inorganic Zinc powder contained primer and top coat

Application

SZ-1200 is a two-component heat-resistant primer containing inorganic Zinc Powder (Thick type) It shows best corrosion resistance in our heavy duty specification category.

Regarding heat resistance, it is feasible to stand the heat up to 400℃ as film.

For primer and top coat, designated SZ-250 and SZ-400 will be applied.

Package

SZ-1200 : 24㎏ set (Paint : Powder = 25 : 75)

SZ-250, SZ-400 : 15㎏, 4㎏ (Designated thinner : 16L, 4L)

Product Line up
Heat-
resistant
temp		 Product
name		 Color DFT Dilution ratio
(wt%)		 Std usage
(/㎡)		 Coating interval
(20℃)
㎛/time Brush
Roller		 Spray Brush
Roller		 Spray Min Max
Max
400℃		 SZ-1200 Primer Gray 75㎛ - 0 - 5 - 0.70
㎏		 min
48Hours		 max
6months
Max
250℃		 SZ-250 Primer Gray 20㎛ 5 - 10 10 - 20 0.15
㎏		 0.20
㎏		 min
4Hours		 max
7days
SZ-250 Top coat Silver 10㎛ 0 - 3 0 - 3 0.11
㎏		 0.16
㎏		 ↑ ↑
Special color 20㎛ 5 - 10 10 - 20 0.15
㎏		 0.20
㎏		 ↑ ↑
Max
400℃		 SZ-400 Primer Gray 20㎛ 5 - 10 10 - 20 0.15
㎏		 0.20
㎏		 min
4Hours		 max
7days
SZ-400 Top coat Silver 10㎛ 0 - 3 0 - 3 0.11
㎏		 0.16
㎏		 ↑ ↑
Special color 20㎛ 5 - 10 10 - 20 0.15
㎏		 0.20
㎏		 ↑ ↑
  • Apply SZ-1200 thinner for SZ-1200 and SZ-thinner for SZ-250 & SZ-400.
  • DFT (Dry Film Thickness) : Minimum film thickness to secure property.
  • Above products are made to order.
  • Basically these products are applied for outer only hence it may not be feasible to maintain enough property if applied for inner.

<Heat-resistant inorganic Zinc rich paint : SZ-1200>

SZ-1200 is an inorganic Zinc rich paint with excellent anti-corrosion.

It dries fast and it will be insoluble to water after 60min. setting time.

Application range is wide and it is applicable from min. 5℃ with humidity at 50% - 95%.

<Application method of SZ-1200>

Substrate surface treatment

Anti-corrosion function of Zinc rich primer and paint is achieved by direct contact to steel substrate ; therefore, perfect substrate surface treatment is necessary.

Also SZ-1200 contains a large amount of Zinc powder and small amount of resin; therefore, rough steel surface is necessary.

In order to obtain rough surface, blast shot is required.

Paint adjustment

Before adding Zinc powder, agitate main portion to be homogenious then add Zinc powder gradually under agitation.

After homogenized, filtrate mixture by 60 mesh metal filter.

As Zinc powder is easy to settle, continuous agitation during coating is necessary.

Mist coat

After inorganic Zinc primer is coated, apply the mist coat of paint being used at next process, SZ primer, with dilution condition of 30 - 40% to obtain good affinity of inorganic Zinc primer and SZ primer.

Protection and storage of coated steel

Coated film is cured fast if it is left outside, but it generates white rust due to water left on dried film for long period.

In order to prevent white rust, measures for curing and avoiding water should be implemented.

If paint is applied on white rust, poor adhesion occurs; therefore, remove white rust by sanding with sand paper then apply coating.

Wet paint property of SZ-1200
Pot life
after
mixing		 5℃ 12hours
10℃ 10hours
20℃ 8hours
30℃ 5hours
Drying
time
(Feasible
time to
walk)		 5℃ 24hours
10℃ 20hours
20℃ 18hours
30℃ 12hours
Film
thickness
(Dry)		 - 75㎛
Std usage - 0.7㎏/㎡
Dilution
ratio		 5℃ 3 - 10%
10℃ 0 - 7%
20℃ 0 - 5%
30℃ 0 - 5%
Caution on the application of Heavy duty type paint
  1. Substrate surface treatment : Remove oil from substrate surface by thinner then implement blast shot, ISO Sa 2.5 min.
    In case that blast shot is not feasible, apply sanding machine and remove foreign matters such as black scale, old paint film, and rust then implement surface treatment better than ISO St.3.0 .
    After treatment of substrate, remove dirts by air blow then implement undercoat application.
    For 400℃ type , implement a blast shot better than ISO Sa 2.5 .
  2. Refrain from applying at below 5℃ or humidity higher than 85%.
  3. SZ-1200 is applied by airless Spray after blast shot. (Better than ISO Sa 2.5)
  4. In case that spray interval is out of specification, too long, apply sanding to obtain rough surface then implement application.
  5. Paint usage is fluctuated by shape of coating object, surface condition, and coating condition.
  6. When can is opened, confirm the condition of settling in the bottom then agitate well to be homogenious.
  7. Store in a dangerous goods warehouse with tightly sealed at good ventilation and prohibition of flame.