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Silane coupling agent hydrolysate, as well as preparation method and application thereof

A technology of silane coupling agent and hydrolyzate, which is applied in the field of silane coupling agent hydrolyzate and its preparation, can solve the problems of less anticorrosion research on metal iron, achieve good anticorrosion effect, stable performance, and simplify the process

Active Publication Date: 2015-04-01
GUANGZHOU GEMBOND CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the existing literature reports, due to the consideration of the stability of the hydrolyzed solution of the silane coupling agent, the concentration of the silane coupling agent is usually low, and most of them are aimed at the corrosion protection of aluminum and aluminum alloys. There are few anti-corrosion studies

Method used

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  • Silane coupling agent hydrolysate, as well as preparation method and application thereof
  • Silane coupling agent hydrolysate, as well as preparation method and application thereof
  • Silane coupling agent hydrolysate, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A kind of silane coupling agent hydrolyzate of the present embodiment comprises the raw material of following weight portion:

[0063] 40 parts of silane coupling agent

[0064] 40 parts of water

[0065] 20 parts of ethanol,

[0066] Adjust the pH of the hydrolyzate of the silane coupling agent to 4.0, and the silane coupling agent is BTSE.

[0067] The preparation method of above-mentioned silane coupling agent hydrolyzate comprises the steps:

[0068] Mix the silane coupling agent, alcohol and water in parts by weight, adjust the pH value to 4.0, stir at 30° C. for 10 h until the system is clear and transparent, and obtain the hydrolyzed solution of the silane coupling agent.

[0069]The silane coupling agent hydrolyzate can be stored at room temperature for 50 hours without gelling; the polished tinplate sheet is immersed in it for 30 seconds, dried, and dried at 120°C for 30 minutes, and it can withstand the salt spray accelerated corrosion test for 48 hours.

Embodiment 2

[0071] A kind of silane coupling agent hydrolyzate of the present embodiment comprises the raw material of following weight portion:

[0072] 40 parts of silane coupling agent

[0073] 60 parts of water,

[0074] Adjust the pH of the hydrolyzate of the silane coupling agent to 5.0, and the silane coupling agent is KH-560.

[0075] The preparation method of above-mentioned silane coupling agent hydrolyzate comprises the steps:

[0076] Mix the silane coupling agent and water in parts by weight, adjust the pH value to 5.0, stir at 30° C. for 20 h until the system is clear and transparent, and obtain the hydrolyzed solution of the silane coupling agent.

[0077] The silane coupling agent hydrolyzate can be stored at room temperature for 30 days without gelling; the polished tinplate sheet is immersed in it for 30 seconds, dried, and dried at 120°C for 30 minutes, and it can withstand the salt spray accelerated corrosion test for 20 hours.

Embodiment 3

[0079] A kind of silane coupling agent hydrolyzate of the present embodiment comprises the raw material of following weight portion:

[0080] 10 parts of silane coupling agent

[0081] 40 parts of water

[0082] 20 parts of ethanol,

[0083] Adjust the pH of the hydrolyzate of the silane coupling agent to 6.5, and the silane coupling agent is KH-550.

[0084] The preparation method of above-mentioned silane coupling agent hydrolyzate comprises the steps:

[0085] Mix the silane coupling agent, alcohol and water in parts by weight, adjust the pH value to 6.5, and the system is clear and transparent, thus obtaining the hydrolyzed solution of the silane coupling agent.

[0086] The hydrolyzate of the silane coupling agent can be stored at room temperature for 5 hours without gelling; the polished tinplate sheet is immersed in it for 30 seconds, dried, and dried at 180°C for 30 minutes, and it can withstand the salt spray accelerated corrosion test for 10 hours.

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Abstract

The invention discloses a silane coupling agent hydrolysate, as well as a preparation method and an application thereof. The hydrolysate is prepared from the following raw materials in parts by weight: 10-60 parts of a silane coupling agent, 40-90 parts of water, 0-2 parts of polyol and 0-20 parts of alcohol; the pH value of the hydrolysate is regulated to be 3.5-6.5; and the silane coupling agent is selected from gamma-(2,3-epoxypropoxy)propyl]trimethoxysilane, 3-aminopropyltriethoxysilane, gamma-methacryloxypropyltrimethoxysilane,1,2-bis(triethoxysilyl)ethane and N-(amino-ethyl)-amino-propyl trimethoxy silane, or has the structural characteristics of formulae (I), (II) and (III) as shown in the specification. Metal, especially iron, has excellent anti-corrosive effect when the silane coupling agent hydrolysate is directly applied to the surface of the metal.

Description

technical field [0001] The invention relates to the field of metal pretreatment, in particular to a silane coupling agent hydrolyzate and its preparation method and application. Background technique [0002] As the disadvantages of traditional metal pretreatment technology such as environmental pollution and high energy consumption are increasingly unacceptable, silane coupling agent pretreatment technology has achieved great development. This technology is to immerse the metal to be treated in the silane coupling agent hydrolyzate and then take it out and dry it to complete the pretreatment process. Compared with the traditional phosphating and zinc-chromium coating treatment methods, the operation process of this method is simple and green. It is environmentally friendly and can significantly improve the bonding force between metal and paint. [0003] On this basis, scholars at home and abroad have also put forward higher requirements for the silane coupling agent hydroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/04
Inventor 刘海峰李天龙杨番张涛
Owner GUANGZHOU GEMBOND CHEM
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