Product Description
STWD969 is composed of high-performance anti-corrosion resin as film-forming base, it added bright metallic flakes materials. Its film-forming resin contains a large number of ether bonds, urea bonds, biuret bonds, urethane bonds and hydrogen bonds, which makes the film-forming coating dense and tough, with excellent mechanical and physical properties and anti-corrosion properties. After pretreatment, the metal flakes material can be evenly and orderly arranged during film formation. Due to its outstanding length diameter ratio and strong anti-corrosion ability, it will greatly prolong the penetration and damage of corrosive medium during application, so that the coating can play the role of thick film coating acted under thin conditions. The selected metallic materials are bright flakes, which can effectively reflect light and heat radiation, achieve the effect of cooling and energy saving, make the building environment more comfortable, and the stored materials more stable. The metal flakes in the coating are overlapped from bottom to top, so that the coating has a conductive effect, which can prevent electrostatic accumulation and make the production area safe.
Product application scope
Anti corrosion protection of petroleum, chemical, transportation, construction, electric power and other industrial enterprises, especially storage tanks, chemical equipment, steel structures, embedded parts (including conductive type), roofs and walls of production workshops and storage rooms.
Product features and advantages
*Excellent corrosion resistance, thin coating can also play the role of thick film coating.
With excellent adhesion and low surface treatment requirements, it can be directly applied to the surface of metal workpieces, which not only has the effect of primer, but also has the function of top coating.
The coating is dense and tough, which can resist cyclic stress damage. Excellent mechanical properties, wear resistance, impact resistance and scratch resistance. Excellent anti-corrosion performance, resistant to erosion and damage of a variety of chemical corrosion media, such as salt spray, acid rain, etc. Excellent aging resistance, no crack and no pulverization for outdoor use. The coating can reflect light and heat in the sun to achieve the effect of cooling and energy saving. It has the ability of conducting to prevent static electricity from gathering. One component material, hand applied coating is convenient to use and can be applied in a variety of application modes.
Product physical properties
| Item |
Results |
| Appearance |
Metallic silver |
| Viscosity (cps )@20ºC |
250 |
| Solid content(%) |
≥68 |
| Surface dry time (h) |
4 |
| Pot life (h) |
2 |
| Theoretical Coverage |
0.125kg/m2(thickness 60um) |
Test performance
| Item |
Test standard |
Result |
| Pencil hardness |
GB/T 6739-2006 |
H |
| Bending test (cylindrical shaft) mm |
GB/T 6742-1986 |
2 |
| Surface resistance,Ω |
GB/T22374-2008 |
108 |
| Impact resistance (kg·cm) |
GB/T 1732-1993 |
50 |
| Temperature denaturation resistance (200 ºC, 8 h) |
GB/T1735-2009 |
Normal |
| Adhesion (MPA) steel substrate |
GB/T5210-2006 |
8 |
| Density g/cm3 |
GB/T 6750-2007 |
1.1 |
Corrosion resistance
| Acid resistance 35% H2SO4 or 15%HCl,240h |
No bubbles, no rust, no crack, no peel off |
| Alkali resistance 35%NaOH, 240h |
No bubbles, no rust, no crack, no peel off |
| Salt resistance, 60g/L,240h |
No bubbles, no rust, no crack, no peel off |
| Salt spray resistance,3000h |
No bubbles, no rust, no crack, no peel off |
| Artificial aging resistance,2000h |
No bubbles, no rust, no crack, no peel off |
| Wet resistance,1000h |
No bubbles, no rust, no crack, no peel off |
| Oil resistance, 0# Di esel oil, cru de oil,30d |
No bubbles, no rust, no crack, no peel off |
| (For reference only: pay attention to volatilization, splash corrosion and overflow. If detailed data are required, it is recommended that the user conduct immersion test by himself) |
Application note
The metal structure should be sand-blasted to Sa2.5 of ISO8501-1 or GB8923. If there is no grinding machine, clean up the rust, use wire wheel or sand paper to grind the surface to St2 of ISO8501-1 or GB8923 standard.
This product can be applied on the temperature under -10ºC. When apply on the very low temperature, put the material drums in the air-conditioning room for more than 24h.
STWD recommends to agitate the coating uniformly prior to application, use up the mixed materials within 1 hour. Don't pour the rest liquid to the original bucket.
The viscosity of product is set up in the factory, thinner shall not be random added by the applicators. Call the manufacturer for instructions to add special thinner if the viscosity changed with the application environment and humidity.
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