High-temperature-resistant chromium-free passivator for tin and tin alloy
A technology of chromium-free passivation agent and tin alloy, applied in the direction of metal material coating process, etc., can solve the problems of high temperature resistance, affecting electrical conductivity and solderability, etc. Good film appearance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0051] Example 1: (1) Add 134.75g of pure water into the container, add 8g of butyl glycol ether, and stir mechanically for 20 minutes;
[0052] (2) Add 142.5g of silicone styrene-acrylic emulsion into the container, heat up to 45°C, stir mechanically for 27min and fully cool to room temperature;
[0053] (3) 22.5g of coupling agent KH-551 after hydrolysis, mechanically stirred for 25min;
[0054] (4) Continue to add 42.5g of water-based wax emulsion, heat up to 40°C, stir mechanically for 25min and cool to room temperature;
[0055] (5) Add 10g of water-based nano antimony-doped tin dioxide and stir for 55min;
[0056] (6) Add 1g of triethanolamine, 2.5g of defoamer, 8g of leveling agent, 1.5g of wetting agent and 134.75g of pure water, and fully mechanically stir for 2 hours until the solution is fully mixed and uniform.
[0057] The above-mentioned passivating agent was prepared as a solution with a concentration of 200mL / L, and the tin-plated electronic workpiece at room...
Embodiment 2
[0058] Example 2: (1) Add 123.5g of pure water into the container, add 9g of ethylene glycol butyl ether, and stir mechanically for 20 minutes;
[0059] (2) Slowly add 150g of silicone styrene-acrylic emulsion, heat up to 40°C, stir mechanically for 30min and fully cool to room temperature;
[0060] (3) 24g of coupling agent KH-560 after hydrolysis, mechanically stirred for 25min;
[0061] (4) Continue to add 44g of water-based wax emulsion, heat up to 50°C, stir mechanically for 30min and cool to room temperature;
[0062] (5) Add 11.5g of water-based nano antimony-doped tin dioxide and stir for 55min;
[0063] (6) Add 1.5g of triethanolamine, 3g of defoamer, 8.5g of leveling agent, 1.5g of wetting agent and 123.5g of pure water, and fully mechanically stir for 2.5 hours until the solution is fully mixed and uniform.
[0064] The above-mentioned passivating agent was prepared as a solution with a concentration of 200mL / L, and the tin-plated electronic workpiece at room temp...
Embodiment 3
[0065] Example 3: (1) Add 129.5 g of pure water into the container, add 9 g of propylene glycol methyl ether acetate, and stir mechanically for 20 minutes;
[0066] (2) Slowly add 145g of silicone styrene-acrylic emulsion, heat up to 40°C, stir mechanically for 25min and fully cool to room temperature;
[0067] (3) Add 25g of hydrolyzed silane coupling agent in turn, and stir mechanically for 28min;
[0068] (4) Continue to add 45g of water-based wax emulsion, heat up to 40°C, stir mechanically for 25min and cool to room temperature;
[0069](5) Add 12.5g of water-based nano antimony-doped tin dioxide and stir for 60 minutes;
[0070] (6) Add 1.5g of triethanolamine, 2.5g of defoamer, 8g of leveling agent, 1.5g of wetting agent and 129.5g of pure water, and fully mechanically stir for 3 hours until the solution is fully mixed and uniform.
[0071] The above-mentioned passivating agent was configured into a solution with a concentration of 100mL / L, and the tin-plated electron...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| time | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More