Formulation and laboratory manufacturing method of high-score latex paint

1, 250g water +PAC 5G800 dissolved.

2. Dispersant 5.4g, 2000 rpm, 30 minutes.

Defoamer 0.5g heavy calcium 42 1g

Kaolin 50g water14g

50 grams of titanium dioxide

3. AMP95 1 g 800 rpm 10-20 minutes.

Film-forming assistant 10g

Propylene glycol 5g

Preservative 1 g

Defoamer 1.5g

4. Emulsion120g800 for 30 minutes.

69 grams of water

Practice: 1, measure 250ml of water and pour it into a beaker to stir. At this time, the rotating speed is 200-600 rpm, weigh 5gPAC and slowly pour it into water, adjust the rotating speed to 800 rpm, and stir until the PAC dissolves (about 15 minutes).

2. Add 5.4 g of dispersant and 0.5 g of defoamer, increase the rotation speed to 2000 rpm, then add 50 g of kaolin, 50 g of titanium dioxide, 42 1 g of heavy calcium carbonate and 14 g of water, and disperse for 30 minutes.

3. After uniform dispersion, add 1gabp95, 10g film-forming additive, 5g propylene glycol,1g preservative and 1.5g defoamer, and reduce the rotation speed to 800 rpm and disperse 10-20min to achieve uniform particle-free.

4. Add 120g emulsion and 69g water, and disperse again for 30 minutes.

There's another one.

Exterior paint

1 water purified water 430

2 cellulose 4 18P 2.3

3 ammonia 1

4 Bentonite 5

5TMTD 0.2

6 wetting agent T-282 1

7 defoamer B-556 1

8 dispersant 5040 9

9 F-974 1 1

Ethylene glycol 10

Preservative LXE 1

12X- 100 1

13 high viscosity agent 3

14 light calcium 200

15 titanium dioxide

16 DCP 400 mesh 350

17 talcum powder 325 mesh 75

18 defoamer B-556 1

19 preservative LXE 2

20 emulsion XG-200 1 260

2 1ASE-60 3

22 purified water 10

23TH82 3.5

24 purified water 1 1

25 total 1506

1. Slowly add cellulose 4 18P while stirring at low speed, add ammonia water after stirring for 10 minute, and continue stirring for 30 minutes.

Until 4 18P is completely dissolved, add Peng Runtu, and continue stirring for15min until it is completely dissolved.

2. Add 5- 13 in turn while stirring at low speed, and stir for 5 minutes until the mixture is uniform.

3. Add 14- 17 while stirring again. When adding each bag of powder, wait until it is completely wet before adding the next bag.

4. After the powder is added, stir at high speed for 30 minutes.

5. The paint slurry passes through a 60-mesh reed and is pumped into the transfer tank.

6. Grind until the fineness is below 70um, and put it into a dilution tank.

7. Pump the emulsion into the paint slurry with a diaphragm pump, add 18- 19, and stir 10 minute until it is even.

8. Evenly mix TH-82 with water and ASE-60 with water, respectively, slowly add them into the paint, and stir for 10 minute.

To be fair.

Requirements: fineness, viscosity and PH value.

≤70um 89 1KU 8-9

Interior wall coating

1 water deionized water 2 15

2 defoamer DFC- 17 1

3 AP-95 0.5

4 OP- 10 1

5 dispersant 5040 5

6 preservative decision 15 1

7 whitening agent 0.5

8 ultramarine qualified 0.05

9 light calcium 200

10 kaolin 50

1 1 TiO2 35

12 titanium dioxide 10

13 talcum powder 325 mesh 70

14 DCP 400 mesh 200

15

The paint paste totals 789.05.

16 water deionized water 154

17 cellulose HEC 2.5

18 glycol qualified 8

19

20 defoamer DFC- 17 1

2 1 preservative decision 15 1

No.22 latex TL-6 15B 120

23 F-974 7

24th-82nd qualified 4

25 deionized water 8

26 residual water deionized water 5

27+0 100. 1.

1, the whole process should be accurately weighed according to the formula and added in strict accordance with the formula order.

2. Weigh water, add defoamer and AP-95, and continue to stir at high speed for 3 minutes.

3. Add 4-8 in turn while stirring at low speed, and stir for 2 minutes until the mixture is uniform.

4. Under high-speed stirring (1200 rpm), add 9- 14 in turn, and finish adding each bag of powder.

Wait until it is completely soaked before adding the next bag.

5. After adding the powder, stir at high speed for 30 minutes, check that there is no abnormality in the paint slurry, and stop stirring.

6. The lacquer slurry passes through 40-mesh radish and is poured into a transfer tank.

7. Grinding with a sand grinder, the grinding temperature is not higher than 55℃, and the fineness is ≤70um.

8. Slowly add the weighed cellulose HEC into the weighed ethylene glycol with stirring until the mixture is uniform.

9. Add water into the stirring tank, slowly add the mixed solution of cellulose HEC and ethylene glycol under stirring, and stir.

10 minutes later, add AP-95 and continue stirring for 30 minutes until uniform.

10, add 20-23 in turn while stirring at low speed, and continue stirring 15 minutes until uniform.

1 1. Pump the ground coating slurry into the dilution tank with low-speed stirring.

12. Slowly add the mixed thickener while stirring.

13. Use the residual water in the later period to jack the car, adjust the viscosity of the paint and test the fineness.

14. After passing the inspection, when the coating temperature is lower than 50℃, the coating will be packed through an 80-mesh screen.

Required fineness, viscosity and PH value

≤70um 95 1KU 7 - 9