CN112609183A - LED aluminum surface etching liquid medicine with protection function and preparation method thereof - Google Patents

Abstract

The invention belongs to the field of LED aluminum substrate etching, and particularly discloses an LED aluminum surface etching liquid medicine with a protection function and a preparation method thereof, wherein the etching liquid medicine is prepared from the following raw materials in parts by weight: 100 parts of ammonia water, 40-60 parts of potassium phosphate, 30-50 parts of hydrogen peroxide, 15-25 parts of sodium carbonate, 10-20 parts of ethylene diamine tetraacetic acid, 8-12 parts of potassium sodium tartrate, 8-12 parts of isopropanol, 5-10 parts of sodium gluconate, 4-8 parts of vulcanization accelerator, 4-8 parts of surfactant and 3-6 parts of oxidant. The LED aluminum surface etching liquid disclosed by the invention can quickly etch the copper clad surface to form a circuit without damaging the aluminum base layer and adding an aluminum protective layer, and has the advantages of simple etching process and high efficiency.

Description

LED aluminum surface etching liquid medicine with protection function and preparation method thereof

Technical Field

The invention belongs to the field of LED aluminum substrate etching, and particularly discloses an LED aluminum surface etching liquid medicine with a protection function and a preparation method thereof.

Background

A light Emitting diode (led), which is a solid semiconductor device capable of converting electrical energy into visible light, can directly convert electricity into light. The heart of the LED is a semiconductor wafer, one end of the wafer is attached to a support, the other end of the wafer is a cathode, and the other end of the wafer is connected with an anode of a power supply, so that the whole wafer is packaged by epoxy resin. The LED illuminating lamp can be produced by utilizing the light emitting principle of an LED, the LED illuminating lamp mainly comprises a high-power white light LED single lamp, and the quality of LED illuminating lamp manufacturers in the first three of the world is guaranteed for three years, wherein large particles are larger than or equal to 100 lumens per watt, and small particles are larger than or equal to 110 lumens per watt. The light attenuation large particles are less than 3% per year, and the light attenuation small particles are less than 3% per year. LED solar street lamps, LED projection lamps, LED ceiling lamps and LED fluorescent lamps can be produced in batches. Like most electronic devices, heat is also the biggest threat to LEDs. Although most people believe that an LED does not generate heat, the amount of heat generated by an LED is substantial relative to its volume. Heat not only affects the brightness of the LED, but also changes the color of the light, eventually leading to LED failure, and therefore, it is becoming increasingly important to prevent heat accumulation in the LED. The key to maintaining the continuous high brightness of LEDs for a long time is to use the most advanced thermal management materials, one of which is the use of aluminum substrates with high thermal conductivity. The aluminum substrate is a metal-based copper-clad plate with good heat dissipation function, and a single-sided board generally comprises a three-layer structure, namely a circuit layer (copper foil), an insulating layer and a metal base layer. The circuit of LED lamp will be etched at the circuit layer, also cover the copper layer promptly, but in the time of the etching, must consider can not destroy the insulating layer, and erode the aluminium basic unit, consequently, traditional alkali liquid medicine must paste the protection film, and this has LED to the complicacy of technology, and speed reduction and cost's improvement need look for one kind urgently and is good to aluminium base board corrosivity, the efficient etching liquid medicine of etching simultaneously.

Disclosure of Invention

Aiming at the defects, the invention discloses an LED aluminum surface etching liquid medicine with a protection function and a preparation method thereof.

The technical scheme of the invention is as follows:

an LED aluminum surface etching liquid medicine with a protection function is composed of the following raw materials in parts by weight:

further, the LED aluminum surface etching liquid medicine with the protection function is composed of the following raw materials in parts by weight;

further, the vulcanization accelerator is 2-mercaptobenzothiazole.

Further, the above LED aluminum surface etching solution with a protection function, the surfactant is prepared from sodium stearyl sulfate: alkyl glucoside in a 1:1 molar ratio.

Further, the LED aluminum surface etching liquid with the protection function is characterized in that the oxidant is one selected from perchlorate, permanganate and dichromate.

Further, the LED aluminum surface etching liquid medicine with the protection function is prepared by using potassium permanganate as the oxidant.

Further, the preparation method of the LED aluminum surface etching liquid medicine with the protection function comprises the following steps:

s, fully mixing ammonia water and hydrogen peroxide at the temperature of 1.0-4 ℃ under the reduced pressure condition;

s2, sequentially adding potassium phosphate, sodium carbonate, disodium ethylene diamine tetraacetate and potassium sodium tartrate according to the formula ratio at normal temperature, and storing in a sealed and light-proof manner;

s3, adding the isopropanol, the sodium gluconate, the vulcanization accelerator and the surfactant according to the formula ratio within 30min before use, and fully mixing.

According to the technical scheme, the invention has the following beneficial effects: the invention provides an LED aluminum surface etching liquid medicine with a protection function, which is researched by the company for many years, and the fact that when a vulcanization accelerator and a surfactant are added into a common LED etching liquid medicine, particularly when the vulcanization accelerator is 2-mercaptobenzothiazole, the etching capability of the etching liquid medicine on an aluminum substrate can be greatly reduced, and the etching of the etching liquid medicine on a copper coating layer is not influenced; by the method, the concentration of the etching liquid medicine can be conveniently increased without considering the adverse effect on the aluminum substrate, so that the etching speed of the copper coating is greatly increased, and the production efficiency is greatly improved.

Detailed Description

The present invention is further illustrated by the following detailed description, wherein the processes are conventional unless otherwise specified, and the starting materials are commercially available from a public perspective unless otherwise specified.

Example 1

An LED aluminum surface etching liquid medicine with a protection function is characterized by comprising the following raw materials in parts by weight:

the vulcanization accelerator is 2-mercaptobenzothiazole;

the surfactant is prepared from sodium octadecyl sulfate: alkyl glucoside in a 1:1 molar ratio;

the oxidant is selected from potassium perchlorate;

the preparation method of the LED aluminum surface etching liquid medicine comprises the following steps:

s, fully mixing ammonia water and hydrogen peroxide at the temperature of 1.0-4 ℃ under the reduced pressure condition;

s2, sequentially adding potassium phosphate, sodium carbonate, disodium ethylene diamine tetraacetate and potassium sodium tartrate according to the formula ratio at normal temperature, and storing in a sealed and light-proof manner;

s3, adding the isopropanol, the sodium gluconate, the vulcanization accelerator and the surfactant according to the formula ratio within 30min before use, and fully mixing.

Example 2

An LED aluminum surface etching liquid medicine with a protection function is composed of the following raw materials in parts by weight;

the vulcanization accelerator is 2-mercaptobenzothiazole;

the surfactant is prepared from sodium octadecyl sulfate: alkyl glucoside in a 1:1 molar ratio;

the oxidant is selected from potassium permanganate;

the preparation method of the LED aluminum surface etching liquid medicine comprises the following steps:

s, fully mixing ammonia water and hydrogen peroxide at the temperature of 1.0-4 ℃ under the reduced pressure condition;

s2, sequentially adding potassium phosphate, sodium carbonate, disodium ethylene diamine tetraacetate and potassium sodium tartrate according to the formula ratio at normal temperature, and storing in a sealed and light-proof manner;

s3, adding the isopropanol, the sodium gluconate, the vulcanization accelerator and the surfactant according to the formula ratio within 30min before use, and fully mixing.

Example 3

An LED aluminum surface etching liquid medicine with a protection function is characterized by comprising the following raw materials in parts by weight:

the vulcanization accelerator is 2-mercaptobenzothiazole;

the surfactant is prepared from sodium octadecyl sulfate: alkyl glucoside in a 1:1 molar ratio;

the oxidant is selected from potassium dichromate;

the preparation method of the LED aluminum surface etching liquid medicine comprises the following steps:

s, fully mixing ammonia water and hydrogen peroxide at the temperature of 1.0-4 ℃ under the reduced pressure condition;

s2, sequentially adding potassium phosphate, sodium carbonate, disodium ethylene diamine tetraacetate and potassium sodium tartrate according to the formula ratio at normal temperature, and storing in a sealed and light-proof manner;

s3, adding the isopropanol, the sodium gluconate, the vulcanization accelerator and the surfactant according to the formula ratio within 30min before use, and fully mixing.

Test example

The etching solutions obtained in examples 1 to 3 were subjected to a comparative test using a control solution without adding a vulcanization accelerator and a surfactant, and the test subjects were aluminum substrates covered with 0.05mm thick copper. The test results are shown in Table 1

TABLE 1 test results

	Example 1	Example 2	Example 3	Comparative example
					Copper coating etching time (min)	35	32	30	41
Corrosion of aluminum base layer	Slightly changed into ash	White colour	Slightly changed into ash	Blackening hair

As can be seen from the above table, the LED aluminum surface etching liquid disclosed by the invention can rapidly etch the copper clad surface to form a circuit without damaging the aluminum base layer

The above are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and all the equivalent changes and modifications made by the claims and the summary of the invention should be covered by the protection scope of the present patent application.

Claims (7)

1. An LED aluminum surface etching liquid medicine with a protection function is characterized by comprising the following raw materials in parts by weight:

100 portions of ammonia water

40-60 parts of potassium phosphate

30-50 parts of hydrogen peroxide

15-25 parts of sodium carbonate

10-20 parts of disodium ethylene diamine tetraacetate

8-12 parts of potassium sodium tartrate

8-12 parts of isopropanol

5-10 parts of sodium gluconate

4-8 parts of vulcanization accelerator

4-8 parts of surfactant

3-6 parts of an oxidant.

2. The LED aluminum surface etching solution with the protection function as claimed in claim 1, which is characterized by comprising the following raw materials in parts by weight;

100 portions of ammonia water

50 portions of potassium phosphate

40 parts of hydrogen peroxide

30 portions of sodium carbonate

Ethylene diamine tetraacetic acid disodium 15 parts

10 portions of potassium sodium tartrate

10 portions of isopropanol

7.5 parts of sodium gluconate

6 parts of vulcanization accelerator

6 portions of surfactant

And 4.5 parts of an oxidizing agent.

3. The protective LED aluminum surface etching solution as claimed in claim 1, wherein the vulcanization accelerator is 2-mercaptobenzothiazole.

4. The protective LED aluminum surface etching solution as claimed in claim 1, wherein the surfactant is selected from sodium stearyl sulfate: alkyl glucoside =1:1 molar ratio.

5. The protective LED aluminum surface etching solution as claimed in claim 1, wherein the oxidizer is selected from perchlorate, permanganate and dichromate.

6. The LED aluminum surface etching solution with the protection function as claimed in claim 1,

the oxidant is potassium permanganate.

7. The method for preparing the LED aluminum surface etching solution with the protection function as claimed in claim 1, comprising the following steps:

s, fully mixing ammonia water and hydrogen peroxide at the temperature of 1.0-4 ℃ under the reduced pressure condition;

s2, sequentially adding potassium phosphate, sodium carbonate, disodium ethylene diamine tetraacetate and potassium sodium tartrate according to the formula ratio at normal temperature, and storing in a sealed and light-proof manner;

s3, adding the isopropanol, the sodium gluconate, the vulcanization accelerator and the surfactant according to the formula ratio within 30min before use, and fully mixing.