to its excellent mechanical properties and processing properties, carbon steel materials have become important structural materials and are used in the entire industrial field. However, carbon steel materials are prone to corrosion during use, especially in acidic and neutral environments, which not only causes serious economic losses, but also causes a large number of safety problems. Therefore, the corrosion protection of carbon steel materials is incre...

Claims

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Application Information

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IPC IPC(8): C09D193/00C09D7/61C09D5/08
CPCC08K2003/2241C08K2201/011C09D5/08C09D193/00C09D7/61
Inventor 林棋陆畅夏建荣张于弛
Owner MINJIANG UNIV
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