一.Product description :LT - 702 is a high-performance dedicated to the printing plate except glue, which can effectively remove leavening softened after the residue and plastic substrate to achieve very good results to corrosion, wall Zhi epoxy honeycomb formation of the slightly rough surface, the copper layer enhanced chemical materials with the bonding.
二.Operating conditions :
The scope of the standard
LT - 702 45-60 g / dl to 50 grams / liter
NaOH 30-40 grams / liter and 35 grams / liter
70-85 ° C temperature 75 ° C
10-15 minutes of time 12 minutes
No need encouragement
Trough material titanium, # 316 S.S
Swinging level swing
Heater material titanium, iron Frontiero
三.Bath preparation : (10 0 L)
1, One of slot clean, pure water by adding 20 liters.
2, joined the LT - 702 (potassium permanganate) 5 kg Stir well.
3, by adding NaOH 3.5 kilograms, uniform mixing.
4, increases to 100 liters of water level, temperature heated up to the requirements.
四.Bath maintenance :
1, each dealing with an area of 100 square meters plate added LT - 702 1-1.5 kilograms.
2, at a temperature range.
3 ,liter Bath handle 50-60 square meters, to be replaced.
五.Note : when to use security, if they splashed on the body, immediately wash with water for five minutes.
Analytical methods :
Bath control
Alkalinity (N) :0.9-1.1
Seven of manganese (potassium permanganate) g / L, 55-59-65
Six of manganese (Mn ions) g / L : <25
六.Analysis Method
(1) Analysis of alkalinity : (N)
1. Bath filtering, from 1 ml to 250 ml sample beaker.
2, plus 100ml deionized water, the installation of PH meter and agitator;
3 with 0.1 mol / L HCL to set standards droplets PH = 10.5, or under a few milliliters V; Calculation : alkali equivalent (N) = 0.1 × V
(2) the total amount of manganese analysis :
1. Take Bath in 300 ml ml conical bottle join 5ml25% of KI and 10ml20% H2SO4;
2. 0.1 mol / L Na2S2O3 titration to pale yellow, plus 2% starch solution of 2-5ml, reuse 0.1 mol / L Na2S2O3 drip to the colorless, recording a few milliliters consumption V;
Calculation : Total amount of manganese (g / L) = 3.16 × V
(3) 7 manganese Analysis :
1,One of Bath filter, cooling, take a sample into 10ml 100ml Flask;
2, the 10% increase Bacl2 solution 5ml, 6% Na2SO4 5ml, DI water with fixed volume, shaking Stillness at least 15 minutes;
3, Flask learned from the upper sdution 10ml conical bottle in 300ml;
4, plus 20ml 20% H2SO4, coupled with solid KI 2g, shaking under the dark reaction after five minutes;
5, with 0.1 mol / L Na2S2O3 drip to pale yellow, plus 2-5ml 2% of the starch indicator;
6, and then 0.1 mol / L Na2S2O3 titration to end at the colorless, or consume several milliliters V;
7, the calculation : KMnO4 (g / L) = 3.16 × V
Mn ions (g / L) = total amount of manganese-KMnO4
(4) rate than plastic analysis methods :
1. Take 3 "x 3" sheet metal (Cu will be bored and lost to);
2. Add to 120 ° C oven drying within 15 minutes;
3. Remove sheet, cooling after weighing accurate to 0.0001; (G1)
4. Examination boards will be put on the production line than plastic, and the tanks were removed after the model;
5. Add to model 120 ° C oven drying within 15 minutes;
6. Remove to cooling precision weighing 0.0001; (G2)
七. Calculation method :
In addition to the thickness of plastic (u ") = (G1 - G2) × 1880
Calculation Method 2 :
In addition to plastic rate (mg/cm2) = (G1 - G2) ÷ board area
Control :0.15 - 0.30 mg/cm2
八.Remarks :
1,try not to repeat the use of plate;
2, in addition to the new line of plastic cylinder must be open for testing on the cases, used to calculate future production line in addition to plastic efficiency;
3, with the exception of plastic efficiency by the impact of the following factors :
A, sheet metal type and suppliers, 1999-11-29 plate and bake cycle;
B, leavening agent variety, temperature, concentration, time;
C, in addition to glue variety, temperature, concentration and time. |
