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Titanium alloy surface adhesion promoter and preparation method thereof

An adhesion promoter, titanium alloy technology, used in coatings, epoxy resin coatings, etc., can solve the problem of low surface energy of titanium alloys, and achieve the effect of improving surface energy, improving adhesion, and promoting improvement.

Inactive Publication Date: 2019-04-05
中昊北方涂料工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of adhesion promoter for titanium alloy surface and its preparation method, solve the technical problem of low surface energy of titanium alloy, improve the adhesion of coating on titanium alloy

Method used

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  • Titanium alloy surface adhesion promoter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 4.3kg of epoxy resin E-44 and 17.7kg of mixed solvent (xylene: absolute ethanol = 1:1) into the reaction kettle, stir evenly, then heat up to 55°C ± 5°C, under stirring, 7.5kg The silane coupling agent KH-550 is added dropwise to the reaction kettle in 40 minutes. After the dropwise addition, the reaction temperature is controlled at 70-80° C., and the reaction is kept for 4 hours to obtain the adhesion promoter for the titanium alloy surface.

Embodiment 2

[0027] Add 4.3kg of epoxy resin E-44 and 20kg of mixed solvent (xylene: absolute ethanol = 1:1) into the reaction kettle, stir evenly, then heat up to 55°C±5°C, under stirring, 10kg of silane The joint agent KH-270 is added dropwise to the reaction kettle in 60 minutes. After the dropwise addition, the reaction temperature is controlled at 70-80°C, and the reaction is kept for 5 hours to obtain the adhesion promoter product for titanium alloy surface.

Embodiment 3

[0029] Add 4.3kg epoxy resin E-44 and 18.85kg mixed solvent (xylene: absolute ethanol = 1:1) into the reaction kettle, stir evenly, then heat up to 55°C±5°C, under stirring, 3.75kg Silane coupling agent KH-550 and 5kg of silane coupling agent KH-270 are added dropwise to the reaction kettle in 50 minutes. After the dropwise addition, the reaction temperature is controlled at 70-80°C, and the titanium alloy is obtained at 70-80°C for 4.5 hours. Adhesion promoter products for surfaces.

[0030] Implementation Effect

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Abstract

The invention discloses a titanium alloy surface adhesion promoter and a preparation method thereof. The adhesion promoter comprises 25%-30% of silane coupling agents, 12%-15% of epoxy resin and 55%-60% of mixed solvents. Materials are prepared according to the formula, the epoxy resin and the mixed solvents are added into a reactor and uniformly stirred, temperature is increased to 55+ / -5 DEG C,the silane coupling agents are dropped into the reactor within 40-60 minutes under the condition of stirring, reaction temperature is controlled to be within the range of 70-80 DEG C after dropping, and heat reaction is performed for 4-5 hours to obtain the titanium alloy surface adhesion promoter. The adhesion promoter is an organic-inorganic self-curing resin functioning as a bridge between a titanium alloy surface and a coating, the resin facilitates formation of chemical valence bonds by the coating and a base material, surface energy of the titanium alloy base material can be improved, cohesive energy is high, and the adhesion of the coating on a titanium alloy is further improved.

Description

technical field [0001] The invention belongs to the field of titanium alloy surface pretreatment, and in particular relates to an adhesion promoter for titanium alloy surface and a preparation method thereof. Background technique [0002] Titanium alloy is an alloy composed of titanium element and other elements. Titanium is an important structural metal developed in the 1950s. Titanium alloys have a series of characteristics such as strong corrosion resistance, high strength, low density, and stable performance at medium temperatures. With the rapid development of the titanium industry, titanium materials The application fields are also becoming more and more extensive. It was used in the aviation field in the 1950s and 1960s and was known as "air metal"; it was known as "land metal" in the 1970s; and now it is known as "ocean metal". At present, the excellent properties of titanium and titanium alloys have been recognized by countries all over the world, and have been wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/63
CPCC09D7/63C09D163/00C08K5/544
Inventor 李斌张剑飞王进忠张全伟马艳青
Owner 中昊北方涂料工业研究设计院有限公司
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