RU2671988C1 - Application process of drawing copper coating on polyetheretherketone - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to deposition of copper coating on polyether ether and can be used in radio industry, instrument engineering, the aviation industry. Method includes degreasing of polyether ether in a solution of alcohol-nephras mixture, additional chemical degreasing, rinsing in hot running water, rinsing in cold running water, etching in concentrated sulfuric acid, rinsing in cold running water, sensitization, rinsing in cold running water, activating, drying, chemical copper coating, rinsing in cold running water, electroplating copper coating, rinsing in cold running water, drying, protection of copper coating from corrosion.

EFFECT: invention provides a uniform solid copper coating with good adhesion to polyetheretherketone.

1 cl, 3 ex

Description

 The invention relates to a method for applying a chemical copper coating to polyetheretherkenton and can be used in the radio engineering industry, instrument engineering, and the aviation industry.

Polyetheretherketone is a composite polymer material having the following formula:

The technology for producing metal coatings on plastics is known in modern technology, consisting of the following sequence of operations [GOST 9.313 - 89 Metallic and nonmetallic inorganic coatings on plastics (polystyrenes, polyamides, polyformaldehyde, polycarbonates, polyolefins, ABS copolymers). General requirements and technological operations]:

- degreasing;

- flushing in hot running water;

- flushing in cold running water;

- chemical etching in a solution of composition g / l:

- chromic anhydride 350-400 - sulfuric acid 350-400

- flushing in hot running water;

- flushing in cold running water;

- combined activation;

- acceleration in a 10% solution of hydrochloric acid;

- flushing in cold running water;

- applying a chemical copper coating by simply dipping into a solution of chemical copper plating composition g / l:

copper (II) sulfate 5 water 10-15 potassium sodium tartrate 4-water 50-60 sodium hydroxide 10-15 sodium carbonate 4-6 KI-1 inhibitor (0.5% solution) 3-5 sodium N, N-diethyldithiocarbomat 3-5 (0.15% solution) formalin technical 20-30

Or

copper (II) sulfate 5 water 10-20 Trilon B 30-35 sodium hydroxide 10-15 Limeda additive PP-XM-3C  9.5 formalin technical 7.3-7.5

- flushing in cold running water;

- plating copper plating

- flushing in cold running water;

- drying with compressed air.

Closest to the technical nature of the proposed method for applying a copper coating to polyether etherketone is the "Method of producing a metal coating on ferrites, ceramics and ferriteceramics" (RU No. 2212471, published on September 20, 2003, IPC C23C 18/28):

- degreasing;

- flushing in hot running water;

- rinse in cold running water

- sensitization in a solution of composition g / l:

tin dichloride 68-72 potassium dichromate 8-12 phosphoric acid (ρ = 1.75 g / cm ³ ), ml  18-22, sulfuric acid (ρ = 1.84 g / cm ³ ), ml 48-52, hydrochloric acid (ρ = 1.19 g / cm ³ ), ml 48-52, distilled water, ml 198-202

at a temperature of 15-25 ° C for 7-10 minutes.

- flushing in cold running water;

- activation;

- washing in the trap;

- drying;

- metal coating

The disadvantage of this method is the inability to obtain a high-quality uniform coating with good adhesion to the polyether ether ketone.

The task of the invention is to obtain a high-quality copper coating on complex profiles of polyetheretherketone.

The technical result of the "Method for applying a copper coating to polyether ether ketone" is to achieve the possibility of obtaining a uniform continuous copper coating with good adhesion to polyether ether ketone.

The essence of the invention lies in the fact that the method of applying a copper coating on polyetheretherketone is based on degreasing, washing in hot running water, washing in cold running water of sensitization in a solution of g / l composition:

tin dichloride 68-72 potassium dichromate 8-12 phosphoric acid (ρ = 1.75 g / cm ³ ), ml  18-22, sulfuric acid (ρ = 1.84 g / cm ³ ), ml 48-52, hydrochloric acid (ρ = 1.19 g / cm ³ ), ml 48-52, distilled water, ml 198-202

at a temperature of 15-25 ° C for 7-10 minutes, washing in cold running water, activating, drying and applying a metal coating.

New features that ensure the receipt of the claimed technical result is the additional degreasing in a solution of the composition, g / l:

sodium hydroxide 7-10 soda ash 15-20 trisodium phosphate 20-30 syntanol 3-5

at a temperature of (60-70) ° C for 5 minutes

rinsing in hot running water, rinsing in cold running water,

etching in concentrated sulfuric acid (ρ = 1,84 g / cm ³⁾ at 25 ° C for 2 min

rinsing in cold running water,

and drying after activation is carried out in an oven until completely dry at a temperature of 50-80 °, then produce

applying a chemical copper coating from a solution of composition g / l:

copper (II) sulfate 5 water 12-18 Trilon B 27-33 sodium hydroxide 12-18 formalin 37% 20 ml potassium rodanisty 0.008-0.012 pH 12.3-12.8

at a temperature of (20-25) ° C for 20 minutes;

rinsing in cold running water,

applying a galvanic copper coating, for example, from a solution of g / l:

sulfuric acid (ρ = 1.84 g / cm ³ ) 70 copper sulfate 250 D _to , A / dm ² 1,0

rinsing in cold running water,

drying, for example with compressed air

Example 1

The coating was carried out on parts made of polyetheretherketone as follows:

1. Degreasing alcohol-nephras mixture in the ratio (1: 1) for 3 min;

2. Additional chemical degreasing in a solution of the composition, g / l:

sodium hydroxide 7 soda ash fifteen trisodium phosphate twenty syntanol 3

at a temperature of 60 ° C for 5 minutes

3. Rinsing in hot running water;

4. Rinsing in cold running water;

5. Etching in concentrated sulfuric acid (ρ = 1.84 g / cm ³ ) at a solution temperature of 25 ° C for 2 minutes.

6. Rinsing in cold running water;

7. Sensitization in solution composition:

tin dichloride, g 68 potassium dichromate, g 8 phosphoric acid (ρ = 1.75 g / cm ³ ), ml  eighteen sulfuric acid (ρ = 1.84 g / cm ³ ), ml 48 hydrochloric acid (ρ = 1,19 g / cm ^3), ml 48 distilled water, ml 198

at a temperature of 25 ° C for 7 min;

8. Rinsing in cold running water;

9. Activation in a solution of the composition:

palladium chloride, g / l 1,0 hydrochloric acid (ρ = 1.19 g / cm ³ ), ml / l 1,0 pH 1,0

at a temperature of 20 ° C for 10 min;

10. Drying in an oven at a temperature of 50 ° C until completely dry;

11. Application of a chemical copper coating from a solution of the composition, g / l:

copper (II) sulfate 5 water 12 Trilon B 27 sodium hydroxide 12 formalin 37%, ml twenty potassium rodanisty 0.008 pH 12.3

at a temperature of 22 ° C for 20 minutes;

12. Rinsing in cold running water;

13. Plating a copper plating, for example, from a solution of g / l:

sulfuric acid (ρ = 1.84 g / cm ³ ) 70 copper sulfate 250 D _k, A / dm ² 1,0

at a solution temperature of 25 ° C for 45 min

14 Rinsing in cold running water;

15. Drying with compressed air.

16. Protection of the copper coating against corrosion, for example, coating with varnish UR-231 and drying at a temperature of 60 ° C for 4 hours.

The details were coated with a thickness of chemical copper 3 microns, galvanic - 9 microns. They are tested for exposure to elevated temperature + 85 ° C, reduced temperature minus 60 ° C and cyclic exposure to temperatures from minus 60 ° C to plus 85 ° C (3 cycles). Peeling or swelling of the copper coating from the polyetheretherketone was not observed.

Example 2

The coating was carried out on parts made of polyetheretherketone as follows:

1. Degreasing alcohol-nephras mixture in the ratio (1: 1) for 3 min;

2. Additional chemical degreasing in a solution of the composition, g / l:

sodium hydroxide 10 soda ash twenty trisodium phosphate thirty syntanol 5

at a temperature of 70 ° C for 5 minutes

3. Rinsing in hot running water;

4. Rinsing in cold running water;

5. Etching in concentrated sulfuric acid (ρ = 1.84 g / cm ³ ) at a solution temperature of 25 ° C for 2 minutes.

6. Rinsing in cold running water;

7. Sensitization in solution composition:

tin dichloride, g 72 potassium dichromate, g 12 phosphoric acid (ρ = 1.75 g / cm ³ ), ml  22 sulfuric acid (ρ = 1.84 g / cm ³ ), ml 52 hydrochloric acid (ρ = 1.19 g / cm ³ ), ml 52 distilled water, ml 202

at 25 ° C for 10 minutes

8. Rinsing in cold running water;

9. Activation in a solution of the composition:

palladium chloride, g / l 2.0 hydrochloric acid (ρ = 1.19 g / cm ³ ), ml / l 2.0 pH 1,5

at a temperature of 20 ° C for 10 min;

10. Drying in an oven at a temperature of 80 ° C until completely dry;

11. Application of a chemical copper coating, from a solution, composition g / l:

copper (II) sulfate 5 water eighteen Trilon B 32 sodium hydroxide eighteen formalin 37%, ml twenty potassium rodanisty 0.012 pH 12.5

at a temperature of 25 ° C for 20 minutes;

12. Rinsing in cold running water;

13. Application of a galvanic copper coating, for example, from a solution of g / l:

sulfuric acid (ρ = 1.84 g / cm ³ ) 70 copper sulfate 250 D _to , A / dm ² 1,0

at a solution temperature of 25 ° C for 45 min

14 Rinsing in cold running water;

15. Drying with compressed air.

16. Protection of the copper coating against corrosion, for example, coating with varnish UR-231 and drying at a temperature of 60 ° C for 4 hours.

The details were coated with a thickness of chemical copper 3 microns, galvanic - 9 microns. They are tested for exposure to elevated temperature + 85 ° C, reduced temperature minus 60 ° C and cyclic exposure to temperatures from minus 60 ° C to plus 85 ° C (3 cycles). Peeling or swelling of the copper coating from the polyetheretherketone was not observed.

Example 3

The coating was carried out on parts made of polyetheretherketone as follows:

1. Degreasing alcohol-nephras mixture in the ratio (1: 1) for 3 min;

2. Additional chemical degreasing in a solution of the composition, g / l:

sodium hydroxide 9 soda ash 17 trisodium phosphate 25 syntanol four

at 65 ° C for 5 minutes

3. Flushing in hot, running water;

4. Rinsing in cold running water;

5. Etching in concentrated sulfuric acid (ρ = 1.84 g / cm ³ ) at a solution temperature of 25 ° C for 2 minutes.

6. Rinsing in cold running water;

7. Sensitization in solution composition:

tin dichloride, g 70 potassium dichromate, g 10 phosphoric acid (ρ = 1.75 g / cm ³ ), ml  twenty sulfuric acid (ρ = 1.84 g / cm ³ ), ml fifty hydrochloric acid (ρ = 1.19 g / cm ³ ), ml fifty distilled water, ml 200

at a temperature of 20 ° C for 9 min;

8. Rinsing in cold running water;

9. Activation in a solution of the composition:

palladium chloride, g / l 1,5 hydrochloric acid (ρ = 1.19 g / cm ³ ), ml / l 1,5 pH 1.3

at a temperature of 20 ° C for 10 min;

10. Drying in an oven at a temperature of 65 ° C until completely dry;

11. Application of a chemical copper coating, from a solution, composition g / l:

copper (II) sulfate 5 water fifteen Trilon B thirty sodium hydroxide fifteen formalin 37%, ml twenty potassium rodanisty 0.01 pH 12.5

at a temperature of 25 ° C for 20 minutes;

12. Rinsing in cold running water;

13. Application of a galvanic copper coating, for example from a solution of g / l:

sulfuric acid (ρ = 1.84 g / cm ³ ) 70 copper sulfate 250 D _to , A / dm ² 1,0

at a solution temperature of 25 ° C for 45 min

14 Rinsing in cold running water;

15. Drying with compressed air.

16. Protection of the copper coating against corrosion, for example, coating with varnish UR-231 and drying at a temperature of 60 ° C for 4 hours.

The details were coated with a thickness of chemical copper 3 microns, galvanic - 9 microns. They are tested for exposure to elevated temperature + 85 ° C, reduced temperature minus 60 ° C and cyclic exposure to temperatures from minus 60 ° C to plus 85 ° C (3 cycles). Peeling or swelling of the copper coating from the polyetheretherketone was not observed.

Claims (21)

The method of applying a copper coating to polyetheretherketone, including degreasing in a solution of alcohol-nephras mixture in the ratio (1: 1) for 3 minutes and additional chemical degreasing in a solution of the composition, g / l: sodium hydroxide 7-10 soda ash 15-20 trisodium phosphate 20-30 syntanol 3-5 at a temperature of 60-70 ° C for 5 minutes, rinsing in hot running water, rinsing in cold running water, etching in concentrated sulfuric acid ρ = 1.84 g / cm ³ at a temperature of 25 ° C for 2 min, rinsing in cold running water, sensitization in a solution of the composition, g / l: tin dichloride 68-72 potassium dichromate 8-12 phosphoric acid ρ = 1.75 g / cm ³ , ml 18-22 sulfuric acid ρ = 1.84 g / cm ³ , ml 48-52 hydrochloric acid ρ = 1.19 g / cm ³ , ml 48-52 distilled water, ml 198-202 at a temperature of 15-25 ° C for 7-10 minutes, rinsing in cold running water, activation drying in an oven to dry completely at a temperature of 50-80 ° C, applying a chemical copper coating from a solution of the composition, g / l: copper (II) sulfate pentahydrate 12-18 Trilon B 27-32 sodium hydroxide 12-18 formalin 37% 20 ml potassium rodanisty 0.008-0.012 at pH 12.3-12.8 and a temperature of 20-25 ° C for 20 minutes, rinsing in cold running water, plating copper plating, rinsing in cold running water, drying and protection of a copper covering against corrosion.