Super hydrophobic coating is prepared by modifying natural nanometer materials through special process. A super hydrophobic and self-cleaning coating can be formed on the substrate surface by spraying. Applicable products: radome, bridge, wind power blade, building, glass, steel, wood and other products with requirements of hydrophobic and anti-icing.
GENERAL
Super hydrophobic coating is prepared by modifying natural nanometer materials through special process. A super hydrophobic and self-cleaning coating can be formed on the substrate surface by spraying. is prepared by modifying natural nanometer materials through special process. A super hydrophobic and self-cleaning coating can be formed on the substrate surface by spraying. Applicable products: radome, bridge, wind power blade, building, glass, steel, wood and other products with requirements of hydrophobic and anti-icing.
FEATURE
Product features
◆Single component spray coating can achieve wear-resistant, super hydrophobic and anti icing effect in a single application.
◆Friction resistance, the effect can be maintained for 3 years after construction.
◆Super hydrophobic, contact angle (CA)>160 °, rolling angle (SA)<2 °, water droplets are easy to roll off the surface.
◆Super self-cleaning at level 1. The contact surface between ash and coating is small, the adhesion is weak, and ash is not stained; In the heavily polluted environment, the ash shrinks rapidly when it meets water, and can not form a "pollution “dry area of surface discharge(caused by contamination of dielectric surface)”.
◆Prevent ice and snow, and the ice water mixture is difficult to stay on the surface of super hydrophobic coating without freezing; Or extend the initial icing time to reduce the amount of icing. The contact surface between ice and coating is small, the adhesion is weak, and it is easy to deice; After de icing, the super hydrophobicity shall be restored immediately.
Scope of application
◆Power grid: actively resist the damage to transmission line, external insulation (insulator, bushing, porcelain bushing, etc.) and iron tower caused by freezing rain, ice and snow disaster weather, greatly improve the ability of preventing surface discharge.
◆Radome: 5G and radar radome can solve the signal rain attenuation effect caused by rain and snow, greatly improve the self-cleaning and static ability, and actively resist the signal attenuation caused by rain and snow.
PERFORMANCE
Performance
| Testing items | performance metrics |
| Mechanical reciprocating friction | 2.3kpa 1000 mesh sandpaper 40cm / cycle 300 cycle SA = 7 ° |
| tape stripping | 3M tape 2.3kpa pressed for 5S 50 times SA = 6.5 ° |
| Water pressure shock resistance | 50kPa water pressure, the coating is 20cm 2min away from the water outlet, SA = 1 ° |
| Strong acid resistance (1M HCI) | 24h SA=1° |
| Strong alkali resistance (1M NaOH) | 6h SA=75° |
| Neutral salt resistance (1mnaci) | 24h SA=1° |
| Salt spray resistance | 40d SA = 10 ° (5 wt% sodium chloride salt spray, 35 ℃) |
| thermal stability | 150℃ 1h SA=1° |
| Simulated rain | 45cm high 20h SA = 1 ° |
| UV aging | 40 cycles SA = 3 (4h light (60 ℃) 4H rain (50 ℃) in each week) |
| Outdoor stability | 100d SA=4.8 |
| Spraying amount | 375 g/m2 |
| thickness | ~15 um |
| Curing conditions | Room temperature 24h |
| Coating hardness | 1H |
| Coating adhesion | 0 Level (optimal) |
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Precautions
◆Check whether there is precipitation before use and use it after shaking.
◆Spray evenly on the substrate surface with a spray gun. Spraying with low pressure and small flow has better effect. 1L of this product can treat an area of about 7-10m2. It is recommended to use a small-diameter spray gun with good atomization effect.
◆After spraying, let it stand and dry for more than 1 hour, and the super hydrophobic effect will appear after the volatilization of the surface solvent.
Packaging and storage
Packed in plastic barrels with a net weight of 5kg/barrel; Under normal storage and transportation conditions, the storage period is 12 months.
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V. Finishing work after gluing of precast segments
1. Temporary prestress shall be applied after formal positioning of the spliced section and the spliced section;
⒉. Scrape off the glue overflow of the joint and wait for curing before subsequent construction.
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Matters needing attention
The assembly construction of horizontal joints of precast segments shall be carried out simultaneously with the hoisting. The time interval from the commencement of assembly glue construction to the placement of segments shall meet the construction requirements, and the horizontal joints shall meet the design requirements; The splicing adhesive shall be prepared in strict accordance with the process requirements, and the mixing quality shall be confirmed by the quality inspection personnel before use; Before hoisting the next precast segment, the smoothness of the duct of the previous precast segment shall be checked, and the hoisting can be carried out only after it is qualified.
Coating process
Glove application method - a small amount of applying for many times with the palm of your hand to avoid dripping (novice operation is simple and easy to use); Spatula scraping method - suitable for skilled workers. Ordinary workers use this method with low efficiency and easy to drip;
Packaging and storage
Packed according to component AB, component A is 4kg/barrel, and component B is 2kg/barrel; The original sealed products in barrels are stored in a dry and cool environment, and the shelf life of the product is 12 months.
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