TinShield Plus-II

Introduction

TinShield Plus-II is a water based tin protective agent post-treatment for tin and tin alloy surfaces. TinShield Plus-II forms a protective nanometer film that improves both anti-tarnishing and wear resistance.

Properties

● To use, simply immerse the workpiece parts into the TinShield Plus-II working solution.
● There are no organic solvents in the TinShield Plus-II concentrated and working solutions.
● The nanometer thin film is non-toxic, making TinShield Plus-II safe to use and environmentally friendly.
● The thin film does not have any negative impact on contact resistance and solderability, while improving anti-tarnishing and wear resistance.
● The thin film can tolerate short periods of heating up to 200℃.
● There are no water stains after treatment with TinShield Plus-II.
● TinShield Plus-II has a long working bath life.

Composition of Solution

TinShield Plus-II is diluted to 10% in DI water. The solution is then ready to be used.

Operating Parameters

Solution Control and Replenishment

Evaporation losses should be compensated for by adding distilled or deionized water. The TinShield Plus-II concentrate must be maintained at 100%. The effective inhibitor content can be determined using the method described in the "Analytical Procedures" section.
Replenishment should be carried out according to the following table:

Analytical Procedures

Equipment required:
● A UV/Vis spectrophotometer capable of 280nm output
● Quartz cuvettes matched set if a dual beam instrument is used
● Two 1000mL volumetric flasks
● 100mL volumetric flask
● 1mL pipette
● Transfer pipettes
● Kimwipes
Analysis:
1. Add 10mL of concentrated TinShield Plus-II into a 100mL volumetric flask and bring to volume with DI water; this is the standard working solution.
2. Pipette 1mL of the TinShield Plus-II standard working solution into a 1000mL volumetric flask and bring to volume with DI water.
3. Set the spectrophotometer to 280nm in absorbance mode. Zero the spectrophotometer with DI water in a quartz cuvette. Once zeroed, remove the blank.
4. Pour out the DI water and add the standard working sample from the final dilution. Pour it out again; then add a new sample form the last dilution. Wipe the sides and place it in the spectrophotometer.
5. Measure the absorbance of the solution (Standard working solution A280nm).
6. Pipette 1mL of the TinShield Plus-II current working solution into a 1000mL volumetric flask and bring to volume with DI water.
7. Add the working solution sample from the final dilution (Step 6). Pour it out again; then add a new sample from the last dilution. Wipe the sides, and place it in the spectrophotometer.
8. Measure the absorbance of the solution (current working solution A280nm).
9. Use the following equation to determine the percent concentration of the current working bath:
% Concentration of TinShield Plus-II =
(Current Working Solution A280nm) / (Standard Working SolutionA280nm) x 100%
Use the table above for replenishment with the TinShield Plus-II concentrate.

Disclaimer

All proposals or suggestions regarding our company's products in this manual are based on experiments and data that our company trusts. Due to the inability to control the actual operations of other practitioners, our company cannot guarantee or be responsible for any adverse consequences.