Silane treating agent and preparation method thereof

The technology of a silane treatment agent and a silane coupling agent is applied in the direction of metal material coating process, etc., which can solve problems such as poor anti-corrosion performance, and achieve the effects of stable performance, dense and uniform polarization current density, and simple preparation.

Inactive Publication Date: 2017-11-07
浙江裕辉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

[0003] The Chinese patent with the publication number CN103088335A discloses a metal surface modified silane treatment agent and a preparation method thereof, but the protective film formed by the metal surface modified silane treatment agent on the metal surface has poor corrosion resistance to metals and needs to be improved

Method used

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  • Silane treating agent and preparation method thereof

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Effect test

Embodiment 1

[0036] A silane treatment agent, each component of its composition raw material is composed as follows according to parts by weight:

[0037] KH560 2 copies;

[0038] Phytic acid 2 parts;

[0039] 8 parts of sodium nitrate;

[0040] Sodium molybdate 4 parts;

[0041] 70 parts of deionized water;

[0042] Formic acid was also included to adjust the pH of the solution to 4-5.

[0043] A preparation method of silane treatment agent, comprising the following steps:

[0044] Step 1: Add 2 parts of KH560 to 70 parts of deionized water and hydrolyze for 3 hours;

[0045] Step 2: Add 2 parts of phytic acid, 8 parts of sodium nitrate, and 3 parts of sodium molybdate in sequence and keep stirring for 20 minutes;

[0046] Step 3: When using a pH detector to monitor the pH value of the mixed solution in step 3 in real time, continuously add formic acid to the mixed solution in step 2 until the pH value of the mixed solution is adjusted to 4.0-5.0.

Embodiment 2

[0048] A silane treatment agent, each component of its composition raw material is composed as follows according to parts by weight:

[0049] KH560 3 copies;

[0050] 3 parts of phytic acid;

[0051] 10 parts of sodium nitrate;

[0052] 5 parts of sodium molybdate;

[0053] 80 parts of deionized water;

[0054] Formic acid was also included to adjust the pH of the solution to 4-5.

[0055] A preparation method of silane treatment agent, comprising the following steps:

[0056] Step 1: Add 3 parts of KH560 to 80 parts of deionized water and hydrolyze for 3 hours;

[0057] Step 2: Add 3 parts of phytic acid, 10 parts of sodium nitrate, and 5 parts of sodium molybdate in sequence and keep stirring for 20 minutes;

[0058] Step 3: When using a pH detector to monitor the pH value of the mixed solution in step 3 in real time, continuously add formic acid to the mixed solution in step 2 until the pH value of the mixed solution is adjusted to 4.0-5.0.

Embodiment 3

[0060] A silane treatment agent, each component of its composition raw material is composed as follows according to parts by weight:

[0061] KH560 4 copies;

[0062] Phytic acid 4 parts;

[0063] 12 parts of sodium nitrate;

[0064] Sodium molybdate 6 parts;

[0065] 90 parts of deionized water;

[0066] Formic acid was also included to adjust the pH of the solution to 4-5.

[0067] A preparation method of silane treatment agent, comprising the following steps:

[0068] Step 1: Add 4 parts of KH560 to 90 parts of deionized water and hydrolyze for 3 hours;

[0069] Step 2: Add 4 parts of phytic acid, 12 parts of sodium nitrate and 6 parts of sodium molybdate in sequence and keep stirring for 20 minutes;

[0070] Step 3: When using a pH detector to monitor the pH value of the mixed solution in step 3 in real time, continuously add formic acid to the mixed solution in step 2 until the pH value of the mixed solution is adjusted to 4.0-5.0.

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Abstract

The invention discloses a silane treating agent and a preparation method thereof. The silane treating agent comprises, by weight, 2-5 parts of a silane coupling agent, 2-5 parts of phytic acid, 8-14 parts of nitrate, 4-7 parts of molybdate and 70-100 parts of water. The silane treating agent prepared through the method has the beneficial effects of being stable in performance and free of poison and pollution. After the silane treating agent prepared through the method is utilized for treating a metal workpiece, a film layer formed on the metal surface has the beneficial effects of being excellent in adhesive force, compact, uniform and low in polarization current density. The defects of existing metal surface pretreatment are overcome, and therefore the silane treating agent can be applied to metal surface pretreatment better.

Description

technical field [0001] The invention relates to a metal surface treatment agent, more specifically to a silane treatment agent and a preparation method thereof. Background technique [0002] One of the main reasons for the electrochemical corrosion of metals is that the metal surface is in contact with the electrolyte solution or the humid atmosphere, and various corrosion primary cells are produced to corrode the metal. Accordingly, the metal surface can be isolated from the corrosive environment by changing the state of the metal surface to prevent corrosion. The silane treatment agent is a treatment agent for metal surface treatment, which does not produce sediment during use, and the treatment time is much shorter than the traditional phosphating treatment. When the silane treatment agent is controlled for treatment, the bath solution can be reused, thereby increasing the economic benefits of the silane treatment agent. At the same time, the silane treatment agent also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/40
CPCC23C22/40C23C2222/20
Inventor 黄俊豪
Owner 浙江裕辉新材料科技有限公司
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