WO2019006601A1

WO2019006601A1 - Polishing agent, copper part and polishing process therefor

Info

Publication number: WO2019006601A1
Application number: PCT/CN2017/091535
Authority: WO
Inventors: 刘国平
Original assignee: 深圳市宏昌发科技有限公司
Priority date: 2017-07-03
Filing date: 2017-07-03
Publication date: 2019-01-10
Also published as: CN110832043A

Abstract

A polishing agent, a copper part and a polishing process therefor. The polishing agent is used for surface pretreatment of a copper part and comprises the following components in parts by weight: 30-100 parts of sulfuric acid, 50-200 glacial acetic acid, 5-20 parts of potassium nitrate, 1-4 parts of thiourea, 40-150 parts of acetanilide, 20-60 parts of sodium tripolyphosphate, 20-80 parts of polyethylene glycol, and 1000 parts of water. Processed with the above polishing agent, the surface of a copper part is clean and bright, and the polishing process is simple, safe and environmentally friendly, odorless, convenient to operate and low-cost.

Description

Polishing agent, copper piece and polishing treatment method thereof

[0001] The present invention relates to the field of iron surface treatment technology, and in particular, to a polishing agent, a copper member, and a polishing treatment method thereof.

Background technique

[0002] In order to improve the surface properties or appearance of a product, the surface treatment technology of the workpiece is usually applied. For example, the surface treatment processes of copper, aluminum, iron and their alloys are well-established in a wide range of industries. Moreover, most workpieces require pre-treatment before surface treatment, for example, cleaning, decontamination and degreasing, and metal workpieces for certain applications need to be polished.

[0003] Generally in the mechanical processing and electrical and electronic industries, copper and copper alloys are commonly cleaned and polished, that is, polished. Conventional polishing agents generally use mechanical polishing or tri-acid polishing. Among them, mechanical polishing has a poor polishing effect on the complex geometry of the workpiece. The tri-acid in the tri-acid polishing is concentrated sulfuric acid, concentrated nitric acid, and concentrated phosphoric acid reacts violently under high temperature conditions. The gas volatilizes very much, is not safe and is not environmentally friendly.

technical problem

[0004] In view of the above, a polishing agent which is safe, environmentally friendly, and easy to operate at a normal temperature, and a copper member polishing method and a copper member obtained by polishing are provided.

Problem solution

Technical solution

[0005] A polishing agent comprising the following components by weight: 30-100 parts of sulfuric acid, 50-200 parts of glacial acetic acid, 5-20 parts of potassium nitrate, 1-4 parts of thiourea, 40-150 parts of acetanilide, 20 - 60 parts of sodium tripolyphosphate, 20-80 parts of polyethylene glycol and 1000 parts of water.

A copper member polishing treatment method comprising the steps of: formulating a polishing agent as described above; immersing the copper member in a polishing agent, and washing the copper member after a predetermined inter-turn treatment.

[0007] Also, a copper member whose surface is polished by a copper member polishing treatment method as described above.

Advantageous effects of the invention

Beneficial effect [0008] After the above polishing agent treatment, the surface of the copper piece is clean and bright, and the whole polishing treatment method is simple, safe and environmentally friendly, odorless, convenient to operate, and low in use cost.

Embodiments of the invention

The present invention will be described in detail below with reference to specific embodiments.

[0010] Embodiments of the present invention provide a polishing agent for surface pretreatment of copper parts, comprising the following components by weight: 30-100 parts of sulfuric acid, 50-200 parts of glacial acetic acid, 5-20 parts of potassium nitrate, 1- 4 parts of thiourea, 40-150 parts of acetanilide, 20-60 parts of sodium tripolyphosphate, 20-80 parts of polyethylene glycol and 1000 parts of water.

[0011] Specifically, the sulfuric acid is in a range of 40 to 80 parts by weight. The weight fraction of the glacial acetic acid is preferably 100-20

0 parts by weight, the potassium nitrate is preferably 10-20 parts by weight, and the thiourea is preferably 2-4 parts by weight.

. The acetanilide preferably has a weight fraction of 50 to 130 parts, and the weight fraction of the sodium tripolyphosphate is preferably

The amount by weight of the polyethylene glycol is preferably 30 to 70 parts by weight of 30 to 50 parts.

[0012] In the above polishing agent, a better polishing effect is achieved by controlling the balance of the respective distribution ratios. Sulfuric acid, ice acetic acid is the main reaction component of polishing, potassium nitrate and sodium tripolyphosphate are auxiliary polishing, and thiourea prevents the reaction too fast.

, polyethylene glycol and acetanilide make the workpiece evenly polished.

[0013] Embodiments of the present invention also provide a copper member polishing treatment method, comprising the steps of: preparing a polishing agent as described above; immersing the copper member in a polishing agent solution, and after washing the copper material, after a predetermined daytime treatment, Dry

[0014] Specifically, the predetermined time interval is 1-10 minutes. Further, after polishing, it is passivated, then washed with water and dried. After polishing, the temperature is controlled at 20 ° C - 25 ° C, that is, polishing at room temperature. Further, pretreatment such as degreasing and degreasing is performed before polishing.

[0015] After the above polishing agent treatment, the surface of the copper piece is clean and bright, and the entire polishing process is simple

, safe and environmentally friendly, odorless, easy to operate, low cost of use.

[0016] Embodiments of the present invention also provide a copper member which is subjected to a polishing treatment by a copper member polishing treatment method as described above to form a copper member to form a clean and bright surface.

[0017] Embodiment 1

[0018] The ingredients are mixed according to the following parts by weight: 30 parts of sulfuric acid, 50 parts of glacial acetic acid, 5 parts of potassium nitrate, 1 part of thiourea

40 parts of acetanilide, 20 parts of sodium tripolyphosphate, 20 parts of polyethylene glycol and 1000 parts of water. [0019] Treatment method: preparing a polishing agent; the copper piece should first remove the oil and descaling, then wash the water, and then immerse the treated copper piece in the polishing agent solution, after shaking for 10 minutes by the vibration machine, wash the copper piece, Repassivation, washing, drying.

[0020] After the above polishing agent solution is treated, the surface of the workpiece is observed, the entire surface is clean and bright, the color is uniform, and the brightness is increased by more than 30% than before polishing.

Embodiment 2

[0022] The ingredients are mixed according to the following parts by weight: 50 parts of sulfuric acid, 100 parts of glacial acetic acid, 10 parts of potassium nitrate, 2 parts of thiourea, 80 parts of acetanilide, 30 parts of sodium tripolyphosphate, 40 parts of polyethylene glycol and 1000 parts Water.

[0023] Treatment method: preparing a polishing agent; the copper piece should be degreased and descaled, then washed, and then the treated copper piece is immersed in the polishing agent solution, and after being shaken for 10 minutes by the vibration machine, the copper piece is washed. Repassivation, washing, drying.

[0024] After the above polishing agent solution treatment, the surface of the workpiece is observed, the entire surface is clean and bright, the color is uniform, and the brightness is increased by more than 50% than before polishing.

Embodiment 3

[0026] The ingredients are mixed in the following parts by weight: 80 parts of sulfuric acid, 150 parts of glacial acetic acid, 15 parts of potassium nitrate, 3 parts of thiourea, 120 parts of acetanilide, 45 parts of sodium tripolyphosphate, 50 parts of polyethylene glycol and 1000 parts Water.

[0027] Treatment method: preparing the polishing agent; the copper parts should first remove the oil and descaling, then wash the water, and then immerse the treated copper parts in the polishing agent solution, after shaking for 5 minutes by the vibration machine, wash the copper parts, Repassivation, washing, drying.

[0028] After the above polishing agent solution treatment, the surface of the workpiece is observed, the entire surface is clean and bright, the color is uniform, and the brightness is increased by more than 70% before polishing.

Embodiment 4

[0030] The ingredients are mixed in the following parts by weight: 100 parts sulfuric acid, 200 parts glacial acetic acid, 20 parts potassium nitrate, 4 parts thiourea, 150 parts acetanilide, 60 parts sodium tripolyphosphate, 80 parts polyethylene glycol and 1000 parts Water.

[0031] Treatment method: preparing a polishing agent; the copper piece should be degreased and descaled, then washed, and then the treated copper piece is immersed in the polishing agent solution, and after being shaken for 3 minutes by the vibration machine, the copper piece is washed. Repassivation, washing, drying.

[0032] After the above polishing agent solution is processed, the surface of the workpiece is observed, and the entire surface is clean and bright, and the color is uniform. Brightness is increased by more than 70% compared to before polishing.

It should be noted that the present invention is not limited to the above embodiments, and other changes can be made by those skilled in the art according to the inventive spirit of the present invention. These changes according to the inventive spirit of the present invention should be included in the present invention. Within the scope of the claimed invention.

Claims

Claim

[Claim 1] A polishing agent comprising the following components by weight: 30-100 parts of sulfuric acid,

50-200 parts glacial acetic acid, 5-20 parts potassium nitrate, 1-4 parts thiourea, 40-150 parts acetanilide, 20-60 parts sodium tripolyphosphate, 20-80 parts polyethylene glycol and 1000 parts water.

[Claim 2] The polishing agent according to claim 1, wherein the sulfuric acid is 40 parts by weight

80 copies. .

[Claim 3] The polishing agent according to claim 1, wherein the glacial acetic acid is 1 part by weight

00-200 servings.

[Claim 4] The polishing agent according to claim 1, wherein the potassium nitrate has a weight fraction of 1

0-20 parts.

[Claim 5] The polishing agent according to claim 1, wherein the thiourea is in an amount of 2 to 4 parts by weight.

[Claim 6] The polishing agent according to claim 1, wherein the acetanilide has a weight fraction of 50 to 130 parts.

[Claim 7] The polishing agent according to claim 1, wherein the sodium tripolyphosphate is 30-50 parts by weight, and the polyethylene glycol is 30-70 parts by weight. .

[Claim 8] A copper member polishing treatment method, comprising the steps of: formulating the polishing agent according to any one of claims 1 to 7; immersing the copper member in a polishing agent, and performing predetermined daytime processing After that, wash the copper pieces.

[Claim 9] The copper member polishing method according to claim 8, wherein the workpiece is immersed in a polishing agent, and the predetermined turn is 1-10 minutes.