一、Product Introduction： LT-606 PCB is used metal of the two-hole type liquid chemical Copper products? With stable performance? Convenient? Low-cost advantages.
二、Operation condition：
Copper contents 1.8-2.5 grams / liter
Sodium hydroxide 9-12 grams / liter
Formaldehyde 5-9 grams / liter
temperature 22-35°C
time 13-18 minutes
Filter Continuous filtration (Filter the groove liquor to the clean filter slot every week? Bottom sediments of the copper to copper to remove syrup)
Needed boost
Groove liquor liter work load to deal with 0.55 square feet liquor at the most
Theoretical output per 70 square foot add A and B one liter
三、Preparation Methods :
LT-606A 10%
LT-606B 10%
LT-606M 10%
D.I water 70%
四、Groove liquor maintenance :
1. A day before production? Sample analysis? Keep copper, sodium hydroxide, the formaldehyde content within the scope of : copper ions : 2.2 grams / liter, sodium hydroxide : 12 grams / liter, formaldehyde : 6 grams / liter;
2. Increased 0.1 grams / liter copper ions need to add A : 4 ml / liter? Formaldehyde also increased 0.25 grams / liter? If an increased need formaldehyde grams / liter formaldehyde plus 2.5 ml / liter; Increased 1.2 g / l sodium hydroxide needed to B : 10 ml / liter.
3.Drugs production 30 ㎡ / L replacement.
五、Analyse method：
1．Copper ions: Copper ions : Analysis Methods : Drop 20ml groove liquor to 250ml conical bottle, add 20% sulfuric acid 15 ml, 10% potassium iodide 10ml? 10% KSCN 20ml with 0.1N sodium thiosulfate to pale yellow droplets standards? Plus 5 ml 1% starch solution to the blue titration to disappear but remain the same within 15 seconds? titration ml at V;
Calculation Method : copper ion (g / L) = V × 0.3175
2．Sodium hydroxide and formaldehyde
Analysis Methods : 5ml groove liquor in 250ml beaker, add 50ml deionized water, using better PH meter Add beaker used to drop 0.1N HCl pH = 10.5? Note hydrochloride consumption ml V1? Method give a 10% increase in sodium Stir well to reuse 0.1N PH = hydrochloride drops down consumption of 10.5 ml V2 hydrochloride;
Calculation Method: sodium hydroxide (g / L) = 0.8 × V1
Formaldehyde (g / L) = 0.6 × V2 |
