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Metal surface silane treatment agent and preparation method thereof

A technology of silane treatment agent and metal surface, which is applied in the direction of coating, anti-corrosion coating, etc., can solve the problems of uneven film formation of silanization treatment agent, poor adhesion of film coating, weak corrosion resistance, etc., and achieve film formation Good effect, strong coating adhesion and strong corrosion resistance

Active Publication Date: 2018-07-20
宁波际超新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a pre-treatment film agent, the silanization agent must be hydrolyzed first, and then polymerized to form a film on the metal surface, thereby protecting the metal surface. However, the silane agent in the prior art has the disadvantage of poor stability. The polycondensation reaction has occurred before the film, resulting in loss, which makes the film formation of the silanization treatment agent on the metal surface uneven, and the corrosion resistance is not strong. The coating adhesion is poor, and even the whole piece may fall off

Method used

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  • Metal surface silane treatment agent and preparation method thereof
  • Metal surface silane treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh the following raw materials in parts by weight: Component A: 4 parts of γ-aminopropyl triethoxysilane, 1 part of γ-glycidyl etheroxypropyl trimethoxysilane, 1 part of γ-chloropropyl triethoxy 0.2 parts of silane, 0.4 parts of methyltriethoxysilane, 0.1 part of benzotriazole, 6 parts of polyol, 1 part of methanol, 90 parts of water; component B: γ-aminopropyltriethoxysilane 12 Parts, 0.2 parts of γ-chloropropyl triethoxysilane, 0.2 parts of N-(β-aminoethyl)-γ-aminopropyl triethoxysilane, 10 parts of polyols, 60 parts of water; standby,

[0051] Prepare as follows:

[0052] (1) Preparation of component A: first weigh γ-aminopropyltriethoxysilane, γ-glycidyl etheroxypropyltrimethoxysilane, γ-chloropropyltriethoxysilane, methyl Add triethoxysilane into water and stir until it is completely hydrolyzed; then add polyols and methanol and stir evenly; finally add benzotriazole and stir until the solution is clear to obtain component A.

[0053] (2) Preparation of compon...

Embodiment 2

[0056]Weigh the following raw materials in parts by weight: Component A: 5 parts of γ-aminopropyl triethoxysilane, 1.5 parts of γ-glycidyl etheroxypropyl trimethoxysilane, γ-chloropropyl triethoxy 0.3 parts of silane, 0.6 parts of methyltriethoxysilane, 0.15 parts of benzotriazole, 7 parts of polyol, 95 parts of water; component B: 13 parts of γ-aminopropyl triethoxysilane, γ- 0.3 parts of chloropropyl triethoxysilane, 0.3 parts of N-(β-aminoethyl)-γ-aminopropyl triethoxysilane, 11 parts of polyols, 65 parts of water; spare,

[0057] The preparation method is the same as in Example 1.

[0058] When using, mix component A and component B according to the weight ratio of 1:0.9, and then use it.

Embodiment 3

[0060] Weigh the following raw materials in parts by weight: Component A: 7 parts of γ-aminopropyl triethoxysilane, 2 parts of γ-glycidyl etheroxypropyl trimethoxysilane, γ-chloropropyl triethoxy 0.5 parts of silane, 0.8 parts of methyltriethoxysilane, 0.2 parts of benzotriazole, 9 parts of polyols, 2 parts of methanol, 100 parts of water; component B: 15 parts of γ-aminopropyltriethoxysilane , 0.5 parts of γ-chloropropyl triethoxysilane, 0.5 parts of N-(β-aminoethyl)-γ-aminopropyl triethoxysilane, 13.5 parts of polyol, 2 methanol, 70 parts of water; spare ,

[0061] The preparation method is the same as in Example 1.

[0062] When using, mix component A and component B according to the weight ratio of 1:1, and then use it.

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Abstract

The invention discloses a metal surface silane treatment agent and a preparation method thereof, and relates to the technical field of metal surface treatment. The silane treatment agent is prepared from a component A and a component B, and the component A comprises, by weight, 4-10 parts of gamma-aminopropyltriethoxysilane, 1-3 parts of gamma-glycidyloxypropyltrimethoxysilane, 0.2-0.8 part of gamma-chloropropyltriethoxysilane, 0.4-1.2 parts of methyltriethoxysilane, 0.1-0.3 part of benzotriazole, 6-12 parts of polyol and 90-110 parts of water; and the component B comprises, by weight, 12-18 parts of gamma-aminopropyltriethoxysilane, 0.2-0.8 part of gamma-chloropropyltriethoxysilane, 0.2-0.8 part of N-(beta-aminoethyl)-gamma-aminopropyltriethoxysilane, 10-17 parts of polyol and 60-80 partsof water, and a weight ratio of the component A to the component B is 1:(0.8-1.25). The silane treatment agent has a good stability, a film formed on the metal surface is stable and uniform, and thepolycondensation reaction of the silane treatment agent does not occur in advance, so the defects of poor stability and polycondensation loss before film formation of silane coupling agents in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a silane treatment agent for metal surface pre-treatment. Background technique [0002] In metal surface treatment, the quality of substrate surface treatment not only determines whether the subsequent coating treatment can be carried out, but also significantly affects the adhesion, appearance and corrosion resistance of the coating. Traditional phosphating and chromate passivation treatment are the most common metal surface pretreatment methods. The combination of phosphate and chromate coatings with the substrate and corrosion resistance are very good. However, the surface treatment agent and the discharged waste liquid are both Contains zinc, manganese, nickel, chromium and other heavy metal ions and carcinogens such as nitrite, which is very serious to environmental pollution. In addition, phosphating treatment and chromate passivation treatment require heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/08C09D7/63C08G77/26C08G77/06
CPCC08G77/06C08G77/26C08K5/05C08K5/3475C09D5/08C09D183/08
Inventor 李啸春李春山校新克彭志坤李春超
Owner 宁波际超新材料科技有限公司
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